An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading

Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloa...
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Autor*in:	Fan, Wenchen [verfasserIn] Tang, Guodong Han, Dongya Yang, Hui

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Stepped excavation unloading Polylactic Crack propagation Rock-like material Inhomogeneous deformation

Anmerkung:	© Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Übergeordnetes Werk:	Enthalten in: Bulletin of engineering geology and the environment - Berlin : Springer, 1970, 82(2023), 12 vom: 24. Nov.
Übergeordnetes Werk:	volume:82 ; year:2023 ; number:12 ; day:24 ; month:11

Links:	Volltext

DOI / URN:	10.1007/s10064-023-03491-y

Katalog-ID:	SPR053834488

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520			\|a Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects.
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700	1		\|a Yang, Hui \|4 aut
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allfields	10.1007/s10064-023-03491-y doi (DE-627)SPR053834488 (SPR)s10064-023-03491-y-e DE-627 ger DE-627 rakwb eng Fan, Wenchen verfasserin (orcid)0000-0003-0150-8343 aut An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. Stepped excavation unloading (dpeaa)DE-He213 Polylactic (dpeaa)DE-He213 Crack propagation (dpeaa)DE-He213 Rock-like material (dpeaa)DE-He213 Inhomogeneous deformation (dpeaa)DE-He213 Tang, Guodong aut Han, Dongya aut Yang, Hui aut Enthalten in Bulletin of engineering geology and the environment Berlin : Springer, 1970 82(2023), 12 vom: 24. Nov. (DE-627)271597011 (DE-600)1480689-7 1435-9537 nnns volume:82 year:2023 number:12 day:24 month:11 https://dx.doi.org/10.1007/s10064-023-03491-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2023 12 24 11
spelling	10.1007/s10064-023-03491-y doi (DE-627)SPR053834488 (SPR)s10064-023-03491-y-e DE-627 ger DE-627 rakwb eng Fan, Wenchen verfasserin (orcid)0000-0003-0150-8343 aut An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. Stepped excavation unloading (dpeaa)DE-He213 Polylactic (dpeaa)DE-He213 Crack propagation (dpeaa)DE-He213 Rock-like material (dpeaa)DE-He213 Inhomogeneous deformation (dpeaa)DE-He213 Tang, Guodong aut Han, Dongya aut Yang, Hui aut Enthalten in Bulletin of engineering geology and the environment Berlin : Springer, 1970 82(2023), 12 vom: 24. Nov. (DE-627)271597011 (DE-600)1480689-7 1435-9537 nnns volume:82 year:2023 number:12 day:24 month:11 https://dx.doi.org/10.1007/s10064-023-03491-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2023 12 24 11
allfields_unstemmed	10.1007/s10064-023-03491-y doi (DE-627)SPR053834488 (SPR)s10064-023-03491-y-e DE-627 ger DE-627 rakwb eng Fan, Wenchen verfasserin (orcid)0000-0003-0150-8343 aut An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. Stepped excavation unloading (dpeaa)DE-He213 Polylactic (dpeaa)DE-He213 Crack propagation (dpeaa)DE-He213 Rock-like material (dpeaa)DE-He213 Inhomogeneous deformation (dpeaa)DE-He213 Tang, Guodong aut Han, Dongya aut Yang, Hui aut Enthalten in Bulletin of engineering geology and the environment Berlin : Springer, 1970 82(2023), 12 vom: 24. Nov. (DE-627)271597011 (DE-600)1480689-7 1435-9537 nnns volume:82 year:2023 number:12 day:24 month:11 https://dx.doi.org/10.1007/s10064-023-03491-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2023 12 24 11
allfieldsGer	10.1007/s10064-023-03491-y doi (DE-627)SPR053834488 (SPR)s10064-023-03491-y-e DE-627 ger DE-627 rakwb eng Fan, Wenchen verfasserin (orcid)0000-0003-0150-8343 aut An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. Stepped excavation unloading (dpeaa)DE-He213 Polylactic (dpeaa)DE-He213 Crack propagation (dpeaa)DE-He213 Rock-like material (dpeaa)DE-He213 Inhomogeneous deformation (dpeaa)DE-He213 Tang, Guodong aut Han, Dongya aut Yang, Hui aut Enthalten in Bulletin of engineering geology and the environment Berlin : Springer, 1970 82(2023), 12 vom: 24. Nov. (DE-627)271597011 (DE-600)1480689-7 1435-9537 nnns volume:82 year:2023 number:12 day:24 month:11 https://dx.doi.org/10.1007/s10064-023-03491-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2023 12 24 11
allfieldsSound	10.1007/s10064-023-03491-y doi (DE-627)SPR053834488 (SPR)s10064-023-03491-y-e DE-627 ger DE-627 rakwb eng Fan, Wenchen verfasserin (orcid)0000-0003-0150-8343 aut An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. Stepped excavation unloading (dpeaa)DE-He213 Polylactic (dpeaa)DE-He213 Crack propagation (dpeaa)DE-He213 Rock-like material (dpeaa)DE-He213 Inhomogeneous deformation (dpeaa)DE-He213 Tang, Guodong aut Han, Dongya aut Yang, Hui aut Enthalten in Bulletin of engineering geology and the environment Berlin : Springer, 1970 82(2023), 12 vom: 24. Nov. (DE-627)271597011 (DE-600)1480689-7 1435-9537 nnns volume:82 year:2023 number:12 day:24 month:11 https://dx.doi.org/10.1007/s10064-023-03491-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 AR 82 2023 12 24 11
language	English
source	Enthalten in Bulletin of engineering geology and the environment 82(2023), 12 vom: 24. Nov. volume:82 year:2023 number:12 day:24 month:11
sourceStr	Enthalten in Bulletin of engineering geology and the environment 82(2023), 12 vom: 24. Nov. volume:82 year:2023 number:12 day:24 month:11
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Stepped excavation unloading Polylactic Crack propagation Rock-like material Inhomogeneous deformation
isfreeaccess_bool	false
container_title	Bulletin of engineering geology and the environment
authorswithroles_txt_mv	Fan, Wenchen @@aut@@ Tang, Guodong @@aut@@ Han, Dongya @@aut@@ Yang, Hui @@aut@@
publishDateDaySort_date	2023-11-24T00:00:00Z
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language_de	englisch
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author	Fan, Wenchen
spellingShingle	Fan, Wenchen misc Stepped excavation unloading misc Polylactic misc Crack propagation misc Rock-like material misc Inhomogeneous deformation An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading
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topic_title	An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading Stepped excavation unloading (dpeaa)DE-He213 Polylactic (dpeaa)DE-He213 Crack propagation (dpeaa)DE-He213 Rock-like material (dpeaa)DE-He213 Inhomogeneous deformation (dpeaa)DE-He213
topic	misc Stepped excavation unloading misc Polylactic misc Crack propagation misc Rock-like material misc Inhomogeneous deformation
topic_unstemmed	misc Stepped excavation unloading misc Polylactic misc Crack propagation misc Rock-like material misc Inhomogeneous deformation
topic_browse	misc Stepped excavation unloading misc Polylactic misc Crack propagation misc Rock-like material misc Inhomogeneous deformation
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title	An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading
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title_full	An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading
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author_browse	Fan, Wenchen Tang, Guodong Han, Dongya Yang, Hui
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title_sort	innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading
title_auth	An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading
abstract	Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
abstractGer	Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
abstract_unstemmed	Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects. © Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
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title_short	An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading
url	https://dx.doi.org/10.1007/s10064-023-03491-y
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author2	Tang, Guodong Han, Dongya Yang, Hui
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up_date	2024-07-03T22:21:13.080Z
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fullrecord_marcxml	<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">SPR053834488</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20231207064632.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">231124s2023 xx \|\|\|\|\|o 00\| \|\|eng c</controlfield><datafield tag="024" ind1="7" ind2=" "><subfield code="a">10.1007/s10064-023-03491-y</subfield><subfield code="2">doi</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)SPR053834488</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(SPR)s10064-023-03491-y-e</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Fan, Wenchen</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(orcid)0000-0003-0150-8343</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="3"><subfield code="a">An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2023</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">© Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract Fractures are commonly found throughout rock masses. The propagation and coalescence of these fractures can significantly weaken the surrounding rock strength during underground excavations. In order to investigate the cracking behavior of pre-existing fractures affected by excavation unloading, this study proposed an innovative laboratory excavation test to simulate excavation unloading in deep rock masses. Corresponding numerical stepped excavation tests were also conducted using RFPA (Realistic Failure Process Analysis). The excavation area in specimen was pre-filled with polylactic acid (PLA), and stepped excavation under constant normal stress was performed using an electric cutter. The results reveal that the stress-strain curves of the specimens during stepped excavation can be categorized into four stages based on deformation behavior and the crack process. There are four different patterns of crack coalescence, ultimately leading to specimen failure. Numerical results indicate that the inhomogeneous deformation caused by stepped excavation is responsible for crack initiation, propagation, and eventual specimen failure. The rock bridges between fissures and excavation areas break in three modes: shear sliding, segregation due to tensile cracks, and the formation of ubiquitous fractures. Furthermore, the inclination of the fissure and the initial normal load applied to the specimens have a significant impact on the crack coalescence modes and initiation. These findings can contribute to a better understanding of crack evolution behaviors, including initiation, propagation, coalescence, and transfixion, during excavation unloading in underground engineering projects.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Stepped excavation unloading</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Polylactic</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Crack propagation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Rock-like material</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Inhomogeneous deformation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Tang, Guodong</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Han, Dongya</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Yang, Hui</subfield><subfield code="4">aut</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">Enthalten in</subfield><subfield code="t">Bulletin of engineering geology and the environment</subfield><subfield code="d">Berlin : Springer, 1970</subfield><subfield code="g">82(2023), 12 vom: 24. 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An innovative test to study cracking behavior of fractured rock-like material under stepped excavation unloading

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