Empty-hole effect on fracture propagation under blasting load
Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Lv, Yanxin [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© Saudi Society for Geosciences 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Arabian journal of geosciences - Berlin : Springer, 2008, 15(2022), 8 vom: Apr. |
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| Übergeordnetes Werk: |
volume:15 ; year:2022 ; number:8 ; month:04 |
| Links: |
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| DOI / URN: |
10.1007/s12517-022-09967-7 |
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| Katalog-ID: |
SPR046736557 |
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| 100 | 1 | |a Lv, Yanxin |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Empty-hole effect on fracture propagation under blasting load |
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| 520 | |a Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. | ||
| 650 | 4 | |a Empty hole effect |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Directional fracture |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Rock roof |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Blasting theory |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Shock wave |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Yuan, Chao |4 aut | |
| 700 | 1 | |a Fu, Yanzhao |4 aut | |
| 700 | 1 | |a Zhu, Xiaohua |4 aut | |
| 700 | 1 | |a Gan, Quan |4 aut | |
| 700 | 1 | |a Li, Haibo |4 aut | |
| 700 | 1 | |a Chen, Qiuyu |4 aut | |
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10.1007/s12517-022-09967-7 doi (DE-627)SPR046736557 (SPR)s12517-022-09967-7-e DE-627 ger DE-627 rakwb eng Lv, Yanxin verfasserin aut Empty-hole effect on fracture propagation under blasting load 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Saudi Society for Geosciences 2022 Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. Empty hole effect (dpeaa)DE-He213 Directional fracture (dpeaa)DE-He213 Rock roof (dpeaa)DE-He213 Blasting theory (dpeaa)DE-He213 Shock wave (dpeaa)DE-He213 Yuan, Chao aut Fu, Yanzhao aut Zhu, Xiaohua aut Gan, Quan aut Li, Haibo aut Chen, Qiuyu aut Enthalten in Arabian journal of geosciences Berlin : Springer, 2008 15(2022), 8 vom: Apr. (DE-627)572421877 (DE-600)2438771-X 1866-7538 nnns volume:15 year:2022 number:8 month:04 https://dx.doi.org/10.1007/s12517-022-09967-7 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_65 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_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 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 15 2022 8 04 |
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10.1007/s12517-022-09967-7 doi (DE-627)SPR046736557 (SPR)s12517-022-09967-7-e DE-627 ger DE-627 rakwb eng Lv, Yanxin verfasserin aut Empty-hole effect on fracture propagation under blasting load 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Saudi Society for Geosciences 2022 Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. Empty hole effect (dpeaa)DE-He213 Directional fracture (dpeaa)DE-He213 Rock roof (dpeaa)DE-He213 Blasting theory (dpeaa)DE-He213 Shock wave (dpeaa)DE-He213 Yuan, Chao aut Fu, Yanzhao aut Zhu, Xiaohua aut Gan, Quan aut Li, Haibo aut Chen, Qiuyu aut Enthalten in Arabian journal of geosciences Berlin : Springer, 2008 15(2022), 8 vom: Apr. (DE-627)572421877 (DE-600)2438771-X 1866-7538 nnns volume:15 year:2022 number:8 month:04 https://dx.doi.org/10.1007/s12517-022-09967-7 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_65 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_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 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 15 2022 8 04 |
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10.1007/s12517-022-09967-7 doi (DE-627)SPR046736557 (SPR)s12517-022-09967-7-e DE-627 ger DE-627 rakwb eng Lv, Yanxin verfasserin aut Empty-hole effect on fracture propagation under blasting load 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Saudi Society for Geosciences 2022 Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. Empty hole effect (dpeaa)DE-He213 Directional fracture (dpeaa)DE-He213 Rock roof (dpeaa)DE-He213 Blasting theory (dpeaa)DE-He213 Shock wave (dpeaa)DE-He213 Yuan, Chao aut Fu, Yanzhao aut Zhu, Xiaohua aut Gan, Quan aut Li, Haibo aut Chen, Qiuyu aut Enthalten in Arabian journal of geosciences Berlin : Springer, 2008 15(2022), 8 vom: Apr. (DE-627)572421877 (DE-600)2438771-X 1866-7538 nnns volume:15 year:2022 number:8 month:04 https://dx.doi.org/10.1007/s12517-022-09967-7 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_65 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_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 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 15 2022 8 04 |
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10.1007/s12517-022-09967-7 doi (DE-627)SPR046736557 (SPR)s12517-022-09967-7-e DE-627 ger DE-627 rakwb eng Lv, Yanxin verfasserin aut Empty-hole effect on fracture propagation under blasting load 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Saudi Society for Geosciences 2022 Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. Empty hole effect (dpeaa)DE-He213 Directional fracture (dpeaa)DE-He213 Rock roof (dpeaa)DE-He213 Blasting theory (dpeaa)DE-He213 Shock wave (dpeaa)DE-He213 Yuan, Chao aut Fu, Yanzhao aut Zhu, Xiaohua aut Gan, Quan aut Li, Haibo aut Chen, Qiuyu aut Enthalten in Arabian journal of geosciences Berlin : Springer, 2008 15(2022), 8 vom: Apr. (DE-627)572421877 (DE-600)2438771-X 1866-7538 nnns volume:15 year:2022 number:8 month:04 https://dx.doi.org/10.1007/s12517-022-09967-7 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_65 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_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 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 15 2022 8 04 |
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10.1007/s12517-022-09967-7 doi (DE-627)SPR046736557 (SPR)s12517-022-09967-7-e DE-627 ger DE-627 rakwb eng Lv, Yanxin verfasserin aut Empty-hole effect on fracture propagation under blasting load 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Saudi Society for Geosciences 2022 Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. Empty hole effect (dpeaa)DE-He213 Directional fracture (dpeaa)DE-He213 Rock roof (dpeaa)DE-He213 Blasting theory (dpeaa)DE-He213 Shock wave (dpeaa)DE-He213 Yuan, Chao aut Fu, Yanzhao aut Zhu, Xiaohua aut Gan, Quan aut Li, Haibo aut Chen, Qiuyu aut Enthalten in Arabian journal of geosciences Berlin : Springer, 2008 15(2022), 8 vom: Apr. (DE-627)572421877 (DE-600)2438771-X 1866-7538 nnns volume:15 year:2022 number:8 month:04 https://dx.doi.org/10.1007/s12517-022-09967-7 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_65 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_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_381 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 15 2022 8 04 |
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Lv, Yanxin @@aut@@ Yuan, Chao @@aut@@ Fu, Yanzhao @@aut@@ Zhu, Xiaohua @@aut@@ Gan, Quan @@aut@@ Li, Haibo @@aut@@ Chen, Qiuyu @@aut@@ |
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When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. 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| author |
Lv, Yanxin |
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Lv, Yanxin misc Empty hole effect misc Directional fracture misc Rock roof misc Blasting theory misc Shock wave Empty-hole effect on fracture propagation under blasting load |
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| topic_title |
Empty-hole effect on fracture propagation under blasting load Empty hole effect (dpeaa)DE-He213 Directional fracture (dpeaa)DE-He213 Rock roof (dpeaa)DE-He213 Blasting theory (dpeaa)DE-He213 Shock wave (dpeaa)DE-He213 |
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misc Empty hole effect misc Directional fracture misc Rock roof misc Blasting theory misc Shock wave |
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Empty-hole effect on fracture propagation under blasting load |
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Empty-hole effect on fracture propagation under blasting load |
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Lv, Yanxin Yuan, Chao Fu, Yanzhao Zhu, Xiaohua Gan, Quan Li, Haibo Chen, Qiuyu |
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Lv, Yanxin |
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10.1007/s12517-022-09967-7 |
| title_sort |
empty-hole effect on fracture propagation under blasting load |
| title_auth |
Empty-hole effect on fracture propagation under blasting load |
| abstract |
Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. © Saudi Society for Geosciences 2022 |
| abstractGer |
Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. © Saudi Society for Geosciences 2022 |
| abstract_unstemmed |
Abstract In this study, we present a simple and effective method to improve the fragmentation efficiency of rock-like materials. An empty hole is arranged reasonably beside the charge hole in the specimen. Through the effect of empty hole, the explosion load produces stress concentration on the line between the charge hole and the empty hole, so as to achieve the effect of directional cracking. In this paper, the influence of the crack direction and the distance between the charging hole and the empty hole on the crack growth is analyzed through experiment and numerical simulation, and the strain around the empty hole is measured under different charging hole layout, and the explosion effect is compared. The results show that when the empty hole is located at fracture zone, the empty hole is able to control the direction of crack growth effectively. It plays a crucial role in directional fracture, and the strain is the maximum in this situation. When the empty hole is located at crush zone and elastic zone, it was ineffective in directional fracture, because of the stress field surrounding the empty hole and the pressure field formed by detonation gas at crack tip fail to reach the requirement of the crack growth. By analyzing the air pressure measurement during blasting, it can be concluded that the optimum distance of the empty hole is 60 mm, achieving the dramatic effect of air pressure fluctuation. In application of coal mine roof weaken in Huaibei Mining Group, the empty holes play an important role in advanced pre-splitting blasting. © Saudi Society for Geosciences 2022 |
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Empty-hole effect on fracture propagation under blasting load |
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Yuan, Chao Fu, Yanzhao Zhu, Xiaohua Gan, Quan Li, Haibo Chen, Qiuyu |
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Yuan, Chao Fu, Yanzhao Zhu, Xiaohua Gan, Quan Li, Haibo Chen, Qiuyu |
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2024-07-04T00:09:17.182Z |
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| score |
7.399805 |