Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State
Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between ni...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Liu, Jie [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag Wien 2015 |
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| Übergeordnetes Werk: |
Enthalten in: Rock mechanics and rock engineering - Springer Vienna, 1983, 49(2015), 4 vom: 10. Sept., Seite 1479-1495 |
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| Übergeordnetes Werk: |
volume:49 ; year:2015 ; number:4 ; day:10 ; month:09 ; pages:1479-1495 |
| Links: |
|---|
| DOI / URN: |
10.1007/s00603-015-0843-6 |
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OLC2053465735 |
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| 520 | |a Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. | ||
| 650 | 4 | |a Confining stress | |
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| 650 | 4 | |a Biaxial state | |
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| 650 | 4 | |a Indentation efficiency | |
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| 700 | 1 | |a Han, Dongya |4 aut | |
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10.1007/s00603-015-0843-6 doi (DE-627)OLC2053465735 (DE-He213)s00603-015-0843-6-p DE-627 ger DE-627 rakwb eng 690 VZ 16,13 19,1 ssgn Liu, Jie verfasserin aut Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Wien 2015 Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. Confining stress TBM cutter Biaxial state Breaking groove morphology Indentation efficiency Cao, Ping aut Han, Dongya aut Enthalten in Rock mechanics and rock engineering Springer Vienna, 1983 49(2015), 4 vom: 10. Sept., Seite 1479-1495 (DE-627)129620696 (DE-600)246075-0 (DE-576)015126897 0723-2632 nnns volume:49 year:2015 number:4 day:10 month:09 pages:1479-1495 https://doi.org/10.1007/s00603-015-0843-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2027 GBV_ILN_4046 AR 49 2015 4 10 09 1479-1495 |
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10.1007/s00603-015-0843-6 doi (DE-627)OLC2053465735 (DE-He213)s00603-015-0843-6-p DE-627 ger DE-627 rakwb eng 690 VZ 16,13 19,1 ssgn Liu, Jie verfasserin aut Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Wien 2015 Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. Confining stress TBM cutter Biaxial state Breaking groove morphology Indentation efficiency Cao, Ping aut Han, Dongya aut Enthalten in Rock mechanics and rock engineering Springer Vienna, 1983 49(2015), 4 vom: 10. Sept., Seite 1479-1495 (DE-627)129620696 (DE-600)246075-0 (DE-576)015126897 0723-2632 nnns volume:49 year:2015 number:4 day:10 month:09 pages:1479-1495 https://doi.org/10.1007/s00603-015-0843-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2027 GBV_ILN_4046 AR 49 2015 4 10 09 1479-1495 |
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10.1007/s00603-015-0843-6 doi (DE-627)OLC2053465735 (DE-He213)s00603-015-0843-6-p DE-627 ger DE-627 rakwb eng 690 VZ 16,13 19,1 ssgn Liu, Jie verfasserin aut Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Wien 2015 Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. Confining stress TBM cutter Biaxial state Breaking groove morphology Indentation efficiency Cao, Ping aut Han, Dongya aut Enthalten in Rock mechanics and rock engineering Springer Vienna, 1983 49(2015), 4 vom: 10. Sept., Seite 1479-1495 (DE-627)129620696 (DE-600)246075-0 (DE-576)015126897 0723-2632 nnns volume:49 year:2015 number:4 day:10 month:09 pages:1479-1495 https://doi.org/10.1007/s00603-015-0843-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2027 GBV_ILN_4046 AR 49 2015 4 10 09 1479-1495 |
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10.1007/s00603-015-0843-6 doi (DE-627)OLC2053465735 (DE-He213)s00603-015-0843-6-p DE-627 ger DE-627 rakwb eng 690 VZ 16,13 19,1 ssgn Liu, Jie verfasserin aut Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag Wien 2015 Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. Confining stress TBM cutter Biaxial state Breaking groove morphology Indentation efficiency Cao, Ping aut Han, Dongya aut Enthalten in Rock mechanics and rock engineering Springer Vienna, 1983 49(2015), 4 vom: 10. Sept., Seite 1479-1495 (DE-627)129620696 (DE-600)246075-0 (DE-576)015126897 0723-2632 nnns volume:49 year:2015 number:4 day:10 month:09 pages:1479-1495 https://doi.org/10.1007/s00603-015-0843-6 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-UMW SSG-OLC-ARC SSG-OLC-TEC SSG-OLC-GEO SSG-OPC-GGO SSG-OPC-GEO GBV_ILN_30 GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2027 GBV_ILN_4046 AR 49 2015 4 10 09 1479-1495 |
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Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State |
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Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State |
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Liu, Jie |
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Liu, Jie Cao, Ping Han, Dongya |
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sequential indentation tests to investigate the influence of confining stress on rock breakage by tunnel boring machine cutter in a biaxial state |
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Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State |
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Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. © Springer-Verlag Wien 2015 |
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Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. © Springer-Verlag Wien 2015 |
| abstract_unstemmed |
Abstract The influence of confining stress on rock breakage by a tunnel boring machine cutter was investigated by conducting sequential indentation tests in a biaxial state. Combined with morphology measurements of breaking grooves and an analysis of surface and internal crack propagation between nicks, the effects of maximum confining stress and minimum stress on indentation efficiency, crack propagation and chip formation were investigated. Indentation tests and morphology measurements show that increasing a maximum confining stress will result in increased consumed energy in indentations, enlarged groove volumes and promoted indentation efficiency when the corresponding minimum confining stress is fixed. The energy consumed in indentations will increase with increase in minimum confining stress, however, because of the decreased groove volumes as the minimum confining stress increases, the efficiency will decrease. Observations of surface crack propagation show that more intensive fractures will be induced as the maximum confining stress increases, whereas the opposite occurs for an increase of minimum confining stress. An observation of the middle section, cracks and chips shows that as the maximum confining stress increases, chips tend to form in deeper parts when the minimum confining stress is fixed, whereas they tend to formed in shallower parts as the minimum confining stress increases when the maximum confining stress is fixed. © Springer-Verlag Wien 2015 |
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Sequential Indentation Tests to Investigate the Influence of Confining Stress on Rock Breakage by Tunnel Boring Machine Cutter in a Biaxial State |
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