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Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, May 10–12, 2016
Paper Number: ISRM-ISRS-2016-040
... characterisation of the EDZ. The P-wave tomography covered a three-dimensional volume of the EDZ field sampled by multiple two-dimensional planes defined by drillholes, providing 30 2-D sections along the North-South, East-West, North West-South East and North East-South West directions. A total of 24 sensors were...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-034
... for fault slip data obtained from fault plane solution for aftershocks of Bam Earthquake in Iran, in 2003. Several stress state possibilities are found with close values of object function. To overcome this problem, a method is introduced in which the stress states with less than 5 percent difference...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-026
... Chinese Journal plane stress measurement in-situ stress Upstream Oil & Gas borehole hollow cylinder Magnitude hydraulic fracture principal stress Rock Stress and Earthquakes Xie (ed.) © 2010 Taylor & Francis Group, London, ISBN 978-0-415-60165-8 Strength and failure of rock due...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-027
... for uniaxial compressive tests accompanied by an AE monitoring system. The failure modes of these specimens were clearly affected by structural plane, and can be divided into three categories: tensile-split along the weaker bedding plane (TD), tensile fracture across the weaker bedding plane (TM) and sliding...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-120
... ABSTRACT: In this work, we analyze the characteristics of three-dimensional Mohr diagram. Based on this analysis, the conditions of reactivation of pre-existing planes on a Mohr diagram due to changes in applied stress state are investigated. Our results indicate that: On a three...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-101
... and inclination. The results show that the effect of deformation and stability of rock mass varies with the dimensional orientation of structural planes. When the inclination of rock stratum remains invariable, with the increase of dip angle of rock stratum, the displacements around tunnel are of a decreasing...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-043
... the compressive principal stress in the borehole tangential plane is maximum. We show that, to a first-order approximation, the breakout directions are also related to the orientation of σ h and R as for normally pressured to slightly overpressured conditions, the breakout orientation is not very sensitive...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-117
... direction exceptional density zone and the fault plane dipping to east-west direction, plateau matter creepaging to the east along the slip layer led to nearly east-west direction stress and brought the Wenchuan MS 8.0 earthquake, and whose energy regulation behaved as the active method of Longmenshan Fault...
Proceedings Papers

Paper presented at the ISRM International Symposium on In-Situ Rock Stress, August 25–27, 2010
Paper Number: ISRM-ISRS-2010-048
... STRESS TENSOR FIELD Natural stress tensor field can be assessed by three different scales: regional scale, local scale and punctual scale. Reservoir Characterization nstf assessment assessment porce iii hydroelectric project Magnitude reservoir geomechanics stress magnitude plane...

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