...Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis Group, London, ISBN 978-1-138-00057-5 Research on stress state in slopes subjected to tectonic stress during valley incision by geomechanical modelling Shengrui Su, Peng Li, Qi Wang...

... Characterization orientation fracture initiation rock medium in-situ stress reservoir geomechanics horizontal fracture stress state stress concentration horizontal principal stress hydraulic fracturing borehole hard roof stress distribution fracture Upstream Oil & Gas transverse borehole...

... shear strength Upstream Oil & Gas Rock mechanics reservoir geomechanics specimen Mean stress bedding plane Reservoir Characterization axial stress sandstone MPa polyaxial load frame stress state intermediate principal stress Poisson principal stress tensile strength ISRM-Sponsored...

... displacement load platen Rock stress estimation Upstream Oil & Gas stress state Probe stress measurement Reservoir Characterization stress component coefficient determination steel pipe reservoir geomechanics interface fracture friction shell borehole jack borehole wall...

... failure. b) Graphical expression of the failure criteria for extensional and shear failure and diagrams showing the relationship between the two types of failure and the stress fields generating them. The stress states in a sequence of layers at a depth z in the crust are shown as a series of Mohr circles...