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Keywords: normal stress
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-052
... normal stress for ith plane in unsaturated soil, s nc may be for net normal stress in the case of saturated virgin state starting at a partially saturated condition through a wetting path, s nio is normal stress for saturated condition, r, b , and s are parameter defining maximum soil stiffness due...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-043
...), Eckersley (1990), Hungr (1995) and others. Hutchinson (1986) stated flow slide is a slope failure involving the collapse of metastable structure in a loose, cohesionless mass. Reservoir Characterization mechanism torrent deposit shear resistance granular soil normal stress debris flow apparent...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-049
... relative difference seabed thickness soil displacement wave-induced seabed response inertia force soil response saturation Reservoir Characterization pore pressure wave-induced pore pressure effective stress coarse sand Upstream Oil & Gas normal stress vertical effective normal stress...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-124
... of a fracture has been modeled by Barton-Bandis model (1985) in many cases. This model is made from the results of many experiments. waste management Upstream Oil & Gas mechanical model Reservoir Characterization Downstream Oil & Gas normal stress fracture characterization information...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-070
... ABSTRACT: This paper reports the shear strength and deformation characteristics of compacted residual granite soil. Nine series of tests were conducted using computer control direct shear box apparatus with normal stress level ranging between 0.05 to 0.4 MPa. The influence of moisture content...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-301
... shear stress by electro-osmosis. The tilted-plate test For the tilted-plate test a clay sample is topped with a round steel disc and is pressed onto a steel plate using a normal stress of 37 kPa for 15 minutes to obtain a good and consistent adherence (see Figure 3). When the stress is removed...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-347
.... HCCE material normal stress soft ground shear strain compaction polystyrene Upstream Oil & Gas granite soil test result in-situ ground shear strength waste material sand-hcce mixture geotechnical utilization solid waste management Effectiveness compaction test shear stress mixture...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-299
... compression test, direct shear test and biaxial compression test were performed on pure rock joint specimens and cement milk grouted joint specimens. After cement milk grouting, the normal deformation characteristics of the joint was linear at the low normal stress level. But as normal stress increased...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-513
... and nonlinear strength envelopes occur only in the range of relatively low normal stress. Fig.6 illustrates the results of stability analysis for both the linear and nonlinear strength criteria. It is seen that use of the nonlinear criterion resulted with a signifi- cantly shallower critical slip surface...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-509
... pressure of 200 kPa (limit of testing equipment) in each tests and the normal pressure was reduced back to required value. Then, four individual samples were tested until the residual value was obtained, applying the normal stress of 50, 100, 150 and 200 kPa. The water contents and saturated densities...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-475
... of low normal effective stress (Flamand, 1998). For a rough clean joint, the peak strength at constant normal stress is reached after a small shear displacement. The shear resistance decreases with further shear displacement until the residual strength is eventually reached. By testing artificial rough...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-598
... distinguish the stress needed to pull off the clay in the direction perpendicular to the contact surface, defined as tensile adhesion and noted at (see Figure 1.A) and the stress needed to initiate sliding parallel to the contact surface when no normal stress is present, defined as shear adhesion and noted...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-600
... constant normal stiffness condition at an initial normal stress ranging from 0.13 MPa to 3.25 MPa, using a large scale CNS testing machine at a controlled strain rate of 0.5 mm/min. An analytical model has been developed to predict the shear resistance of bolted joints using the Fourier Series. The shear...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-580
... normal stress levels. The rational approach is also proposed to define the generation and progress of the potential cracks due to shear and tension failure in the matrix by using distinct element method (DEM). Simulation of a deep underground opening excavation in the discontinuous rock masses is carried...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-415
..., normal stress and dilation behaviour with shear displacements are compared with the laboratory results. It is observed that UDEC can predict the peak shear stress of unfilled joints under CNS, however, it overestimates the joint dilation as well as the normal stress. The maximum peak shear stress in UDEC...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-003
... Upstream Oil & Gas normal stress minimum principal stress minimum stress Reservoir Characterization strength strain energy stress state metals & mining criterion experiment fracture strength triaxial compression test Shirahama sandstone shear strain energy compression...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 31–September 3, 1986
Paper Number: ISRM-IS-1986-031
... Abstract.: A method for determining the complete regional stress field is presented. It is based on measurements of the normal stress supported by preexisting fracture planes (with various dip and strike) by means of hydraulic tests. The solution does not involve the stress field...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 31–September 3, 1986
Paper Number: ISRM-IS-1986-039
... reservoir geomechanics lfj test borehole conclusion Reservoir Characterization slot-perpendicular displacement LFJ relation contact seat pair Rock Stress Measurement displacement contact seat lye column borehole axis rock mass borehole axis normal stress deformeter determination...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-001
.... The heated block test, recently conducted in situ on an 8m 3 block of jointed gneiss, provides normal stress and temperature-dependent data such as deformation modulus, joint stiffness, joint permeability, thermal expansion, thermal conductivity and dynamic elastic modulus. Simpler tests conducted on singly...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-047
... level shear rate normal stress shear force rate effect Proceedings of the International Symposium on Weak Rock / Tokyo / 21-24 September 1981 Rate-dependent behaviour of rock joints Black quartz syenite A.M.CRAWFORD Royal School of Mines, Imperial College, London, UK J.H.CURRAN Department...

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