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Keywords: direct shear test
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Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-014
..., aperture, filling, seepage, number of sets, block size and drill coring. Laboratory testing included: water content, porosity, density, absorption, swelling pressure, uniaxial compressive strength, point load test (PLT), Brazilian tensile strength (BTS) and direct shear test (DSH). A.L.T.E.A...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-056
... element method particle procedia engineering 191 Upstream Oil & Gas direct tension test triaxial compression test Artificial Intelligence friction direct shear test rock mass propagation Energy Balance kinetic energy hydraulic fracturing Simulation different energy component increment...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-103
... twinning and dislocation activity. The mechanical behaviour of carbonate rocks of a wide range of porosities has been documented by many previous studies [6–8]. Upstream Oil & Gas direct shear test shear displacement displacement experiment cip block ausama giwelli vertical stress...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-186
... favourable, undisturbed specimens were directly retrieved from the gouge material. Laboratory tests on the infilling material included: grain-size distributions and direct shear tests on both undisturbed and reconstituted specimens. A limited number of large-scale in situ shear tests on filled...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-184
... the in-situ tests were performed in the investigation tunnels excavated at the dam site of the PHED. This investigation used the results of three mul- tistage direct shear tests, according to the method suggested by the ISRM (1974), on 700 mm square samples with normal stresses ( n) ranging between 0.15 MPa...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-212
... that vertical faults are more likely to slip at deeper intervals where microseismic events were observed. At shallow injection intervals, where no seismicity was observed, horizontal faults are more likely to slip. The second approach, a velocity stepping direct shear test, showed that the friction coefficient...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-082
... of the stress dependent input parameters for pea gravel used as backfill. The input parameters have been calibrated using results from large oedometer tests and direct shear tests on a numerical oedometer test. To verify the obtained input parameters, a numerical shear test has been performed. It can be shown...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-076
... strength in direct shear tests. 1. Introduction The aim of this work is the description of the geotechnical properties of the volcanic materials existing in Arteara rock avalanche, located in Fataga ravine, in the south of Gran Canaria island (Canary Islands, Spain) (Figure 1). The geomorphology...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-023
... with those obtained in direct shear tests carried out on large blocks. The rock mass in study is characterized by the dominant presence of carbonaceous phyllite, by the intense folding and weathering, by its ductile behavior and by presenting a dominant failure mode controlled by the rock mass properties...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-045
... Micro Deval test on prismatic samples. The mechanical characterization used uniaxial compression tests and direct shear tests along open joints. An overview of the results obtained so far is presented in the next pages. Upstream Oil & Gas quartz direct shear test Reservoir...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2013, October 23–26, 2013
Paper Number: ISRM-EUROCK-2013-060
... Abstract This paper investigates the progressive shear behavior and asperity degradation of rock joints in the direct shear test using PFC2D. PFC is a discrete element code in which the intact material is represented by assemblies of circular particles bonded together. Traditionally, joints...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2012, May 28–30, 2012
Paper Number: ISRM-EUROCK-2012-105
... Reservoir Characterization strength specimen jacobsson reservoir geomechanics swedish nuclear fuel eurock 2012 Upstream Oil & Gas site investigation compressive strength fracture Wellbore Design rock type Laxemar shear test uniaxial compression test direct shear test Waste...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2010, June 15–18, 2010
Paper Number: ISRM-EUROCK-2010-046
... ABSTRACT: In order to evaluate the applicability of Acoustic Emission (AE) as an indicator of instability of active joints in dam structures, an extensive feasibility study was done on 40 joint samples. To this end, direct shear tests were conducted under different conditions (in various...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-078
...EFFECTS OF CONCRETE PLUG REPLACEMENT IN DAM FOUNDATIONS THROUGH DIRECT SHEAR TESTS NAKASHIMA, SHINICHIRO Kyoto University, Kyoto, JAPAN, snaka@nakisuna.kuciv.kyoto-u.acjp KISHIDA, KIYOSHI Kyoto University, Kyoto, JAPAN, kishida@toshi.kuciv.kyoto-u.acjp ADACHI, TOSHIHISA Geo-Research Institute...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2002, November 25–27, 2002
Paper Number: ISRM-EUROCK-2002-083
... properties of rock joints. No research, however, has ever been able to present the entire shear behavior, namely, the increase in the shear stress, the decrease (softening), and then the gradual arrival at the residual state. The authors previously performed direct shear tests on rock joints under constant...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-018
... profilometer, the values of the angles of first displacement ß obtained from a tilt test, and the values of i=arctg(µ/O)-øb obtained from direct shear tests. This allows one to write a relation between the value of the angles i, measured by the mechanical profilometer, and the horizontal strain given...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 96, September 2–5, 1996
Paper Number: ISRM-EUROCK-1996-019
... direct shear tests. Two examples of such results taken from Baldovin (1970) and Giani (1992) are shown in Figure 2. If the joint is filled with sandy or clayey material, both the dilational and frictional characteristics are altered (Papaliangas et aI., 1990 and 1993). Eurock '96, Barla (ed 1996...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 93, June 21–24, 1993
Paper Number: ISRM-EUROCK-1993-083
... friction sandblasted surface Portuguese Rock dilation rate strength stress dependent surface topography shear test consistent result comparative study testing machine marble peak dilation rate limestone diorite Upstream Oil & Gas resistance direct shear test normalised...

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