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Keywords: weak rock
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Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-113
...Rock at Great Depth, Maury & Fourmaintraux (eds), © 1989 Balkema, Rotterdam. ISBN 906191975 4 The behaviour and modelling of weak rocks Comportement et modelisation des roches peu resistantes Das Verhalten und die Modellierung von gering festern Gestein M.A.Addis Norwegian Geotechnical lnstitute...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-078
...Rock at Great Depth, Maury & Fourmaintraux (eds), © 1989 Balkema, Rotterdam. ISBN 90 6191 9754 Large deformation of weak rocks at depth - A numerical case study Grandes deformations des roches peu resistantes a grande profondeur - Etude de cas numerique GroBe Deformation weichen Felses in der Tiefe...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-095
... are some obvious drawbacks with this design. The cost for reinforcing fair and weak rock is considerable and such work can interfere badly with the excavation time schedule. reservoir geomechanics waterflooding Reservoir Characterization natural gas storage CNG gas monetization vertical...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-138
... metals & mining strength Rock Strata stone masonry structural geology steel rib shotcrete dynamic loading deterioration reservoir geomechanics displacement convergence roadway Clay Rock Reservoir Characterization strata deformation Upstream Oil & Gas weak rock lining...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-213
...Proceedings of the International Symposium on Weak Rock / Tokyo /21-24 September 1981 General report on papers presented at the International Symposium on Weak Rock KOICHI AKAI Kyoto University, Japan Mechanics related to soft fractured weathered rock were directly related to the stability of dams...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-103
... Deformations, arising in weak rocks subjected to the action of external forces, are functions of the time too. The theory of Voltera-Rabotnov [1], [2] will be used for determination of these rheological deformations. For the case of nonhomogeneous, multicomponent and anisotropic rocks...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-078
... metals & mining mudstone diameter shear resistance situ strength Reservoir Characterization shear vane technique shale vane apparatus strength weak rock emplacement shear vane structural geology artificial material strength test vane apparatus disturbance Embedment shear...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-158
...Proceedings of the International Symposium on Weak Rock I Tokyo 121-24 September 1981 The stability of surrounding rock and its control' of railway tunnel in weak rock CHEN CHENGZONG, WANG SHICHUN & CHEN GUANGZONG ChinaAcademy of Railway Sciences THE FUNDAMENTAL CHARACTERISTICS OF WEAK ROCK The h i...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-214
... INTRODUCTION Engineering properties of weak rocks have been determined as per Indian (ISI) and International (IS) standards on cubes of 10 cm X 10 cm X 10 cm and NX size drill cores having L:D ratio of 1:1 and 2:1. Tests on 2:1 size samples needed correction to bring at par with lSI, and these...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-139
... Reservoir Characterization metals & mining technical approach weak rock structural geology destressed zone shale Upstream Oil & Gas moisture content coal seam strength rock roadway roadway pillar deformation maintenance cost entry layout Rock Pressure kg cm2...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-119
... isotropic within the range of depth from H 1 up to H 2 . The effective characteristics of the rock mass are determined by (4)((7)–(10) considering (14)–(15): Artificial Intelligence pore pressure formuli Reservoir Characterization logic programming variation weak rock reservoir geomechanics...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-145
...). metals & mining Ramp drift size reservoir geomechanics strength gunite Upstream Oil & Gas serpentinite steel support Reservoir Characterization horizontal stress cross-section ventilation tube stability shaft Finnish relation Helsinki weak rock Finland rock type bedrock...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-216
... of restraint by in situ stress. Although flat jack tests have been used on a wide variety of rock types(1),they do not appear to have been used on very weak rock (in the class: soil to weak rock, modulus 50–400 MPa). Upstream Oil & Gas compaction MPa plate bearing test reservoir...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-090
... destruction massif construction high tectonic stress tectonic stress metals & mining strength weak rock destruction take place extra-hard rock rock burst Proceedings of the International Symposium on Weak Rock / Tokyo /21.24 September 1981 Conditions of changing of extra-hard rock into weak...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-024
... Upstream Oil & Gas displacement linear trend weak rock theoretical behaviour different depth loading surface cyclic plate loading test diameter loading axis surface layer rock mass deformation loading phase hydrostatic component loading cycle settlement Proceedings of the...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-050
...Study of physico-mechanical properties of weak rock underlaying structure foundations D.D.SAPEGIN, N.M.KARPOY & G.M.PETROSYAN B.E. Vedeneev VNIlG, Leningrad, USSR The foundation of the Ust-Ilim Hydro Power Plant structures includes a thick trappean intrusion underlaid by sedimen- tary rock. The...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-051
... ABSTRACT It is difficult to make specimens of regular shape of weak rocks as they disintegrate and fail along planes weakness while coring or cutting. Various rock indices based on testing irregular lumps provide a valuable means of predicting the strength. Strength of weak rocks determined by...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-141
... (Hagan, 1977). The above mechanisms are listed approximately in their chronological order of occurrence but by no means in their order of decreasing importance. In most weak rocks, mechanisms 3,4 and 5 (see listed above) have the greatest ability to create excessive overbreak. (Figure in full paper...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-191
... Reservoir Characterization metals & mining Engineering Upstream Oil & Gas tension crack Rock mechanics reservoir geomechanics geotechnical consultant floor heave foundation shaft geotechnical study weak rock construction deformation multi-discipline approach evaluation...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-151
... findings and practical experience. A very instructive example is a publication by L.v. Rabcewicz in 1965 (8) tunnel design NATM footing construction miner ring closure time rabcewicz excavation hiraishi tunnel settlement weak rock application flexibility tunnel deformation Artificial...

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