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Keywords: rock mass
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-133
... was 250 days and that of cooling phase was 180 days. The heater surface was controlled to be 100 °C during the heating phase. A number of sensors were installed in both buffer and rock mass during the test. The field experiment leads to a better understanding of the behavior of the T-H-M phenomena...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-034
..., as extended to rock mass strength. The parameters mi and s c are not material properties if the exponent is fixed at 0.5. Published values of mi can be misleading as mi does not appear to be related to rock type. The Hoek-Brown criterion can be generalised by allowing the exponent to vary. This change...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-299
... ABSTRACT: Grouting has been in use for a long time, but it is still regarded as a technique rather than engineering. The study of ground improvement by grouting is rare especially in jointed rock mass. In this study, to examine the grouting effect on the property of rock joint, joint...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-459
... leads in a rock mass quality underestimation, which mainly due to the rating adjustment for discontinuity orientations as especially proposed for rock slopes. The case records evaluation indicate that the rock mass rating without taking into account the discontinuities adjustment give a more realistic...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-498
... ABSTRACT: Post-mortem analyses of seven slope failures in rock slope are reported. The analysis is based on simple force equilibrium of a block of rock surrounded with several planes of discontinuity and separated from the neighbouring rock mass in a rock slope. Driven by the own weight...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-494
... ABSTRACT: Application of the Hoek-Brown failure criterion to New Zealand hard greywacke rocks leads to unrealistically high predictions of rock mass strength for better quality rock masses and lower predictions for poorer quality rock masses. To further investigate linkages between rock masses...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-429
... slopes and of shearing through either the intact rock or rock mass substance where such critically orientated discontinuities are absent. Details of STEPSIM4 (Monte-Carlo based software developed for this analysis), input rock mechanics parameters, ensuing strength outputs and several illustrative...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-484
... of the rock mass is approximated by an equivalent Cosserat continuum. This implies the introduction of couple stresses and internal rotations which model the relative rotations between blocks and the bending stiffness of the blocks. The model is implemented into a large strain finite element program...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-425
... ABSTRACT: Engineering geologists and geotechnical engineers often have to deal with problems of stability of natural or man-made slopes built up by jointed and weathered rock mass. This paper deals with the stability conditions of an important rhyolite cliff, the stability of which has...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-533
... ABSTRACT: This paper briefly outlines geotechnical experiences from underground construction on rock mass classification, standard support patterns, deformation observations and rock bolt pullout load tests of Lam Ta Khong Pumped Storage project, Thailand. A case history on soft ground...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-518
... ABSTRACT: There are numerous methods of empirical rock slope design presented in published literature. The methods rely on initial characterisation of the rock mass, typically Bieniawski's RMR or a close derivative, with factoring to allow for structure, blasting and weathering. Fundamentally...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-470
... in porous media colluvium state rail authority coalcliff station landslide installation rock mass stanwell park claystone cliffline LANDSLIDING OF THE SOUTH COAST RAILWAY THE COALCLIFF SLIDE Andrew R. Leventhal 1, Peter C. Stone 2 and David Christie 3 ABSTRACT A major landslide has influenced...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-529
... ABSTRACT: The authors have proposed and discussed temporary storage of low temperature materials such as LNG, LPG and frozen food in openings excavated in rock mountains. In this case, as the rock mass around the openings will receive thermal hysteresis of low temperatures, it is necessary...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-564
.... The main features that characterize this field of geo-engineering are: the relative good quality of the rock masses; the relevant dimensions of the voids; the requirements for long term stability; the necessity of limited artificial support; the need for suitable design methods and for a link...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-466
... and friction angle. However, cohesion may be highly variable in the deposits and it deteriorates on loading, leading to precarious conditions of stability. Sub-vertical cuts in pozzolana may also collapse due to the presence of discontinuities hidden in the rock mass, such as tension cracks at the top...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-427
...THE APPLICATION OF ROCK MASS RATING AND SLOPE MASS RATING ON SLOPE CUTTING AT A SECTION OF LIWA KRUI ROADWAY, WEST LAMPUNG, SUMATERA, INDONESIA Djakamihardja Achmad S. 1and Subowo Eko 2 ABSTRACT An empirical design method using Rock Mass Rating (RMR) and Slope Mass Rating (SMR) have been applied...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-573
... the rock mass, several site investigations, in situ and lab tests have been performed. Also, a full scale gallery has been built at the weakest part of the predicted profile. INTRODUCTION In the liaison by a High Speed Railway between Barcelona (Spain) and Montpellier (France), the cross of the Pyrenees...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-437
... of HackÕs (1998) SSPC system which places less influence on rock quality designation and unconfined compressive strength than previous rock mass rating systems. The Hack weathering susceptibility rating has been modified by using chemical index of alteration values from XRF major element analysis. Another...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-487
... occurred in a zone with slightly weathered volcanic deposits and slope debris. Reservoir Characterization pyroclastic deposit cohesion stability probability netherlands antilles bunker hill SABA shear box test geomechanical analysis reservoir geomechanics Thickness Island rock mass lava...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-432
.... Needs for research on visualisation, rock mass strength assessment, and paths to failure are identified. INTRODUCTION Open pit mining of black coal from the Bowen and Sydney-Gunnedah Basin regions is a major contributor to the Australian economy. Over the past 15 years there have been rapid developments...

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