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Keywords: criteria
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-310
... evaluated instead of uni- directional flow conditions. Conventional filtration criteria for geotextiles, established for steady flow conditions, state that for a uniformly graded soil, geotextile opening size must be smaller than a characteristic diameter of base soil, say D85 (some times this criterion...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-560
... such as bridging the area or backfilling the empty stopes were also costed. To aid HDC a risk based decision making process was developed. A key element of the professional advice to HDC was the compilation of risk criteria established by various public organisations (Figure 4). The decisions...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-034
... ABSTRACT: This paper is in two parts. The first part presents an overview of the strength of intact rock. A short commentary on various methods of fitting failure criteria to experimental data follows, it is demonstrated that the method of fitting the criterion to the test data has a major...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-139
...-site repository quantity repository contaminated soil criteria contract remediation contract construction remediation project albion explosive facility objective development plan contamination land use MANAGING RISKS IN A LARGE REMEDIATION PROJECT ALBION EXPLOSIVES FACILITY Peter N...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-069
... major criteria of the project is to control the post construction settlement of road embankments, which have been constructed as either "rockfills" or "earthfills". This paper presents the measures used to control the compaction and settlement of the fill embankments, as well as the results of field...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-006
... government criteria proceedings consequence QRA judgement hazard Hong Kong safety risk and uncertainty assessment Engineering consideration geotechnical engineering office probability QUANTITATIVE RISK ASSESSMENT : APPLICATION, MYTHS AND FUTURE DIRECTION Ken Ho1, Eric Leroi2 & Bill Roberds3...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 10–12, 1990
Paper Number: ISRM-IS-1990-016
... relevant Rock Mechanics criteria. 1 INTRODUCTION Location and Geology Western Areas Gold Mine is situated approximately 50 km South West of Johannesburg, near the town of Westonaria. The mine chiefly exploits the conglomerate strata of the Upper Elsburg and Ventersdorp contact reefs of the Witwatersrand...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-070
... Artificial Intelligence residual strength region application failure strain Reservoir Characterization strength peak strength region Strength Reduction Upstream Oil & Gas criteria tunnel movement reservoir geomechanics displacement residual region internal pressure strength...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 30–September 2, 1989
Paper Number: ISRM-IS-1989-097
... Reservoir Characterization structural geology reservoir geomechanics criterion wellbore integrity strength shale peak strength Upstream Oil & Gas criteria specimen envelope Wellbore Design pore pressure sandstone investigation elevated temperature instability carboniferous...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-028
... paper describes the geological and geotechnical conditions, and the criteria for the positioning of the cavern, the design of flexible support (shotcrete and bolts), and the anchoring of crane beams. 1.- SCHEME DESCRIPTION The Manabao-Bejucal-Tavera (MBT) project is a hydroelectric project that develops...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 12–16, 1988
Paper Number: ISRM-IS-1988-011
... equivalent continuum, a 3-D strength crite- rion is generally required. Two of the classical strength criteria in incremental plasticity theory are the Mohr-Coulomb and Drucker-Prager crite- ria which define the simple yield surfaces of Fig. 1 in 3-D principal stress space. A suitable shape ofyield surfaces...
Proceedings Papers

Paper presented at the ISRM International Symposium, August 31–September 3, 1986
Paper Number: ISRM-IS-1986-063
... Abstract: For many years the decision for using steel liners in a pressure tunnel was fundamented on empirical criteria, evaluating the stress level based on vertical and horizontal overburden. During the last years the hydraulic fracturing test has been developed as a fundamental tool for...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-055
... reservoir geomechanics cavern karst cavern cross-section classification Institute strength criteria Reservoir Characterization rockfall engineering press evaluation limestone Upstream Oil & Gas criteria local stability weak structural face pressure cell stability rock mass...
Proceedings Papers

Paper presented at the ISRM International Symposium, May 26–28, 1982
Paper Number: ISRM-IS-1982-056
... SUMMARY: The Mauranger Hydro-Electric Power Plant in Western Norway utilizes a 455 metre static head unlined pressure shaft. The paper describes the investigations performed and the criteria applied for the design of the shaft. ZUSAMMENFASSUNG: Die Wasserkraftanlage Mauranger in West...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-058
... obtained were examined and classified according to the system of classifying rock core samples described in Table 1. Of the four classification criteria used, the hardness of rock fragments, the interval between adjacent fractures, and the fracture condition are independent criteria. The criterion of RQD...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-150
... CIRCULAR TUNNEL (PLASTIC STATE) When the tunnel is located deep below the ground surface, the tangential streSS O~e given by equation (2) increases beyond r5 elastic limit of the rock,which then ente the plastic state. If the rock conforms 1 to Mohr-Coulomb's yield criteria (internal friction theory), it...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 21–24, 1981
Paper Number: ISRM-IS-1981-219
... Reservoir Characterization shield assumption ground structure safety different country Engineer safety concept stiffness soft soil tunnel structure bedded ring design criteria tunnel structural design model criteria Design Procedure excavation design model deformation...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 27–29, 1978
Paper Number: ISRM-IS-1978-026
... regression Simulation objective Wave Propagation Law confidence interval dynamic behavior residual relative explosive charge judicious determination representativeness fundamental condition test stage consideration determination propagation law criteria regression curve...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 27–29, 1978
Paper Number: ISRM-IS-1978-027
... which the dam was subjected to be kept within acceptable limits. Upstream Oil & Gas criteria diameter excavation hole distance Spain Villalcampo Dam vicinity auscultation system operation altitude nuclear plant turbine hall iberduero linear metre left hand buttress buttress...
Proceedings Papers

Paper presented at the ISRM International Symposium, September 27–29, 1978
Paper Number: ISRM-IS-1978-024
... Upstream Oil & Gas dynamic stress detonation expression Reservoir Characterization criterion characteristic impedance damage criterion tensile strength dynamic tensile strength particle velocity criteria charge weight rock mass ground vibration strength Rock mechanics...

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