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Keywords: rock mass quality
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Proceedings Papers

Paper presented at the 55th U.S. Rock Mechanics/Geomechanics Symposium, June 18–25, 2021
Paper Number: ARMA-2021-1576
... mechanics geometry iterative process rock mass quality Abstract Many parameters are used to calculate the stability of slopes in an open pit mine. An important parameter is Factor D, which is used to represent the disturbance zone of a slope as a result of the stress relaxation and blasting...
Proceedings Papers

Paper presented at the 53rd U.S. Rock Mechanics/Geomechanics Symposium, June 23–26, 2019
Paper Number: ARMA-2019-1616
... during the feasibility studies are useful for providing information on the rock mass quality along the potential tunnel alignment and for visualization of the existing sub-surface geological conditions. This paper describes the various studies performed along proposed tunnel alignments in the Himalayas...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-396
... excavation istanbul strait design parameter reservoir characterization sandstone deep excavation structural geology rock mass quality transition box displacement upstream oil & gas subsurface profile tunnel atb excavation anchor parson brinckerhoff construction excavation...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-115
... adit rock mass quality classification Himalayan region deformation modulus Singh deformation equation indirect method 1. INTRODUCTION The modulus of deformation of rock mass is determined by conducting plate jacking, plate loading, flat jack, pressure chamber and Goodman jack tests. The rock...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-293
... quality has a great influence on the shaft resistance, however the mechanisms and details of such influence are poorly understood since the rock mass quality is usually not defined during these load test programs. This paper presents a laboratory attempt to study the influence of two significant rock mass...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-386
... & Gas fault zone characterization application rock mass frequency discontinuity excavation ground condition penetration rate exploration fault zone material Los Angeles Fault Zone rock mass quality tunnel 1. INTRODUCTION Rock mass classification as applied to tunneling is primarily...
Proceedings Papers

Paper presented at the 44th U.S. Rock Mechanics Symposium and 5th U.S.-Canada Rock Mechanics Symposium, June 27–30, 2010
Paper Number: ARMA-10-504
... ABSTRACT: The influence of joint spacing on seismic cross-hole wavespeed was measured in unweathered sandstone in order to develop correlations between rock mass quality and in situ modulus. Cross-hole seismic wavespeed were determined in three study areas with closely, moderately and widely...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-165
... to consider both material and labour but also costs associated with delays in production. Such delays can have significant monetary consequences. It is an accepted fact that ore pass longevity depends largely on such design factors as rock mass quality, ratio of field stress to rock mass strength and support...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-237
... ABSTRACT: The experiences in evaluating the rock mass quality with the help of Endoscopic Rock Mass Factor (ERMF) are described. ERMF was worked out by the authors and research was carried out in the Polish underground coal mines. ERMF enables the quantitative and qualitative estimation...
Proceedings Papers

Paper presented at the Alaska Rocks 2005, The 40th U.S. Symposium on Rock Mechanics (USRMS), June 25–29, 2005
Paper Number: ARMA-05-871
..., fair, good, or excellent. Table 1 provides the general definitions for strength and rock quality as applied in this procedure. The strength classification is modified from Bieniawski [1] and the Rock Quality Designation (RQD) of Deere [2] is used to define the initial rock mass quality. The quality...
Proceedings Papers

Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), July 7–10, 2001
Paper Number: ARMA-01-0401
... whose extraction would require an uneconomic lay-back of the existing pit wall. Rock mass quality at West Generator allowed the use of a sublevel stoping mining method with cemented rockfill. Successful application of the sublevel stoping mining method at West Generator and its relatively favorable cost...
Proceedings Papers

Paper presented at the The 35th U.S. Symposium on Rock Mechanics (USRMS), June 5–7, 1995
Paper Number: ARMA-95-0431
...-squeezing, and the squeezing ground conditions. correlation tunnel section excavation Singh rock mass quality Barton ground condition design chart support system rock mass number Reservoir Characterization empirical approach consideration rock mass tunnel strength tunnel depth non...
Proceedings Papers

Paper presented at the The 27th U.S. Symposium on Rock Mechanics (USRMS), June 23–25, 1986
Paper Number: ARMA-86-0840
.... Results from in-situ monitoring show that a measurement of relative abrasivity using the Cercharscratch abrasivity test provides a basis for the assessment of tool consumption. This can be modified by also considering the effects of the machine specification and the rock mass quality. INTRODUCTION...
Proceedings Papers

Paper presented at the The 23rd U.S Symposium on Rock Mechanics (USRMS), August 25–27, 1982
Paper Number: ARMA-82-1091
.... It is an on-going project and currently holds 120 case histories. The influence exerted by slope geometry, structure and rock mass quality on mine slope stability is examined with reference to both projects. 1091 1092 ISSUES IN ROCK MECHANICS CO VE TIO AL WE OF TET AHED At E E F IL E8 LATE AL/LO BIT I AL...
Proceedings Papers

Paper presented at the The 16th U.S Symposium on Rock Mechanics (USRMS), September 22–24, 1975
Paper Number: ARMA-75-161
... ESTIMATION DES SOUTENMENTS NÉCESSAIRES POUR LES EXCAVATIONS SOUTERRAINES ABSCHÄTZUNG DES NÖTIGEN FELSAUSBAUES IM HOHLRAMBAU An analysis of some 200 case records has revealed a useful correlation between the amount and type of permanent support and the rock mass quality Q, with respect...
Proceedings Papers

Paper presented at the The 8th U.S. Symposium on Rock Mechanics (USRMS), September 15–17, 1966
Paper Number: ARMA-66-0237
... Artificial Intelligence displacement breakage deformation modulus failure envelope construction near-surface construction rock mass rock mass quality foundation Chapter 11 DESIGN OF SURFACE AND NEAR-SURFACE CONSTRUCTION IN ROCK by D. U. Deere, A. J. Hendron, Jr., F. D. Patton, and E. J. Cording...

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