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Keywords: RMR
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Proceedings Papers

Paper presented at the 54th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2020
Paper Number: ARMA-2020-1712
... metals & mining ramp rehab convergence reservoir geomechanics upstream oil & gas displacement failure zone rmr rock mass strength development drift shotcrete excavation turquoise ridge inflatable bolt reservoir characterization extensometer maximum failure zone mesh...
Proceedings Papers

Paper presented at the 52nd U.S. Rock Mechanics/Geomechanics Symposium, June 17–20, 2018
Paper Number: ARMA-2018-750
... failure versus Rock Mass Rating (RMR). These guidelines are intended to aid the engineer in the design of ground support capacity appropriate to the rockmass conditions and intended use of the excavation, thereby improving safety in underground mines. Reservoir Characterization reservoir...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-546
... into the ground in a vertical plane. In order to determine whether the changes seen actually exist, shear wave velocities were measured in location of known rock characterization. These shear wave velocities were then compared with the Rock Mass Rating (RMR) and previously published correlations...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-807
... Abstract Underground gold mines in Nevada are exploiting increasingly deeper ore bodies comprised of weak, to very weak rock masses. The Rock Mass Rating (RMR) classification system is widely used at underground gold mines in Nevada and is applicable in fair to good quality rock masses, but...
Proceedings Papers

Paper presented at the 49th U.S. Rock Mechanics/Geomechanics Symposium, June 28–July 1, 2015
Paper Number: ARMA-2015-690
... shotcrete. It includes the use of cemented rock fill and a quick mining sequence to minimize ground exposure time and unraveling ground. ridge joint venture metals & mining rock mass classification sediment turquoise ridge joint venture mineralization shaft station rmr reservoir...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-640
... briefly present the fundamentals of constitutive laws and point out the function of yield (failure) criteria in their developments. Furthermore, their features and shortcomings are discussed in view of experimental results. relation RMR hoek-brown criterion rock mass Reservoir Characterization...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-120
... performed at 4850 level. In this paper a summary of these studies are presented. The geotechnical information was used for the development of new geomechanical characterization models using Data Mining techniques in the scope of the DUSEL project. Models for RMR, Q and GSI were developed using several...
Proceedings Papers

Paper presented at the 46th U.S. Rock Mechanics/Geomechanics Symposium, June 24–27, 2012
Paper Number: ARMA-2012-288
... highly altered dacite dikes. The highest grade ore is typically the weakest, and ranges from the Very Poor to Poor rock category, as defined by the rock mass rating (RMR) of Bieniawski (1976). The combination of a low dipping ore body geometry, complex geology, and weak rock requires the undercut drift...
Proceedings Papers

Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-548
... expression RMR information prediction evaluation rock mass calculation knowledge error measure strength parameter application transformation 1. INTRODUCTION The evaluation of geomechanical parameters in underground works corresponding to the preliminary stages of design is normally performed...
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
... in situ wavespeed to intact wavespeed as a function of joint spacing. These ratios can serve as a direct measure of rock mass quality. They can also be used to compute in situ modulus. The wavespeed ratio was compared to the Rock Mass Rating 89 (RMR) [2]. The wavespeed ratio appears to offer a direct...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-353
... Reservoir Characterization study zone poor poor fair good mapping team RMR periphery shaft Discontinuity orientation Engineer Rock mechanics Symposium reproducibility rock classification comparative study classification mapping contractor rock mass classification 1...
Proceedings Papers

Paper presented at the The 42nd U.S. Rock Mechanics Symposium (USRMS), June 29–July 2, 2008
Paper Number: ARMA-08-237
... the most well-known geomechanical classifications based on the RMR system (joint spacing, character of joint surfaces and orientation of joints in relation to the load direction) [4,5,6,7]. The authors of this paper present an evaluation method for rock mass quality on the basis of endoscopic...
Proceedings Papers

Paper presented at the Golden Rocks 2006, The 41st U.S. Symposium on Rock Mechanics (USRMS), June 17–21, 2006
Paper Number: ARMA-06-1169
... ABSTRACT: Various empirical relationships have been derived between rock mass classifications such as Rock Mass Rating (RMR) and Geological Strength Index (GSI) and the modulus of deformation of rock masses. Experience in New Zealand has indicated that these empirical approaches can...
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
... compressive strength and Rock Mass Rating (RMR). 1. BACKGROUND Geography and geology have long factored into military and intelligence decision making. Country geographic studies have been performed since the WWII era that provided a general treatment of the country geology, geography, soils, groundwater and...
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-01-1223
... ABSTRACT : The Rock Mass Rating (RMR) has been used to estimate rock strength and deformation parameters of shallow rock layers for use in the analysis and design of laterally loaded, rock-socketed foundations. A foundation design model was developed and calibrated with seven full-scale load...
Proceedings Papers

Paper presented at the Vail Rocks 1999, The 37th U.S. Symposium on Rock Mechanics (USRMS), June 7–9, 1999
Paper Number: ARMA-99-0271
... Upstream Oil & Gas strength correlation rock mass Reservoir Characterization New South Wales RMR block size hock-brown criterion criterion discontinuity validation reservoir geomechanics rock mass field verification criteria Bieniawski GSI RQD INTRODUCTION ABSTRACT...
Proceedings Papers

Paper presented at the The 27th U.S. Symposium on Rock Mechanics (USRMS), June 23–25, 1986
Paper Number: ARMA-86-0760
... Reservoir Characterization structural geology criterion information management stress-strain response US government empirical constitutive relationship reservoir geomechanics constitutive relationship Upstream Oil & Gas RMR procedure excavation principal stress deformation...

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