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<p>Uniaxial Compressive Strength (UCS) is the most important rock parameter required and determined for rock mechanical studies in most civil and mining projects. In this study, two soft computing approaches, which are known as neuro-fuzzy inference system ...
Reference: Middle-East Journal of Scientific Research 15 (6): 840-845, 2013
<p>The aim of this paper is to estimate the uniaxial compressive strength (UCS) of rocks with different characteristics by using genetic expression programming (GEP). For this purpose, five different types of rocks including basalt and ignimbrite (black, yellow, ...
Reference: Journal of Rock Mechanics and Geotechnical Engineering 5 (2013) 325–329
<p>Although many intact rock types can be very strong, a critical confining pressure can eventually be reached in triaxial testing, such that the Mohr shear strength envelope becomes horizontal. This critical state has recently been better defined, and correct ...
Reference: ournal of Rock Mechanics and Geotechnical Engineering Volume 5, Issue 4, Pages 249-334 (August 2013)
The selection of the blast damage factor D is a technical support question that arises frequently in relation to the use of the Hoek-Brown failure criterion. This note sets out the origin and background of this factor and provides some guidance on its selection ...
Reference: Technical note for RocNews - February 2, 2012 Winter 2012 Issue
<p>The purpose of this study was to clarify the relationship between axial point load strength and uniaxial compressive strength in hydrothermally altered rocks, which are typical of the soft rocks found in northeastern Hokkaido, Japan.</p>
Reference: International Journal of the JCRM vol.7 (2011) pp.17-23
This paper presents case studies for both rock mass modulus and rock mass shear strength in an attempt to assess the validity of the approach of using GSI and the Hoek-Brown criterion. It is concluded that for some rock masses the method works well, but in ...
Reference: 1st Southern Hemisphere International Rock Mechanics Symposium an ISRM-Sponsored Regional Symposium held in Perth, Australia, September 2008
The geologically neutral term bimrocks (block-in-matrix rocks) includes melanges, fault rocks, lahars, weathered rocks and other geologically complex mixtures of strong rock blocks embedded within weaker matrix rocks. Bimrocks have mechanical contrast between ...
Reference: 42nd U.S. Rock Mechanics Symposium and 2nd U.S.-Canada Rock Mechanics Symposium, June 29 - July 2, 2008 San Francisco, California
Hoek E. et al.  
In this paper the historical development of the Hoek-Brown failure criterion and the associated Geological Strength Index (GSI) has been presented.
Reference: Soils and Rocks, No. 2. November 2007.
In this paper an analysis of in situ rock mass modulus measurements for a wide range of rock types from China and Taiwan has resulted in two new equations for estimating rock mass deformation modulus.
Reference: International Journal of Rock Mechanics & Mining Sciences 43 (2006) 203-215
<p>Whether the aim be to prevent collapse or to promote it, rock strength is an important factor in many practical problems of rock mechanics. The property of &lsquo;strength&rsquo; of a rock derives, as with all solids, from various types of inter-atomic ...
Reference: U.S. Geological Survey, Menlo Park, California, August 23-24,2004