About: Rock mechanics is a research topic. Over the lifetime, 6148 publications have been published within this topic receiving 164307 citations.
Papers published on a yearly basis
01 Jan 1969
TL;DR: In this article, Mecanique des roches and Analyse des contraintes were used to construct Elasticite Reference Record (ER) and Elasticite reference record (ER).
Abstract: Keywords: Mecanique des roches ; Analyse des contraintes ; Elasticite Reference Record created on 2004-09-07, modified on 2016-08-08
TL;DR: This paper showed that at low normal stress the shear stress required to slide one rock over another varies widely between experiments and at high normal stress that effect is diminished and the friction is nearly independent of rock type.
Abstract: Experimental results in the published literature show that at low normal stress the shear stress required to slide one rock over another varies widely between experiments. This is because at low stress rock friction is strongly dependent on surface roughness. At high normal stress that effect is diminished and the friction is nearly independent of rock type. If the sliding surfaces are separated by gouge composed of Montmorillonite or vermiculite the friction can be very low.
••01 Dec 1974
TL;DR: In this article, an analysis of some 200 tunnel case records has revealed a useful correlation between the amount and type of permanent support and the rock mass quality, with respect to tunnel stability.
Abstract: An analysis of some 200 tunnel case records has revealed a useful correlation between the amount and type of permanent support and the rock mass qualityQ, with respect to tunnel stability. The numerical value ofQ ranges from 0.001 (for exceptionally poor quality squeezing-ground) up to 1000 (for exceptionally good quality rock which is practically unjointed). The rock mass qualityQ is a function of six parameters, each of which has a rating of importance, which can be estimated from surface mapping and can be updated during subsequent excavation. The six parameters are as follows; theRQD index, the number of joint sets, the roughness of the weakest joints, the degree of alteration or filling along the weakest joints, and two further parameters which account for the rock load and water inflow. In combination these parameters represent the rock block-size, the interblock shear strength, and the active stress. The proposed classification is illustrated by means of field examples and selected case records. Detailed analysis of the rock mass quality and corresponding support practice has shown that suitable permanent support can be estimated for the whole spectrum of rock qualities. This estimate is based on the rock mass quality Q, the support pressure, and the dimensions and purpose of the excavation. The support pressure appears to be a function ofQ, the joint roughness, and the number of joint sets. The latter two determine the dilatency and the degree of freedom of the rock mass. Detailed recommendations for support measures include various combinations of shotcrete, bolting, and cast concrete arches together with the appropriate bolt spacings and lengths, and the requisite thickness of shotcrete or concrete. The boundary between self supporting tunnels and those requiring some form of permanent support can be determined from the rock mass qualityQ.
01 Jun 1980
TL;DR: In this article, the geotechnical aspects of the design of underground openings for mining and civil engineering purposes are discussed, and a number of worked examples to assist the reader in applying the techniques described to his or her own problems.
Abstract: This book deals with the geotechnical aspects of the design of underground openings for mining and civil engineering purposes. It contains a number of worked examples to assist the reader in applying the techniques described to his or her own problems. The data are presented under the following chapter headings: (1) planning considerations; (2) classification of rock masses; (3) geological data collection; (4) graphical presentation of geological data; (5) stresses around underground excavations; (6) strength of rock and rock masses; (7) underground excavation failure mechanisms; (8) underground excavation support design; (9) rockbolts, shotcrete and mesh; (10) blasting in underground excavations; (11) instrumentation. Several appendices deal with: isometric drawing charts, stresses around single openings, two-dimensional boundary element stress analysis, determination of material constants, underground wedge analysis, and conversion factors. A very extensive bibliography is included.
01 Jan 2010
TL;DR: The Mecanique des roches Reference Record was created on 2004-09-07, modified on 2016-08-08 as discussed by the authors, and it was updated in 2016.
Abstract: Keywords: Mecanique des roches Reference Record created on 2004-09-07, modified on 2016-08-08
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