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Publications tagged with [RQD]

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<p>Rock Quality Designation (RQD), was introduced by Don Deere in the mid-1960s as a means of using diamond core to classify rock for engineering purposes. Subsequently it was incorporated into the Rock Mass Rating and Q-system classification methods which, ...
Reference: Canadian Geotechnical Journal 2016
In this work Data Mining tools are used to develop new and innovative models for the estimation of the rock deformation modulus and the Rock Mass Rating (RMR). A database published by Chun et al. (2008) was used to develop these models. The parameters of ...
Reference: Geotechnical and Geological Engineering August 2012, Volume 30, Issue 4, pp 787-801
The main rockmass classification systems make use of similar rockmass parameters. It is therefore shown how the input parameters of the RMR, Q and RMi systems can be combined into one set of tables. These enable the ground quality to be found directly and ...
Reference: Palmstrom, A., 2009: Combining the RMR, Q, and RMi classification systems. www.rockmass.net, 25p
This paper presents the result of comparisons between the modulus of deformation obtained from dilatometer tests and the geomechanical quality of the rock mass using the RMR classification ant the basic intact rock properties such as the uniaxial compressive ...
Reference: “Underground Works under Special Conditions” organizado en Madrid el 6 de julio de 2007, por ISRM.
This paper presents the result of comparisons between the modulus of deformation obtained from dilatometer tests and the geomechanical quality of the rock mass using the RMR classification and the basic intact rock properties such as the uniaxial compressive ...
Reference: ISP5-PRESSIO 2005 International Symposium
Various measurements of the block size or degree of jointing (i.e. density of joints, RQD, block volume, joint spacing) are described. It is concluded that the RQD measurements are encumbered with several limitations and that this parameter should be applied ...
Reference: Published in Tunnels and Underground Space Technology 20 (2005) 362-377
<p>"Support of Underground Excavations in Hard Rock" is the most complete and up-to-date manual for use in the design of excavations and support mechanisms for underground mines.</p>
Reference: Hoek's corner