... ABSTRACT ABSTRACT: The application of Geological Strength Index (GSI) to Japanese rocks is discussed. There have been very few attempts at using the GSI in Japan. First, we tried to compare GSI to the Japanese conventional classification for NATM tunneling. The support requirement...

... analysis. Although there are many ways to determine the deformation modulus of a rock mass by using various in-situ and laboratory testing techniques, the application of rock mass classification systems is one of the more practical ways. Two methods of rock mass classification systems: RMR (Bieniawiski...

... in various studies, however a lack of perfect knowledge of rock mass structural parameters may lead to unpredictable results. This paper presents a new classification system for specifying Rockmass Drillability index (RDi). For this purpose, six parameters of rock mass, including texture and grain size...

... geological history. Local experience indicates that the combination of high intact strength and low defect persistence in a closely jointed rock mass is not well-suited to multi-parameter rock mass classification systems such as Rock Mass Rating (RMR) and Tunnelling Quality Index (Q). A preferred approach...

... and especially highly abrasive material such as quartz and non abrasive material such as limestone. This chart allows the classification of different materials using the background of tool wear and drillability problems. Applied in the correct framework of geological and geotechnical investigations, the LCPC...

... ABSTRACT ABSTRACT: This paper presents a new geomechanical classification for slopes, the SFi (Slope Failure Index) system based on the detailed examination of more than 700 road cuts. The SFi system adopts different evaluation codes based on the different geotechnical conditions. In the SFi...

... ABSTRACT ABSTRACT: Rock mass classification has come to be associated with the selection of a rock mass quality class on the basis of prior classification or rating of various rock mass parameters. The presence of a tunnel or slope or similar is implied, and the disturbance to local rock...

...) in the transition zone as well as a progressive improvement of the controlling “s” and “ m ” parameters to the intact values ( s ? 1, and m ? m i ). 1 INTRODUCTION 1.1 Background Rock mass classification systems, including the GSI system, for rock mass strength estimation (Marinos & Hoek 2000...

... ABSTRACT ABSTRACT: Rock mass classification developed as a tool to allow engineers and geologists to assess tunnel stability and support requirements during tunnel advance. In some circumstances little time or information is available for assessing rock mass conditions so classification...

... modeling classification shear drill core rock mass strength shear strength mapping vein Reservoir Characterization strength blind slough dam rock foundation rock mass Bazooka Shear Zone exfoliation joint foundation 1 INTRODUCTION Many dam structures around the world are reaching an age...

... of data. When attempting to apply these methodologies to novel conditions, such as in very hard, massive or foliated, unjointed rock at high stress, the nuances that are important under these conditions may be overlooked during TBM design. reservoir geomechanics classification correspond...

... of the rock masses exposed in the dam abutments and foundation area at the Khorram-Roud Dam in Hamadan, Western Iran. A comprehensive engineering geology and rock mechanics study was executed at the dam site. Different rock mass classification systems including RMR, Q, RQD, GSI, RMi and DMR were applied...

... of convergence and Tanimoto’s rock classification, which indicated relationships between support load, initial deformation rate and final deformation. Consequently, the proposed relationship is useful to predict the final deformation, the extent of loosening zone and the targeted value of convergence based...