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Rock Mass Classifications - A Practical Approach in Civil Engineering was written in response to the many unanswered questions regarding this subject. Questions such as - Is Classification reasonably reliable? Can it be successful in crisis management of geohazards? Can a single Classification system be general for all rock structures? Is Classification a scientific approach? Laborious field research was undertaken in the Himalayan mountains by a team of scientists from the Central Mining Research Institute (CMRI), University of Roorkee (UOR), Central Soil and Material Research Station (CSMRS), U.P. Irrigation Research Institute (UPIRI), and Norwegian Geotechnical Institute (NGI) to answer these questions. The results obtained from the research work were systematically compiled to produce this book which bears particular relevance to civil, mining and petroleum engineers and geologists. "It is a Handbook of Rock Engineering" - Zhao Jian, School of Civil and Structural Engineering, Nanyang Technological University, Singapore. "I came across your new book - "Rock Mass Classification", absolutely fantastic" - Subodh K. Jain, U.S.A.
Philosophy of quantitative classifications - present day practice; shear zone treatment in tunnels and foundations -treatment for tunnels; rock material - uniaxial compression; rock quality designation - weighted joint density; Terzaghi's rock load theory - modified Terzaghi's theory for tunnels and caverns; rock mass rating (RMR) - applications of RMR; prediction of ground conditions for tunnelling - empirical approach; rock mass quality (Q) - system - the Q-system; rock mass number - inter-relation between Q and RMR; rock mass index - scale effect; rate of tunnelling - classification of ground/job conditions for rate of tunnelling; support systems in caverns - precautions; strength enhancement of rock mass in tunnels - residual strength in parameters; strength of discontinuities - shear strength of joints; shear strength of rock masses in slopes - Mohr-Coulomb strength parameters; type of rock slope failures - 3D wedge failure; slope mass rating (SMR) - support measures; landslide hazard zonation - a case history; allowable bearing pressure for building foundations - allowable bearing pressure; method of excavation - excavation techniques; rock drillability - other approaches; permeability and groutability - permeability; gouge material - gouge; engineering properties of hard rock masses -half-tunnels; geological strength index (GSI) - modulus of deformation; evaluation of critical rock parameters - critical parameters; insitu stresses - need for insitu stress measurement.
