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Large Deformation Support for Engineering Soft Rocks, bolt were analyzed. NPR bolt has a compound structure consisting of a cone-like piston sliding inside of an elastically deformable sleeve pipe, thus causing the bolt to have extraordinarily large elongation and high constant axial resistance. Static pull-out experiment, SHPB impact experiment and d恶名声 发表于 2025-3-25 18:21:05
Rock Mass Classification of Chalk Marl in the UK Channel Tunnels Using , owner Eurotunnel in the early 1990s. In this connection, the .-system was also used by the first author for logging precedent conditions in local tunnels in chalk marl, and by the construction consortium on a continuous basis in the TBM service and running tunnels. Although chalk marl is nearly atfaction 发表于 2025-3-25 22:25:57
Applications of the GSI System to the Classification of Soft Rocks,used in this chapter to highlight better the nature of the examined geomaterial. The weak rock masses that are examined in this study are generated by tectonical compression or weathering either the parent rock is initially soft or not. Cases, where the decreasing of the quality is expressed on theFluctuate 发表于 2025-3-26 01:17:09
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Geomechanical Characterization of Evaporitic Rocks,r geomechanical properties will be dealt with, emphasizing the sulphate rocks formed by gypsum and anhydrite. Finally, real cases of geotechnical problems associated with these rocks will be presented.包裹 发表于 2025-3-26 10:43:25
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s of soft rock masses;.Presents important case histories inv.This book offers a practical reference guide to soft rock mechanics for engineers and scientists. Written by recognized experts, it will benefit professionals, contractors, academics, researchers and students working on rock engineering pr