封圧下における岩石ばりの座屈試験 : 褶曲の生成機構に関する基礎的研究

概要

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For the purpose of investigating the mechanics of folding process that is formed in relatively shallow undergound, we have conducted buckling tests on single layer and three-layered rock beams of KIMACHI sandstone and TOHOKU marble under moderate confining pressures, namely 0, 100, 300 and 500 kg/cm^2. From this study, it became clear that folding deformation of rock beam under moderate confining pressure initiates at the near point of buckling fracture stress, and failure strength of those conform to the buckling experimental formula suggested by Shanley. Also, by means of conducting buckling test using intact rock, we confirmed that folding degree of multi-layered rock beam depends on thickness of unit beam rather than total thickness of beam, and that of mulit-layered beam constituted with various rocks depends on competent layer.
一般社団法人日本応用地質学会の論文
1987-06-25