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Method to determine coal-rock joint conditions by tomography data: Theory and lab test

机译:通过断层扫描数据确定煤岩关节条件的方法:理论与实验室测试

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The article describes the results of uniaxial compression tests of rectangular specimens made of geomaterial with a view to investigate coal-rock contact conditions on a lab scale. Based on the acoustic sounding data, tomography was carried out to find spatial distribution of longitudinal wave velocity F in a specimen per stages of loading. Using the empirical relation V(σ), the mean normal stress was calculated and taken as the input data in the solution of an inverse problem for determination of boundary conditions. The model calculations show that under vertical compression, near slip sections of coal-country rock contact, areas of horizontal tension arise, which are the most probable sources of failure and outbursts.
机译:本文介绍了由地磁制成的矩形标本的单轴压缩试验的结果,以研究实验室规模的煤岩接触条件。基于声学探测数据,进行断层扫描,以在每个装载的标本中找到纵向波速度F的空间分布。使用经验关系v(σ),计算平均正常应力并作为确定边界条件的逆问题解决方案中的输入数据。模型计算表明,在垂直压缩下,靠近煤乡岩石接触的滑动部分,出现水平张力区域,这是最可能的失败和爆发来源。

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