Abstract

The article presents a case-study of change in the seismic energy absorption coefficient with changing mining and geological conditions during the exploitation of one of the longwalls at the Polish coal mine Ruda. Several stages of longwall excavation exploitation, differing in stress conditions, were selected for the analysis. The results obtained show that low attenuation occurs in areas of high stress concentration and, conversely, high attenuation is associated with the weakening of the rock mass.

中文翻译：

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用于评估采矿长壁板长度的地震能量吸收系数的地震声学方法——案例研究

摘要

本文介绍了在波兰 Ruda 煤矿之一长壁开采过程中，地震能量吸收系数随采矿和地质条件变化而变化的案例研究。选择不同应力条件的长壁开挖开采的几个阶段进行分析。获得的结果表明，低衰减发生在高应力集中区域，相反，高衰减与岩体的弱化有关。