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冲击地压和瓦斯突出之类的异常破坏现象,大都被认为起因于地壳运动所造成的异常地压,或与残留于褶曲地带及断层附近的构造地压有关。然而,要从地质构造上判断四山矿上层煤层突出区中残留着由地质构造形成的异常地压则是困难的。
Abnormal damage such as rockburst and gas outburst are believed to be due to abnormal ground pressure caused by crustal movement or to tectonic earthquakes remaining in the fold zone and faults. However, it is difficult to judge from the geological structure that the abnormal pressure formed by the geological structure remains in the prominent area of the upper coal seam in the Sishan coal mine.