盘县煤田逆冲推覆构造对岩石破坏程度分析——以盘县煤田南部边界响水镇逆冲推覆构造为例

Degree of rock damage caused by thrust nappestructures in Panxian Coalfield

  • 摘要: 矿井建设和布置过程中,不可避免地会布置在构造带这类岩石破坏程度较高的地段内。逆冲推覆构造作为一种特殊的构造类型,对岩石的破坏具有一定的复杂性和叠加破坏效应。本次为研究盘县煤田逆冲推覆断层对岩石的破坏程度,以盘县煤田南部边界响水镇鲁楚村的逆冲推覆断层为例,通过系统采取推覆构造中逆冲推覆断层上下盘岩石及同沉积环境、同层位未受断层破坏的岩石分别进行岩石物理力学性质实验,并结合逆冲推覆构造进一步分析。总结了逆冲推覆断层对岩石破坏的几点规律性,以期服务于矿井开采技术,特别是矿井支护等相关领域。研究这类规律对盘县煤田逆冲推覆构造区工程地质和煤矿的建设和开采具有一定的意义。

     

    Abstract: During the construction and layout of mines, it is inevitable to arrange them in areas with high rock damage such as structural zones.Reverse thrust structures, as a special type of structure, have certain complexity and superimposed destructive effects on rocks.This study aims to investigate the degree of rock damage caused by the reverse thrust fault in the Panxian Coalfield.Taking the reverse thrust fault in Luchu Village of Xiangshui Town, on the southern boundary of the Panxian Coalfield as an example, rock physical and mechanical properties experiments were conducted on the upper and lower walls of the reverse thrust fault in the thrust structure, as well as rocks in the same sedimentary environment and layer that were not damaged by the fault.Further analysis was conducted in conjunction with the reverse thrust structure.We summarized several regularities of rock damage caused by reverse thrust faults in order to serve mining technology, especially related fields such as mine support.

     

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