正益煤业地质构造对底板突水的影响

Influence of Geological Structure of Zhengyi Coal Mine on Water Inrush from Floor

针对严重威胁矿井安全生产的底板突水事故,通过分析,研究断层对煤层底板突水的影响。结合山西焦煤集团介休正益煤业有限公司11号煤层实际地质构造以及断层特征,研究待开采的11号煤层的地质构造对地板突水影响。首先分析11号煤层断层构造的影响类型,然后对断层防隔水煤柱留设宽度进行计算,并分析隐伏陷落柱的影响。最后利用大井法对11号煤层突水量进行预测,并对11号煤层突水危险性进行评价。

Aiming at the water inrush accident of the floor which seriously threatens the mine safety production,the influence of faults on the water inrush from the coal floor is studied through analysis.Based on the actual geological structure and fault characteristics of No.11 coal seam of Jiexiu Zhengyi Coal Industry Co.,Ltd.of Shanxi Coking Coal Group,this paper studies the influence of the geological structure of No.11 coal seam to be exploited on the floor water inrush,first analyzes the impact type of No.11 coal seam fault structure.Then calculate the width of the fault-proof water-proof coal pillar and analyze the influence of the hidden collapse column.Finally,the Dajing method was used to predict the water inrush of No.11 coal seam,and the risk of water inrush in No.11 coal seam was evaluated.