断层突水防治工程实践分析

Practice analysis on the prevention and control of water inrush from fault

文中首先分析了临近CF7含水断层的围岩水文地质情况,确定了9301工作面沿断层布置,设置保护煤柱的采煤工作面布置。为了确定临近CF7含水断层的保护煤柱合理尺寸,文中根据实际情况,建立了数值计算模型,根据水压与岩层阻水能力计算,CF7断层防水保护煤柱留设58.4m宽度的煤柱,以确保采区安全回采。

in this paper,we first analyzed the hydrogeological condition of surrounding rock near the CF7 water cut fault,and determined the layout of the 9301 working face along the fault and set the protective coal pillar for the coal face.In order to determine the reasonable size of the protective coal pillar near the CF7 water cut fault,according to the actual situation,a numerical calculation model is established.According to the calculation of water pressure and water resistance ability of the rock stratum,the CF7 fault waterproof protection coal pillar is left with 58.4m width coal pillar to ensure the safe mining in the mining area.