轩岗矿区刘家梁煤矿5号煤层带压开采突水危险性分析评价与防治

摘要

To ensure coalmine safe mining have analytically assessed the threat level from the Ordovician limestone aquifer on the mining of coal No.5 in the Liujialiang coalmine,Xuangang mining area.Based on previous related geological and hydrogeological data,and Liujialiang coalmine coal No.5 floor mining under safe water pressure of aquifer hydrogeological condition,comprehensively analyzed coal floor Ordovician limestone aquifer water yield property,aquifuge lithological association features,and mining-induced floor failure depth.Through coal floor failure depth estimation and analysis,coal No.5 floor water bursting coefficient estimation assessment method have comprehensively assessed the floor Ordovician limestone water bursting hazard during coal mining.The result has shown that under the complete floor condition,coal No.5 could be safely extracted;meanwhile,water control technical measures have been put forward for coal mining under safe water pressure of aquifer.%为了分析评价奥灰含水层对轩岗矿区刘家梁煤矿5号煤层开采威胁程度,确保矿井安全开采,根据矿井以往相关地质及水文地质资料,本文以刘家梁煤矿5号煤层底板带压开采水文地质条件为基础,通过对煤层底板奥灰含水层的富水性、隔水层的岩性组合特征、底板采动破坏深度等综合分析,利用煤层底板采动破坏深度计算分析和5号煤层底板突水系数计算等评价方法,对煤层开采发生底板奥灰突水的危险性进行了综合分析评价,得出了在完整底板情况下5号煤层可以安全回采,同时还提出了煤层带压开采的防治水技术措施.