五阳煤矿3煤层底板突水危险性评价

为了对五阳煤矿3煤层底板进行突水危险性评价，保障五阳煤矿在承压水威胁条件下进行安全开采，在详细分析五阳煤矿水文地质条件和矿井揭露特征的基础上，从主要含水层、隔水层、水压、地质构造及采掘活动等方面对五阳煤矿3煤层底板突水危险性进行评价，通过在突水系数中考虑隔水层岩性—结构特征和开采活动的影响，建立了3 煤层底板突水危险性评价体系。研究表明，五阳煤矿3煤层底板奥陶纪灰岩岩溶水突水危险性极大，随着开采深度的增加，底板受采动影响破裂越严重，发生突水的危险性进一步增加。

Risk Evaluation on Floor Water Inrush of No.3 Coal Seam in Wuyang Coal Mine

To estimate No.3 coal seam floor water inrush risk evaluation of Wuyang Coal Mine，insuring the safe production of Wuyang Coal Mine under the threaten of piestic water，based on analysing detailedly hydrogeological conditions and mine exposure characteristics in Wuyang Coal Mine，the floor water inrush risk of No.3 coal seam was evaluated from several aspects，including the main aquifer，water-resisting layer，water pressure，geological structure and mining activities. By taking the texture characteristics and lithological characteristics of water-resisting layer into account，eventually，the evaluation system of No.3 coal seam floor water inrush risk in Wuyang Coal Mine was established. Studies have shown that，the risk of No.3 coal seam floor water inrush of ordovician limestone karst water in Wuyang Coal Mine is serious. With the increase of mining depth，mining activities have an influence on the coal seam floor，and then the risk of water inrush will increase.