吉宁煤矿奥灰水突水危险性分析

Risk analysis of Water inrush on ordovician limestone groundwater in jining coal mine

为了保障煤矿安全生产,分析研究井田奥灰水水文地质条件及峰峰组上部岩层隔水性能,对评价带压开采意义重大。本文以河东煤田南部吉宁井田奥灰水文地质勘探工程为基础,依托奥灰水文补充勘探成果资料,分析了井田10号煤层底板奥陶系灰岩水突水影响因素,预测奥灰突水量,并评价了奥灰水突水危险性。经勘探工程评价后,解放了受奥灰水威胁的10号煤层资源量2811万吨,对煤炭资源开发利用有重要意义。

In order to ensure the safe production of coal mines,the analysis and research on the hydro-geological conditions of the ash water in the well field and the water barrier performance of the upper rock layers of the Fengfeng Formation are of great significance for the evaluation of pressured mining.Based on the Austrian ash hydrogeological exploration project in the Jining Minefield in the south of the Hedong Coalfield,this paper analyzes the influence factors of Ordovician limestone water inrush from the floor of No.10 coal seam,and predicts the amount of ash ash outburst.The risk of water inrush from Austrian grey water was evaluated.After the evaluation of the exploration project,the resources of No.10 coal seam threatened by Austrian gray water were 28.11 million tons,which is of great significance to the development and utilization of coal resources.