摘要
小回沟煤矿9号煤层为大部分地段奥陶系灰岩带压开采煤层。本文通过分析矿井地质条件、构造规模、奥陶系灰岩含隔水层特征、奥陶系岩溶水化学特征、含水层间水力联系和充水条件等,初步查明了9号煤层奥灰水文地质条件,采用突水系数法对井田内9号煤层在带压范围内的突水危险性进行评价,为9号煤层的安全开采提供有效理论依据。
No.9 coal seam in Xiaohuigou Coal Mine is the coal seam mined by Ordovician limestone under pressure in most sections.In this paper,by analyzing the geological conditions,structural scale,water-resisting layer characteristics of Ordovician limestone,chemical characteristics of Ordovician karst water,hydraulic connection between aquifers and water filling conditions,etc.,the hydrogeological conditions of Ordovician limestone in No.9 coal seam are preliminarily identified,and the water inrush risk of No.9 coal seam in the mining field is evaluated by using the water inrush coefficient method,which provides an effective theoretical basis for the safe mining of No.9 coal seam.
作者
王瑛
Wang Ying(No.1 Hydrogeology Team of China Coal Geology Bureau,Handan,056004)
出处
《西部资源》
2021年第1期124-125,128,共3页
Western Resources
关键词
带压开采
水力联系
突水系数
突水危险性
water inrush risk of hydraulic connection
water inrush
coefficient in mining
under pressure
