东曲煤矿28806工作面顶板突水危险性研究  

Study on roof water outburst risk of No.28806Face in Dongqu Coal Mine

作　　者：蔡骥 Cai Ji(Xishan Coal and Electricity(Group)Co.,Ltd.,Taiyuan 030001,China)

机构地区：[1]西山煤电(集团)有限责任公司,山西太原030001

出　　处：《煤炭与化工》2024年第11期61-65,共5页Coal and Chemical Industry

摘　　要：煤层顶板突水是矿井常见的水害事故之一。为了研究东曲煤矿28806工作面的突水危险性,通过地质与水文地质条件分析,向采空区实施探查钻孔做压水试验,并结合瞬变电磁探查,确定了8号煤层顶板L1灰岩、K2灰岩、L4灰岩含水层水为主要影响水源,以及顶板导水裂隙带发育高度,表明2号和4号煤层的采空区积水对28806工作面影响较小,K2灰岩和L4灰岩含水层富水性较弱,工作面无突水危险性,为8号煤层的安全开采提供了参考。Water outburst from coal seam roof is one of the common water disasters in mines.In order to study the water outburst risk of No.28806 Face in Dongqu Coal Mine,through the analysis of geological and hydrogeological conditions,the water pressure test was carried out by exploration drilling holes in the goaf.And combined with transient electromagnetic exploration,it was determined that the aquifer water of L1 limestone,K2 limestone and L4 limestone in the roof of No.8 coal seam was the main influencing water source,and the development height of roof water conduction fracture zone was determined.The results showed that the goaf water of No.2 and No.4 coal seams had little influence on No.28806 Face,the water abundance of K2 limestone and L4 limestone aquifer was weak,and there was no water outburst risk in the working face,which provided a reference for the safe mining of No.8 coal seam.

关 键 词：煤层顶板 突水 导水裂隙带 瞬变电磁 

分 类 号：TD74[矿业工程—矿井通风与安全]