基于薄板理论的覆岩导水裂隙带高度研究  

Research on height of water conducted zones in overlying rock based on thin plate theory

作　　者：胡威 高志强 HU Wei;GAO Zhiqiang(Huaibei Mining(Group)Co.,Ltd.,Huaibei 235000,China;School of Mining Engineering,China University of Miningand Technology,Xuzhou 221116,China)

机构地区：[1]淮北矿业(集团)有限责任公司,安徽淮北235000 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭科技》2024年第3期126-130,共5页Coal Science & Technology Magazine

基　　金：国家自然科学基金面上项目(52174138)。

摘　　要：导水裂隙带发育高度对于煤矿防治水工作具有重要意义。为了掌握孙疃煤矿Ⅱ1022工作面开采后煤层顶板垮落带和裂隙带发育范围、发育规模及其空间展布特征,确定垮落带、裂隙带与顶板含水层之间的关系,利用薄板理论与关键层理论对此进行理论分析,得到了关键层薄板挠度的表达式,预计导水裂隙带的发育高度为55.48 m,同时通过井下仰孔注水漏失现场实测得到导水裂隙带高度为56.8~61.4 m,实测结果与理论预计导水裂隙带高度基本一致,验证了理论分析的合理性,为实际生产提供了理论指导。The development height of water conducted zones is of great significance for coal mine water prevention and control work.In order to grasp the development range,scale,and spatial distribution characteristics of the coal seam roof collapse zone and fracture zone after the mining of Suntuan Coal MineⅡ1022 working face,and to determine the relationship between the collapse zone,fracture zone,and roof aquifer,theoretical analysis was conducted using thin plate theory and key layer theory.The expression for the deflection of the key layer thin plate was obtained,and the expected development height of the water conducted zone was 55.48 meters.At the same time,the height of the water conducted zone was obtained through on-site measurement of water injection leakage in the underground upward hole,which was 56.8~61.4 meters.The measured results were basically consistent with the theoretical prediction of the height of the water conducted zone,verifying the rationality of the theoretical analysis and providing theoretical guidance for actual production.

关 键 词：导水裂隙带 关键层 薄板理论 矿井防治水 最大挠度 

分 类 号：TD745[矿业工程—矿井通风与安全]