梅花井煤矿232201工作面顶板水疏放效果评价研究  

Evaluation and Study on the Water Drainage Effect of Roof in the 232201 Working Face of Meihuajing Coal Mine

作　　者：孙昊 赵宝峰 赵子敬 Sun Hao;Zhao Baofeng;Zhao Zijing(National Energy Group Ningxia Coal Industry Co.,Ltd.,Ningxia Yinchuan 750011;China Coal Science and Engineering Xi'an Research Institute(Group)Co.,Ltd.,Shaanxi Xi'an 710054;Key Laboratory of Coal Mine Water Hazard Prevention and Control Technology in Shaanxi Province,Shaanxi Xi'an 710177)

机构地区：[1]国家能源集团宁夏煤业有限责任公司,宁夏银川750011 [2]中煤科工西安研究院(集团)有限公司,陕西西安710054 [3]陕西省煤矿水害防治技术重点实验室,陕西西安710177

出　　处：《山东煤炭科技》2024年第9期117-122,共6页Shandong Coal Science and Technology

基　　金：陕西省自然科学基础研究计划(2023-JC-ZD-27)。

摘　　要：针对梅花井煤矿232201工作面面临的顶板砂岩水害问题,在工作面回采前开展了一系列防治水工作,通过探查顶板含水层并进行疏放水工程,对钻孔疏放水量进行观测。疏放水工程完成后,分析钻场水量的衰减率与稳定情况,结合工作面涌水量静储量和动态补给量预测值,对顶板水疏放效果进行了评价。结果表明:从钻孔、钻场水量变化来看,绝大多数钻孔衰减率达到100%,水量趋于稳定,顶板疏放水钻孔疏放水量大于静储量,疏放水效果良好。通过结合大井法预测的工作面涌水量以及钻孔疏放水的实际观测数据,对煤层顶部砂岩含水层的疏放水效果进行评价,该方法适用于类似工作面采前的水文地质条件评价中,对矿井的水害防治和水资源管理提供了重要的实践指导。Aiming at the problem of roof sandstone water hazard faced by the 232201 working face in Meihuajing Coal Mine,a series of water prevention and control works are carried out before the stoping of the working face.By exploring the roof aquifer and carrying out water drainage engineering,the amount of water drained from the boreholes is observed.After the completion of the water drainage project,the attenuation rate and stable situation of the water volume in the drilling site are analyzed,and the effect of roof water drainage is evaluated combined with the static reserves of working face water inflow and predicted value of dynamic supply quantity.The results show that from the perspective of water volume changes in boreholes and drilling sites,the attenuation rate of most boreholes reaches 100%,and the water volume tends to stabilize.The water drainage volume of the roof water drainage drilling holes is greater than the static reserves,and the water drainage effect is good.By combining the predicted water inflow of the working face using the large well method with the actual observation data of drilling hole water drainage,the water drainage effect of the sandstone aquifer at the top of the coal seam is evaluated.This method is suitable for evaluating the hydrogeological conditions of similar working faces before mining,and provides important practical guidance for water hazard prevention and control and water resource management in mines.

关 键 词：顶板含水层 疏放水 衰减率 稳定情况 静储量 动态补给量 

分 类 号：TD745[矿业工程—矿井通风与安全]