摘要
针对宁夏银星一号煤矿存在的侏罗系煤层顶板砂岩水害问题,在梳理矿井地质及水文地质条件的基础上,分析了侏罗系煤层顶板砂岩沉积环境与富水性的直接关系,评价了砂岩含水层的富水性;在研究煤层顶板岩层力学性质、矿物成分、水稳性特征以及导水裂隙发育规律的基础上分析了侏罗系煤层顶板砂岩水害机理及特征;提出了综合运用“探、疏、排、截、监”多种措施;以基础性探查工作为前提,重点运用疏水降压技术进行水害治理的思路。110301工作面水害治理效果表明通过疏水降压治理侏罗系煤层顶板砂岩水害是可行的。
To solve the water hazard problem of Jurassic coal seam roof sandstone in Yinxing No.1 Coal Mine of Ningxia Province,the direct relationship between the sedimentary environment of Jurassic coal seam roof sandstone and water abundance was analyzed and the water abundance of sandstone aquifer was evaluated on the basis of combing the geological and hydro-geological conditions of the mine.The mechanism and characteristics of water disaster in Jurassic coal seam roof sandstone were analyzed based on the study of the mechanical properties,mineral composition,water stability characteristics and water-conducting fracture development law of coal seam roof strata.In this paper,we propose the idea of comprehensively applying various measures of“exploration,drainage,discharge,interception and monitoring”,and focusing on the basic exploration work,using hydrophobic and depressurizing technology to control water damage.The water damage control effect of 110301 working face show that it was feasible to control the sandstone water damage on the roof of Jurassic coal seam through hydrophobic depressurization.
作者
赵世军
鹿存金
边凯
刘保杰
ZHAO Shijun;LU Cunjin;BIAN Kai;LIU Baojie(Yinxing No.1 Coal Mine,Ningxia Yinxing Coal Industry Co.,Ltd.,Yinchuan 750000,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China;School of Earth Science and Engineering,Hebei Engineering University,Handan 056000,China)
出处
《煤矿安全》
CAS
北大核心
2022年第12期76-84,共9页
Safety in Coal Mines
基金
国家自然科学基金资助项目(41902254)
河北省自然科学基金生态智慧矿山联合基金资助项目(D2020402013)。
关键词
矿井水害
侏罗系煤层
顶板砂岩
水害特征
水害防治
mining water hazard
Jurassic coal seam
roof sandstone
water damage characteristic
water hazard prevention
