高承压含水层突水灾害双层孔治理关键技术  

Key control technology of double-layer holes for high confined aquifer outburst

作　　者：吴燕军 WU Yanjun(China Coal Technology and Engineering Group Xi’an Research Institute(Group)Co.,Ltd.,Xi’an 710054,China;Shaanxi Key Laboratory of Preventing and Controlling Coal Mine Water Hazard,Xi’an 710177,China)

机构地区：[1]中煤科工西安研究院(集团)有限公司,陕西西安710054 [2]陕西省煤矿水害防治技术重点实验室,陕西西安710077

出　　处：《煤炭工程》2024年第8期86-92,共7页Coal Engineering

基　　金：国家重点研发计划项目(2017YFC0804102)。

摘　　要：针对采煤工作面底板奥灰含水层难以形成高水压堵水塞的技术难题,以古城煤矿3315工作面奥灰突水灾害治理工程为例,提出了地面双层定向水平孔治理方法,利用上层孔对高承压动水进行减速减压,下层孔对动水通道进行快速截流。同时根据工程实践,研究了高承压突水双层治理孔布孔原则、骨料灌注方法、注浆方式和注浆结束标准,形成了双层孔突水灾害治理关键技术。结果表明,双层定向孔对快速探查突水通道、构建堵水塞效果明显,堵水率达100%。To solve the difficulty of setting up high pressure plungers at Ordovician limestone aquifer on the floor of coal mining face,we take No.3315 working face of Gucheng Coal Mine as an example.We put forward a treatment method of surface double-layer directional horizontal holes.The upper holes are used to slow down and reduce the high pressure moving water,and the lower holes are used to quickly intercept the moving water flow.According to the engineering practice,hole distribution,aggregate filling method,grouting method,and grouting completion standards for high pressure water inrush double-layer holes are studied,which defines the key technology of double-layer water inrush disaster treatment.The results show that the double-layer directional hole has an obvious effect on rapid exploration of water inrush channel and construction of water plug,and the water plug rate is 100%.

关 键 词：高承压 双层定向分支孔 减速堵水 骨料灌注 

分 类 号：TD745[矿业工程—矿井通风与安全]