蒙陕矿区大储量采空区水害综合防治技术创新与实践  

Innovation and practice of comprehensive prevention and control technology for water disaster in goaf with large reserves of water in Mengshan mining area

作　　者：王小勇 WANG Xiaoyong(Wushen Mengda Mining Co.,Ltd.,Ordos,Inner Mongolia 017307,China)

机构地区：[1]乌审旗蒙大矿业有限责任公司,内蒙古自治区鄂尔多斯市017307

出　　处：《中国煤炭》2021年第8期22-27,共6页China Coal

基　　金：“十二五”国家科技支撑计划项目(2012BAB13B02)。

摘　　要：纳林河二号矿井31121采空区积水具有储量大、动态补给量大等特点,为了防治31121采空区水害,保障相邻31120工作面回风巷安全掘进,将31121采空区积水分成整体疏放积水区与局部疏放积水区,利用泄水巷布置钻孔、辅回撤通道密闭墙导水管、工作面回风巷硐室密闭墙导水管、回风巷布置钻孔等方法,通过采取分区管理、预测预报、多点疏放、低位布孔、持续畅通、先整体后局部、先观测后分析、先疏放后掘进、效果评价等综合防治技术,成功消除了31121采空区积水的威胁,仅用41 d成功疏放31121采空区积水32.3万m 3,将整体水位降至局部水位以下且局部水位降至1 m以下,保障了31120工作面回风巷掘进安全。The 31121 goaf of Nalinhe No.2 Mine had large reserves of water with large dynamic recharge capacity,in order to prevent and control the water disaster in 31121 goaf and ensure the safe driving of return air roadway of adjacent 31120 working face,the ponding in 31121 goaf was divided into overall ponding drainage area and local ponding drainage area.By using measures such as boreholes arrangement with drainage roadway,closed wall water guide pipes of auxiliary withdrawal channel,closed wall water guide pipes of return air roadway chamber,boreholes arrangement in return air roadway,and by adopting comprehensive prevention and control technologies such as zoning management,prediction,multi-point drainage,low-level hole layout,continuous unblocking,overall before local drainage,observation before analysis,drainage before driving and effect evaluation,the threat of ponding in 31121 goaf had been successfully eliminated,323000 m 3 of ponding in 31121 goaf was drained successfully in only 41 days,the overall water level was reduced below the local water level and the local water level was reduce below 1 m,which ensured the driving safety of return air roadway in 31120 working face.

关 键 词：采空区水害 沿空掘进 小煤柱 分区管理 多点疏放 蒙陕矿区 

分 类 号：TD745.2[矿业工程—矿井通风与安全]