富水松散地层煤矿斜井井筒渗漏水治理技术  

Water leakage control technology of inclined shaft in loose strata coal mine with rich water

作　　者：石银斌 杨志斌 王海 李文平 惠磐科 吕文波 郭晓山 雷占 SHI Yinbin;YANG Zhibin;WANG Hai;LI Wenping;HUI Panke;LYU Wenbo;GUO Xiaoshan;LEI Zhan(Wuhai Energy Co.,Ltd.,China Energy Investment Corporation,Wuhai 016099,China;China Coal Technology and Engineering Group Xi'an Research Institute(Group)Co.,Ltd.,Xi'an 710077,China)

机构地区：[1]国家能源集团乌海能源有限责任公司,内蒙古乌海016099 [2]中煤科工西安研究院(集团)有限公司,陕西西安710077

出　　处：《煤矿安全》2023年第5期121-126,共6页Safety in Coal Mines

基　　金：国家重点研发计划资助项目(2019YFC1805400);中煤科工集团西安研究院有限公司科技创新基金资助项目(2020XAYJS03)。

摘　　要：为有效治理富水松散地层煤矿斜井井筒渗漏水问题,保护地下水资源,消除井筒的安全隐患,开展了富水松散层煤矿斜井渗漏水特征分析、井筒渗漏水治理及加固技术研究,并进行了示范应用。研究结果表明:我国西部矿区松散层厚、渗透系数大、富水性强,易出现井筒渗漏水现象,渗漏水位置大多位于井筒底板开裂处、底板与腰墙接茬处、拱部裂隙或孔隙;通过垂直钻孔或倾斜钻孔在斜井井筒四周构筑侧向截水帷幕,可将富水松散层的水与井筒隔离,切断二者的水力联系,减少井筒涌水、渗水量;壁后注浆可充分填充斜井井筒周围因涌水携砂而形成的空洞、空隙,使井筒周围岩土体处于稳定状态、井筒受力均匀。骆驼山煤矿副斜井井筒富水松散层渗漏段治理结果显示:斜井井筒旋喷桩侧向帷幕截水效率高、效果好,井筒涌水量由治理前的31.2 m3/h降低至1.75 m3/h,较治理前减少了94.39%,井筒周围的地下水位抬升,降落漏斗基本消失,旋喷桩帷幕与壁后注浆相结合的方法有效解决了富水松散层煤矿斜井井筒渗漏水问题。In order to effectively control the seepage and water leakage problem of inclined shaft of coal mine in water-rich loose strata,protect groundwater resources and eliminate the safety hazard of the shaft,the characteristics analysis of seepage and water leakage of inclined shaft of coal mine in water-rich loose strata,the research of shaft seepage and water leakage control and reinforcement technology were carried out,and the demonstration application was carried out.The results show that:the loose layer in the western mining area was thick.The permeability coefficient was large.The water rich was strong.And the phenomenon of shaft seepage and water leakage was easy to occur.The seepage and water leakage were mostly located at the crack of shaft bottom plate,the joint between the bottom plate and the waist wall,the crack or pore of the arch.Through vertical drilling or inclined drilling,the lateral cut-off curtain was built around the inclined shaft,which could isolate the water in the water-rich loose layer from the shaft.The lateral cut-off curtain could cut off the hydraulic connection between them,and reduce the water gushing and seepage of the shaft.The grouting behind the wall could fully fill the holes and voids formed by water gusher and sand carrying around the inclined shaft.So that the rock and soil bodies around the shaft were in a stable state and the shaft was under uniform force.The treatment results of the water-rich loose layer leakage section in the secondary inclined shaft of Tuotuoshan Coal Mine show that the lateral curtain of the jet grouting pile in the inclined shaft had high water cutting efficiency and good effect.The water inflow in the shaft decreased from 31.2 m3/h before treatment to 1.75 m3/h,which was 94.39%less than that before treatment.The groundwater level around the shaft rose and the falling funnel basically disappeared.The method of combination of jet pile curtain and grouting behind wall effectively could solve the problem of water leakage in inclined shaft of coal mine with

关 键 词：富水松散地层 斜井井筒 渗漏水 旋喷桩 壁后注浆 

分 类 号：TD742.2[矿业工程—矿井通风与安全]