黄泥岩顶板导水裂隙带发育规律与防治水技术  

Development Law and Water Control Technology of Water-conducting Fissure Zone in Yellow Mudstone Roof

作　　者：魏启俊 WEI Qijun(Yicheng Shiqiu Coal Industry Co.,Ltd.,Yangquan Coal Industry Group)

机构地区：[1]阳泉煤业集团翼城石丘煤业有限公司

出　　处：《现代矿业》2023年第10期96-99,共4页Modern Mining

摘　　要：为解决石丘煤业黄泥岩顶板涌水问题,在工作面布置调查钻孔进行钻孔水位与钻孔漏失量分析,并结合数值模拟方法进行验证。结果表明:钻孔探测的导水裂隙带发育的顶点为143.89 m与147.12 m,工作面回采初次来压步距为90 m。当工作面推进300 m时,采空区中部的部分裂隙压实闭合,两侧裂隙带发育至地表;当发生覆岩涌水时,由于黄泥岩层的水化运移特性,导水通道主要为采空区两侧裂隙。裂隙带高度约159 m,是采高的26.50倍;冒落带高度为30 m,是采高的5倍;弯曲下沉带高度为110 m。根据研究结果,提出了“探测+疏水+注浆”的综合防治技术体系以及黄泥岩层涌水的判别方法。In order to solve the problem of water inrush from yellow mudstone roof in Shiqiu Coal Industry,the investigation boreholes were arranged in the working face to analyze the borehole water level and borehole leakage,and the numerical simulation method was used for verification.The results show that the vertices of the water-conducting fracture zone detected by the borehole are 143.89 m and 147.12 m.The first weighting interval of the working face is 90 m.When the working face advances 300 m,part of the fissures in the middle of the goaf are compacted and closed,and the fissure zones on both sides are developed to the surface.When the overlying rock gushing water occurs,due to the hydration and migration characteristics of the yellow mudstone layer,the water-conducting channel is mainly the cracks on both sides of the goaf.The height of the fracture zone is about 159 m,which is 26.50 times of the mining height.The height of the caving zone is 30 m,which is 5 times of the mining height.The height of the curved subsidence zone is 110 m.According to the research results,the comprehensive prevention and control technology system of 'detection+ hydrophobic + grouting' and the discrimination method of water gushing in yellow mudstone layer are put forward.

关 键 词：黄泥岩 导水裂隙带 钻孔探测 数值模拟 

分 类 号：TD745[矿业工程—矿井通风与安全]