高应力大巷底鼓机理及其稳定性控制方法  

Mechanism of floor heave in high stress roadway and its stability control method

作　　者：常庆灵 CHANG Qingling(Yuwu Coal Industry Co.,LTD.,Shanxi Lu'an Group,Changzhi 046100,China)

机构地区：[1]山西潞安集团余吾煤业有限责任公司,山西长治046100

出　　处：《煤矿现代化》2025年第1期129-134,共6页Coal Mine Modernization

摘　　要：针对余吾煤业1号回风大巷在高应力扰动下出现的巷道底鼓严重问题,综合运用理论分析、数值计算和现场试验相结合的方法,系统研究了高应力大巷底鼓机理及其稳定性控制方法。理论计算结果表明,高应力巷道底板破坏深度达1.35 m,底板滑移面受到的滑动力达3.11 MPa,超过了底板砂质泥岩极限抗拉强度,导致巷道底板发生底鼓。从高应力巷道底鼓控制角度出发,提出了高应力巷道顶底板加强锚索与巷道两帮锚杆联合支护的巷道底鼓控制技术,数值模拟结果表明巷道底鼓量可降低67%,有效控制底鼓的同时,也可为巷道整体稳定提供支撑。通过现场试验,研究提出的巷道底鼓控制方法可使回风大巷顶板下沉值降低37%,底鼓值降低72%,两帮变形量降低53%,有效保证了回风大巷的稳定。研究结果对于指导深部矿井高应力环境下巷道底鼓控制具有重要实践意义。In view of the serious problem of floor heave in the No.1 return air main roadway of Yuwu Coal Industry under the disturbance of high stress,the mechanism of floor heave and its stability control method were systematically studied by combining theoretical analysis,numerical calculation and field test.The theoretical calculation results show that the failure depth of high-stress roadway floor reaches 1.35m,and the sliding force on the sliding surface of the floor reaches 3.11MPa,which exceeds the ultimate tensile strength of sandy mudstone and leads to floor heave.From the perspective of floor heave control in high-stress roadway,a floor heave control technology is proposed,in which the combined support of the roof and floor reinforced anchor cable and the two sides of the roadway are combined.The numerical simulation results show that the floor heave volume of the roadway can be reduced by 67%,which can effectively control the floor heave and provide support for the overall stability of the roadway.Through the field test,the proposed floor heave control method can reduce the roof subsidence value of the return air main roadway by 37%,the floor heave value by 72%,and the deformation of the two sides by 53%,which effectively ensures the stability of the return air main roadway.The research results have important practical significance for guiding the control of roadway floor heave under high stress environment in deep mine.

关 键 词：高应力巷道 围岩变形 底鼓 稳定性 支护 

分 类 号：TD327.3[矿业工程—矿井建设]