受采动影响弱胶结软岩临近巷道底鼓机理及控制研究  

Research on Mechanism and Control of Floor Heave in Adjacent Roadway of Weakly Cemented Soft Rock Affected by Mining

作　　者：马成甫 张涛 赵鑫 于凤海[2] 王博 计鹏举 杨学瑞 MA Chengfu;ZHANG Tao;ZHAO Xin;YU Fenghai;WANG Bo;JI Pengju;YANG Xuerui(Ordos City Haohua Hongqingliang Mining Co.,Ltd.,Ordos 017000,China;School of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]鄂尔多斯市昊华红庆梁矿业有限公司,内蒙古鄂尔多斯017000 [2]山东科技大学能源与矿业工程学院,山东青岛266590

出　　处：《煤炭技术》2023年第3期64-68,共5页Coal Technology

摘　　要：西部矿区双巷掘进模式下弱胶结软岩临近巷道受采动影响时底鼓严重,直接造成巷道无法预留作为下一工作面的巷道正常使用。针对此情况,采用现场调研、理论分析与数值模拟相结合的研究方法,探究临近巷道受采动影响底鼓变形演化规律,揭示底鼓发生机理,提出该类巷道底鼓控制策略与控制方案,并进行现场应用实践。研究结果表明:基于现场调研分析,获取了程度大、非对称的阶段性底鼓特征;通过理论分析,获取了采动影响下两帮不同侧向支承压力作用产生底板两侧不同破坏深度的底鼓机理;结合底鼓特征及机理提出了“底板中部切槽+帮部卸压孔”的底鼓治理技术,通过数值模拟确定施工参数并进行现场试验,表明该技术底鼓量可减小约80%,有效控制了采动影响下弱胶结软岩临近巷道底板变形。Under the double roadway driving mode in western mining area, the floor heave is serious when the weak cemented soft rock adjacent roadway is affected by mining, which directly causes that the roadway cannot be reserved as the next working face. In view of this situation, it adopts the research method of field investigation, theoretical analysis and numerical simulation to explore the deformation evolution law of floor heave affected by mining in adjacent roadway, reveal the mechanism of floor heave, put forward the control strategy and control scheme of floor heave in this kind of roadway, and carry out field application practice. The results show that: based on the field investigation and analysis, the stage floor heave characteristics with large degree and asymmetry are obtained;through theoretical analysis, the floor heave mechanism of different failure depths on both sides of the floor under different lateral abutment pressures of the two sides under the influence of mining is obtained;combined with the characteristics and mechanism of floor heave, the floor heave control technology of middle floor cutting groove side pressure relief hole is proposed. The construction parameters are determined by numerical simulation and the field test is carried out. The results show that the amount of floor heave can be reduced by about 80%, which effectively controls the deformation of roadway floor near weak cemented soft rock under mining influence.

关 键 词：弱胶结软岩 采动 临近巷道 底鼓机理 控制 

分 类 号：TD353[矿业工程—矿井建设]