里必煤矿高应力软岩巷道采动应力演化规律与围岩控制技术  

Mining dynamic stress evolution law and surrounding rock control technology of high stress soft rock roadway in Libi Coal Mine

作　　者：李良山 钱德雨[2] 黄森 陈海林 薛彪 柴纳川 LI Liangshan;QIAN Deyu;HUANG Sen;CHEN Hailin;XUE Biao;CHAI Nachuan(China Coal Huajin Group Jincheng Energy Co.,Ltd.,Jincheng 048200,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China;Hunan Shizhuyuan Nonferrous Metal Co.,Ltd.,Chenzhou 423037,China)

机构地区：[1]中煤华晋集团晋城能源有限公司,山西晋城048200 [2]中国矿业大学矿业工程学院,江苏徐州221116 [3]湖南柿竹园有色金属有限责任公司,湖南郴州423037

出　　处：《煤矿安全》2024年第12期171-179,共9页Safety in Coal Mines

基　　金：国家自然科学基金青年科学基金资助项目(51704277)。

摘　　要：针对深部高应力泥质软岩底板抽放巷受回采扰动影响的问题,以山西省里必煤矿深部泥质软岩底板抽放巷布置优化与围岩控制为研究对象,综合采用理论分析、数值计算和工业性试验等研究方法,揭示了岩石底板抽放巷围岩采动应力演化规律,优化了底板抽放巷布置方式。研究结果表明:当巷道与工作面外错大于15 m时,应力集中效应明显减弱,巷道围岩塑性区与工作面塑性区贯通区域大幅减少,顶底板与两帮位移量较小,有利于岩石底板抽放巷围岩稳定性维护。工业性试验的结果也进一步验证了深部泥质软岩岩石底板抽放巷的优化布置方式在实际工程中的有效性,采用这种优化后的布置方式,岩石底板抽放巷的维护效果良好,能够有效保障矿井的安全生产。In order to solve the problem of deep high stress argillaceous soft rock floor drainage roadway affected by mining disturbance,taking the layout optimization and surrounding rock control of deep argillaceous soft rock floor drainage roadway in Libi Coal Mine of Shanxi Province as the research object,comprehensive research methods such as theoretical analysis,numerical calculation and industrial test are adopted to reveal the mining stress evolution law of surrounding rock of rock floor drainage roadway,and optimize the layout of floor drainage roadway.The results show that when the external fault between roadway and working face is greater than 15 m,the stress concentration effect is obviously weakened,the passing area between the plastic zone of roadway and the plastic zone of working face is greatly reduced,and the displacement of roof and floor and two sides is small,which is conducive to the stability maintenance of the surrounding rock in the rock floor drainage roadway.The results of the industrial test also further verify the effectiveness of the optimized arrangement of the deep argillaceous soft rock floor drainage roadway in the actual project.With this optimized arrangement,the maintenance effect of the rock floor drainage roadway is good,and the safety production of the mine can be effectively guaranteed.

关 键 词：高应力 泥质软岩 岩石底板抽放巷 采动应力 围岩控制 

分 类 号：TD353[矿业工程—矿井建设]