上覆回采工作面对水平巷道变形破坏特征及控制技术研究  

Study on failure characteristics and control technology of overlying mining working face in horizontal roadway

作　　者：刘怀付 Liu Huaifu(State Key Laboratory of Coal Mine Disaster Prevention and Control,Chongqing 400037,China;CCTEG Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]煤矿灾害防控全国重点实验室,重庆400037 [2]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《能源与环保》2025年第3期251-257,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：区域创新发展联合基金重点项目(U21A20110);重庆市社会事业与民生保障科技创新专项项目(cstc2022ycjh-bgzxm0220)。

摘　　要：针对强采动巷道围岩大变形破坏的控制难题,以张双楼煤矿-500 m水平巷为工程背景,采用钻孔窥视、实验室试验、数值模拟和现场工业性试验等研究方法,分析了强采动巷道围岩内部裂隙发育特征和围岩力学特性,研究了上覆工作面回采对-500 m水平巷围岩应力和塑性区的影响规律,结合现场实际提出了以“深浅耦合注浆”为核心的锚网索喷注联合支护方式。结果表明,受上覆工作面强采动影响,-500 m水平巷围岩内部裂隙发育、松动破坏严重;当工作面端头距巷道水平距离为10 m时,由于受超前支承压力的剧烈影响,巷道垂直应力和塑性区半径大幅增加,最大破坏深度超过5 m。现场试验表明,试验巷道采用锚网索喷注强化支护技术后,巷道围岩变形得到有效控制,为类似条件下巷道支护工程提供了参考。Aiming at the control problems of large deformation and failure of surrounding rock in strong mining roadway,the roadway at-500 m level in Zhangshuanglou Coal Mine was taken as the object,research methods such as drilling observation,laboratory testing,numerical simulation,and on-site industrial testing were used in this study,the internal crack development characteristics and mechanical characteristics of the surrounding rock of the strong mining roadway were analyzed,the influence of overlying working face mining on the stress and plastic zone of the surrounding rock of the roadway at-500 m level was studied.Combining with the actual situation on-site,a combined supporting method was proposed through bolting,metal net,cable,and grouting with"deep-shallow coupling grouting"as the main method.Results showed that affected by the strong mining of the overlying working face,the internal cracks in the surrounding rock of the roadway at-500 m level were developed and severely damaged.When the horizontal distance between the end of the working face and the roadway was 10 meters,due to the severe influence of advance abutment pressure,the vertical stress and plastic zone radius of the roadway significantly increased,and the maximum failure depth exceeded 5 meters.On-site experiments show that the use of reinforcement supporting technology through bolting,metal net,cable,and grouting in the experimental roadway effectively controls the deformation of the surrounding rock,providing a reference for roadway supporting engineering under similar conditions.

关 键 词：强采动巷道 破坏特征 超前支承压力 围岩控制 深浅耦合注浆 

分 类 号：TD353[矿业工程—矿井建设]