松软破碎围岩巷道变形机理及非对称控制  

Deformation Mechanism and Asymmetrical Control of Roadway with Soft and Broken Surrounding Rock

作　　者：于洋[1] 陈勇[2] 梁化强[1] YU Yang;CHEN Yong;LIANG Huaqiang(School of Civil Engineering,Xuzhou Institute of Technology,Xuzhou 221018,China;State Key Laboratory of Coal Resources & Safe Mining,China University of Mining & Technology,Xuzhou 221115,China)

机构地区：[1]徐州工程学院土木工程学院,江苏徐州221018 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《煤矿安全》2018年第12期50-54,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51504246);全国建筑材料行业科技创新计划资助项目(2016-Z-9);徐州工程学院校级科研资助项目(XKY2016227)

摘　　要：以红岭煤矿15141综放工作面回采巷道为研究背景,综合采用现场调研、理论计算、数值模拟和工业性试验等手段,研究了采动应力作用下松软破碎围岩应力分布规律,据此确定了合理的护巷煤柱宽度,并揭示了松软破碎围岩巷道应力演化规律及变形机理;针对性地提出了松软破碎围岩巷道非对称控制技术。现场试验表明:留设窄煤柱护巷并采用高阻力、高预应力、非对称耦合支护与高水速凝材料注浆加固技术相结合,可以有效控制采动应力影响下松软破碎围岩巷道变形,保障巷道在服务期间的围岩稳定。Taking the mining roadway of Hongling Coal Mine 15141 fully mechanized caving face as the research background,combined with field survey, theoretical analysis, numerical calculation and field test, the stress of soft broken surrounding rock stress distribution law of mining roadway is studied, the reasonable width of protective pillar is determined, the evolution laws and stability mechanism of stress and strain of soft broken surrounding rock are revealed; on this basis, the asymmetric control technology of soft broken surrounding rock roadway is proposed. Field application shows that: setting up narrow coal pillar support and the use of high resistance, high prestress and asymmetric coupling support with high water quick setting grouting material technology, the dynamic pressure under the influence of soft rock roadway deformation can be effectively controlled, the stability of surrounding rock can be guaranteed during the service period.

关 键 词：松软破碎围岩 动压巷道 非对称支护 注浆加固 围岩控制 

分 类 号：TD322[矿业工程—矿井建设]