采空区下回采巷道非对称变形研究  

Study on Asymmetric Deformation of Mining Gateway Under Mining Goaf

作　　者：孙小康[1,2] 王连国[1] 朱双双[1,2] 胡敏军[1,2] 张光辉[1,2] 

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 [2]中国矿业大学力学与建筑工程学院,江苏徐州221008

出　　处：《煤炭工程》2014年第3期72-75,共4页Coal Engineering

基　　金：国家自然科学基金资助项目(51274191);国家重点基础研究发展规划(973计划)资助项目(2010CB226805)

摘　　要：针对采空区下回采巷道变形破坏严重难以支护且具有明显非对称特征的现象,运用理论分析和数值模拟等方法,结合具体的工程实践,建立了区段煤柱力学模型,研究了煤柱支承压力作用下底板岩层应力分布规律,分析了10-1051巷道非对称受力和变形破坏特征,并对巷道支护结构进行了优化,有效控制了巷道的变形,为采空区下非对称变形巷道的支护提供了理论指导,对非对称变形巷道围岩控制具有重要的现实和理论指导意义。According to serious deformation failure and hard to support of the mining gateway under the mining goaf and the gateway with obvious asymmetric feature phenomenon, in combination with the certain engineering practices, a theoretical analysis and the numerical simulation method were applied to establish a mechanics model of the sectional coal pillar, to study the stress distribution law of the floor strata under the support pressure role of the coal pillar, to analyze the asymmetric stressed and the deformation failure features of No. 10 - 1051 gateway, to optimize the support structure of the gateway and to effectively control the deformation of the gateway. All mentioned could prove the theoretical guidance to the support of the asymmetric deformed gateway under the mining goaf and would have important practical and theoretical guidance significances to the surrounding rock control of the asymmetric deformed gateway.

关 键 词：区段煤柱 力学模型 应力分布 非对称变形 巷道支护 

分 类 号：TD353[矿业工程—矿井建设]