采矿与安全工程学报Issue(1)：63-69,7.DOI:10.13545/j.cnki.jmse.2016.01.010
动力扰动下含软弱夹层巷道围岩稳定性数值分析
Numerical analysis of stability of roadway surrounding rock with weak interlayer under dynamic disturbance
摘要
Abstract
In order to study the influence of weak interlayer of different thickness a, position h and an-gleθon the stability of surrounding rock of roadway under dynamic disturbance, numerical analysis of the mechanical response of roadway surrounding rock with weak interlayer under the action of stope blasting has been carried out using the finite element software ABAQUS, and the optimization support scheme has been put forward combing the practical conditions of roadway of Dongguashan Copper Mine. The results have shown that in conditions of dynamic disturbance:1) Both the stress and dis-placement have a non-linear relation with interlayer thickness a or position h upon the roof and two sides of roadway;the stability of the surrounding rock declines at first with the increase of a/h and then shows an up-going trend, which has indicated relative changes of the influence of a or h on secondary static stress of surrounding rock and dynamic disturbance attenuation. 2) With the increase of interlayer angleθ, the attenuation of the layer to dynamic wave rises up and then becomes more obvious whenθgrows larger. 3) The weak interlayer as an important role on the stability of roadway surrounding rock of Dongguashan Copper Mine, support measures and technical parameters can effectively control the deformation of surrounding rock, which has verified above results.关键词
动力扰动/软弱夹层/力学响应/支护优化/数值模拟Key words
dynamic disturbance/weak interlayer/mechanical response/support optimization/numerical simulation分类
矿业与冶金引用本文复制引用
唐礼忠,高龙华,王春,蒋锋..动力扰动下含软弱夹层巷道围岩稳定性数值分析[J].采矿与安全工程学报,2016,(1):63-69,7.基金项目
国家重点基础研究发展计划(973)项目(2010CB732004) （973）
