摘要
潘三矿西翼-810 m胶带机大巷受上下采空区的影响,其所处的工程条件复杂,巷道支护困难。通过建立理论模型,对巷道围岩力学状态进行分析,得出围岩应力和损伤破裂半径的表达式,分析了在上下采空区的影响下,岩体卸压扰动和强度劣化对塑性损伤区及松动破裂区半径的影响。
The west section of- 810 m belt conveyor roadway in Pansan Coal Mine is under the influence of upper and below goaf,and the engineering condition is so complex that the roadway support is difficult. Therefore,theoretical model was established to analyze the stress state,and stress expression of roadway surrounding rock and its damage and fracture radius was reduced. The effect of rock mass unloading pressure disturbance and strength deterioration on the radius of plastic damage zone and loosening cracked zone was analyzed with considering the influence of upper and lower goaf.
出处
《煤矿安全》
CAS
北大核心
2015年第1期194-197,共4页
Safety in Coal Mines
关键词
上下采空区
巷道围岩
损伤破裂
支护技术
弹塑性
upper and lower goaf
roadway surrounding rock
damage and fracture
support technology
elastic-plastic
