摘要
高阳煤矿回采巷道过断层期间,原支护方案支护参数过于保守,支护形式有待优化。通过理论计算,对原支护方案进行了优化设计,并通过数值模拟对巷道围岩的垂直位移、水平位移及塑性屈服区范围进行了计算,结果显示与原方案相比,优化方案的垂直位移、水平位移变化很小,均处于安全范围内,且优化方案对巷道围岩塑性屈服区范围控制效果较好。由此可见,优化支护方案在保证巷道安全稳定的前提下,可节约支护成本,提高掘进效率。
When the mining roadway passes through the fault in Gaoyang coal mine,the supporting parameters of the original support plan are too conservative,and the supporting form needs to be optimized.Through the theoretical calculation of the original support scheme is optimized design,and through the numerical simulation of the vertical displacement of surrounding rock of roadway,horizontal displacement and the plastic yield zone was calculated,the results show that compared with the original plan,the optimized scheme of vertical displacement and horizontal displacement change is very small,are in a safe range,and the optimization solution to the plastic yield area of roadway surrounding rock range control effect is better.It can be seen that optimization of support scheme can save support cost and improve tunneling efficiency on the premise of ensuring safety and stability of roadway.
作者
单忠豪
李兆龙
刘哲
Shan Zhonghao;Li Zhaolong;Liu Zhe(School of Mechanics and Civil Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China)
出处
《山西建筑》
2021年第5期85-87,92,共4页
Shanxi Architecture
关键词
煤矿巷道
断层构造
支护优化
数值模拟
coal mine roadway
fault structure
support optimization
numerical simulation
