摘要
根据巷道变形及围岩变形情况,从改变锚杆长度、锚杆的安装角度、锚杆安装密度和加强各支护材料等方面对支护结构进行了合理的优化,并提出了三种可行性支护方案。经过建立数值模型,对工作面距掘进巷道70 m、40 m、0 m、-40 m、-80 m五个位置处的位移量进行模拟,结果表明,三个方案对巷道顶板的控制效果相差不大,而方案一对巷帮的控制效果明显优于方案二和方案三,因此是最佳支护方案。
According to the situation of deformation and deformation of surrounding rock of roadway,from changing the installation angle,anchor length,anchor rod anchor density and strengthening the supporting materials to the reasonable supporting structure optimization,and put forward the feasibility of three kinds of support scheme.Through numerical model is established,on the roadway drivage working face of 70 m and 40 m,0 m to 40 m,-80 m five location,to simulate the displacement results show that the three schemes of roadway roof control effect were similar,and plan a lane to help control effect is better than two and three,so is the best supporting scheme.
作者
郭亚楠
GUO Yanan(Lvlin Energy Chemical Industry,Huozhou Coal Group,Shanxi Coking,Linxian 033200,China)
出处
《煤》
2018年第4期15-19,38,共6页
Coal
关键词
沿空动压
巷道支护
数值模拟
along the air pressure
roadway support
numerical simulation
