煤矿巷道矸石充填技术参数的数值仿真优化

Numerical Simulation Optimization of Waste Filling Parameters in Mine Roadway

为解决煤矸石排放对生态环境造成的严重污染、占用耕地等问题,以及置换呆滞的煤炭资源,根据绿色开采理念,提出了煤矸置换理念。结合邢东矿的生产技术条件,在综合考虑煤柱稳定性、巷道变形、充填顺序的基础上,设计了不同充填工艺参数的仿真方案。数值计算结果表明:在巷道尺寸一定的情况下,煤柱宽度4.5 m、同时充填的巷道最小间隔为18 m时,巷道变形收敛值较小,回采率较高。矸石巷道充填技术的成功实施,置换了井下呆滞的煤炭资源,产生了较大的经济效益和环境效益。

In order to solve the problems of serious pollution of the ecological environment and the cultivated land occupation caused by the mining waste discharge and liberate the dull coal resource, a mining waste displacement concept was put forward according to the green mining concept. Based on the production specification of Xingdong Mine and through the full consideration of the stability of coal pillars, the roadway deformation and the filling sequence, a simulation scheme with different filling parameters was designed. The numerical calculation results showed that in the conditions of the roadway with the fixed size, the 4. 5 m coal pillar width and the 18 m minimum interval between the simultaneously filled roadways, the deformation convergence of the roadway was smaller and the mining rate was higher. The successful application of roadway waste filling technology displaced underground dull coal resource and produced greater economic and environmental benefits.