高速公路下开采减少充填量可行性分析

Reducing Filling Amount under Highway Mining Feasibility Analysis

煤矿采用充填法进行开采时,充填高度直接决定着充填速度和充填成本,西马煤矿N-1205和N-1206工作面采用似膏体充填进行开采。对N-1205和N-1206工作面上下边界采用概率积分法的数学模型预计地表沉陷,确定保证地表高速公路安全的情况下确定了各个变形的极限值,分别计算各变形值取极限值时采深与充填高度的关系,得出在采深较大时可以适当减少充填高度,从而达到提高充填速度,降低充填成本的目的。

When mine filling method was adopted to improve the production, filling height directly decided the filling velocity and filling cost, Xima Mine N- 1205 and N- 1206 working face were mining with paste filling. Probability integral method, the mathematical model was adopted to expect surface subsidence of N- 1205 and N- 1206 working face up and down boundary, which ensured the various deformation limit value under the condition of highway safety guarantee, the deformation limit value when the deep relationship with the filling height was calculated, the result showed that filling height could be reduced with large mining deep to reach the goal of improving the filling speed, reducing the filling cost.