赵家庄煤矿沿空掘巷窄煤柱合理宽度研究

STUDY OF REASONABLE NARROW PILLAR WIDTH OF ROADWAY DRIVING ALONG GOAF IN YIXING COAL MINE

为减少煤炭损失,提高煤炭采出率,在赵家庄煤矿1206工作面运输巷采用窄煤柱沿空掘巷方式。为确定合理的窄煤柱宽度,利用FLAC^(3D)数值模拟软件对不同煤柱宽度下的巷道围岩变形量进行模拟分析,结合极限平衡理论计算结果,确定沿空掘巷窄煤柱宽度应为6 m。

In order to reduce coal loss and improve coal recovery ratio,narrow coal pillar of roadway driving along goaf was applied in the 1 206 working face transport lane roadway of Zhaojiazhuang coal mine.In order to determine the reasonable narrow pillar width,the deformation of rock surrounding roadway under different pillar widths was simulated and analyzed by FLAC3D Numerical Simulation Software.Combining with the results calculated by limit equilibrium theory,the reasonable width of narrow coal pillar of roadway driving along goaf was determined to be 6 m.