朱集西矿深井巷道断面优化研究

Research on Section Optimization of Deep Mine Roadway in Zhujixi Coal Mine

针对朱集西1000 m深部矿井所面临的采掘接替紧张问题,对11-2煤11403工作面运输巷原直墙半圆拱巷道断面形状进行优化,以求提升掘进速度。提出了将原巷道断面改为矩形巷道的优化方案,采用FLAC3D进行数值模拟分析优化原巷道断面支护参数。从工业性试验结果来看,巷道最大顶底板移近量为200 mm,最大两帮移近量为30 mm,巷道掘进速度由4.8 m/d提高至6.4 m/d,有效地控制了巷道变形量并加快掘进速度,满足了生产需要,达到了预期目标。

Aiming at the tense problem of excavation and replacement in Zhujixi 1000 m deep mine,the section shape of the original straight wall semi-circular arch roadway of the 11-2 coal 11403 working face transportation roadway was optimized in order to increase the excavation speed.An optimization scheme of changing the roadway section to a rectangular roadway is proposed,and FLAC3D is used to carry out numerical simulation analysis to optimize the support parameters of the original roadway section.From the results of the industrial test,the maximum moving amount of the top and bottom of the roadway is 200 mm,the maximum moving amount of the two sides is 30 mm,and the excavation speed of the roadway is increased from 4.8 m/d to 6.4 m/d,which effectively controls the roadway.The amount of deformation and the speed of excavation are accelerated,the production needs are met,and the expected goal is achieved.