区段合理煤柱宽度的数值模拟与研究
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摘要
本文以马兰矿10505工作面设计煤柱宽度为研究背景,采用理论计算结合数值模拟的方法,对工作面护巷煤柱合理宽度进行设计。通过理论计算,确定合理煤柱宽度为25m;通过数值模拟分析发现,当煤柱宽度为20m时,煤柱宽度基本满足要求,但是考虑到复杂的地质情况,将煤柱的宽度留设为25m。
Absrtact: This paper takes the design pillar width of 10505 working face in Malan Mine as the research background, and adopts the method of theoretical calculation and numerical simulation to design the reasonable pillar width of roadway protection in working face. Through theoretical calculation, the reasonable width of coal pillar is determined to be 25 m. Through numerical simulation analysis, it is found that when the width of coal pillar is 20 m, the width of coal pillar basically meets the requirements, but considering complex geological conditions, the width of coal pillar is set to 25 m.
Absrtact: This paper takes the design pillar width of 10505 working face in Malan Mine as the research background, and adopts the method of theoretical calculation and numerical simulation to design the reasonable pillar width of roadway protection in working face. Through theoretical calculation, the reasonable width of coal pillar is determined to be 25 m. Through numerical simulation analysis, it is found that when the width of coal pillar is 20 m, the width of coal pillar basically meets the requirements, but considering complex geological conditions, the width of coal pillar is set to 25 m.
引文
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[2]王德超,李术才,王琦,等.深部厚煤层综放沿空掘巷煤柱合理宽度试验研究[J].岩石力学与工程学报,2014,33(03):539-548.
[3]李安静.平朔井工三矿区段煤柱宽度优化研究[J].煤炭科学技术,2012,40(04):45-48.
[4]朱建明,马中文.区段煤柱弹塑性宽度计算及其应用[J].金属矿山,2011(08):29-32+36.
[5]杨科,谢广祥,常聚才.煤柱宽度对巷道围岩稳定性影响分析[J].地下空间与工程学报,2009,5(05):991-995.