基于可释放弹性能的窄煤柱合理宽度研究
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摘要
山西某矿1327工作面巷道变形严重,首先利用极限平衡理论确定沿空掘巷窄煤柱留设尺寸为6.81～7.70 m,然后利用FLAC3D内置fish语言进行可释放弹性能的编程,分析了4种不同煤柱方案下可释放弹性能的释放情况,结果表明7 m煤柱时可释放弹性能较小且承载能力较好。最后综合理论结果和模拟结论,确定沿空掘巷合理煤柱尺寸7 m.
The roadway of 1327 working face in a mine in Shanxi is seriously deformed.Firstly,the Limit equilibrium Theory is used to determine the narrow coal pillar size of the roadway along the goaf is 6.81～7.70 m.Then the FLAC3D built-in Fish language is used to program the releasable elastic energy.Release of elastic energy released under four different coal pillar schemes.The results show that the 7 m width coal pillar can release less elastic energy and better bearing capacity.Finally,the theoretical results and simulation conclusions are combined to determine the reasonable coal pillar size of 7 m along the goaf roadway.
The roadway of 1327 working face in a mine in Shanxi is seriously deformed.Firstly,the Limit equilibrium Theory is used to determine the narrow coal pillar size of the roadway along the goaf is 6.81～7.70 m.Then the FLAC3D built-in Fish language is used to program the releasable elastic energy.Release of elastic energy released under four different coal pillar schemes.The results show that the 7 m width coal pillar can release less elastic energy and better bearing capacity.Finally,the theoretical results and simulation conclusions are combined to determine the reasonable coal pillar size of 7 m along the goaf roadway.
引文
[1]张文伟.深部煤层合理煤柱留设尺寸理论研究[J].山西焦煤科技,2018,42(8):44-46.
[2]马占国,范金泉,孙凯,等.残留煤柱综合机械化固体充填复采采场稳定性分析[J].采矿与安全工程学报,2011,28(4):499-504,510.
[3]王猛,柏建彪,王襄禹,等.深部倾斜煤层沿空掘巷上覆结构稳定与控制研究[J].采矿与安全工程学报,2015,32(3):426-432.
[4]崔楠,马占国,杨党委,等.孤岛面沿空掘巷煤柱尺寸优化及能量分析[J].采矿与安全工程学报,2017,34(5):914-920.
[2]马占国,范金泉,孙凯,等.残留煤柱综合机械化固体充填复采采场稳定性分析[J].采矿与安全工程学报,2011,28(4):499-504,510.
[3]王猛,柏建彪,王襄禹,等.深部倾斜煤层沿空掘巷上覆结构稳定与控制研究[J].采矿与安全工程学报,2015,32(3):426-432.
[4]崔楠,马占国,杨党委,等.孤岛面沿空掘巷煤柱尺寸优化及能量分析[J].采矿与安全工程学报,2017,34(5):914-920.