宽煤柱内沿空掘巷的研究与实践

Study and Practice of Gob-side Entry Driving for Wide Coal Pillar

摘要: 为提高煤炭回收率与解决工作面采掘接替紧张的问题，以余吾煤业回采巷道为研究对象，采用极限平衡理论和数值模拟方法，分析了上区段工作面回采后宽煤柱内垂直应力的分布规律，对在宽煤柱内沿空掘巷的窄煤柱合理宽度进行研究，确定了在宽煤柱中沿空掘巷的窄煤柱合理宽度为5.0 m。
- 沿空掘巷 /
- 极限平衡理论 /
- 数值模拟 /
- 窄煤柱宽度 /
- 宽煤柱
Abstract: In order to improve the coal recovery rate and solve the tension problem of excavation replacement in working face, taking the mining roadway in Tunliu Coal Mine as the research object, the limit equilibrium theory and numerical simulation method was applied to analyze the distribution laws of the vertical stress in the wide coal pillar after mining upper section working face, then it studied the rational width of the narrow coal pillar in the wide coal pillar for the gob-side entry driving, and the relational width of the narrow coal pillar was determined as 5 m.
- gob-side entry driving /
- limit equilibrium theory /
- numerical simulation /
- width of narrow pillar /
- wide coal pillar

[1]	柏建彪，王卫军，侯朝炯，等. 综放沿空掘巷围岩控制机理与支护技术研究[J].煤炭学报，2002（10）：478.
[2]	侯朝炯，郭励生，勾攀峰，等. 煤巷锚杆支护[M].徐州：中国矿业大学出版社，1999.
[3]	谢文兵，陈晓祥，郑百生.采矿工程问题数值模拟研究与分析[M].徐州：中国矿业大学出版社，2006.
[4]	李学华.窄煤柱沿空掘巷稳定原理与技术[J].煤炭支护，2008（2）：1-9.