赵家山窄煤柱沿空掘巷巷道布置与支护设计

Roadway Layout and Support Design of Zhaojiashan Narrow Coal Pillar Rriving Roadway along Goaf

赵家山煤业有限公司采煤工作面U型巷道布置,顺槽间煤柱留设20 m。为提高资源回收率,减少采空区对沿空掘巷的影响,采取了窄煤柱沿空掘巷巷道布置方式,顺槽支护方案也做了相应优化,通过理论计算确定2103回风顺槽的煤柱宽度为8 m。

The U-shaped roadway is arranged in the coal mining face of Zhaojiashan Coal Industry,and the coal pillar between the trenches is 20 m.In order to improve the resource recovery rate and reduce the influence of goaf on roadway driving along goaf,the roadway layout of narrow coal pillar along goaf is adopted,and the support scheme along trench is optimized accordingly.Through theoretical calculation,the width of coal pillar of the 2103 return air trench is determined to be 8 m.