沿空切顶留巷技术在新维煤矿大采高、发火煤层的应用
The Technology of Retaining Lanes along Empty Cutting Roof in Xinwei Coal Mine Application of Large Mining High and Fire-Fired Coal Seams
摘要:
新维煤矿8#煤层平均厚3.72 m，距7#煤层平均间距6.31 m，属于自燃发火煤层，近距离煤层群赋存条件下区域漏风复杂，工作面层间漏风严重，对防火工作极为不利。本文以8102工作面为例，使用沿空切顶留巷技术，通过强化支护质量，保证切顶留巷质量，满足后续工作面正常使用，同时完善支护及切顶参数，为新维煤矿工作面沿空切顶留巷留下一套成熟的技术体系。
Abstract:
The average thickness of 8# coal seam of xinwei coal mine is 3.72 m, and the average spacing to 7# coal seam is 6.31 m, which belongs to the self-ignition coal seam. The area leakage wind is complex under the condition of the close coal seam group, and the leakage wind between the layers is serious, which is extremely unfavorable to the fire prevention work. This paper takes 8102 working face as an example, using the technique of leaving lanes along the empty roof, and by strengthening the quality of supporting, ensuring the quality of the cutting top remaining lanes, satisfying the normal use of the subsequent working face, and improving the supporting and cutting parameters, to leave a set of mature technical system for Xinwei coal mine working face along the empty cutting top.
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