远距离下保护层采动对上覆煤层 影响效果研究

平煤股份十矿主采的丁、戊、己3组煤均为突出煤层，丁、戊组煤层间距80~110 m，根据地质赋存条件和瓦斯治理经验，十矿提出将戊组煤层作为丁组煤层的下保护层进行开采的瓦斯治理方案。以戊_8，9-20230和丁_5，6-21180工作面为例，通过考察煤层瓦斯及巷道变形量，对煤层保护影响效果进行分析研究，为十矿瓦斯治理技术路线提供理论依据和实际支撑。

Study on Influencing Effects of Mining of Far Lower-protective Layer on Overlying Coal Seam

Ⅳ，Ⅴand Ⅵ coal seam are coal seams with outburst danger in Pingdingshan No.10 Coal Mine，all of them are main coal seam being mined. The distance between Ⅳ coal seam and Ⅴcoal seam is about 80 ~ 110 m. According to the geological occurrence condition and the gas control experience，a coal seam gas control scheme was proposed that taking Ⅴcoal seam as the lower protective seams of Ⅳ coal seam. Taking Ⅴ_8，9-20230 and Ⅳ_5，6-21180 working face as an example，by analysing coal seam gas and roadways′ deformation，the protective effect of coal seam was studied and analysed，and these conclusions can provide theoretical basis and practical support for gas control technology of Pingdingshan No.10 Coal Mine.