大采高综采面高瓦斯综合治理技术优化研究

Research on Optimization of High-gas Comprehensive Control of Fully-mechanized Mining Face

针对高瓦斯矿井产量大、存在瓦斯突出和爆炸危险,研究分析大采高综采工作面卸压瓦斯运移规律,提出U+I型通风、顺层钻孔抽采本煤层瓦斯和走向高抽巷抽采的综合治理技术。结果表明:对采空区、本煤层和邻近层及工作面顶板裂隙带内瓦斯抽放效果良好,实测工作面瓦斯浓度和抽采率分别为0.265%和83.3%,满足安全生产要求。

For high-gas coal mine production, and the presence of gas outburst and explosion hazard, theoretical analysis has obtained the law of relieving pressure and gas migration in fully-mechanized high-cutting fully mechanized mining face, and proposes the U+I type ventilation and the parallel drilling to extract the gas and driving direction of the coal seam. Comprehensive controlling optimization technology for drainage of high drainage roadway. The results show that the proposed comprehensive treatment technology can realize the gas in the goaf, the coal seam and the adjacent layers and the cracks in the adjacent roof, and the industrial experiment. The gas concentration and extraction rate in the working face were 0.265% and 83.3%, respectively, which met the safety production requirements of the working face.