坚硬顶板下综采工作面瓦斯治理技术研究

摘要

Gushuyuan Coal Mine 15#fully mechanized coal face use u type ventilation , during mining , High concentration of gas accumulated in gob rush into the working face, upper corner and return air lane, under the action of negative pressure ventilation, only ventilation dilution gas has been unable to solve the upper corner gas concentration overrun problem, through the use of strike drilling hole and the adjacent layer gas drainage and roof pre-splitting blasting gas comprehensive management technology, well solve the top corner gas overrun problem, and realize high effective and safe production in the working face.%古书院矿15#综采工作面采用u型通风方式，回采过程中采空区积存的高浓度瓦斯在通风负压的作用下涌向工作面、上隅角和回风巷，仅靠通风稀释瓦斯已无法彻底解决上隅角瓦斯浓度超限问题，通过采用走向钻孔和临近层瓦斯抽采以及顶板预裂爆破等瓦斯综合治理技术，较好解决了工作面上隅角瓦斯超限问题，实现了工作面的高产高效安全生产。