高瓦斯综放工作面瓦斯抽放工程设计

Construction Design of Gas Drainage at High-Gas Fully Mechanized Caving Face

高瓦斯矿井采用放顶煤开采,煤体瓦斯涌出量较大,瓦斯治理难度大,回采时上隅角的瓦斯容易超限,回风巷内的瓦斯时常会很高,造成制约生产进度,给安全带来重大的隐患;本文主要介绍瓦斯抽采设计,通过采用本煤层抽放、高位钻场抽放、高低位裂隙孔抽放、采空区埋管抽放等综合抽放,解决综放工作面回风侧、上隅角瓦斯浓度超限的问题,实现回采工作面的抽采达标。

Top coal caving in high--gas mines would restrict production schedule and bring significant safety risks due to high gas emission and overrun gas at upper corner. The paper introduces the design of gas drainage with comprehensive drainage such as seam drainage, high location drilling field drainage, high--low location fracture hole drainage and immersed tube drainage in goal to solve the problems of gas concentration overrun in exhaust section and upper corner in fully mechanized caving face, which has realized the drainage standard of working face.