大采高综放工作面瓦斯综合治理技术与应用

Application and technology of comprehensive gas control in fully mechanized mining face of large mining height

针对斜沟煤矿18205工作面大采高的特点,分析其瓦斯涌出来源,有根据的提出治理措施。在瓦斯治理巷投入使用前,通过上隅角悬管与顶板裂隙带钻孔抽采对工作面涌出的瓦斯进行治理,瓦斯治理巷投入使用后,与顶板裂隙带钻孔抽采相结合进行瓦斯综合治理,有效降低了瓦斯含量,解决了采空区基本顶周期来压时的上隅角瓦斯超限问题。

Based on characteristics of large mining height in 18205 mining face, its gas emission sources were analyzed and management measures were proposed. Before operation of gas control roadway, gas released from the working face was treated by borehole extraction in upper comer hanging pipe and roof fracture zone. After application of gas control roadway, gas content was effectively reduced by comprehensive gas control combining with drilling in roof fracture zone, which solved gas overrun problem in upper comer of goal under pressure.