煤矿井下水砂压裂瓦斯治理技术研究

Study on Gas Control Technology with Underground Water-sand Fracturing in Coal Mines

在高瓦斯和煤与瓦斯突出矿井中,针对由于煤层透气性低,导致抽采效率低的问题,研制了井下水砂压裂装置,提出了井下水砂压裂增大透气性的瓦斯治理方法,获得了国家实用新型专利、发明专利,解决了低透气性煤层瓦斯抽采效率低,瓦斯治理困难的技术难题。

Due to the low permeability of coal seams, the drainage efficiency in gassy and coal and gas outburst coal mines is low. To solve this issue, the underground water-sand fracturing device is developed, and the gas control method is proposed using underground water-sand fracturing to increase the permeability. The technology has obtained the national utility model patent and invention patent, which could solve the technical issue of low drainage efficiency in low permeability coal seams and difficulty in gas control.