我国煤矿瓦斯治理中存在瓦斯抽采钻孔封孔质量差、漏气严重等问题,导致瓦斯抽采浓度低,不能满足瓦斯治理的需要。为提高瓦斯抽采浓度和钻孔利用率,研制了赛瑞封孔剂和专用注浆泵,设计了组合式注射封孔工艺,并在神华宁夏煤业有限责任公司乌兰煤矿试验成功。 In China’s coal mine gas management, there are problems such as poor sealing quality of gas drainage borehole and severe gas leakage, which leads to low concentration of gas drainage and can not meet the needs of gas treatment. In order to improve the concentration of gas drainage and the utilization rate of boreholes, Serui sealing agent and special grouting pump were developed. Combined injection sealing technology was designed and successfully tested at Wulan Coal Mine of Shenhua Ningxia Coal Industry Co., Ltd.