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为了减少煤壁片帮、防止掘进面顶板的冒落、降低煤体的产尘能力及煤尘飞扬程度,平沟煤矿采用对掘进工作面超前深孔注入含有表面活性剂、黏结剂为主要成分的混合水溶液的技术。结果表明;对掘进工作面超前注入混合水溶液能有效地防治煤壁片帮和掘进面顶板的冒落、降低工作面的粉尘浓度。
In order to reduce the coal wall film to prevent the tunnel roof caving, reducing coal dust production capacity and the degree of coal dust flying, Pinggou coal mine using advanced heading deep into the surface containing surfactant, binder as the main component Mixed aqueous solution of technology. The results show that advancing injection of mixed aqueous solution on the working face of tunneling can effectively prevent the roofing of the coal wall and driving face from falling and reduce the dust concentration on the working face.