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综采中松软煤层煤壁容易片帮 ,导致顶板失稳冒落 ,严重威胁着安全生产。着重介绍使用聚氨脂加固煤壁技术的施工工艺
The soft coal seam in the fully mechanized coal mining is easy to form the coal wall, causing the roof to fall into disintegration and threaten the safety in production seriously. Emphatically introduces the construction technology of using polyurethane to reinforce coal wall technology