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简要介绍了平顶山一矿北2 进风井壁后注浆施工的工艺过程和注浆效果 ,对壁后注浆技术经济效益进行了分析
Briefly introduces the process and grouting effect after grouting construction in the north 2 inlet shaft of Pingdingshan No. 1 Mine, and analyzes the economic benefits of the grouting technology behind the wall