PDF(243 KB)
复杂隧道大变化断面钻爆法施工通风研究
杨衡平, 郭晓松, 张安, 张宝生
PDF(243 KB)
复杂隧道大变化断面钻爆法施工通风研究
Study on Ventilation System During Construction of Complicated Tunnel with Great Variety Section Drilling and Blasting Method
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