PDF(1047 KB)
Determination of excavation opportunity of parallel large diameter tunnel and cross passage
YUAN ??Hua, ZHANG Qing-He, ZHAO ??Fei
Chinese Journal of Underground Space and Engineering ›› 2009, Vol. 5 ›› Issue (5) : 985-990.
PDF(1047 KB)
PDF(1047 KB)
Determination of excavation opportunity of parallel large diameter tunnel and cross passage
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