PDF(274 KB)
PROSPECT OF DRILLING AND BLASTING METHOD FOR CON?STRUCTING EXTRA-LONG TUNNEL IN CHINA
ZHANG Jin-fu
Journal of Railway Engineering Society ›› 1999, Vol. 16 ›› Issue (4) : 99-102.
PDF(274 KB)
PDF(274 KB)
PROSPECT OF DRILLING AND BLASTING METHOD FOR CON?STRUCTING EXTRA-LONG TUNNEL IN CHINA
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