PDF(559 KB)
Control Technology for Strata Deformation of Ultra—shallow—buried and Ultra—high Sectional Tunnel with Underground Excavation
ZHANG Zuo—yi
Journal of Railway Engineering Society ›› 2009, Vol. 26 ›› Issue (5) : 74-79.
PDF(559 KB)
PDF(559 KB)
Control Technology for Strata Deformation of Ultra—shallow—buried and Ultra—high Sectional Tunnel with Underground Excavation
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