As support and liner against cross section rock, spraying-concrete has enormous influence on the tunneling progress and the safety of the TBM tunnel's tunneling machine.
As support and liner against cross section rock, spraying-concrete has enormous influence on the tunneling progress and the safety of the TBM tunnel's tunneling machine.
作为隧洞断面岩石支撑和衬砌的重要手段之一的喷射混凝土支护对TBM隧洞掘进机掘进进度和安全影响极大。