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喷射混凝土机械喷射混凝土工法的种类隧道施工中的支护工程由钢支护和板桩支护的施工方法转变成新奥法(NATM)的喷射混凝土和锚杆兼用的支护方式,即开挖后为防止围岩的松动、脱落,立即进行喷射混凝土。喷射混凝土工法的分类是根据向喷射机内投入水泥、骨料的方式而确定的,分为干式、湿式、半湿式和混合式4种。干式即干喷方式,是将粗骨料、细骨料、水泥按一定配比搅拌均匀后连同
Sprayed Concrete Machinery Types of Shotcrete Construction The support works in tunnel construction are changed from the construction methods supported by steel support and sheet pile to the support mode used by NATM for shotcrete and rock bolt, that is, the excavation After the rock in order to prevent the loosening, fall off, immediately sprayed concrete. The classification of shotcrete method is based on the injection of cement into the jet, aggregate way, and is divided into four types of dry, wet, semi-wet and mixed. Dry that is dry spray, is the coarse aggregate, fine aggregate, cement according to a certain ratio Stir together with