Shotcrete Machine is mainly composed of wheel undercarriage, pumping system and injecting device, which is widely used in shotcrete-bolt support in the fields of various mine roadways, tunnels in railways and highways, culvert, underground engineering, highrise building foundation pit, Military engineering and so on. Concrete mix at a proper ration is sprayed to the sprayed surface by the spray arm from the shortcete machine, and condensed quickly, forming a supporting concrete layer.