喷射混凝土,根据拌合料的不同可分为干式、潮式和湿式三种。干式是将未经加水的混凝土拌合料加入喷射机;在喷嘴处再加水混合,然后喷射于岩面。潮式是把水灰比为0.3左右的拌合料装入喷射机,并在喷嘴处再次加入适量的水混合之后进行喷射。湿式是将混凝土拌合料与水充分搅拌后装入喷射机予以喷射的。现分析比较如下: Sprayed concrete, according to the different mix can be divided into dry, tidal and wet three. Dry is the addition of water without adding the concrete mix to the jetting machine; adding water at the nozzle to mix and then spray on the rock face. Tidal type is the water-cement ratio of about 0.3 mixing material into the jet, and at the nozzle again after adding an appropriate amount of water mixed injection. Wet is the concrete mix with water after mixing into the jet to spray. The analysis is as follows: