喷射混凝土是分别以水泵(或其他办法)送压力水、以空压机将压缩空气通过喷射机输送干拌和料至喷头,并使水在喷头处与料混合后喷向工作面的一种施工工艺,近十多年来我国冶金、煤炭、水电,军工等部门,在开挖矿山、井巷、地下洞室及岩石高边坡施工中已广泛运用,效果良好。1978年4至5月,我们在冯家山水库灌溉工程北干八支渠 Sprayed concrete is a water pump (or other means) to send pressure water to the air compressor compressed air through the jet conveyor dry mix feed to the nozzle, and the water in the nozzle at the mixing with the material spray to the face of a construction In recent ten years, China’s metallurgy, coal, hydropower, military and other departments have been widely used in excavation of mines, tunnels, underground caverns and rock slope construction, with good results. From April to May 1978, we conducted eight irrigation works in the north of the Fengjiashan Reservoir Irrigation Project