CP-2型半湿式混凝土喷射机是长沙矿山研究院最新研究成果之一,已出口芬兰,是我国第一种出口的喷射混凝士设备。半湿式喷射混凝土在中国应用极为普遍,支护的井巷总长度超过1800公里。这种方式在西欧、东南亚、美国也应用颇广。中国国内目前使用的混凝土喷射机多系长沙矿山研究院1977年研制的SP-2型和与此相类似的喷射机,总数约达6000台。但这类型 CP-2 semi-wet concrete jets Changsha Institute of Mining Research Institute is one of the latest research, has been exported to Finland, is China’s first export of jet coagulation equipment. Semi-wet shotcrete is extremely common in China, with a total length of more than 1,800 km. This approach is also widely used in Western Europe, Southeast Asia and the United States. At present, most of the concrete jet engines used in China are the SP-2 and similar jet engines developed by Changsha Research Institute of Mining in 1977 with a total number of about 6,000. But this type