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一、目的及意义喷射混凝土支护(简称喷土支护)、锚杆支护、喷射混凝土锚杆支护(简称喷锚支护)以及喷射混凝土锚杆加金属网的联合支护(简称喷锚网联合支护)是当前地下工程建设中(包括铁路隧道,水工隧道,各类地下厂房,仓库及矿山井巷工程、硐室工程等)大力推广的新型支护。国内外生产实践普遍证明,这种新型支护具有良好的使用效果和广阔的发展前途,是多快好省地建设地下工程的好方法和新技术。它对于落实和贯彻毛主席关于要把国民经济搞上去的指示,将具有深远的政治意义和经济意义。喷锚支护的作用及其机理尚未被人们充
First, the purpose and significance Sprayed concrete support (referred to as soil spray support), bolt support, shotcrete anchor support (referred to as spray anchor support) and sprayed concrete anchor plus metal mesh joint support Anchor net combined support) is a new type of support vigorously promoted in the construction of underground works (including railway tunnels, hydraulic tunnels, various types of underground workshops, warehouses and mine shaft projects, chamber projects, etc.). Production practice at home and abroad have generally proved that this new type of support has good use effects and broad prospects for development. It is a good method and a new technology for constructing underground engineering more quickly and economically. It will have far-reaching political and economic significance for the implementation and implementation of Chairman Mao’s directive on going national. Spray anchor support role and its mechanism has not been filled