利用灌浆锚杆加固地下结构物日益广泛。原因是采用这一方法可以节省材料,制作简便,经济,承载能力大。与传统支撑法相比,此法可缩短工期,降低造价,还可以在空间大的基坑内进行出土和安装结构。与冻结法相比,此法可 The use of grouting bolts to reinforce underground structures has become increasingly widespread. The reason is that using this method can save materials, make it simple, economical and have a large carrying capacity. Compared with the traditional support method, this method can shorten the construction period and reduce the cost. It can also carry out the excavation and installation structure in a large space pit. Compared with the freezing method, this method can be