MULTI-FUNCTIONAL ANCHOR METHOD--SELF DRILLING-GROUTING ANCHOR
多功能锚固新工法——自钻灌浆式锚杆

a multi-functional anchor method, that is called self drilling-grouting anchor, is presented. The action mechanism of this method is analysed to grouting results for soil-reinforcement and preloading of anchor. With unique features of the presented method, it can be used to improve the soil strength, and increase the stability of slope during excavation.