Study On Reinforcement Technique Combined Drilling, Anchoring And Grouting Together In Fractured Coal And Rock

This article puts forward a new way-a unification technology ofdrilling, anchoring and grouting aiming at supporting fractured coal and rock in which borehole is difficultly formed. This technology is a blank one in the field of coal abroad and home, and in other industries of China the use of similar technology also begins just now. Drilling, anchoring and grouting together is a particular form of anchoring-grouting. On the basis of the achievement of bolting and bolting-grouting, mechanism, stuff, parameter selection, numerical simulation of drilling, anchoring and grouting and underground test is introduced. It is shown that drilling, anchoring and grouting is the effective technology for supporting fractured coal and rock and has unable comparative superiority to other supporting forms.