Abstract:

For the surface subsidence problem of the mined-out area covered with crushed rocks bankette,based on the exploration and research of geologic radar,this paper put forward the combination harnessing method of anchoring and grouting in which the anchoring is primary.This method resolved technology problems,such as boring,protecting hole,grouting and anchoring in the crushed rocks bankette by simple equipment and technology.It also has important significance to the harnessing of surface subsidence caused by the mined-out area falling of heavy-inclined and deep ore body.

Key words: surface subsidence, mined-out area falling, anchoring and grouting harnessing