The paper introduces the structure, working principle and trial of the recovery anchor and further describes the economical application and potential prospect in Datong coal mines based on the condition of the roadways and supporting cost underground in our company.

The paper introduces the characteristics of the new occlusion type anchor, and put forward the proposal of needle dam of transposition type.

Effects of the new type of recoverable anchor groups with different disposing spacings

Stress distribution along bonded length of new-type recoverable anchor