Developed a special shield support for fast withdrawing mining face.

This method with a simple production system,is of lower cost But problems such as methods of tunnel support and feedback and expanding roadway,and designs of ratio of extraction to reservation,should be still studied in the extraction through tunnel.

A fast-withdraw technology and relative safety processes of fully mechanized caving face in steeply-inclined coal seam are introduced.

Through using the special support form and withdraw way,the stopping mining time can be shortened in removing and withdraw at the high grade common coal face.