Support Technology of Roof During End-mining in Fully-mechanized Coal Face

According to the retracement experience in Dafosi coal mine working face, combining with working face the end-mining technology, the paper systematically discusses withdrawing support scheme in fully mechanized caving face. The success of the test not only creates good conditions for rapid retracement in Dafosi working face, but also greatly alleviates the replacement tense situation for Dafosi mine fully mechanized face.