Model experiment on top coal recovery ratio in fully mechanized caving face of Xinyu coal mine

In order to study the top coal recovery ratio in fully mechanized caving face, under the engineering background of Xinyu Coal Mine of Fenxi Mining Group, taken the model experimental study on coal recovery ratio in fully mechanized caving face. The results show that, the caving face extraction-caving ratio of Xinyu Coal Mine should be controlled at about 1∶2, and the caving height should be controlled at about 5m; the caving technology should take the one caving one extraction or the two caving one extraction. The research results play an guidance role for Xinyu Coal Mine to improve the top coal recovery ratio in fully mechanized caving face.