Roadway Protection by Roof-Cutting in the Support Removing Channel of the Long-Wall Mining Face

Aiming at strong mining pressure and large deformation of surrounding rock in the main roadway, a mechanical model advanced abutment distribution long-wall face was established. The reason for roadway found to be unreasonable position stop line, which brings under influence operations. Therefore, on premise an unaltered technique cutting roof use relief protect were proposed. will form weak surface along blocking layer from transmitting pressure. Engineering practice shows that by using pressure-relief technique, is reduced protected.