Abstract:
The 7603 working face is a fully mechanized face in thin seam of Qiuji Coal Mine, and it is aslo the first coal mining face of No.6 mining area of eastern coal filed. In order to ensure the safety of the working face, it is necessary to monitor the mining pressure laws to study whether the existing roadway support parameters meet the mining demands or not. Through field measurement, the change laws of the strike and lateral support pressure of the coal in the track lane of 7603 working face are analyzed, and 25 m is determined as the advance support range. The deformation characteristics of surrounding rock and failure range of roadway coal wall were also measured with the advancing of the working face. The study on the surface mining pressure of 7603 shows that the existing supporting parameters of the roadway are reasonable and can meet the production requirements.