A New Method of Coal Seam Roof Classification and Its Stability Evaluation

To make reasonable evaluation on the stability of coal seam roof and solve the problem of distortion of evaluation results caused by inconsistent parameters selection, firstly, starting with the definition of roof of all kinds of coal seams, a new roof type division method is proposed, and taking Linbei Coalfield as the research object, all kinds of roof are re-divided and evaluated; secondly, comparing the evaluation results of traditional and new roof partition methods; finally, the potential engineering and hydrogeological problems in future mines reflected by the evaluation results are tested through the investigation of adjacent production mines with the same geological conditions. The results show that the new classification standard can objectively reflect the roof characteristics of the study area and its surrounding mines to provide a method for coal seam roof classification and stability evaluation.