A method for selection rationality evaluation of the first-mining seam in multi-seam mining

The reasonable selection of the first mining seam in coal seam group is of critical importance for the effective prevention and control of gas disasters during coal mining. At present, the selection of the first seam in a coal seam group is generally based on site conditions and professional experience, which results in a degree of blindness. Therefore, a rationality evaluation system for the selection of the first mining seam is needed to guide the operation of the site, which can guarantee the safety of coal mining. To address this issue, a method for evaluating the rationality of selecting the first mining seam was proposed in this paper. The method provides comprehensive, scientific and reliable theoretical guidance for the selection of the first mining seam when mining coal seam groups by combining the expert evaluation method with the entropy method. At the same time, the reliability of the method was verified through the case study at the Shihao Coal Mine in Chongqing, China. In summary, the method eliminates the blindness in selecting the first mining seam when mining coal seam group and provides theoretical guidance for coal seam group mining operations.