Exploration and Treatment of Geological Structures in the Mining Face of Libi Coal Mine in Qinshui Coalfield
This study takes the exploration and treatment of collapse columns in Libi Coal Mine as the research background.Based on comprehensive analyses of mine geology,hydrogeolo-gy,and gas occurrence,we employed geophysical prospecting,drilling,core analysis,and bore-hole peeping to elucidate the development of geological structures.To mitigate the risk of high-pressure water inrush,we implemented a grouting reinforcement for the aquiclude at the floor of the collapse columns.To address gas enrichment in the collapse column areas,we applied curtain grouting to close fracture spaces and implemented source interception and drainage,effectively re-solving the challenge of gas emission in rock roadways.Engineering practice demonstrates that when high-pressure water-outburst mines encounter geological structures,advanced floor grou-ting and curtain grouting can enhance the stability of the floor and surrounding rock,eliminating the risk of water inrush in roadways.The gas emission in rock roadways requires comprehensive prevention and control measures.Curtain grouting can seal gas supply channels,and source inter-ception is the most efficient method for mitigating gas outburst to the working face.
high pressure watergeological structuresgrouting reinforcementintercepting and drainage
万方数据
维普
