Main control factors of rock burst for deeply buried coal seams in Ningzheng mining area based on analytic hierarchy process
Different factors have different effects on rock burst during excavation.In order to explore various factors that af-fect the behavior of rock burst under deep mining conditions,the main influential factors were analyzed regarding the main roadway excavation face of a certain coal mine as the research background,and their weights were determined using the an-aly-tic hierarchy process.The research results showed that:Mining depth,coal seam thickness,fold structure,and hard over-lying rock have a significant impact on the risk of rock burst in the main roadway area,the influence of fold structure and hard overlying rock is particularly significant.Based on the analytic hierarchy process(AHP),a set of weight evaluation system for rock burst impact factors was established to identify the weight differences between the impact factors in each re-gion by dividing the working face areas.After determining the main control factors for each region,the conclusions were veri-fied using microseismic data from each region during roadway excavation.After testing,the microseismic data and the results were highly consistent,which confirmed the argument of this paper.Our paper has certain reference significance for quantita-tive assessment of coal mine impact risk.
rock burstinfluential factorshard overburden rockanalytic hierarchy process
万方数据
维普
