| Mine in the production process, when the stope mining or roadway excavationwould overburden mining disturbance caused by such disturbances will make coal orrock already in a state of high stress concentration, have accumulated a lot offlexibility potential energy. When the elastic potential energy of coal or rock willcause a sudden release of coal or rock suddenly take off, throws, vibrate, sound, andother significant mine blast shock phenomena, which will be collectively referred toas the dynamic pressure phenomena mine, is also a strong mine pressure behavior.Epiphany strong mining pressure mine personnel and equipment would cause greatharm, the harm has considerable energy as dynamite explosions occurred, and someeven able to form a strong storm. Meanwhile in the process of exploitation of themine, if you have been in a state of high stress concentration under, rockburst willgreatly increase the probability of occurrence.Hu Jia River coal mine in Shaanxi beginning because of the design belongs todeep mining, Ida main coal seam layer is on the4th, the3rd local coal seam coal, coalseam depth is578~817m, an average of680m, so the big mining depth of the mineTake the decision from the mine pressure behavior of a particularly serious problem.Round as hazardous for Hu Jia River coal mine401102,401103Face of strongpressure caused by the phenomenon, the initial detailed mine hydrogeologicalinvestigation, after the analysis is targeted. Respectively, mining depth, seam impacttendencies, seam thickness, the impact of coal pillar and roof rock and other aspectsof the detailed analysis and calculation, completed the process of working face strongtunneling underground pressure hazard assessment, and the late work face the risk ofthe mining process were evaluated. Reasonable relief measures proposed. Finally HuRiver mine own conditions, has developed a strong underground pressure targetedmultidimensional information monitoring systems and protective measures in theproduction process. |
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