Trend analysis and prediction of mine earthquake of Pingdingshan coal mining area

摘要

Mine earthquake is one type of the mine dynamic phenomena that threats the safety production of mine with the mining depth increasing, the frequency and intensity of the mine earthquake are increasing in the mine, which bring the huge stress to safety production. According to the record of mine earthquake provided by Pingdingshan Seismological Bureau, analysised the b-value sequential characteristic and energy creep trend of the mine earthquake about Pingdingshan coal mining area with seismology and statisticcal method, revealed mine earthquake frequency and intensity trend of Pingdingshan coal mining area in the future; Fit ML-lgN linear curve of mine earthquak by the method of minimum square, and predicted the largest magnitude of the mine earthquake which may occur in Pingdingshan coal mining area in the future.