Coal Mine Floor Water Inrush Warning Based on Micro-seismic Monitoring Technology
Coal mine floor water inrush is one of the main disasters in mining production,and its destructive nature is extremely high,therefore,researching effective water inrush warning technologies is of great significance.Taking 22517 working face of Dongjiahe Coal Mine as an example,a micro-seismic monitoring system was constructed to provide water inrush warning for the floor.Monitoring data shows that there are a total of 191 micro-seismic events on the floor of the coal mine,of which only 18 have energy exceeding 1 000 J,accounting for 9.63% of all micro-seismic events.At the same time,the system detected a floor failure depth of about 11.01 m,which is only 0.22 m different from the data calculated by the floor drilling acoustic instrument test.These data can demonstrate that the micro-seismic monitoring technology proposed in the study can effectively predict water inrush accidents on the coal mine floor,play a good warning role,and provide reliable technical support for water hazard risk prevention in coal mining operations.
micro-seismic monitoring technologycoal miningwater inrush from seam flooraccident pre-warning
NETL
NSTL
万方数据
