Real time microseismic monitoring technique for fracture location of colliery stope roof

The theory of microseismic monitoring technique is introduced.Combining the situation used in Huafeng Coal Mine,the used method,the characteristics and the effect of microseismic monitoring technique are explained.The behavior model of the roof was given according to the situation survey result.The scopes of the immediate roof and main roof were calculated adopting the mining pressure theory.And the results are almost the same as that of microseismic monitoring.This indicates that the results of microseismic monitoring are reliable.Microseismic monitoring technique is of important meaning for the safety of coal mine,the prediction of the period of mining pressure and the increase of recovery rate.