Danger analysis and prevention technology of mine pressure bump from residual coal pillar mining face

Wei Zhenquan

doi:10.13199/j.cnki.cst.2016.12.005

Abstract：In order to effectively prevent the mine pressure bump occurred during the mining period of No.512 residual coal pillar mining face in Tianchen Mine,the comprehensive index method and the possibility index method were applied to the macro prediction of the mine pressure bump danger.The multi factor coupling evaluation method was applied to divide the mine pressure bump danger area and danger degree and the mine pressure bump prevention and control measures were provided.The results showed that No.512 residual coal pillar mining face would have " strong pressure bump danger",the possibility to cause the mine pressure bump would be " probable" with four medium danger zones and three high danger zones.With the advance conducted pressure pre-released measures and the microseism monitoring and the stress dynamic monitoring and measuring conducted during the mining process,with the coal dust detection and danger releasing measures conducted in the mine pressure bump early warning area,a safety mining of No.512 residual coal pillar mining face was reahzed.The practices showed that the macro prediction on the mine pressure bump danger of the residual coal pillar mining face and the division on the pressure bump danger zones and danger degree,a mine pressure bump control procedure with the "pressure pre-releasedmonitoring,measuring and early warning-inspection-danger released" conducted could effectively prevent the mine pressure bump occurred in the residual coal pillar mining face.