Application of Charge Induction Monitoring Technology of Mine Dynamic Disasters

According to the status that the omen information of the mine dynamic disaster was hard to distinguish and the prediction accuracy was low, the paper pr oposed a non-contact type charge induction monitoring technology and applied to predict the mine dynamic disaster.A self developed electric charge induced system wa s applied to the electric charge induced measurement and test of the coal and rock under the uniaxial compression, uniaxial tensile, triaxial gas bearing compression an d other loading method.The |lab data was applied to discover the coal and rock deformation, the failure macro and micro mechanism.The site on-line charge induction m onitoring revealed the time and space variation law between the coal stress and induced electric charge on the coal wall surface during the excavation process of the C oal mining face.A prospect was conducted on the outlook of the charge induction monitoring technology applied to predict coal and rock dynamic disaster.The variation of the electric charge value as the omen information of the coal and rock cracking was applied to research and develop the monitoring and measuring instrument and e quipment suitable applied to different type mine dynamic disaster.Thus the charge induction monitoring technology of the mine dynamic disaster was formed.