Initiative micro seismic monitoring technology applied to early warning of mine dynamic disaster

in order to futher improve the postioning acuracy of the micro seisnic monitoring system,pased on the conventional micro seismic montoring technology a naw iniatve microsesmic montorin fechmology was provided. With a elf reseached and developed excited seisimic source, an automat c frequency converted seismic could be realized and the longtudinal wave propagatio speed in the coal and rock mass could be timely calculated. 7he paramnetersof the micro seismic systemcould be optimized and fnally the high accuracy and high relability monitoring could be realized for a micro seisnic acdent The selfresearched and developed KJ768initiatve micro seismic monitoring systen with the technology were appied to the actual appications in Yuejin Mine,Shigeal Mline,aiuc iMline and other several stes.The resulis showed that the intiative micr se smic monitoring technology would have the muti ype montoring high montoring accuracy and oter feaures in the mine dynamic pressure prevention and control area and could efe ctively soie the early waning of the mine strata rssure bunmp disaste;eary warming of the mine powerudynamic pressure from the shallow depth seam and other several problems.