Seismic CT Detection And Safety Technology Evaluation Of 1906S Working Face Impact Hazard Source

Impact ground pressure is one of the major disasters faced by coal mine safety production.With the increase of mining depth and mining intensity,the strength of impact ground pressure also increases,which seriously jeopardizes mine safety production and effective development.Personal and property safety poses a serious threat.Comprehensive monitoring of impact ground pressure is conducive to ensuring the safety of mine production.Based on the geological conditions and mining conditions of the 1906S working face in Fucheng Coal Mine,the influencing factors of the impact ground pressure are analyzed in detail.It is concluded that the impact ground pressure of the 1906S working face is mainly affected by the concentrated static load factors,including the mining depth,tectonic stress and area.The influence of factors such as section coal pillar and cut-eye position;the comprehensive index method was used to determine the impact hazard level of the 1906S working face in Fucheng Coal Mine during the mining period as a strong impact hazard,and the impact hazard area was divided into two strong impact hazard areas by the multi-factor comprehensive method.11 medium impact danger zones;based on seismic CT technology,the 1906S working face was refined and evaluated,and the impact risk area of the theoretical evaluation was corrected according to the results of seismic CT detection,and the 1906S working face was refined and defined by 4 strong Impact hazard area and three medium impact hazard areas;according to the characteristics of the 1906S working face impact hazard based on concentrated static load,combined with the actual conditions of Fucheng Coal Mine,an impact ground pressure warning method based on online stress monitoring combined with cuttings method is proposed.Developed a method for prevention and control of impact ground pressure based on large-diameter drilling of coal seams.Suggestions for relief parameters and effects testing methods;and for the above,formulated a series of rock burst security and technical management measures for the blessing of the mining town of rockbursts institutions and institution building indicate the direction.