关键词: 冲击危险工作面, 震动波, 反演预警, 应力分布, 危险区域

Abstract: In order to solve the technical problems of long inversion period, low ray coverage and unreliable results in deep and dangerous working face, the integrated wave velocity inversion technology of active and passive seismic wave is proposed to monitor and early warn the shock risk. Based on SIRT algorithm, the wave velocity inversion is carried out in the monitoring area and the stress distribution is analyzed. The inversion period is greatly shortened. The early warning index of the technology is used to quickly obtain the impact dangerous area. Taking the 2309 working face of Anju mine as an example, the method of comparing single day wave velocity CT inversion with continuous six day wave velocity CT inversion is proposed, and the stress distribution law of deep impact dangerous working face during mining is studied in depth. The research results show that during the working face mining, the technology accurately predicts the high stress distribution area in the working face and determines the impact risk level. Combined with the field drilling test, the accuracy of the inversion and early warning of the technology is verified, and the application effect is good.