深部冲击危险工作面主被一体化波速反演预警技术

为解决深部冲击危险工作面震动波反演周期长、射线覆盖率低、结果不可靠的技术难题，提出采用主、被动震动波一体化波速反演技术对工作面冲击危险区域进行监测预警。基于SIRT算法，对监测区域进行波速反演并分析应力分布情况，大大缩短反演周期，利用该技术的预警指标快速获得冲击危险区域。以安居煤矿2309工作面为例，提出单日波速CT反演与连续六日波速CT反演相比较的方法，深入研究深部冲击危险工作面回采期间应力分布规律。研究结果表明：工作面回采期间，该技术准确预判工作面内高应力分布区域，确定冲击危险等级。结合现场钻孔检验，验证了该技术反演预警的准确性，应用效果良好。

Inversion and Early Warning Technology of Integrated Wave Velocity of Active and Passive in Deep Rock Burst Dangerous Working Face

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.