冲击危险区域震动波CT反演探测技术应用

Application of CT inversion detection technology for shock wave in hazardous area of rock burst

针对传统冲击地压监测方法存在的探测范围有限、危险区域探测精度低、结果反馈不直观等问题,运用KJ470震动波CT反演探测技术对综放工作面冲击危险区域高应力区进行探测,探测结果表明,高应力分布区域与地质变化及构造发育区域、冲击地压事件震源点位置区域基本吻合。该系统可通过大范围、高分辨率、高效率监测波速分布,探测采掘工作区域内的应力场,显化潜在冲击危险区域,通过一段时间连续的波速反演,总结出冲击地压危险区域的分布规律,制定有效的防治措施,杜绝冲击地压事故发生。

In view of the limited detection range,low detection accuracy of dangerous areas,and unintuitive result feedback in traditional rockburst monitoring methods,KJ470 seismic wave CT inversion detection technology was used to detect high-stress areas in fully-mechanized caving face impact dangerous areas.The detection results showed that the high stress distribution area is basically consistent with the geological change and structural development area,and the location of the focal point of the rock burst event.The system can monitor the wave velocity distribution in a large-scale,high resolution and high efficiency,detect the stress field in the mining work area,and visualize the potential shock hazard area.Through the wave velocity inversion for a continuous period of time,it can summarize the impact of the rock pressure hazardous area.The distribution law and effective prevention and control measures prevent the occurrence of rock burst accidents.