基于震动场-应力场双云图的冲击危险区快速判定方法及应用

A Rapid Decision Method to Identify Rock Burst Hazard Zones Based on Vibration and Stress Fields and Its Practice

针对冲击地压监测预警的准确性和时效性尚不能满足现场工程需要的难题,通过理论研究、软件开发和现场实践,提出了基于震动场、应力场双云图冲击危险区快速判定方法。该方法通过微地震震动云图可以快速、直观地预测区域冲击危险性,钻孔应力云图对局部进行临场预警,在双云图联合判定下,可以对冲击危险区进行快速判定,进而指导工程现场开展针对性的卸压、支护措施,提高了冲击地压防治效率。研究成果经河南义马矿区现场应用,效果良好。

The accuracy and timeliness of the rock burst monitoring and early warning cannot meet the needs of the field engineering. According to the theoretical research, software development and field practice, a rapid decision method which is based on the contours of vibration and stress fields is proposed to identify the rock burst hazard zones. The vibration contour can be used to identify the regional rock burst hazard rapidly and intuitively; while the stress contour can make early rock burst warning on partial spots. With the joint determination of the double-cloud map, it can quickly determine the rock burst danger area, and then guide the project site to carry out targeted pressure relief and support measures, thus improving the efficiency of preventing and controlling the rock burst. The results of the study have been applied in Yima Mine of Henan Province, and the effect is good.