提高隧道地震波地质预报(TSP)精度方法研究

Methods of Improving Tunnel Seismic Prediction Accuracy

TSP(Tunnel Seismic Prediction)作为应用最广泛的隧道弹性地震波反射方法之一,在现场使用上经常存在不规范操作,导致预报精度无法满足安全施工要求。基于TSP预报系统的工作原理,从反射地震波接收质量与触发地震波强度两方面出发,提出了多种方法来提高预报精度,主要包括:确定最佳搜索角、传感器孔与炮孔的高质量耦合、提供良好的作业环境、选择延时误差小的瞬发电雷管、确定合适的炮孔装药量等,再将研究成果应用于现场实践中,旨在积累经验,为隧道地质预报工作提供参考。

As one of the most widely used tunnel seismic reflection methods,TSP（tunnel seismic prediction） is often improperly operated in its field application,which reduces the prediction accuracy and exerts unfavorable influence on the tunnel construction.Based on the theory of TSP,methods of improving prediction accuracy are put forward from aspects of the receiving quality of reflection seismic wave and the blasting seismic strength.The main methods include the determination of best searching angles,the qualified coupling of receiving hole and boreholes,the satisfactory working circumstance,the selection of short delay-error electric detonator and appropriate borehole explosive dosage.The research results are applied to field practice,and helps accumulate experience and provide reference for tunnel geological prediction.