超前地质预报ISP系统在TBM隧道施工中的应用

Application of ISP of Advance Geological Prediction in TBM Tunneling

通过阐述ISP系统的原理并结合国内外2个工程应用实例,得出结论:RSSR波的能量远高于P波,具有更高的信噪比,采用较少炮点和数据量即可获得较好的效果;连续测量对预测结果的准确性有重要影响,在同一或相近位置重复出现的异常体,存在的可能性及定位的精度可有效提高;ISP系统有效避免了爆炸震源带来的潜在危险性,减少了钻孔工作量和数据处理时间,降低了占用隧道内空间的需求,从而较大程度提升了安全性和高效性,并解决了隧道内空间狭小的问题。

This article expounds principle of the ISP system.Two application practices of ISP at home and abroad are introduced.The conclusion show that:The energy of RSSR wave is much higher than P wave and has higher signalnoise-ratio.A good effect can be obtained by less shot points and data volume;Continuous measurements has important influence on the accuracy of prediction results,the existence possibility and positioning accuracy can be effectively improved if the abnormal body repeated appear at the same or similar position;The ISP system effectively avoids the potential risk of explosive source,reduces drilling workload and data processing time,and decreases the demand of occupying space in the tunnel so that security and efficiency can be greatly improved and the problem of narrow space in the tunnel is solved.