TSP隧道超前地质预报技术在宽大断层内部的应用

Application of TSP to Tunnel Advanced Geological Prediction inside the Wide Fault

当前借助隧道超前地质预报技术对小规模断层的探测及对断层破碎带范围界限的判定在业界已取得了一定的成果,但实际隧道工程中往往也面临着地质条件复杂多变的宽大断层,而在宽大断层内部准确开展超前地质预报探测是当前亟需进一步应用研究的工作。本次研究采用TSP法(一种弹性波反射法)对宽大隧道断层内部的地质情况进行探测,通过资料处理、对比分析,最终取得了较好的探测效果,为相应隧道断层内部安全施工、优化施工方案提供了较好的指导和参考。本文TSP法在宽大断层内部探测的应用研究,也对其他类似地质条件下的预报工作有积极的指导意义。

At present,some achievements have been made in the field of small-scale faults detection and the judgment of the boundary of the fracture zone by using tunnel advanced geological prediction technology.However,the wide fault with complex and changeable geological conditions are often encountered in practical tunnel engineering,so the precise advanced prediction of geological conditions inside the wide fault still needs further application research.This paper adopts the TSP method(an elastic wave reflection method)to detect the geological condition inside the fault.Through data processing and comparative analysis,we achieve a good detection effect eventually,which plays a good guidance and reference role for the internal safety construction of corresponding tunnel faults and the optimization of construction scheme.The application research inside wide faults by means of TSP method will have a positive guiding significance for other prediction work under similar geological conditions.