论文部分内容阅读
本文基于绕射扫描叠加偏移原理,利用开发的三维成像技术开展隧道超前预报工作。该方法探测距离远,对断裂破碎带等不良地质体反应灵敏,定位准确,并且三维成像能直观的反应不良地质体的位置。该方法成功的运用到了地质条件极其复杂的白茫雪山隧道超前预报中,并取得了良好的效果.实例证明,该方法行之有效,值得推广应用。
Based on the principle of diffraction and superposition migration, this paper uses the developed 3D imaging technology to carry out the advanced prediction of tunnel. The method has the advantages of long detection range, sensitive response to bad geological bodies such as broken fracture zone and accurate positioning, and the three-dimensional imaging can intuitively reflect the position of bad geological bodies. The method has been successfully applied to the advanced prediction of Baimanshan Tunnel with extremely complex geological conditions and achieved good results. The example proves that the method is effective and worthy of popularization and application.