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在常规高速公路隧道勘探中,特长深埋隧道一般采用地质调绘、物探、钻探方法,即在以稀疏控制性钻孔配合全线物探剖面结合地调完成全线勘探工作,对覆盖层厚度、断裂破碎带、隧道围岩级别进行划分,此模式在汉十高速、厦蓉高速等隧道勘探中取得了较好的勘探效果。但在沪蓉西高速公路龙潭隧道断裂及强岩溶发育段出现了不足,未能达到理想效果,由于该问题比较典型,在此针对其问题进行总结反思。
In conventional highway tunnel exploration, deep tunnels are generally used by geological mapping, geophysical exploration, drilling methods, that is controlled by a combination of sparse control drilling and geophysical prospecting section completed a full range of exploration, the cover thickness, broken fracture Belt and tunnel surrounding rock level division, this mode in the Han-10 high-speed, Xiamen-Chengdu high-speed tunnel exploration and achieved good exploration results. However, the failure of Longtan Tunnel and the development of strong karst in Shanghai-Chengdu Expressway failed to achieve the desired result. Since the problem is typical, the problem was summarized in this article.