TRT在隧道地质超前预报中的应用

Application of TRT for Geological Advanced Prediction in Tunnel Construction

在隧道施工中,由于勘察设计的局限性和隧道围岩地质条件的复杂多变性,因此难以对复杂的地质情况做出准确的微观把握,往往造成地质勘探资料与实际情况不符,经常遇到岩溶突水、软弱围岩大变形、塌方、沉陷、岩爆、瓦斯突出等地质灾害,导致人身伤亡,工期延误,为了将地质灾害影响程度降到最低,施工前进行超前地质预报是十分必要的。详细介绍了TRT超前预测预报系统的原理、方法及突出特点,并以大瑞线铁路尖山岭隧道为实例,对预报结果进行了较为详细的处理、分析和现场验证,最后指出了该技术待进一步研究的问题。

In the tunnel construction,because of the limitation of survey and design and complicated variety of the tunnel surrounding rock geological conditions,it is very difficult to make accurate micro grasp for complicated geological conditions,which often cause that the geological prospecting data do not correspond with practical ones,so the geological hazard such as Karst water bursting,large deformation of soft rock,collapse,subsidence,rock outburst,gas burst,and so on were frequently encountered.For the purpose of effective reducing the degree of the geological hazard,it is quite necessary to carry out the geological forecast at pre-construction.In this paper the principle,method and outstanding feature of TRT advanced prediction and forecast system were introduced in detail.Taking the Jianshanling tunnel at Darui railway as an example,the forecast results were in detail processed,analyzed and field validity was taken out.Finally,further research problems of this technique were pointed out.