浅析隧道洞口不良地质段的施工技术

研究目的:简要介绍隧道洞口不良地质段的施工技术,隧道坍塌的预防和处理措施,总结隧道洞口不良地质段施工的一些体会。研究方法:通过对洞口不良地质段地质条件的分析,提出不同的施工方法并简要介绍其施工技术特点,同时对隧道坍塌的危害及原因进行简要分析,并提出相应的预防及处理措施。研究结果:在隧道洞口施工方案制定时,应充分考虑现场地质条件,施工前应根据现场实际情况对设计和施工方案进行调整,同时针对可能突发的情况做好必要的准备,并在施工中采取相应的措施。研究结论:山区隧道地质条件复杂,应根据不同的情况,采取合适有效的施工技术及施工方法,确保隧道施工安全及运营。

Analysis of Construction Technology of Tunnel Portal in Unfavourable Geological Section

Research purposes: The brief introductions are given to the construction technology of tunnel portal in unfavourable geological section and the measures for prevention and treatment of tunnel collapses,and the summary is made for the experience of construction of tunnel portal in unfavourable geological section.Research methods:Through making analyses of the geological conditions of tunnel portal in unfavourable geological section,the different construction methods are presented and the brief introduction is given to the characteristics of these methods,the analyses are made for the harms and causes for tunnel collapse,and the relative prevention and treatment measures are proposed.Research results:When working out construction program for tunnel portal,the geological conditions should be taken in account fully.Before conducting construction,the design and construction program should be adjusted according to the real site conditions and at the same time the necessary preparation should be done for possible sudden events.The relative measures should be taken in construction.Research conclusions:Since the geological condition of the tunnel in mountain area is complicated,the available and effective construction technology and method should be adopted according to the different conditions,in order to ensure the construction and service safety of tunnel.