某海底隧道岩石覆盖厚度及选线方案优化研究  

Study on Rock Cover and Route Optimization of Subsea Tunnel

作　　者：丁万涛[1] 李术才[1] 朱维申[1] 

机构地区：[1]山东大学岩土与结构工程研究中心,济南250061

出　　处：《地下空间与工程学报》2007年第3期463-469,共7页Chinese Journal of Underground Space and Engineering

摘　　要：通过对国内外海峡海底隧道的调研分析,归纳得到三种确定最小岩石覆盖厚度的方法-挪威经验公式法、日本最小涌水量预测法以及国内顶水采煤经验法。利用上述三种方法,对象山港某海底隧道的最小岩石覆盖层厚度进行工程类比。综合考虑三种方法的分析结果,结合隧道地质条件,获得最优的岩石覆盖厚度。结合隧道海底的地形及地质条件,选择一个剖面作为控制剖面,根据隧道的设计坡度分别得到隧道底板线的位置及各个剖面在设计坡度下的岩石覆盖厚度,并与工程类比厚度比较。分析比较结果,调整隧道底板线部分的坡度,使得隧道在满足安全的条件下,得到最短的隧道线路,决定该海底隧道的最优选线方案。By investigating the subsea tunnels all over the world, three methods for mininal rock cover determination have been gained, such as Norway experiential method, the minimum leakage method and experience from coal cutting under water. According to above - mentioned methods, the engineering analogy is used to decide the minimum rock cover of subsea tunnel at Xiang Shan harbor. The results of three methods are compared with considering its geology and the optimal rock cover is gained. To take into account the subsea landform and geology, one profile is chosen to be the reference profile. According to the design gradient of the subsea, the tunnel motherboards and the rock covers of profiles are obtained. Comparing these data with the results of engineering analogy, the shortcut of tunnel under the safe condition has been gained by adjusting the gradient of partial tunnel motherboards, thus to decide the optimal scheme for construction of the subsea tunnel at Xiang Shan harbor.

关 键 词：海底隧道 最小岩石覆盖厚度 最大坡度 最优方案 

分 类 号：TU459.5[建筑科学—岩土工程]