| 象山港海底某公路隧道最小岩石覆盖厚度及选线方案优化研究 |
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| 引用本文： | 李术才,丁万涛.象山港海底某公路隧道最小岩石覆盖厚度及选线方案优化研究[J].岩土力学,2006,27(Z1):243-248. |
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| 作者姓名： | 李术才 丁万涛 |
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| 作者单位： | 山东大学 岩土与结构工程研究中心， 济南 250061 |
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| 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，对象山港海底某公路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。根据分析比较结果，调整隧道底板线部分段的坡度，使得隧道在满足安全的条件下，得到最短的隧道线路，从而决定隧道的最优选线方案。
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| 关 键 词： | 海底隧道 最小岩石覆盖厚度 最大坡度 最优方案 |
| 收稿时间： | 2006-06-28 |
Study on minimum rock cover and route optimal scheme of subsea road tunnel at Xiangshan Harbor |
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| LI Shu-cai,DING Wan-tao.Study on minimum rock cover and route optimal scheme of subsea road tunnel at Xiangshan Harbor[J].Rock and Soil Mechanics,2006,27(Z1):243-248. |
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| Authors: | LI Shu-cai DING Wan-tao |
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| Institution: | Geotechnical＆Structural Engineering Research Center, Shandong University，Jinan 250061，China |
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| Abstract: | The subsea tunnels all over the world are investigated; and the three methods, such as Norway experiential method, the minimum leakage method and coal cutting experience under water, are summarized. According to above-motioned methods, the engineering analogy is used to decide the minimum rock cover of a subsea tunnel at Xiangshan Harbor. The results of three methods are thought over overall. Meanwhile its geology is considered. Then the optimal rock cover is gained. To take into account the subsea landform and geology, a 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 those with the results of engineering analogy, the shortcut of tunnel is got under the safety condition by adjusting the gradient of the part of the tunnel motherboards; so the optimal scheme to construct the subsea road tunnel is decided. |
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| Keywords: | subsea tunnel minimum rock cover maximum gradient optimal scheme |
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