| 山区高铁岩溶隧道斜交拱跨暗河处理技术研究 |
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| 引用本文： | 何昌国.山区高铁岩溶隧道斜交拱跨暗河处理技术研究[J].路基工程,2019,0(2):159-163. |
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| 作者姓名： | 何昌国 |
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| 作者单位： | 中铁二院工程集团有限责任公司,成都,610031 |
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| 摘 要： | 在我国西部山区高速铁路建设过程中，面临隧线比高、地质条件复杂等困难。贵广高铁作为世界上穿越喀斯特范围最长、岩溶地质情况最复杂的高速铁路，全线隧道占比54%。为了克服这些岩溶不良地质，设计中采用了回填、桩基处理、梁跨、拱跨、桥跨等多种方式处理暗河、溶洞等。以贵广高铁I级高风险油竹山岩溶隧道大型斜交暗河处理工程为例，综合考虑岩溶暗河与线路相对关系、暗河发育情况、辅助坑道设置等因素，研究采用引水横通道+斜交拱桥+特殊暗洞衬砌的综合处理技术，取得了良好效果。
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| 关 键 词： | 山区铁路 高速铁路 隧道 岩溶 暗河 斜交拱 |
| 收稿时间： | 2019-11-07 |
Study on Technology for Skew Arch Crossing Underground River in Karst Tunnel on Mountainous High-speed Railway |
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| Abstract: | In the process of the construction of high-speed railway in western mountainous area, China faces the difficulties such as high ratio of tunnel to line (RTL) and complex geological conditions. Guiyang-Guangzhou High-speed Railway, as the longest line in the world going across karst area with most complicated karst geological condition, has 54% RTL on the whole line. In order to overcome the bad geological conditions thereof, various means such as backfill, pile foundation treatment, span of grider, arch or bridge, were designed to deal with underground river and caves. The large-scale skew treatment works for underground river in Youzhushan Karst Tunnel with grade I high risk on Guiyang-Guangzhou high-speed railway was taken as an example, with the factors including the relative relationship between the karst, the river and the line, the development condition of the river and the arrangement of service gallery taken into consideration, the comprehensive treatment technology combining transverse diversion channel, skew arch bridge and special underground cave lining, was used, which has obtained good effect. |
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