| 内昆铁路沿河谷地段主要工程地质问题与线路方案的地质比选研究 |
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| 引用本文： | 苟定才,屈科,黄润秋,蒋良文.内昆铁路沿河谷地段主要工程地质问题与线路方案的地质比选研究[J].地球科学进展,2004(Z1). |
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| 作者姓名： | 苟定才 屈科 黄润秋 蒋良文 |
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| 作者单位： | 铁道第二勘察设计院地勘分院 成都理工大学地质灾害防治与地质环境保护国家专业实验室 铁道第二勘察设计院地勘分院 四川 成都 四川 成都 610059 铁道第二勘察设计院地勘分院 四川 成都 |
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| 摘 要： | 内昆铁路为国家I级单线铁路,北起成渝铁路的内江站、南至昆明,其中云南水富至贵州梅花山段为新建段,全长357.643 km。新建河谷段不良地质极其发育,主要分布于水富至大关段,影响和控制着线路方案选择的主要工程地质问题有滑坡、岩堆、危岩落石、泥石流、“顺层”等。内昆线在勘察设计中,对河谷(大型)不良地质体及集中发育分布地段线路方案进行了由浅入深、由宏观至局部的方案研究和比选,采取了“裁弯取直”、“内移作隧”、“外移设桥”等不同工程类型的方案比选,方案多采取绕避。对一些难以绕避的,采取对通过该处具体线位的比选,选择有利于稳定的方案,并采取桩、锚索、挡墙等工程防治措施;比选累计长度逾50 km,在线路方案选择中充分考虑地质因素,仅因地质问题提出的改线地段达20余处,充分体现了地质选线的重要性。内昆线施工开挖揭示及结合竣工工程现状,表明河谷地段线路方案的工程地质比选是合理的,工程措施是有效和可行的。
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| 关 键 词： | 河谷地段 不良地质 地质选线 方案比选 内昆铁路 |
A STUDY ON THE MAIN GEOLOGICAL PROBLEMS OF THE NEIJIANG-KUNMING RAIWAY ALONG THE RIVER VALLEYS AND THE SELECTING OF ROUTE |
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| GOU Ding-cai.A STUDY ON THE MAIN GEOLOGICAL PROBLEMS OF THE NEIJIANG-KUNMING RAIWAY ALONG THE RIVER VALLEYS AND THE SELECTING OF ROUTE[J].Advance in Earth Sciences,2004(Z1). |
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| Authors: | GOU Ding-cai |
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| Institution: | GOU Ding-cai~ |
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| Abstract: | The Neijiang-Kunming railway, single track railway, is our national Class I, which begins at the Neijiang railway station, and the terminal is Kunming railway station. The segment of the railroad between Shuifu in Yunnan province and Meihua Mountain in Guizhou province is a new construction, whose total length is 357. 643 kin. In the river valley of the new part, there are a lot of poor geological phenomena mostly distributing from Shuifu to Daguan. The engineering geological problems that can influence or control the railway selecting scheme are slopes, taluses, labile rock masses, mudflows and so on. In the survey and design processing, many works had been done to study or to select the route map. The work follows the principles for the poor geologic bodies the study should be from briefness to complexity and from entirety to local. The curve cut-off, tunneling, bridging and other plans had been compared to choose the proper plan, and the selected plans are mostly using the pass-by solution in bad geologic conditions. If the pass-by is impossible in some cases, the selected plan should be advantageous to the project's stabilization and the pile, cable earth-retaining wall and other engineering methods had been used. The length of the comparing and selecting sector of total railway road is about 50 km. In the selecting railway road plan the geological factors had been considered adequately, bringing on the result that the number of changing parts of the railway is about 20 km that means the geologic factors are important in the project. The project's construction and the complete part show that geological comparing solution is reasonable in the selecting railway road processing of the river valley part, and the engineering methods are usable and effective. |
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| Keywords: | River valley part Poor geological condition Geological selecting plans Comparing Neijiang-Kunming railway |
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