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| The Layout Research of Hubei Railway Passage along Yangtze River |
| CHEN Wei |
| China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031，China |
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Abstract Research purposes: At present, the highway and railway constructions are booming. They both belong to transportation project, but they follow the different professional standards，so they have different working ways for the engineering geological invetisgation. In practice, it is easy to cause the confusion to make error. To discuss their geological investigation works is helpful for guiding the engineering investigation and exchanging the data.
Research conclusions: (1) In dividing the investigation stage，they are almost the same，but the highway engineering geological investigation focuses on the preliminary investigation and detailed investigation, while the railway geological investigation focuses on the preliminary investigation, location investigation and supplemental locational investigation. (2) The qualitative description is used for the surrounding rock classification of the railway tunnel along with the multiple indicator quantitative evaluation，while the quantitative evaluation-based multiple parameters method is used for the highway tunnel. Their results have a little gap. (3) There are gaps in discrimination of the unfavorable geological conditions and special rock soil，such as sand liquefaction and expansive soils. (4) There are gaps in soil classification, such as the classifications of the boundaries gravel soil particle size, the clayey soil plasticity state and the soft soil. (5) There are big gaps in evaluation of the water and soil corrosions.
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Received: 10 May 2010
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2013, Vol. 30 
