贵广铁路坪山隧道岩溶发育情况分析

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Abstract Abstract：Research purposes： According to the karst phenomenon of the Guiyang to Guangzhou railway during exploitation and construction, this paper analyzes the development of karst and the particularity, then throws out the method of the geological survey and engineering measure of construction. It will have a certain reference value for survey and construction of similar geological condition project. Research conclusions：(1)The railway should avoid the karst strongly development areas. If the railway cannot avoid the karst area, it should be made as far as possible to the typical karst micro unit area. (2)We must be make full use of the regional geological data to develop the wide area geological investigation, and adopt the comprehensive geological method to survey the geological features of the tunnel, basically make a thorough investigation about the position, altitude and the relationship between the railway and the karst pattern etc., and design the exploration point and the part of the geophysical prospecting to check the phenomenon about the karst feature. (3) For karst tunnels nearby underground river, it is necessary to survey and research its space location characters, and analyze its original and features, than predict its impact on stability of surrounding rock of tunnel by analogy. (4) It is suggested to forecast the development of karst of tunnel by combining the methods of advanced forecasting of tunnel sidewall, geological radar of tunnel base and geological drilling hole of tunnel bottom during construction.

Key words： Key words: Guiguang railway tunnel karst analysis

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	LIU Jian-guo

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LIU Jian-guo. Analysis of the Karst Development Instance for Guiguang Pingshan Tunnel[J]. 铁道工程学报, 2015, 32(4): 86-.

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2015/V32/I4/86

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