成兰铁路主要地质灾害与地质选线
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摘要
研究目的:成兰铁路位于印度板块与欧亚板块相互碰撞缝合带附近,"5.12"汶川8.0级强震导致地质灾害频发,地形地质条件呈现出典型的"四极三高"特征。通过认真分析区域地质灾害发育分布特征,结合高烈度地震山区铁路综合选线技术研究,开展地质选线研究,对拟建的地形地质条件相似的川藏、滇藏等铁路建设具有一定的借鉴意义。研究结论:成兰铁路地形地质条件极为复杂,活动断裂、高烈度地震、滑坡、崩塌、错落、岩堆、危岩落石、泥石流、采空区等构成控制线路方案的主要地质问题。地质选线定线原则为:线路应短距离、大角度以简单工程类型通过活动断裂,与活动断裂带傍行地段,应选择位于断层下盘(被动盘)并尽量远离断层;尽量绕避性质复杂、不易处理、集中分布的不良地质地段;应绕避大型采空区。选取了地质条件具有优势的西线方案、经雎水场方案、岷江左岸长隧方案。
Research purposes: The Chengdu-Lanzhou Railway is near the collision suture zone of the Indian plate and the Eurasian plate.The "5·12" 8.0 magnitude earthquake in Wenchuan caused the frequent appearance of geological disasters with features of the typical "four extreme and three high" topographical and geological conditions.Through the careful analysis of the development and distribution characteristics of regional geological hazards along the Chengdu-Lanzhou Railway and combined with the integrated railway alignment technology in high intensity earthquake mountain area,the study was done on geological alignment of the railway and it could provide the reference to the construction of the proposed Sichuan-Tibet Railway and the Yunnan-Tibet Railway with similar topographical and geological conditions. Research conclusions:The topographical and geological conditions along the Chengdu-Lanzhou Railway are very complex because of the active faults,high intensity earthquake,landslide,collapse,strewn at random,talus,dangerous rockfall,debris flow and goaf and they may be the control elements for the railway alignment.So the following principles should be followed in the railway alignment: The railway should pass the active fault with short distance and big angle by adopting the simple engineering,and for the area along the active fault,the railway should be built on the lower wall(passive wall) and kept away from the the fault as far as possible,and the railway should pass round the unfavorable geological area where the geological conditions are complex and centrally distributed and it is difficult to treat them.Also the railway should pass round the big goaf.The west line scheme,the Jushuichang scheme and the scheme of the long tunnel on the left of the Min River with better geological condition are chosen.
Research purposes: The Chengdu-Lanzhou Railway is near the collision suture zone of the Indian plate and the Eurasian plate.The "5·12" 8.0 magnitude earthquake in Wenchuan caused the frequent appearance of geological disasters with features of the typical "four extreme and three high" topographical and geological conditions.Through the careful analysis of the development and distribution characteristics of regional geological hazards along the Chengdu-Lanzhou Railway and combined with the integrated railway alignment technology in high intensity earthquake mountain area,the study was done on geological alignment of the railway and it could provide the reference to the construction of the proposed Sichuan-Tibet Railway and the Yunnan-Tibet Railway with similar topographical and geological conditions. Research conclusions:The topographical and geological conditions along the Chengdu-Lanzhou Railway are very complex because of the active faults,high intensity earthquake,landslide,collapse,strewn at random,talus,dangerous rockfall,debris flow and goaf and they may be the control elements for the railway alignment.So the following principles should be followed in the railway alignment: The railway should pass the active fault with short distance and big angle by adopting the simple engineering,and for the area along the active fault,the railway should be built on the lower wall(passive wall) and kept away from the the fault as far as possible,and the railway should pass round the unfavorable geological area where the geological conditions are complex and centrally distributed and it is difficult to treat them.Also the railway should pass round the big goaf.The west line scheme,the Jushuichang scheme and the scheme of the long tunnel on the left of the Min River with better geological condition are chosen.
引文
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[10]杜宇本,蒋良文.大瑞铁路大宝段主要工程地质问题及地质选线[J].铁道工程学报,2010(4):23-28.Du Yuben.Jiang Liangwen.Main Problems inEngineering Geology and Alignment in Dali-BaoshanSection of Dali-Ruili Railway[J].Journal of RailwayEngineering Society,2010(4):23-28.
[11]赵术升,仇详凯.大秦铁路桑干河峡谷工程地质选线[J].铁道工程地质学报,2005(z1):239-242.Zhao Shusheng,Qiu Xiangkai.Geological Alignment inthe Sangganhe River Sorge of Datong-QinhuandaoRailway Line[J].Journal of Railway EngineeringSociety,2005(z1):239-242.
[12]杨昌义,李光辉,杜宇本.汶川大地震灾区成兰铁路地质选线与工程对策[J].路基工程,2010(3):117-119.Yang Changyi,Li Guanghui,Du Yuben.GeologicalRoute Selection and Engineering Devices for Chengdu-Lanzhou Railway in Wenchuan Earthquake AffectedArea[J].Subgrade Engineering,2010(3):117-119.
[13]朱颖.复杂艰险山区铁路选线与总体设计论文集[M].北京:中国铁道出版社,2010.Zhu Ying.Essays of Railway Route Selection andGeneral Design in Complex Dangerous Mountain Areas[M].Beijing:China Railway Publishing House,2010.
[2]楚涌池,等.铁路工程地质手册[K].北京:中国铁道出版社,1999.Chu Yongchi,etc.Railway Engineering GeologyManual[K].Beijing:China Railway PublishingHouse,1999.
[3]韩毅,李隽蓬.铁路工程地质[M].北京:中国铁道出版社,1988.Han Yi,Li Juanpeng.Railway Engineering Geology[M].Beijing:China Railway Publishing House,1988.
[4]许强,黄润秋.“5.12”汶川大地震诱发大型崩滑灾害动力特征初探[J].工程地质学报,2008(6):721-729.Xu Qiang,Huang Runqiu.Kinetics Characteristics ofLarge Landslides Triggered by 5 12 Wenchuanearthquake[J].Journal of Engineering Geology,2008(6):721-729.
[5]许强,斐向军,黄润秋,等.汶川地震大型滑坡研究[M].北京:科学出版社,2009.Xu Qiang,Pei Xiangjun,Huang Runqiu,etc.LargeLandslides Study of Wenchuan Earthquake[M].Beijing:Science Press,2009.
[6]何振宁.区域工程地质与铁路选线[M].北京:中国铁道出版社,2004.He Zhenning.Regional Engineering Geology andRailway Route Selection[M].Beijing:China RailwayPublishing House,2004.
[7]卿三惠,黄润秋,李东,等.活动构造区山区山地环境铁路选线研究[J].地质力学报,2006(2):243-251.Qing Sanhui,Huang Runqiu,Li Dong,etc.RailwayLocation in a Mountainous Environment in Areas ofActive Structures[J].Journal of Geomechanics,2006(2):243-251.
[8]赵建昌,刘世忠,吉随旺.铁路选线中的工程地质问题[J].中国地质灾害与防治学报,2001(1):7-9.Zhao Jianchang,Liu Shizhong,Ji Suiwang.Engineering Geological Problems in RailwayEngineering Construction[J].The Chinese Journal ofGeological Hazard and Control,2001(1):7-9.
[9]穆藩蒲.山区铁路选线的研究[J].铁道建筑,1994(6):15-19.Mu Fanpu.Study of Railway Route in Mountain Areas[J].Railway Construction,1994(6):15-19.
[10]杜宇本,蒋良文.大瑞铁路大宝段主要工程地质问题及地质选线[J].铁道工程学报,2010(4):23-28.Du Yuben.Jiang Liangwen.Main Problems inEngineering Geology and Alignment in Dali-BaoshanSection of Dali-Ruili Railway[J].Journal of RailwayEngineering Society,2010(4):23-28.
[11]赵术升,仇详凯.大秦铁路桑干河峡谷工程地质选线[J].铁道工程地质学报,2005(z1):239-242.Zhao Shusheng,Qiu Xiangkai.Geological Alignment inthe Sangganhe River Sorge of Datong-QinhuandaoRailway Line[J].Journal of Railway EngineeringSociety,2005(z1):239-242.
[12]杨昌义,李光辉,杜宇本.汶川大地震灾区成兰铁路地质选线与工程对策[J].路基工程,2010(3):117-119.Yang Changyi,Li Guanghui,Du Yuben.GeologicalRoute Selection and Engineering Devices for Chengdu-Lanzhou Railway in Wenchuan Earthquake AffectedArea[J].Subgrade Engineering,2010(3):117-119.
[13]朱颖.复杂艰险山区铁路选线与总体设计论文集[M].北京:中国铁道出版社,2010.Zhu Ying.Essays of Railway Route Selection andGeneral Design in Complex Dangerous Mountain Areas[M].Beijing:China Railway Publishing House,2010.
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