穿越东非大裂谷工程地质与线路比选分析——以内罗毕—马拉巴铁路为例

宋成辉 李伟 蒋富强 任文峰 李守定

宋成辉, 李伟, 蒋富强, 任文峰, 李守定. 2020: 穿越东非大裂谷工程地质与线路比选分析——以内罗毕—马拉巴铁路为例. 工程地质学报, 28(1): 141-148. doi: 10.13544/j.cnki.jeg.2019-287
引用本文: 宋成辉, 李伟, 蒋富强, 任文峰, 李守定. 2020: 穿越东非大裂谷工程地质与线路比选分析——以内罗毕—马拉巴铁路为例. 工程地质学报, 28(1): 141-148. doi: 10.13544/j.cnki.jeg.2019-287
SONG Chenghui, LI Wei, JIANG Fuqiang, REN Wenfeng, LI Shouding. 2020: COMPARISON AND SELECTION OF ENGINEERING GEOLOGY AND ROUTES ACROSS EAST AFRICAN RIFT VALLEY—TAKE THE NAIROBI-MALABAR RAILWAY FOR EXAMPLE. JOURNAL OF ENGINEERING GEOLOGY, 28(1): 141-148. doi: 10.13544/j.cnki.jeg.2019-287
Citation: SONG Chenghui, LI Wei, JIANG Fuqiang, REN Wenfeng, LI Shouding. 2020: COMPARISON AND SELECTION OF ENGINEERING GEOLOGY AND ROUTES ACROSS EAST AFRICAN RIFT VALLEY—TAKE THE NAIROBI-MALABAR RAILWAY FOR EXAMPLE. JOURNAL OF ENGINEERING GEOLOGY, 28(1): 141-148. doi: 10.13544/j.cnki.jeg.2019-287

穿越东非大裂谷工程地质与线路比选分析——以内罗毕—马拉巴铁路为例

doi: 10.13544/j.cnki.jeg.2019-287
基金项目: 

中国交建重大基础研究发展项目 2017-ZJKJ-08

国家科技重大专项 2016ZX05034-003

详细信息
    作者简介:

    宋成辉(1970-),男,博士,高级工程师,主要从事轨道交通结构设计工作.E-mail:729887000@qq.com

  • 中图分类号: TU354

COMPARISON AND SELECTION OF ENGINEERING GEOLOGY AND ROUTES ACROSS EAST AFRICAN RIFT VALLEY—TAKE THE NAIROBI-MALABAR RAILWAY FOR EXAMPLE

Funds: 

the CCCC Major Basic Research and Development Projects 2017-ZJKJ-08

the National Science and Technology Major Project 2016ZX05034-003

  • 摘要: 内罗毕—马拉巴铁路工程是东非“北方走廊”的重要组成部分,是非洲内陆国家发展经济的主干线。铁路线路工程穿越的东非大裂谷,地质复杂、火山地貌、断裂带和拉张裂缝等不良地质极为发育,而东非大裂谷铁路工程建设的研究资料十分匮乏。为了研究穿越东非大裂谷的铁路线路,本文首先介绍了东非大裂谷地形、地貌、裂谷的发育机理、区域断裂分布,然后以铁路沿线经济控制点为主轴,制定了穿越东非大裂谷铁路线路3大通道。分别对线路3大通道穿越的地形、地貌比选,穿越的地层、断裂和地裂缝比选,穿越地震、火山发育比选以及穿越的不良地质灾害比选,最后比选各线路通道的投资以及优、缺点,最终推荐南线通道方案。该线路方案得到肯尼亚政府的肯定和采纳。目前内马铁路正试运营,实践表明内马铁路裂谷段选线是较为成功的,可为同类工程提供借鉴。
  • 图  1  东非大裂谷Google Earth地形图

    Figure  1.  Google Earth map of the rift valley topography

    图  2  东非裂谷系板块图(Chorowicz,2005)

    Figure  2.  East African rift valley plate map(Chorowicz, 2005)

    图  3  东非大裂谷三联点结构(Chorowicz,2005)

    Figure  3.  The rift valley triad structure(Chorowicz, 2005)

    图  4  裂谷形成模式示意图

    Figure  4.  Schematic diagram of rift formation pattern

    图  5  东非大裂谷地质构造图(Zielke et al., 2009)

    Figure  5.  Tectonic map of the great rift valley (Zielke et al., 2009)

    图  6  Kedong裂谷横切剖面图

    Figure  6.  Rift cross-section map in Kedong

    图  7  内马铁路3大通道线路示意图

    Figure  7.  Schematic of Nei-Ma railway three channels

    图  8  近场区数字地形图

    Figure  8.  Near field digital topographic map

    图  9  近场区地层及断裂分布图

    Figure  9.  Stratigraphic distribution of the near field

    图  10  近场区地震震中分布图

    Figure  10.  Distribution of earthquake epicenter near field

    图  11  加速度峰值区域划分图

    Figure  11.  Division diagram of peak acceleration region

    表  1  工程量对比较表

    Table  1.   Quantity comparison table of works

    项目 中线 南线
    总线路长 525.2 km 489.57 km
    铺轨工程 正线 525.2 km 489.57 km
    站线 60.4 km 51.6 km
    路基土方 区间 5166.2×104 m3 5401.9×104 m3
    站场 899.6×104 m3 766.4×104 m3
    桥梁工程 特大桥 80座,105127.9 m 70座,84514.9 m
    大中桥 77座,24148.9 m 47座,17321.5 m
    隧道工程 小于1 km 34座,20 480 m 14座,9990 m
    1~2 km 8座,10 650 m 10座,12 690 m
    2~3 km 1座,2110 m 2座,4540 m
    3~4 km 4座,13 010 m 1座,3820 m
    大于4 km 2座,12 010 m 1座,5060 m
    桥隧合计 187.54 km 137.94 km
    工程造价 437 058.68万美元 359 788.38万美元
    下载: 导出CSV
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出版历程
  • 收稿日期:  2019-07-03
  • 修回日期:  2019-11-21
  • 刊出日期:  2020-02-25

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