瓦解是什么意思文章编号：1009-4539(2019)10-0058-05•设计咨询•
埃塞平原铁路路基排水设计的研究与思考
李杰
(中土集团福州勘察设计研究院有限公司福建福州350011)
摘要：埃塞平原地区的铁路路基排水设计时，很难引起设计人员的重视，经常会当做普通地段进行简单处理。埃塞 亚吉铁路DK129~DK230段地处冲积平原，地势平缓，气候干燥，植被稀少，线下工程完工后出现路堤水毁，水沟淤塞、毁坏，排水不畅等各种水害。以亚吉铁路的工程建设的自然特征为背景，介绍水害治理措施和整治取得效果，对埃塞 冲积平原、荒漠地区路基排水设计进行了深入研究和思考。结合亚吉铁路以及埃塞其他项目建设的成功经验，通过 对各种排水设施及辅助设施（如排水沟、挡水埝、抬高式护道、排水涵、蒸发池、排水槽等）进行论证分析之后认为：排 水沟的适用性需要进行单独论证；应阻挡外部径流降低排水沟的宣泄压力；抬高式护道用于降雨漫流、散排地区，可以保 护路堤坡免受冲刷破坏；涵洞入口应考虑设置导流堤；蒸发池具有较好的经济性和适用性；排水设施的衔接应引起重视。
高飞披萨关键词：埃塞铁路亚吉铁路冲积平原路基排水水害整治排水设施
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中图分类号：U213.151 文献标识码：A D O I： 10.3969/j.issn. 1009-4539. 2019.10.013
Rearch and Thoughts on Drainage Design of Railway Subgrade
in the Ethiopian Plain Area
经典中国象棋Li Jie
太平天国侍王府
(CCECC Fuzhou Survey and Design Institute Co. Ltd., Fuzhou Fujian 350011 , China)
A b s t r a c t：It alw ays fails to attract the attention of designers in the drainage design of railway subgrade in the Ethiopian
P lain, and it is often treated a s a sim ple ction. The D K129 〜D K230 ction of A ddis to Djbouti Railway is located in the alluvial p la in, the terrain is g en tle, the clim ate is d ry, the vegetation is sc a rc e, and various kinds of water hazards are occurred after the com pletion o f the work under tra c k, such as destroying the em bankm ent, silting up the water ch an n el，poor drainage. B ad on the natural ch aracteristics of the construction o f the A ddis to Djbouti R ailw ay, this paper introduces the effects of the m easures and rem ediation for water dam age, and conducts in-depth rearch and reflection on the floodplain drainage design in the Ethiopian alluvial plain and dert ar
ea. In com bination with the su ccessfu l experience of the construction o f the A ddis to Djbouti Railway and other projects in E th io p ia, the dem onstration and analysis are carried out for various drainage facilities and auxiliary facilities ( such as drainage d itch, water retraining d ik e, elevated berm, drainage culvert, evaporation pond and discharging tro u gh). After th a t, som e conclusions are draw n：(1)the applicability of the drainage ditch needs to be dem onstrated parately. (2)The external confluence should be blocked to reduce the disch arge pressure of the drainage ditch. (3)T h e elevated berm is suitable for the rainfall overflow and the scattered area for protecting the em bankm ent slopes from erosion dam age. (4)The diversion em bankm ent should be provided ahead of the culvert inlet. (5)There is good econom ics and applicability for the evaporation pond. (6)The connection o f drainage facilities should be taken riously.
测量学Key w o r d s：Ethiopia R ailw ay；A ddis to Djbouti R ailw ay；alluvial p la in；subgrade drainage sy ste m；rem ediation for water
d a m a g e；drainag
时间的英文e facilities
收稿日期：2019-08-01
作者简介：李杰（1987 -)，男，湖北仙桃人，工程师，主要从事路基工程设计与研究；E-mail: 1引言
亚吉铁路起点为埃塞俄比亚首都亚的斯亚贝 巴南郊瑟贝塔市，终点为吉布提那嘎达，全长约
问境
58铁道建筑技术RAILWAY CONSTRUCTION TECHNOLOGY 2019(10)
