高寒湿地草原区水文特性及路桥设置研究  

Hydrological Conditionsin Alpine Wetland Grassland and Configuration of Subgrade and Bridge

作　　者：吕存杰[1] Lü Cun-Jie(China Railway First Survey and Design Institute Group Ltd.,Xi’an 710043,Shaanxi,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,陕西西安710043

出　　处：《湿地科学与管理》2020年第3期17-21,共5页Wetland Science & Management

摘　　要：西宁至成都铁路大部分线路位于3000 m海拔以上的高寒地区,相继穿越若尔盖湿地和甘加湿地,生态环境非常脆弱。分析高寒湿地的水文特性,找出路基桥梁设置的分界点,减少对湿地环保区的影响是西成铁路设计亟待解决的问题。以若尔盖湿地为研究对象,阐述了高寒湿地草原区的生态功能、水文特性,以及与铁路工程设计的相互影响;并以1 km线路作为比较段落,对路基和桥梁方案进行对比分析,得出湿地草原区路桥设置的条件,并针对桥梁施工提出了一些环保防治措施。分析结论对西成铁路的工程设计具有实际指导意义。Most parts of the Xining-Chengdu Railway are located in the alpine area above 3000 m altitude.The railway passes through Ruoergai wetland and Ganjia wetland in succession,where the ecological environment is extremely fragile.It is an urgent issue to analyze the hydrological conditions of the alpine wetlands,identify locations respectively for configuration of subgrades and bridges,and reduce environmental impacts on the wetlands.Ruoergai wetland was used to describe the ecological function,hydrological conditions of the alpine wetland grassland area,and their interactions with the design of the railway;A length of 1 kilometer railway was used to carry out a comparative analysis of the subgrade and the bridge schemes,and to identify the conditions for configuring subgrade and bridge in the wetland grassland area.Some environmental protection measures were proposed for bridge construction.The study has significant practical implications for the engineering design of Xining-Chengdu Railway.

关 键 词：湿地 水文特性 路基 桥梁 对比分析 施工 

分 类 号：U442[建筑科学—桥梁与隧道工程] U412[交通运输工程—道路与铁道工程]