艰险山区高速铁路长大坡道线路设计技术研究——以渝昆高铁高县至昭通段为例  

Research on the Design Technology of High-speed Railway Lines With Long and Steep Slopes in Tough Mountainous Areas——Cast Study of the Section from Gaoxian to Zhaotong of Chongqing-Kunming High-Speed Railway

作　　者：任志伟[1] 谢毅[1] 王维[1] 王诗[1] REN Zhiwei;XIE Yi;WANG Wei;WANG Shi(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道标准设计》2023年第7期42-50,共9页Railway Standard Design

基　　金：中铁二院工程集团有限责任公司科技开发计划项目(KSNQ201010)。

摘　　要：针对艰险山区高速铁路长大坡道线路设计问题,结合渝昆高铁高县至昭通段线路工程设计实例,从设计方案比选和长大坡道设计问题两个方面开展研究。首先,以沿线采空区分布等不良地质条件为控制线路方案走向的主要因素,同时考虑工程投资、生态敏感点、运营效益及综合开发等线位制约因素,对经筠连盐津(黄草)方案(CK)、经盐津彝良取直方案(C3K)、经盐津大关(县城)方案(C5K)、经盐津大关(天星)方案(C7K)、经筠连盐津组合方案(C9K)5个线路走向方案开展综合比选;其次,以推荐方案区段长大坡道平纵断面设计方案为基础,利用高速铁路动车组牵引计算仿真理论建立模型,对区段上坡降速、下坡安全性、区间通过能力、过分相、“天窗”时间利用情况等进行计算分析。研究表明:推荐选用相对经济合理的筠连盐津(黄草)方案;考虑山区复杂地形条件下,推荐方案的长大坡道区段各项运行性能指标均能满足实际需求。研究结果旨在为类似艰险山区高速铁路线路长大坡道设计方案提供参考。Aiming at the scheme problems of long and steep slopes route in tough mountainous areas of high-speed railway,this paper conducts researches from two aspects of design plan comparison and the design problem of the long and steep slopes with reference to the line engineering design from Gaoxian to Zhaotong section of Chongqing-Kunming high-speed railway.Firstly,the distribution of mining areas along the line and other adverse geological conditions are taken as the main factors to control the programmed route while taking account of engineering investment,ecological sensitive points,operational efficiency,comprehensive development and other line constraints.The five route programs of Junlian-Yanjin(Huangcao)program(CK),the Yanjin-Yiliang straight line program(C3K),the Yanjin-Daguan(County)program(C5K),the Yanjin-Daguan(Tianxing)program(C7K),the Junlian-Yanjin combination program(C9K)are compared for selection.Secondly,a model is established based on traction calculation simulation theory of high-speed railway and the recommended section of flat and longitudinal section design program to calculate and analyze long steep slope,up-ramp speed reduction,down-ramp safety of the section,transportation capacity,train passing through electric phase separation and maintenance time utilization.The results show that the Junlian-Yanjin(Huangcao)scheme is relatively reasonable and economical,thus the scheme is recommended.In consideration of the complex conditions in mountainous areas,the running performance indicators of the long and steep slope section of the scheme can meet the actual demands.Research results are intended to provide reference for the design scheme of long and steep slopes for similar difficult and mountainous high-speed railway lines.

关 键 词：艰险山区 高速铁路 长大坡道 线路方案 运行性能 设计 

分 类 号：U212.32[交通运输工程—道路与铁道工程] U260.1[机械工程—车辆工程] U238[交通运输工程—载运工具运用工程]