黔张常铁路岩溶区坡度方案比选研究

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摘要研究目的:黔江至张家界至常德铁路是一条客货共线、以客为主的区际干线铁路。由于沿线岩溶发育典型,工程地质构造极为复杂,工程投资大,需要对不同的坡度方案进行比选，以便确定合理的线路坡度。本文结合地形地貌、地层岩性、地质构造以及岩溶，对比13V和18V坡度方案的工程投资和工程风险，分析牵引质量、机车类型合理组合及其与相邻线协调匹配情况,并对运输质量与运营成本进行经济评价。
研究结论:通过方案比选研究得出：（1)两个坡度方案均可满足相关运营安全要求；(2)通过工程风险及工程投资分析,18V优于13V坡度方案，能降低施工难度，减少运营风险，节约运营费用，建议本线坡度采用 18V方案；（3)黔张常铁路坡度方案的比选过程，可供其他类似岩溶地区铁路坡度比选参考。

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	李金城

关键词 ：黔张常铁路, 岩溶区, 坡度方案

Abstract：Research purposes ： Qianjiang - Zhangiajie - Changde Railway is a regional trunk railway，shared by both passenger and freight trains，but mainly employed for passenger trains. Because of the typical karst development along the railways，the geological construction is very complicated， and the project investment is huge. Thus， different gradient schemes should be compared and selected，in order to determine the most reasonable gradient for the railway. Incorporated with the geological features along the railway，the project investment and risks of 13%c and 11%c gradient schemes were compared and selected. The tractive tonnage， reasonable combination of locomotive types and their compatibilities with the nearby railways were analyzed. Additionally， the transport quality and operating costs were economically evaluated. Research conclusions ： We can draw the following conclusions through comparing and selecting the schemes ： (1) The both gradient schemes meet the relevant safety requirements for operation. (2) H%c gradient scheme is better than the one of 13%c due to lower project risks and investment. Therefore， 18%c gradient scheme is recommended. (3) The process of comparison and selection of gradient schemes for Qianjiang - Zhangjiajie - Changde Railway could be employed as a reference for comparison and selection of gradient schemes of railways in karst regions.

Key words： Qianjiang - Zhangjiajie - Changde Railway karst region gradient scheme comparison and selection

收稿日期: 2015-07-08

作者简介: 李金城，1963年出生，男，教授级高级工程师，享受国务院津贴，国家有突出贡献中青年专家，现任中铁第一勘察设计院集团有限公司副院长。

引用本文:

李金城. 黔张常铁路岩溶区坡度方案比选研究[J]. 铁道工程学报, 2015, 32(9): 13-18.
LI Jin - cheng. Research on the Comparison and Selection of Gradient Schemes of the Karst Region on Qianjiang - Zhangjiajie - Changde Railway. Journal of Railway Engineering Society, 2015, 32(9): 13-18.

链接本文:

https://tdgcxb.crec.cn/CN/ 或 https://tdgcxb.crec.cn/CN/Y2015/V32/I9/13

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