广大线扩能改造工程改建方案研究

Research on Reconstruction Schemes for Upgrading of Guangtong-Dali Railway Line

研究目的:本文结合广大铁路(广通至大理)工程,分析扩能改造工程措施及主要技术标准,包括扩能方案、限制坡度、提速改造、速度目标值、正线数目的比选,以期对既有铁路扩能改造提供借鉴。研究结论:(1)针对既有线扩能改造工程,既有线往往都是标准低、能力小,运行速度慢,不能满足运输需求的。(2)采用"既有线扩能提速→增建第二线扩能提速→新建双线扩能提速"的思路对本项目进行系统的研究,结合沿线地形地貌、地质条件、城市规划,经技术经济比较,选择运输组织方便、点线能力协调、经济效益良好、市场竞争能力强的改建方案。(3)该研究成果可应用于指导既有铁路扩能改造工程。

Research purposes ： Combined with the upgrading of the Guangtong - Dali Railway, this paper analyzes the engineering measures and main technical standards for the upgrading project, including the comparison and selection of the upgrading schemes, ruling gradients, speed - raising upgrading, speed target value and the number of main tracks to provide the reference to the upgrading of exiting railways. Research conclusions： （ 1 ） In the upgrading projects of existing railway, the existing railway is often unable to meet the demands of transportation due to its low standards, small transportation capacity and slow running speed. （2） Based on the idea of ＂capacity expansion by upgrading the existing line-,capacity expansion and upgrading by building the second line-,capacity expansion and upgrading by building the new double - track line＂ , the systematic study was done on this project. Combined with the features of the topographical conditions, geological conditions and urban planning along the railway, an reconstruction plan suitable for the convenient transportation organization, coordination of the capacities between lines and stations and getting the good economic benefits and strong market competitive capacity was selected after making an economical and technical comparison. （3） This study results is also available for the other projects of upgrading of existing railway.