川藏线货物列车牵引质量主要影响因素分析

Schematic Study on Traction Quality of Sichuan-Tibet Railway

川藏线沿线地形条件困难,海拔高差起伏大,气候变化急剧,拟采用大坡度和较大站间距方案。货物列车的牵引质量需考虑地形条件、列车牵引制动性能、黏着力、车钩强度要求、客货列车速度匹配性以及对通过能力的需求等因素,经综合分析确定。对不同影响因素下货物列车牵引质量进行检算分析,从保证运输安全、满足运输需求、考虑客货列车速度匹配的角度,川藏线普速货物列车牵引质量建议采用1 500~1 800 t。

The topographic conditions along the Sichuan-Tibet Railway are difficult. It is proposed to adopt the scheme of large slope and large station spacing. The traction quality of freight trains should be determined by comprehensive analysis of topographic conditions, traction and braking performance of trains, requirements of adhesion force and coupler strength, speed matching of passenger and freight trains and need of passing capacity. The traction quality of freight trains under different influence factors is calculated and analyzed. From the perspective of ensuring transportation safety, meeting transportation demand, considering passenger and freight speed matching, the traction quality of ordinary speed freight trains is recommended to use 1 500~1 800 tons.