电气化铁路隧道最大坡度系数研究  

Research on the Maximum Gradient Coefficient of Electrified Railway Tunnel

作　　者：易思蓉[1,2] 聂良涛[1,2] 陈彦恒[1,2] 

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]高速铁路线路工程教育部重点实验室,四川成都610031

出　　处：《中国铁道科学》2013年第6期42-48,共7页China Railway Science

基　　金：铁道部科技研究开发计划项目(2008G022-A)

摘　　要：结合我国新的铁路系统技术条件，进行电气化客货共线铁路隧道最大坡度系数研究。结果表明：在电气化客货共线铁路上，旅客列车通过隧道时，机车牵引力余量远大于隧道附加阻力，因此线路隧道最大坡度设计不受旅客列车通过条件的限制；对应不同限制坡度和牵引质量，通过选配适当机车类型，可使列车以一定的加速度余量在限制坡道上运行；sS，6K和8G型等大功率电力机车能以不低于计算速度的速度，并保有一定的加速度余量通过长大坡道上的隧道；研究得到长度为401～1000，1001～5000，5001～10000，10001～15000，15001--20000，20001--25000和25001～30000m的隧道最大坡度系数最小值分别为0．97，0．92，0．89，0．88，0．86，0．85和0．84，比现行《铁路线路设计规范》中电力牵引隧道内的最大坡度系数有所增大，而长度大于20km的隧道地段的隧道最大坡度系数与现行《铁路线路设计规范》中长度为5km隧道地段的值相当。The maximum gradient coefficients of tunnel of electrified railway for mixed passenger and freight traffic were studied considering the new technical conditions for the railway system in China. Results show that, while a passenger train runs through a tunnel of electrified railway for mixed passenger and freight traffic, the allowance of locomotive traction force is far greater than the additional resistance of tunnel. Thus, the design of the maximum gradient for railway tunnel will not be limited by the conditions of passenger train passing. For different ruling grade and tractive tonnages, a train can run up on a ruling grade with a given acceleration margin by matching some appropriate types of locomotives. High power e- lectric locomotives, such as SS7, 6K and 8G can run through tunnels on a long steep grade at the speed of no less than the calculated speed and with some acceleration margin. The minimum values for the maximum gradient coefficient of tunnels with the lengths as 401-1 000, 1 001-5 000, 5 001-10 000, 10 001 -15 000, 15 001-20 000, 20 001-25 000 and 25 001-30 000 m are 0. 97, O. 92, 0. 89, 0.88, 0.86, 0. 85 and 0.84 respectively, which are greater than those given by ＂Code for Design of Railway Line＂ for the tunnel of electrified railway. However, the maximum gradient coefficient for tunnel with the length greater than 20 km is equivalent to the one for tunnel of 5 km long defined in the current ＂Code for Design of Railway Line＂.

关 键 词：铁路 长大坡道线路 隧道最大坡度系数 

分 类 号：U212.34[交通运输工程—道路与铁道工程]