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为适应运量增长和行车速度提高的要求,逐步以整体性、稳定性好的轨道结构代替散粒状碎石道床,以提高线路强度,铁道部第二勘测设计院科研所新型轨下基础研究组在成都铁路局自贡工务段、成都橡胶厂的协助下,开展了阴离子型再生胶乳水泥砂浆道床的试验。试验段选择在内昆线内江—宜宾段道床积水、翻浆冒泥严重的朝天门隧道出口段,长20m。该试验段处于半径600m、缓和曲线长100m的缓和曲线上,纵断面为1.4‰下坡。所在
In order to meet the requirement of increasing the traffic volume and increasing the traveling speed, the granular and granular ballast bed is gradually replaced by a monolithic and stable track structure to improve the line strength. The New Underpass Basic Research Group of the Research Institute of the Second Survey and Design Institute of the Ministry of Railways In Chengdu Railway Bureau Zigong Works section, with the help of Chengdu Rubber Factory, launched an anionic regenerated latex cement mortar bed test. The experimental section chooses the outlet section of Chaotianmen Tunnel in the section of Neijiang-Yibin section of the Neijiang-Kunming line, which has a length of 20m. The test section is on a mild curve with a radius of 600 m and a relaxation curve length of 100 m, with a longitudinal section of 1.4 ‰ downhill. Where you are