| The transportation organizing mode of multi-speed train mixed running applies to the passenger special line in China railway. Yet, to make certain the scheme of all-around maintaining sky-light in the train diagram in high-velocity and high-density train operation case greatly affects the carrying capacity and organization mode of passenger special line, and also becomes a key problem to be solved as soon as possible.During the research, the author adopted the method of uniting analogy with qualitative analysis and quantitative account to analyze the reasonable all-around maintaining sky-light scheme considering the varied working manner, traveling organizing mode, configuration of ballastless track and the passenger special line net on the basis of sufficient domestic and overseas reference. Primary study includes:(1) Summarizing maintaining experience overseas and in domestic existing railway, ascertaining the requirement of passenger special line, then bringing forward the time demand of maintaining sky-light.(2) Analyzing the characteristics of transport demand for passenger special line systematically in our country and putting forward the short-time demand of sky-light.(3) Common principle of setting up sky-light for passenger special line has been obtained from analyzing how the different sky-light forms affect organization of train operation.(4) Analyzing the characteristics of ballastless track servicing and ascertaining length of the sky-light.(5) Analyzing the train running demand of Jing-Hu high speed railway, advancing the all-around maintaining sky-light scheme and the measure to shorten the sky-light.The research shows that for the passenger special line, opening 4-6 hoursall-around maintaining sky-light from 0:00 A.M. to 6:00 A.M. in the case of ballasted track is preferred determined by the requirement of track service, 2-3 hours in the case of ballastless track determined by the requirement of catenary's service, and unilateralism tertian rectangle sky-light.The study and the conclusion of the paper have instructive significance for development of Chinese passenger special line and can be used for reference to reasonably setup sky-light. |
