Study On Train Operation And Passing Capacity Of Gaoligong Mountain Long Tunnel

In recent years,with the continuous acceleration of China's railway construction process,railway has become the most important mode of transportation for long-distance travel in China.As an important part of the railway line,the tunnel is often the bottleneck of the railway transportation capacity.The tunnel has the characteristics of closed,poor visual effect,difficult to cross and row the train,which increases the difficulty of the tunnel train organization.Therefore,it is of great significance to study the train organization of long tunnels and to calculate their ability.Taking the Baoshan to Mangshi section of the Gaoligongshan long tunnel as an example,the number of train crossings and rowings in the section was calculated,and the appropriate train organization mode was selected.This paper focuses on the train organization model of the Gaoligongshan long tunnel and its passing ability.Firstly,the geographical characteristics,engineering geological conditions,construction conditions and tunnel ventilation design of the Gaoligongshan long tunnel are analyzed,and a systematic understanding of the Gaoligongshan long tunnel is formed.Then,the train operation mode under the single-line and double-line operation mode is analyzed,and the calculation method of the number of train crossings and rowing is proposed.Combined with the calculation method,the optimal setting position of the row station is pointed out.Then,the ability of the single-line under different operation diagrams is analyzed.Combining the principle of single-line non-automatic blocking section and automatic blocking section subtraction coefficient,and considering the influence of tunnel ventilation,the following vehicle deduction factors are proposed in combination with the line passing ability.The calculation method calculates the line passing ability of the Baoshan to Mangshi section.At the end of the paper,the research results of the full paper are summarized,and the possible research directions in the future are prospected.