Abstract：In the research works on electrification reform engineering project of Tianjun-Qinhuangdao-Shenyang Railway, there were multi-opinions concerned with the problem having the necessity of reform the down direction system at Shanhaiguan Station for enlarging its capacity or not. From several aspects concerned with traffic organization, formation of car flow, capacity of station，etc, the paper analyzes the existing problems in which the down direction system should not be reformed and its solving scheme，so as to explain the necessity of its reform.
牛会想. 山海关站下行系统改造的必要性分析[J]. 铁道工程学报, 2002, 19(4): 5-11.
NIU Hui-xiang. ANALYSIS ON NECESSITY OF REFORM OF RAILWAY DOWN DIRECTION SYSTEM AT SHANHAIGUAN STATION. Journal of Railway Engineering Society, 2002, 19(4): 5-11.
2002, Vol. 19 
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