研究目的:广通位于云南省楚雄州，由于其地理位置的特殊性，是成昆铁路的必经据点之一，地区需沟通的径路较多，但四周地形条件困难，高差起伏大，联络线设置条件恶劣，有必要进行研究，以指导工程设计，并为类似项目提供参考。研究结论:(1)对于地区内存在新线与既有线并存的情况，首先应对其各自的功能定位与分工进行深入研究，以此作为总图方案研究的基础；(2)巧妙地利用环形联络线，可极大地缩短联络线长度，节省工程投资， 但对车站的能力及作业均有一定影响，应充分权衡利弊后选择利用；(3)引入地区方案应充分考虑既有设施和既有线路的利旧， 提升社会及经济效益；(4)地区总图方案应按照经济、实用的原则统一进行规划，相关工程根据运量增长情况适时实施，减少初期一次性投资；(5)本研究成果可应用于确定类似双“T”字形结构的地区总图方案。

Guangtong lies in Chuxiong of Yunnan Province,has special geographical location,is one of the necessary stronghold of Chengdu-Kunming Railway,has a lot of paths which should be linked up. But the surrounding terrain conditions are difficult, the level height difference is big, the setting conditions of contract line are adverse. So it is necessary to study to guide the engineering design and provide a reference for the similar project.Research conclusions:(1) For the area with new line and existing line, should first study the functions and their respective division, as the basis of general drawing program research. (2) Use of annular contact line, can greatly shorten the contact line length, save the engineering investment, but has a certain influence to the capacity and operation of the station, which should be seriously considered before select and use. (3)Area programs should take full account of the introduction of existing facilities and existing lines,enhance the social and economic benefits.(4)Area programs should be in accordance with the general plan of economic, practical principles unified planning, related projects should be timely implemented according to the traffic growth situation, to reduce the initial one-time investment. (5) The research results can be applied to area general drawing program which determines similar double "T" shaped structure.