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Changchun High-tech District is the focus on the development of one of theregions in Changchun City, the development of a new round of strategic planning, hasbeen nearly four years since it was established in2009, has been basically completedthe laying of the planning area of56square kilometers of underground drainage line,as a startthe construction of the new city underground pipeline is particularlyimportant. The municipal pipeline rainwater pipes, sewers, water supply pipes,electrical pipes, telecommunications, pipelines, gas pipelines, heat pipe[1].Underground drain line is gravity flow pipelines the other professional pipeline(Sheung Shui, gas, heat, communications, etc.) is a pressure pipeline, and the drainline for easy contamination, leaky pipeline, so the spatial location of the drain linemust be in the lowest level. Any construction program should comply with the firstunder the rules after the underground drain line is the premise and foundation of allsupporting professional pipeline construction and municipal road network, the drainline design is reasonable or not, the pros and cons of the construction quality directlyaffects the other professional engineering construction conditions; undergrounddrainage lines also play a direct control of the vertical elevation of the road network,earthwork balance of the entire regional area play a decisive role, play a criticalimpact on the New Area development and Investment.This article is mainly for the construction of the new city underground (rainwater,sewage) pipeline construction in-depth study. Design from pre-planning to the the lateconcrete construction depth, in detail, about the principles of the catchment area bypipeline location and direction of the rules of the layout, the pipe diameter and slopecalculation method, the pipeline elevation control conditions;-depth study accordingto the different geological conditions and different diameters depth underground(rainwater and sewage) pipeline two construction methods, and actively exploreslotted construction and pipe jacking an important part of the process, objectivecomparison of the two construction methods the advantages and disadvantages of the economic benefits, the size of the project construction period, and come to aconclusion of what kind of conditions for which construction methods. In addition,the paper also analyzes the causes of the common problem of underground pipelines"road zipper phenomenon and put forward reasonable suggestions for improvement,to play a positive significance is similar to the city to put an end to the phenomenonof" road zipper.
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