Analysis Of Precipitation Schemes Of A Metro Station In Changchun

With the economic growth,people's pace of life is gradually accelerated,the common mode of transport has been unable to meet the increasingly accelerated pace of life,so the construction of urban rail transit has become the mainstream of contemporary urban construction.But with the project of urban rail transit in urban development is more and more quickly,the construction on precipitation problems also emerge in an endless stream.These problems no doubt to the construction process,quality and safety with great influence,so increase the intensity of precipitation construction quality control is very necessary.This paper Changchun Metro Line 1 station and tunnel engineering example,through the survey of regional engineering geological and hydrogeological data,understand the design of foundation pit and the surrounding environment information;comparative analysis of light well point precipitation,injection principle,dewatering and tube wells three ways of design and construction of precipitation precipitation sure;apply to the project of the precipitation scheme,pit drainage calculation,dewatering well arrangement and parameters,dewatering and drainage design and construction technology of precipitation.Through the research of this topic,we can effectively prevent and the problems of precipitation,ensure the safety of construction,reduce the loss of the project,shorten the construction period,reduce the cost of the project.