Study On Comprehensive Construction Technology Of Huangxing Road Station's Deep Well In Shanghai Metor Line M8

The use of comprehensive construction technology of metro station's deep well, control measure of importance safety and technology target in construction of Huangxing road station in Shanghai metro line M8 is introduced in detailed. In construction of metro station deep well, cut and cover method has been a well-considered method, but construction technology level is high and hidden safety trouble is big because metro station is constantly built in some area where people, building and underground line pipe is dense and condition of engineering geology is complicated. According to construction condition of Shanghai and whole country' s metro engineering these years, it is important and difficult point that building nearby and underground line pipe is protected in station construction. Construction of deep well in saturated mud stratum adds difficulty to preventing well from collapsing and protecting environment safety. The protecting structure must be constructed meticulously, construction technology of reinforce ground and well precipitation is used, theory of time-space effect, process control of excavating and propping up is strengthened, interior structure concrete is placed as quickly according to design. Thus the aim of controlling transfiguration and decreasing risk can be done.The key technology and result of construction of disphram wall and stir pile reinforce ground of Huangxing road station is studied in this article. By analysing monitoring result of deep well construction, How to using time-space effect in cut and cover method is expounded, the aim of controlling well transfiguration is done, the three aim of time limit for a project, quality and safety is done, the environment is protected effectively. At the same time, technology and result analyse of deep well precipitation and stepdown aiming to the special geology condition that the stratum of Huangxing road station is cut by old river course and two storey undertake-water act together is introduced in this article. This article has some reference value to similar internal underground works in the future.