In-situ protection of pressure pipelines crossing deep foundation pits and retaining structures and construction methods
A technology for retaining structures and deep foundation pits, which can be used in infrastructure engineering, excavation, construction, etc., to solve problems such as inability to meet on-site construction and failure to achieve reinforcement effects, and to reduce the possibility of water seepage, water leakage, landslides, and thickness reduction. , the effect of good piling effect
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[0031] The present invention will be further described below in conjunction with drawings and embodiments. like figure 1A kind of in-situ protection and enclosure retaining structure for pressure pipelines crossing deep foundation pits shown, including the first-stage underground diaphragm wall 6 constructed on both sides of the in-situ protection pipeline 2, the first-stage underground diaphragm wall 6 An interruption area 5 is formed near the pipeline 2 to be protected in situ, the width of the interruption area 5 is not greater than 2.5m, and a gap greater than 0.5m is reserved between the two sections of the interruption area 5 and the pipeline 2 to be protected in situ, The underground diaphragm wall at the interrupted area is constructed by the reverse method. Before the construction, the retaining structure is constructed, and a retaining wall construction area 10 is dug outside the interrupted area 5. The width of the retaining wall construction area 10 is greater than...
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