A construction method for super-large deep foundation pit earthwork excavation
An earthwork excavation and construction method technology, which is applied in basic structure engineering, excavation, construction, etc., can solve problems such as unfavorable stress on the supporting structure, increasing the deformation of the supporting structure, hidden dangers of construction safety, etc.
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[0016] Such as figure 1 As shown, the construction method of a kind of ultra-large deep foundation pit earthwork excavation described in the embodiment of the present invention, comprises the following steps:
[0017] 1) After the setting-out measurement of the super-large deep foundation pit is completed, six areas are divided on the plane to organize the construction, and soil ramps are set between the areas;
[0018] 2) Basin-type excavation technology is adopted in the boundary areas 1 and 3 of the foundation pit. The soil mass in the middle is constructed first, and the surrounding soil mass is excavated later. 6. Construction of slope support structure in time;
[0019] 3) Island excavation technology is adopted in the middle areas 2 and 4 of the foundation pit, and the soil in the adjacent boundary areas 1 and 3 is constructed first, and then the middle soil is excavated, and the transition with the adjacent boundary areas 1 and 3 is comprehensively considered Stabliz...
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