Covering-type silt prevention cover plate, silt prevention system and construction method of immersed tunnel gravel foundation bed
A technology for immersed tube tunnels and construction methods, which can be applied in infrastructure engineering, artificial islands, water conservancy projects, etc., and can solve problems such as failure of implantation of immersed tube joints, impact on anti-floating safety of immersed tube joints, uneven settlement, etc.
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[0030] like figure 1 and figure 2 As shown, the foundation leveling width of the crushed stone bed 5 is 42m, the thickness is 1.3m, and it is divided into 7 berths for leveling in the longitudinal direction. According to the segmented length of the subgrade bed 5 leveled, the planar size of the crushed stone subgrade bed covered anti-silting cover plate of the immersed tube tunnel of the present invention is 41m×24.3m, and 7 pieces are produced in total. The cover plate 1 includes a frame, and the frame includes longitudinal beams 3 and cross beams 4. The longitudinal beams 3 and the cross beams 4 are all box structures of steel structure. A plurality of connecting beams 6 are arranged between the longitudinal beams 3, and vertical and horizontal connecting braces 7 are arranged under the whole frame. A steel plate pavement 8 is arranged on the steel plate pavement 8, and a ballast water tank 9 of 4.925m×5.875m can be filled with water and discharged on the steel plate pavem...
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