Canal lining repair bypass pipe water delivery and cofferdam cut-off foundation pit and its construction method
A bypass pipe and channel technology, applied in the field of diversion in the construction of water conservancy and hydropower projects, can solve problems such as long water delivery channels, and achieve the effects of reducing water head, avoiding damage to uplift pressure, and achieving great social and economic benefits.
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[0033] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, they are only examples, and at the same time, the advantages of the present invention will become clearer and easier to understand.
[0034] Technical research has been carried out on the main canal of the first phase of the middle line of the South-to-North Water Diversion Project. The project adopts a trapezoidal section or a rectangular structure. The thickness of the full-section cast-in-place concrete lining slab is 8cm-10cm. The lower part of the lining slab is anti-seepage with a composite geomembrane. It is composed of layer, drainage hidden pipe (permeable hose), check valve, etc., and is representative of long-distance water delivery channels.
[0035] refer to Figure 1-2 Shown: channel lining repair bypass pipe water delivery and cofferdam cut-off type foundation pit, ch...
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