Modular biological permeable dam and construction method thereof
A permeable dam, modular technology, applied in chemical instruments and methods, biological water/sewage treatment, hydraulic engineering, etc., can solve problems such as easy collapse, achieve simple and convenient construction, simple connection, and increase the effect of contact area
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Embodiment 1
[0040] Such as Figures 1 to 6 As shown, the modular biological permeable dam of the present embodiment includes a dam structure formed by stacking several net cage monomers 1, and the net cage monomer is a mesh box structure formed by steel wires through mechanical processes. The net cage monomer is filled with dam stones with a particle size of 8 to 25 cm and microbial carriers with a particle size of 6-10 cm. The microbial carrier is filled in the middle of the net cage monomer, and the dam stones 21 and microbial carriers 22 are filled around the microbial carrier. The filling volume is 20% of the overall volume of the cage monomer.
[0041] The unit structure of the permeable dam is a box-shaped structure made of high-corrosion-resistant, high-strength, ductile low-carbon steel wire or the above-mentioned steel wire coated with PVC, which is machine-woven. The diameter of the low carbon steel wire used varies according to the engineering design requirements. Generally b...
Embodiment 2
[0044] In this embodiment, on the basis of embodiment 1, the modular biological permeable dam of this embodiment includes a first unit structure and a second unit structure, wherein the first unit structure is a right-angled trapezoid, and the second unit The structure is rectangular; the first unit structure and the second unit structure are stacked into several rows in the direction of water flow, and several layers are stacked in the upper and lower directions of the river, and the second unit structure is stacked upwards from bottom to top To form the water-facing surface, the back-water surface is formed by stacking the first unit structure in a descending manner from bottom to top.
[0045]In this embodiment, the ecological permeable dam is installed layer by layer, wherein the upstream surface is installed vertically upwards, and the backwater surface is installed layer by layer in a descending manner, and the first unit structure is installed on the backwater surface to...
Embodiment 3
[0055] The construction method of the modular biological permeable dam of this embodiment includes:
[0056] The selected river course or pond shall be dredged (cofferdam construction), the river bottom shall be compacted and leveled, and then piled up according to the design parameters (geometric size, gravel gradation) of the ecological permeable dam, and the slope coefficient of the trapezoidal structure dam slope 1:1-1:2.5.
[0057] (1) Alignment outside the bottom edge of the river bed
[0058] According to the construction drawings combined with the actual river bed geology and the island building edge, the base edge is actually measured and set. In order to ensure the beauty of the slope protection project, the base line should be as straight as possible.
[0059] (2) Base excavation
[0060] Clean up the alluvial sand and virtual slag at the bottom of the river bed, excavate the base platform and level and compact it to make the base roughly flat and stable, and lar...
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