A second-order ecological slope protection and its construction method
A technology of ecological slope protection and construction method, which is applied in the direction of coastline protection, shore wall, sea area engineering, etc., can solve the problems of unfriendly environment of hard revetment, lack of size design method, difficult transformation, etc., so as to avoid the occurrence of black and odor problems, reduce Project construction budget, the effect of reducing the outbreak of environmental problems
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Embodiment 1
[0043] Such as figure 1 , figure 2 As shown, when reconstructing the original hardened bank slope, firstly determine the primary pollutant in the river basin and the length of the river section that needs hardened bank slope reconstruction. According to the previous survey data, it is determined that the primary pollutant in the area is total nitrogen, and the total daily discharge is 1000g, and the length of the regional governance river section is 1000m. Generally, urban rivers are used as landscape water and irrigation water. It is determined that the water quality of the river should reach Class IV water quality. With reference to the national surface water quality standard GB3838-2002, the limit concentration of total nitrogen in the environment is 1.5mg / L, and the total amount of primary pollutants discharged in the area Divide 1000g by the limit concentration of pollutant total nitrogen in the environment of the national surface water quality standard 1.5mg / L, and the...
Embodiment 2
[0047] In the engineering scheme that needs to be completely demolished and rebuilt, the scheme measures that meet the requirements of the hydraulic maximum cross section are adopted, that is, the minimum surface area of the water section is used to meet the maximum water flow, and the trapezoidal cross section is required to be a semicircle. Cut the polygon, the angle between the upper bottom and the waist is 60°. During the rebuilding process, the primary pollutant and the length of the river section were determined. According to the previous survey data, the primary pollutant in the area was determined to be total phosphorus, the total daily discharge was 300g, and the length of the river channel for regional governance was 1000m. Generally, urban rivers are used as landscape water and irrigation water. It is determined that the water quality of the rivers should reach Class IV water quality. With reference to the national surface water quality standard GB3838-2002, the li...
Embodiment 3
[0054] In the project plan that needs to be completely demolished and rebuilt, according to the topography of the local bank slope, the angle between the upper bottom and the waist is selected to be 70°. During the rebuilding process, the primary pollutant and the length of the river section were determined. According to the previous survey data, the primary pollutant in the area was determined to be total phosphorus, the total daily discharge was 300g, and the length of the river channel for regional governance was 1000m. Generally, urban rivers are used as landscape water and irrigation water. It is determined that the water quality of the rivers should reach Class IV water quality. With reference to the national surface water quality standard GB3838-2002, the limit concentration of total phosphorus in the environment is 0.3mg / L. Divide the amount of 300g by the limit concentration of pollutant total phosphorus in the environment of the national surface water quality standard...
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