Multi-opening hydraulic reclamation structure and method based on small-range hydraulic reclamation area

Abstract

The invention relates to a multi-opening hydraulic reclamation structure based on a small-range hydraulic reclamation area, which comprises a hydraulic reclamation pipeline in which main hydraulic reclamation pipe openings are formed at intervals. An auxiliary hydraulic reclamation pipe opening is formed between adjacent main hydraulic reclamation pipe openings. Main gate plates are installed on the main hydraulic reclamation pipe openings of the hydraulic reclamation pipeline, and an auxiliary gate plate is installed on the auxiliary hydraulic reclamation pipe opening of the auxiliary hydraulic reclamation pipe opening. A multi-opening hydraulic reclamation method includes the steps that 1) the hydraulic reclamation area comprising a reclamation dam and a drain opening is arranged; 2), an initial hydraulic reclamation region is determined; 3), the beach face slope ratio is measured in real time in the hydraulic reclamation process; 4), the auxiliary hydraulic reclamation pipe opening is formed between the adjacent main hydraulic reclamation pipe openings; 5), the main hydraulic reclamation openings are used one by one according to practical conditions on the field, and the elevation is measured after beach faces of the bottoms of the adjacent two main hydraulic reclamation pipe openings are formed; 6), the flow of all the main hydraulic reclamation pipe openings and the auxiliary hydraulic reclamation pipe opening is inversely estimated according to the hydraulic reclamation fill amount required by the positions near the pipe openings; and 7), the hydraulic reclamation fill amount of the hydraulic reclamation pipe openings is set according to the flow. The hydraulic reclamation loss volume is effectively reduced, accumulation of hydraulic reclamation soil on the outer side of the drain opening of the hydraulic reclamation area is reduced, and the environment-friendly effect on the periphery of the hydraulic reclamation area is improved.

Description

technical field [0001] The invention belongs to the field of dredging and reclamation engineering, and in particular relates to a construction method for improving the working efficiency of ships, reducing loss and controlling the flatness of dredging and filling by adopting multi-port dredging and filling for small-scale dredging and reclamation areas. Background technique [0002] At present, the dredging reclamation project has been widely used in the construction projects of land reclamation. Specifically, dredgers are used to excavate the soil from the designated mud extraction area and transport it to another designated dredging reclamation area. When the reclamation area is 10 When the average thickness of the dredging mud layer is 2m to 5m, the following problems often arise in the construction method of gradual dredging with a conventional single nozzle: 10,000 square meters to 1 million square meters: [0003] 1. In the late stage of dredging reclamation, the avera...

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Problems solved by technology

[0003] 1. In the late stage of dredging reclamation, the average elevation of the mud surface in the dredging reclamation area is close to the design elevation. At this time, the mud-water mixture in the dredging reclamation area is not fully settled and flows out directly through the discharge port, resulting in an increase in the dredging reclamation loss.

[0004] 2. Affected by the plane shape and soil conditions of the dredging reclamation area, the radiation area of ​​each nozzle is limited. Generally, the radiation is carried out according to a certain beach slope ratio. When the bottom of the nozzle reaches the design elevation, at this time the two adjacent nozzles The elevation between the mouths is often lower than the design elevation

[0007] 2. For the problem of different differences in mud surface elevation in the dredging reclamation area, at present, it can only be solved by enlarging the dredging and filling nozzles and carrying out dredging and filling construction one by one, but this method is easy to appear in the later stage of dredging and filling The situation of reversing the nozzle back and forth reduces the production efficiency of the ship to a certain extent, and indirectly leads to the extension of the total construction period

[0008] Obviously, adopting the above-mentioned traditional solutions will lead to low working efficiency of the ship, high post-fill loss, long construction period, and high overall project cost

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