Construction method of sea-land connecting section of sewage sea area discharge pipe
A construction method and connection section technology, which is applied in the construction field of the sea-land connection section of sewage discharge pipes, can solve the problems of unsuitability, high construction cost, time-consuming and laborious, etc., and achieve the goal of saving construction cost, improving construction efficiency, and reducing damage Effect
Active Publication Date: 2021-05-11
CCCC THIRD HARBOR ENG +2
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Problems solved by technology
Usually, crane ships are used for the construction of pipelines connecting sea and land. Because the draft of crane ships is relatively deep, it is not suitable for working in shallow water areas. Digging a trench suitable for the operation of the crane ship is not only time-consuming and labor-intensive, but also the construction cost is high
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[0048] The present invention will be further described below in conjunction with accompanying drawing.
[0049] see Figure 1 to Figure 11 , the construction method of the sea-land connection section of the sewage sea discharge pipe of the present invention is carried out after the land section pipeline and the sea section pipeline are laid; the tail of the land section pipeline is a beach section pipeline buried in the beach section trench, and the beach section The trench has a sea side wall, and the enclosure structure of the trench at the beach section is an occlusal pile. The periphery of the trench at the beach section is provided with a concave cofferdam that is closed to the revetment sideline; the length of the pipeline at the sea-land connection section is 44m, and the diameter is 2.8m The pipeline of the sea-land connection section is installed in the groove of the sea-land connection section and is spliced by several sections of pipe joints; the front end of the ...
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The invention discloses a construction method of a sea-land connecting section of a sewage sea area discharge pipe. The construction method comprises the following processes of installation site preparation, slide launching of a sea-land connecting section pipeline, sea hauling of the sea-land connecting section pipeline, delivery of steel buoyancy tanks and installation of the sea-land connecting section pipeline. The process of installation site preparation comprises the step of preparation of the steel buoyancy tanks, namely the two steel buoyancy tanks of the same structure are adopted and are placed in place front and back along a groove of the sea-land connecting section. The process of slide launching of the sea-land connecting section pipeline comprises the steps that 1, a pipeline splicing platform is erected; 2, pipe joints are spliced; and 3, pipeline accessories are installed. In the process of sea hauling of the sea-land connecting section pipeline, a main anchor boat and a full-rotation tug boat are adopted, and an auxiliary anchor boat is used for escorting. In the process of installation of the sea-land connecting section pipeline, installation is conducted through the two steel buoyancy tanks and cranes on the two steel buoyancy tanks. According to the construction method, time and labor are saved, and the construction cost can be reduced.
Description
technical field [0001] The invention relates to a construction method for a sea-land connection section of a sewage sea area discharge pipe. Background technique [0002] Sewage bay discharge is a form of sewage discharge in which the sewage discharge outlet is located in the bay and discharged into seawater. At present, the sewage discharge pipeline is gradually developing from the shallow sea to the deep sea. The pavement of deep sea sewage pipelines is generally long in mileage, and the paving process is difficult. [0003] The sea discharge pipe leading from the sewage treatment plant is formed by connecting the land section pipeline and the sea section pipeline. The pipeline in the land area shall be buried on land to the coast, and then connected with the pipeline in the sea area through the pipeline in the sea-land connection section. In order to realize the burial of the land-based subsea pipeline without excavation or less excavation, a non-excavation constructio...
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IPC IPC(8): E03F3/06B63B35/00
CPCE03F3/06B63B35/00
Inventor 薛宏伟林四新赖银波唐芳明苏茂森邓光晟
Owner CCCC THIRD HARBOR ENG