Seaborne immersed tube of sewage sea area discharge tube and underwater installation construction method
A construction method and discharge pipe technology, applied in the direction of pipes/pipe joints/fittings, pipe elements, flange connections, etc., can solve the problems of difficult paving process and long mileage
Active Publication Date: 2021-04-30
CCCC THIRD HARBOR ENG +2
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Problems solved by technology
The pavement of deep sea sewage pipelines generally has a long mileage, and the paving process is difficult
Method used
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[0041] The present invention will be further described below in conjunction with accompanying drawing.
[0042] see Figure 1 to Figure 8 , the marine immersed pipe and underwater installation and construction method of the sewage sea area discharge pipe of the present invention are used to install successively six sections of 290m long and 2.8m discharge pipes and a discharge head from the sea side to the shore side; the discharge head includes The pipe diameter gradually decreases from the rear 2.8m to the 1.2m diffuser pipe. The length of the diffuser pipe is 94m and it is vertically connected to seven riser pipes with a pipe diameter of 0.8m through tees at intervals. The top of each riser pipe Five duckbill valves are evenly distributed, and the front end of the diffusion pipe is also connected to a flushing pipe with an inclination of 45° and a pipe diameter of 0.8m (see figure 1 ).
[0043] Construction method of the present invention comprises the following steps:
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The invention discloses a seaborne immersed tube of a sewage sea area discharge tube and an underwater installation construction method. The underwater installation construction method comprises the following steps: step1, digging a foundation trench on a seabed along the installation position of the tube, and respectively digging a joint installation groove downwards on the bottom surface of the foundation trench corresponding to the butt joint position of each section of tube; step 2, hooking a section of tube by a large crane ship and a small crane ship which are parked at the position of the immersed tube, and leaning the tube against a positioning pile; step 3, dismounting blind plates blocking the two ends of the tube; step 4, immersing the tube into water through the large crane ship and the small crane ship; step 5, after the height difference between the two ends of the tube is smaller than a set distance by adjusting the loosening speed of the large crane ship and the small crane ship, immersing the tube into a cushion layer of the foundation trench; and step 6, removing hooks between the large crane ship and the tube and between the small crane ship and the tube, and then immersing the next section of tube into water and performing installation. By means of the construction method, each section of discharge tube can be safely and stably sunken into the seabed and installed.
Description
technical field [0001] The invention relates to an offshore immersed pipe for a discharge pipe in a sewage sea area and an underwater installation and construction method. 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. The sewage discharge pipeline is an important part of the urban sewage treatment project. In order to improve the sewage disposal capacity of coastal cities, protect marine resources and the environment, promote the sustainable development of the marine economy, and reduce the pollution of sewage to the marine environment, the sewage discharge pipeline is composed of The shallow sea gradually develops into the deep sea. The pavement of deep sea sewage pipelines generally has a long mileage, and the paving process is difficult. The choice of paving technology determines the success or failure of the project construction. [0003] The sea...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16L1/16F16L1/20F16L23/024F16L23/00F16L57/00F16L55/00F16J15/10E02D15/06
CPCF16L1/161F16L1/20F16L1/205F16L23/024F16L23/003F16L57/00F16L55/00F16J15/10E02D15/06
Inventor 唐芳明林四新赖银波薛宏伟何淼鑫林靖伟
Owner CCCC THIRD HARBOR ENG