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Offshore wind power batter pile rock-socketed construction hole collapse treatment device, using method and treatment method

An offshore wind power and processing device technology, which is applied to drilling equipment and methods, wind power generation, and configuration of installation/support of wind turbines, etc., can solve problems such as ship machinery materials and personnel consumption, inability to guarantee construction progress, and increase construction difficulty. , to ensure the safety of offshore operations, convenient and fast construction, and fast construction.

Pending Publication Date: 2021-04-30
CCCC FIRST HARBOR ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Collapsed holes greatly increase the difficulty of construction, resulting in a large amount of ship machinery, materials and personnel consumption, and prolong the construction period, making it impossible to guarantee the normal construction progress

Method used

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  • Offshore wind power batter pile rock-socketed construction hole collapse treatment device, using method and treatment method
  • Offshore wind power batter pile rock-socketed construction hole collapse treatment device, using method and treatment method
  • Offshore wind power batter pile rock-socketed construction hole collapse treatment device, using method and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] The operation and construction steps of the inner casing follower 3 are as follows:

[0059] Step A, welding and fixing the center drill pipe and the upper and lower baffles together, the rollers are evenly distributed around the center drill pipe through the pin shaft, and form a combination with the center drill pipe;

[0060] Step B, connecting the central cylinder with the wing plate, the web, and the annular steel ring to form a casing pressing device, which is divided into two symmetrical parts, which are connected by flanges;

[0061] Step C, connecting the casing pressing device with the center drill pipe through the central casing, and connecting all the components together to form the inner casing follower 3;

[0062] Step D. Transport the follow-up device to the sea. The central drill pipe and the matching drill pipe 8 are lowered into the steel pipe pile 1 through screw connection, the drilling rig is started, and the center structure of the inner casing fol...

Embodiment 2

[0064] When the inclined pile collapses, the drilling rig is used to promptly raise the drill bit 4, and the steel pipe pile 1 is continuously injected with water to keep the water head in the steel pipe pile 1 higher than the sea level as much as possible to form a pressure difference and prevent further expansion of the collapsed area. The steel pipe pile 1 has a well-processed casing, and the hole collapse position is generally 1-3 meters away from the steel pipe pile 1 pile end, and the inner casing is generally 4-6 meters long. Drill down and lower the casing follower. Here, the position of the follower should be calculated in advance according to the length of the inner casing to ensure that the drill bit is always about 50cm below the inner casing during the pressing down of the inner casing. Then, start sand pumping to clear the hole. At the same time, driven by the drilling rig, the casing follower pushes down against the inner casing. The position of the inner casing...

Embodiment 3

[0066] During a drilling construction process, the hole collapsed when drilling to 45m. The designed hole depth is 47m, the steel pipe pile 1 is 38m long, the collapsed hole is at 1.2m from the end of the steel pipe pile 1, and the steel pipe pile 1 has been raised by the drill bit. Now use this method to deal with the hole collapse of offshore wind power inclined pile rock-socketed construction, and the specific construction steps are as follows:

[0067] Step 1, processing and guiding the side wall of the inner casing 2: open some small holes on the side wall of the inner casing 2, and use iron wires to vertically bind some guiding steel bars 6 to the outside of the inner casing 2 to achieve the guiding purpose. The guiding steel bars 6 are wide, The average height is 4cm, the length is 4m, the length of the inner casing 2 is 5m, and the diameter is 1.9m. Three overflow holes 7 are respectively opened at 2m and 3m from the bottom of the inner casing 2.

[0068] Step 2, the ...

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Abstract

The invention discloses an offshore wind power batter pile rock-socketed construction hole collapse treatment device, a using method and a treatment method. The device comprises a steel pipe pile (1), an inner pile casing (2), an inner pile casing follower (3) and a centralizer (5). The steel pipe pile (1) is in the shape of a cylinder with two open ends; the inner pile casing (2) is installed at the bottom of the steel pipe pile (1); the centralizer (5) and the inner pile casing follower (3) are arranged in the steel pipe pile (1); a drill rod (8) penetrates and extends into the centralizer (5) and the inner pile casing follower (3); and a drill bit (4) is installed at the end of the drill rod (8). According to the offshore wind power batter pile rock-socketed construction hole collapse treatment device, the using method and the treatment method, the inner pile casing follow-up leaking stoppage mode is adopted, so that the problem of inclined pile hole collapse is solved, and the difficulties of complex seabed rock stratum and large construction difficulty in a limited space are overcome. The device has the advantages of convenient and fast construction, good economic benefit, guarantee of offshore operation safety and the like.

Description

technical field [0001] The invention relates to the field of wind power, in particular to a device for treating collapsed holes in rock-socketed construction of inclined piles for offshore wind power, a use method and a treatment method. Background technique [0002] In recent years, with the continuous development of the wind power industry, the development and application of new technologies, new processes, and new materials, offshore wind farms are characterized by abundant resources, high power generation utilization hours, no land occupation, no water consumption, and suitable for large-scale development. Wind power is in a stage of rapid development. The high-pile cap foundation is suitable for areas with a certain water depth and shallow seabed without sufficient natural foundation conditions. Its technology is becoming more and more mature, and it has also been more and more widely used. [0003] At present, in the process of rock-socketed construction of inclined p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/40E02D17/08E02D5/28E02D37/00E02D27/42E02D27/52E21B7/00E21B17/10F03D13/25
CPCE02D5/285E02D5/40E02D17/08E02D27/425E02D27/525E02D37/00E02D2300/0029E21B7/00E21B17/1078F03D13/22F03D13/25Y02E10/72Y02E10/727
Inventor 毛以雷段晋强梁博王立锐杜瑞刚秦志凯于立娜
Owner CCCC FIRST HARBOR ENG
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