Underwater mud cleaning equipment and method for jacket pile foundation

Abstract

The invention relates to the technical field of pile foundation mud cleaning, and discloses jacket pile foundation underwater mud cleaning equipment and method.The jacket pile foundation underwater mud cleaning equipment comprises a frame structure, a mud suction pump is installed in the center of the interior of the frame structure, a mud suction port of the mud suction pump extends to the exterior of the frame structure, a mud discharge pipe is installed on the mud suction pump, and an upper mud crushing mechanism is installed on the frame structure; the mud crushing mechanism comprises a rotary reamer arranged on the lower portion of the frame structure and a stirring pump installed in the frame structure, and the rotary reamer is installed on an output shaft of the stirring pump. According to the underwater mud cleaning equipment and method for the jacket pile foundation, the mud suction pump, the mud discharge pipe, the rotary reamer and the stirring pump are arranged, the rotary reamer scatters mud through rotation and mixes the mud with seawater to form a mud-water mixture, the mud-water mixture is discharged out of a pile body through the mud suction pump and the mud discharge pipe, the mud cleaning equipment enters the pile foundation and can remove the mud at a time, and the mud cleaning process is convenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of pile foundation mud cleaning technology, in particular to a jacket pile foundation underwater mud cleaning equipment and method. BACKGROUND

[0002] With the gradual development of offshore wind power to deep sea, the application of jacket foundation is more and more widely. The jacket foundation includes underwater pile foundation and jacket body, wherein the underwater pile foundation needs to be sunk to the vicinity of the mud surface elevation, and the jacket body needs to be inserted into the underwater pile foundation, so the bottom mud inside the underwater pile foundation needs to be cleaned to ensure the smooth insertion of the jacket body, and the quality of mud cleaning is directly related to the construction quality of jacket installation and grouting connection, so the pile cleaning needs to be ensured to the design elevation, and there should be no attachment on the pile wall.

[0003] At present, the common equipment needs to crush mud first, and then put the mud pumping equipment to pump mud, and repeatedly operate until the pile soil is cleaned, which is troublesome. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a jacket pile foundation underwater mud cleaning equipment and method, which solves the problems mentioned in the background.

[0005] The present application provides the following technical scheme: a jacket pile foundation underwater mud cleaning equipment, comprising a frame structure, a mud suction pump is installed at the center of the frame structure, the mud suction port of the mud suction pump extends to the outside of the frame structure, a mud discharge pipe is installed on the mud suction pump, and an upper mud crushing mechanism is installed on the frame structure.

[0006] The mud crushing mechanism comprises a rotary reamer arranged at the lower part of the frame structure and a stirring pump installed in the frame structure, and the rotary reamer is installed on the output shaft of the stirring pump.

[0007] Preferably, a plurality of side water guns are installed on the side surface of the inner wall of the frame structure, and a bottom water gun is installed on the bottom of the inner wall of the frame structure, and the side water guns and the bottom water gun are supplied with water by a water gun pump installed on the inner wall of the frame structure.

[0008] Preferably, a lower guide is installed at the bottom of the frame structure, and an ear is installed at the top of the frame structure.

[0009] Preferably, the number of mud crushing mechanisms is 2, 3, 4 or more.

[0010] Preferably, a limiting rod is installed on the mud discharge pipe.

[0011] Preferably, the outer diameter of the frame structure is 400-500mm smaller than the pile diameter of the jacket pile foundation.

[0012] A method for underwater mud cleaning of a jacket pile foundation, comprising the following steps:

[0013] Step S1, a diver measures the mud surface elevation in the pile;

[0014] Step S2, the mud cleaning device is lowered and guided into the jacket pile foundation;

[0015] Step S3, the rotary reamer and the mud suction pump are started to clean the mud: the rotary reamer scatters the mud and mixes it with seawater to form a mud-water mixture, which is discharged by the mud discharge pipe through the mud suction pump;

[0016] Step S4, according to the designed mud cleaning elevation in the pile, the limiting rod is fixed on the mud discharge pipe, and the limiting rod touches the pile top to control the mud cleaning to the designed elevation;

[0017] Step S5, the diver checks the mud cleaning quality and re-measures the elevation;

[0018] Step S6, the device is recovered.

[0019] Preferably, in step S2, the frame structure is guided into the pile hole of the jacket pile foundation through the lower guide.

[0020] Preferably, in step S3, the device is lifted every 15 cm of cleaning depth, the side water gun is used to clean the pile wall, and the bottom water gun is used to clean the rotary reamer.

[0021] Preferably, in step S5, the diver synchronously cleans the residual attachments with the high-pressure water gun, and the camera records the image.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. By setting the mud suction pump, the mud discharge pipe, the rotary reamer and the stirring pump, the rotary reamer scatters the mud by rotating, mixes it with seawater to form a mud-water mixture, and discharges it outside the pile body through the mud discharge pipe through the mud suction pump. The mud cleaning device can clean the mud in the pile foundation at one time, and the operation is convenient during the mud cleaning process.

[0024] 2. By setting the side water gun and the bottom water gun, the bottom water gun can spray water downward to mix the mud with seawater, and at the same time, the attached mud on the rotary reamer can be cleaned, and the side water gun can spray water to the side to clean the attached mud on the pile wall, ensuring that the pile wall is free of attachments.

[0025] 3. By setting the limiting rod connected to the mud discharge pipe, when the limiting rod rests on the pile top and cannot lower the mud cleaning device, it means that the mud cleaning reaches the designed elevation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 It is a side sectional view of the present application;

[0027] Fig. 2 Fig. 1 is a schematic diagram of the top structure of the application.

[0028] In the figure: 1, frame structure; 2, suction pump; 3, mud discharge pipe; 41, rotary reamer; 42, stirring pump; 5, side water gun; 6, bottom water gun; 7, water gun pump; 8, lower guide; 9, lifting lug; 10, limiting rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0030] Please refer to Figs. 1-2 A jacket pile foundation underwater mud cleaning device, comprising a frame structure 1, a suction pump 2 is installed at the center of the frame structure 1, the suction port of the suction pump 2 extends to the outside of the frame structure 1, the suction pump 5 is used to suck mud-water mixture, a mud discharge pipe 3 is installed on the suction pump 2, the length of the mud discharge pipe 3 meets the mud cleaning elevation requirement, and the mud discharge pipe 3 is used to discharge mud-water mixture, and the frame structure 1 is provided with an upper mud breaking mechanism.

[0031] The mud breaking mechanism comprises a rotary reamer 41 arranged at the lower part of the frame structure 1 and a stirring pump 42 installed in the frame structure 1, the rotary reamer 41 is installed on the output shaft of the stirring pump 42, the rotary reamer 4 is arranged at the lower part of the frame structure 1, the frame structure 1 is provided with the stirring pump 42 for driving the rotary reamer 41, and the stirring pump 42 is used to break up the soil.

[0032] A plurality of side water guns 5 are installed on the side of the inner wall of the frame structure 1, and a bottom water gun 6 is installed on the bottom of the inner wall of the frame structure 1, the side water guns 5 and the bottom water gun 6 are both supplied with water by a water gun pump 7 installed on the inner wall of the frame structure 1, the bottom water gun 6 sprays water downward to mix the soil and clean the rotary reamer 4, and the side water guns 7 spray water to the pile wall to remove the attached soil.

[0033] A lower guide 8 is installed at the bottom of the frame structure 1, the lower guide 8 is arranged at the bottom of the frame structure 1 and is used to guide the device to be lowered into the pile, a lifting lug 9 is installed at the top of the frame structure 1, the lifting lug 8 is connected to the frame structure 1 and is used for hoisting the device, and a limiting rod 10 is installed on the mud discharge pipe 3 and is used to limit the lowering depth of the device.

[0034] In a specific embodiment, the number of mud breaking mechanisms is 2 groups, 3 groups, 4 groups or more groups.

[0035] The outer diameter of the frame structure 1 is less than the pile diameter of the jacket pile foundation by 400-500 mm.

[0036] A method for underwater mud cleaning of a jacket pile foundation, comprising the following steps:

[0037] Step S1, a diver measures the mud surface elevation in the pile;

[0038] Step S2, the mud cleaning equipment is lowered and guided into the jacket pile foundation;

[0039] Step S3, the rotary reamer 41 and the mud suction pump 2 are started to clean the mud: the rotary reamer 41 breaks up the mud and mixes it with seawater to form a mud-water mixture, which is discharged through the mud discharge pipe 3 by the mud suction pump 2;

[0040] Step S4, according to the designed mud cleaning elevation in the pile, the limiting rod 10 is fixed on the mud discharge pipe 3, and the limiting rod 10 is used to control the mud cleaning to the designed elevation by abutting against the top of the pile;

[0041] Step S5, the diver checks the mud cleaning quality and re-measures the elevation;

[0042] Step S6, the equipment is recovered.

[0043] In step S2, the frame structure 1 is guided into the pile hole of the jacket pile foundation by the lower guide 8.

[0044] In step S3, the equipment is lifted after removing 15 cm in depth, the side water gun 5 is used to clean the pile wall, and the bottom water gun is used to clean the rotary reamer 41.

[0045] In step S5, the diver synchronously cleans the residual attachments with a high-pressure water gun, and a camera records the image.

[0046] The diver measures the mud surface elevation in the pile underwater, and the measurement can be performed by a measuring rope or the like. The diver guides the mud cleaning device to the pile, and the frame structure 1 can be guided to the pile more conveniently by the lower guide during the guiding process. The rotary reamer 41, the side water gun 5, the bottom water gun 6, the mud suction pump 2 and the like are started to clean the mud in the pile. The rotary reamer 41 scatters the mud by rotating and mixes the mud with seawater to form a mud-water mixture. The mud-water mixture is discharged outside the pile by the mud suction pump 2 through the mud discharge pipe 3. The water gun pump 7 is started to supply water, and the bottom water gun 6 sprays water downward to mix the mud with seawater and clean the mud attached to the rotary reamer 41. The side water gun 5 sprays water to the side to clean the mud attached to the pile wall, so that the pile wall is ensured to be free of attachment. After cleaning the mud for 15 cm, the mud cleaning device is lifted to clean the mud attached to the pile wall by the side water gun 5 and to clean the mud attached to the rotary reamer 41 by the bottom water gun 6, so that the mud cleaning efficiency and effect are improved. According to the designed cleaning elevation of the mud in the pile, the limiting rod 10 is adjusted to the predetermined position in advance. The limiting rod 10 is connected to the mud discharge pipe 3. When the limiting rod 10 rests on the pile top and the mud cleaning device cannot be lowered, the mud cleaning is completed to the designed elevation. The diver underwater checks the mud cleaning quality and re-measures the mud cleaning elevation, and collects image data. The diver simultaneously carries the high-pressure water gun and the camera. The high-pressure water gun is used to clean the possible attachment, and the camera is used to collect the actual effect of the dredging. After the mud cleaning is completed, the mud cleaning device is recovered.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An underwater mud cleaning device for jacket pile foundation, characterized in that: The invention comprises a frame structure (1), a mud suction pump (2) is installed at the center of the frame structure (1), a mud suction port of the mud suction pump (2) extends to the outside of the frame structure (1), a mud discharge pipe (3) is installed on the mud suction pump (2), and an upper mud crushing mechanism is installed on the frame structure (1); The mud crushing mechanism comprises a rotary reamer (41) arranged at the lower part of the frame structure (1) and a stirring pump (42) installed inside the frame structure (1), wherein the rotary reamer (41) is installed on the output shaft of the stirring pump (42).

2. The underwater mud clearing equipment for jacket pile foundation according to claim 1, characterized in that: A plurality of side water guns (5) are installed on the side of the inner wall of the frame structure (1), and a bottom water gun (6) is installed on the bottom of the inner wall of the frame structure (1). Both the side water guns (5) and the bottom water gun (6) are supplied with water by a water gun pump (7) installed on the inner wall of the frame structure (1).

3. The underwater mud clearing equipment for jacket pile foundation according to claim 1, characterized in that: A lower guide member (8) is installed at the bottom of the frame structure (1), and a lifting lug (9) is installed at the top of the frame structure (1).

4. The underwater mud clearing equipment for jacket pile foundation according to claim 1, characterized in that: The number of the mud crushing mechanisms is 2, 3, 4 or more groups.

5. The underwater mud clearing equipment for jacket pile foundation according to claim 1, characterized in that: A limiting rod (10) is installed on the mud discharge pipe (3).

6. The underwater mud clearing equipment for jacket pile foundation according to claim 1, characterized in that: The outer diameter of the frame structure (1) is 400-500 mm smaller than the pile diameter of the jacket pile foundation.

7. A method for underwater mud removal of jacket pile foundation, characterized in that: The following steps are involved: Step S1, a diver measures the elevation of the mud surface inside the pile; Step S2: lowering the mud cleaning equipment and guiding the mud cleaning equipment into the jacket pile foundation; Step S3, starting the rotary reamer (41) and the mud suction pump (2) to clear mud: the rotary reamer (41) breaks up the mud and mixes it with seawater to form a mud-water mixture, which is discharged from the mud discharge pipe (3) through the mud suction pump (2); Step S4, according to the designed mud clearing elevation in the pile, the limit rod (10) is fixed on the mud discharge pipe (3), and the limit rod (10) touches the pile top to control the mud clearing to the designed elevation; Step S5: Divers check the mud removal quality and remeasure the elevation; Step S6: Recycling the equipment.

8. The underwater mud removal method for jacket pile foundation according to claim 7, characterized in that: In the step S2, the frame structure (1) is introduced into the pile hole of the jacket pile foundation through the lower guide member (8).

9. The underwater desilting method for jacket pile foundation according to claim 7, characterized in that: In the step S3: after clearing 15 cm in depth, the equipment is lifted up, the pile wall is cleaned with a side water gun (5), and the rotary reamer (41) is cleaned with a bottom water gun.

10. The underwater mud removal method for jacket pile foundation according to claim 7, characterized in that: In step S5, the diver uses a high-pressure water gun to clean the remaining attachments, and the camera records the image.

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