阅读说明：本技术 一种海上风电升压站钢管桩内部清泥施工工艺 (Construction process for cleaning mud in steel pipe pile of offshore wind power booster station ) 是由 裴立勤 朱军 安志才 刘仁泉 余刚 于 2020-07-08 设计创作，主要内容包括：本发明涉及一种海上风电升压站钢管桩内部清泥施工工艺,包括S1、测量钢管桩(2)内泥土深度；S2、定位气升式抽泥器；S3、吊装气升式抽泥器：在第一吊耳(61)、第二吊耳(62)、第三吊耳(63)以及第四吊耳(64)上分别设置吊绳组(65),四个吊绳组(65)的一端共同连接至起重船的吊钩(1)上,并将气升式抽泥器起吊至钢管桩(2)的预定位置,使第一导管(31)的抽泥端倾斜伸入钢管桩(2)内,直至第一导管(31)的抽泥端插入钢管桩(2)的泥面内；S4、启动输气组件(4)与输水组件(5)。本发明具有如下优点：提高抽泥效率以及抽泥彻底性,从而保证钢桩的承载力。(The invention relates to a construction process for cleaning mud in an offshore wind power booster station steel pipe pile, which comprises the following steps of S1, measuring the depth of mud in a steel pipe pile (2); s2, positioning an airlift mud extractor; s3, hoisting the airlift sludge extractor: the first lifting lug (61), the second lifting lug (62), the third lifting lug (63) and the fourth lifting lug (64) are respectively provided with a lifting rope group (65), one end of each of the four lifting rope groups (65) is connected to a lifting hook (1) of a crane ship, and an airlift mud pump is lifted to a preset position of the steel pipe pile (2), so that a mud pumping end of the first guide pipe (31) obliquely extends into the steel pipe pile (2) until the mud pumping end of the first guide pipe (31) is inserted into a mud surface of the steel pipe pile (2); s4, starting the gas transmission component (4) and the water transmission component (5). The invention has the following advantages: the mud pumping efficiency and the mud pumping thoroughness are improved, and therefore the bearing capacity of the steel pile is guaranteed.)

1. A mud cleaning construction process for the interior of a steel pipe pile of an offshore wind power booster station is characterized by comprising

S1, measuring the depth of soil in the steel pipe pile (2): measuring the depth h1 of the steel pipe pile (2) inserted into the seabed mud surface, wherein the depth is the depth of the mud in the steel pipe pile (2), the length of the steel pipe pile (2) is h2, the distance from the mud surface in the steel pipe pile (2) to the top end of the steel pipe pile (2) is h, and h = h 2-h 1;

s2, positioning an airlift mud extractor: the airlift mud extractor comprises a mud extracting pipe assembly (3), a gas transmission assembly (4), a water transmission assembly (5) and a hoisting assembly (6);

the mud pumping pipe assembly (3) comprises a first guide pipe (31), an elbow pipe (32) and a second guide pipe (33) which are sequentially connected, the length of the first guide pipe (31) is larger than h, the elbow pipe (32) is arranged between the first guide pipe (31) and the second guide pipe (33), the elbow pipe (32), the first guide pipe (31) and the second guide pipe (33) form an L-shaped structure, the inner wall of the first guide pipe (31) is provided with a plurality of guide plates (34), and the guide plates (34) spirally extend along the extension direction of the first guide pipe (31);

the air delivery assembly (4) comprises a box body (41) arranged on the first guide pipe (31), the box body (41) is communicated with the inside of the first guide pipe (31), an air delivery pipe (42) is arranged on the box body (41), and an air compressor (43) is arranged at the inlet end of the air delivery pipe (42);

the water delivery assembly (5) comprises a water delivery pipe (51) communicated with the box body (41), the inlet end of the water delivery pipe (51) is connected with a water pump (52), the water delivery pipe (51) is provided with a water delivery branch pipe (53), the outer edge of the mud inlet end of the first conduit (31) is provided with a shield cover (54), the lower end face of the shield cover (54) is provided with a plurality of water outlet nozzles (55), and the shield cover (54) is communicated with the water delivery branch pipe (53);

the hoisting assembly (6) comprises a first lifting lug (61), a second lifting lug (62), a third lifting lug (63) and a fourth lifting lug (64), the first lifting lug (61) is fixedly arranged on the first guide pipe (31), the second lifting lug (62) is fixedly arranged on the second guide pipe (33), the first lifting lug (61) and the second lifting lug (62) are coaxially arranged, the third lifting lug (63) and the fourth lifting lug (64) are positioned at two sides of the first guide pipe (31), and the third lifting lug (63) and the fourth lifting lug (64) are axially symmetrically arranged by taking the first lifting lug (61) as the center;

s3, hoisting the airlift sludge extractor: the first lifting lug (61), the second lifting lug (62), the third lifting lug (63) and the fourth lifting lug (64) are respectively provided with a lifting rope group (65), one end of each of the four lifting rope groups (65) is connected to a lifting hook (1) of a crane ship, and an airlift mud pump is lifted to a preset position of the steel pipe pile (2), so that a mud pumping end of the first guide pipe (31) obliquely extends into the steel pipe pile (2) until the mud pumping end of the first guide pipe (31) is inserted into a mud surface of the steel pipe pile (2);

s4, starting the gas transmission component (4) and the water transmission component (5): compressed air is input into the box body (41) through the air compressor (43), water is input into the box body (41) through the water pump (52), water and air in the box body (41) are mixed, the density of the mixture of the water and the air is smaller than that of water around the box body (41), pressure difference is caused, therefore, lifting force is generated on slurry in the slurry pumping device, the slurry in the steel pipe pile (2) is pumped away from the steel pipe pile (2), and the other part of water flowing out of the water pump (52) flows out of the water outlet nozzle (55) through the water conveying branch pipe (53).

2. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 1, wherein the inclination angle of the first conduit (31) is 10-15 degrees.

3. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 1 or 2, wherein the lifting rope group (65) comprises a first shackle (651), a first steel wire rope (652), a second shackle (653) and a second steel wire rope (654) which are sequentially connected, the first shackle (651) is fixedly connected with the corresponding first lifting lug (61), the second lifting lug (62), the third lifting lug (63) and the fourth lifting lug (64), and the second steel wire rope (654) is connected with the lifting hook (1).

4. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 3, wherein two adjacent second shackles (653) are connected through a third steel wire rope (655).

5. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 4, wherein the first lifting lug (61) is arranged at the lower position of the box body (41).

6. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 5, wherein the third lifting lug (63) and the fourth lifting lug (64) are arranged above the box body (41).

7. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 1, wherein the shield (54) is arranged in a diffused manner.

8. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 7, wherein the length of the baffle cover (54) is 3 times of the diameter of the first guide pipe (31).

9. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 1, wherein the thickness of the guide plate (34) is 10mm-20 mm.

10. The internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station according to claim 1, wherein the first guide pipe (31), the bent pipe (32) and the second guide pipe (33) are connected in a sealing manner.

The technical field is as follows:

the invention relates to the field of offshore wind power installation, in particular to a mud cleaning construction process inside a steel pipe pile of an offshore wind power booster station.

Background art:

the offshore booster station comprises a pile foundation, a jacket and an upper assembly, wherein the pile foundation, the jacket and the upper assembly are sequentially arranged from bottom to top, the pile foundation is vertically driven into a seabed mud surface, and the pile foundation of the offshore booster station consists of four steel piles. At present, when an offshore wind power booster station is installed and constructed, a pile foundation is generally inserted and driven into a seabed mud surface, supporting legs below a jacket are correspondingly inserted into a steel pipe pile, an upper component and the jacket are welded and fixed, after a steel pile is inserted and driven into the mud surface, the hardness of the mud surface in the steel pile is improved after the soil body is isolated from seawater within a period of time, certain pile pressing resistance is generated on the side wall of the steel pile due to mutual extrusion between the soil bodies, certain limitation is provided for secondary driving of the steel pile, and the bearing capacity of the steel pile is influenced, so that the steel pile after the first insertion driving is thoroughly cleaned with mud, at present, when the mud is cleaned with the steel pipe pile, mud is pumped by utilizing air negative pressure, air is pumped by pumping air through an air compressor to form negative pressure in the steel pipe pile so that the mud is pumped out, but when large or hard mud in the steel pipe pile exists, the mud pumping effect is poor, and the suction is insufficient so that the mud, thereby reducing the mud pumping efficiency; secondly, when the mud pumping device passes through the crane ship at the vertical hoist and mount of marine to the steel-pipe pile, it rocks to appear easily during the mud pumping device of vertical hoist and mount, make the mud pumping end of mud pumping device collide the steel-pipe pile inner wall in the steel-pipe pile, influence steel pile structural strength, when the mud pumping end of mud pumping device vertically inserts the mud face of steel-pipe pile, if the mud sediment is harder, then block up easily and take out the mud end, make and take out mud and can't continue, mud receives the lateral wall resistance of taking out the mud end when getting into vertical mud pumping end, it has great lifting force to need to take out the mud ware, otherwise take out mud not thorough.

The invention content is as follows:

the invention aims to overcome the defects and provide a construction process for removing mud in the steel pipe pile of the offshore wind power booster station, so that the mud pumping efficiency and the mud pumping thoroughness are improved, and the bearing capacity of the steel pile is ensured.

The purpose of the invention is realized by the following technical scheme: a mud cleaning construction process for the interior of a steel pipe pile of an offshore wind power booster station comprises

S1, measuring the depth of soil in the steel pipe pile: measuring the depth h1 of the steel pipe pile inserted into the seabed mud surface, wherein the depth is the depth of the soil in the steel pipe pile, the length of the steel pipe pile is h2, the distance from the mud surface in the steel pipe pile to the top end of the steel pipe pile is h, and h = h 2-h 1;

s2, positioning an airlift mud extractor: the airlift mud pumping device comprises a mud pumping pipe assembly, a gas transmission assembly, a water transmission assembly and a hoisting assembly;

the mud pumping pipe assembly comprises a first guide pipe, an elbow pipe and a second guide pipe which are sequentially connected, the length of the first guide pipe is larger than h, the elbow pipe is arranged between the first guide pipe and the second guide pipe, the elbow pipe, the first guide pipe and the second guide pipe form an L-shaped structure, the inner wall of the first guide pipe is provided with a plurality of guide plates, and the guide plates spirally extend along the extension direction of the first guide pipe;

the gas transmission assembly comprises a box body arranged on the first guide pipe, the box body is communicated with the interior of the first guide pipe, a gas transmission pipe is arranged on the box body, and an air compressor is arranged at the inlet end of the gas transmission pipe;

the water delivery assembly comprises a water delivery pipe communicated with the box body, the inlet end of the water delivery pipe is connected with a water pump, the water delivery pipe is provided with a water delivery branch pipe, the outer edge of the mud inlet end of the first guide pipe is provided with a shield cover, the lower end face of the shield cover is provided with a plurality of water outlet nozzles, and the shield cover is communicated with the water delivery branch pipe;

the hoisting assembly comprises a first lifting lug, a second lifting lug, a third lifting lug and a fourth lifting lug, the first lifting lug is fixedly arranged on the first guide pipe, the second lifting lug is fixedly arranged on the second guide pipe, the first lifting lug and the second lifting lug are coaxially arranged, the third lifting lug and the fourth lifting lug are positioned at two sides of the first guide pipe, and the third lifting lug and the fourth lifting lug are arranged in axial symmetry by taking the first lifting lug as a center;

s3, hoisting the airlift sludge extractor: the first lifting lug, the second lifting lug, the third lifting lug and the fourth lifting lug are respectively provided with a lifting rope group, one end of each of the four lifting rope groups is connected to a lifting hook of a crane ship together, and the airlift sludge pump is lifted to a preset position of the steel pipe pile, so that the sludge pumping end of the first guide pipe obliquely extends into the steel pipe pile until the sludge pumping end of the first guide pipe is inserted into a sludge surface of the steel pipe pile;

s4, starting the gas transmission component and the water transmission component: compressed air is input into the box by the air compressor, water is input into the box by the water pump, water and air in the box are mixed, the mixed density of the water and the air is less than the density of water around the box, pressure difference is caused, so that lifting force is generated on slurry in the slurry pumping device, the slurry in the steel pipe pile is pumped out of the steel pipe pile, and the other part of water flowing out of the water pump flows out of the water outlet nozzle through the water delivery branch pipe.

The invention is further improved in that: the inclination angle of the first conduit is 10-15 degrees.

The invention is further improved in that: the lifting rope group comprises a first shackle, a first steel wire rope, a second shackle and a second steel wire rope which are sequentially connected, the first shackle is fixedly connected with a corresponding first lifting lug, a corresponding second lifting lug, a corresponding third lifting lug and a corresponding fourth lifting lug, and the second steel wire rope is connected with a lifting hook.

The invention is further improved in that: and two adjacent second shackles are connected through a third steel wire rope.

The invention is further improved in that: the first lifting lug is arranged at the lower position of the box body.

The invention is further improved in that: the third lifting lug and the fourth lifting lug are arranged above the box body.

The invention is further improved in that: the shield is arranged in a diffusion mode.

The invention is further improved in that: the length of the shield is 3 times the diameter of the first conduit.

The invention is further improved in that: the thickness of the guide plate is 10mm-20 mm.

The invention is further improved in that: the first conduit, the bent pipe and the second conduit are connected in a sealing way.

Compared with the prior art, the invention has the following advantages:

the obliquely-arranged first guide pipe has a certain guiding effect on the slurry at the mud pumping end, the slurry close to the mud pumping end of the first guide pipe can quickly flow into the first guide pipe due to the self gravity effect, the end inside the steel pipe pile forms a certain degree of depression, the slurry far away from the mud pumping end of the first guide pipe can flow to the depression along with the self gravity and continuously flows into the first guide pipe along with the lifting force of the mud pumping device on the slurry, the horizontal and vertical fluidity of the slurry is improved, and the mud pumping efficiency is further improved; the mud is guided by the guide plate in the first guide pipe, so that the mud flows spirally in the first guide pipe, the fluidity of the mud is improved, the first guide pipe is prevented from being blocked by the mud, the mud pumping efficiency and the mud pumping thoroughness are improved, and the later-stage steel pile driving work is facilitated, so that the bearing capacity of the steel pile is ensured;

2. the invention simultaneously carries out water delivery and gas delivery on the box body of the mud pump, and utilizes the fact that the mixed density of the water and the gas in the mud pump is smaller than the water density around the mud pump to cause pressure difference, thereby generating lifting force on slurry in the mud pump.

Description of the drawings:

FIG. 1 is a schematic structural diagram of a gas-lift type mud extractor in the process of mud cleaning construction inside a steel pipe pile of an offshore wind power booster station;

FIG. 2 is a schematic structural diagram of a hoisting assembly in the internal mud cleaning construction process of the steel pipe pile of the offshore wind power booster station.

Reference numbers in the figures:

1-lifting hook, 2-steel pipe pile, 3-mud pumping pipe assembly, 4-gas transmission assembly, 5-water transmission assembly and 6-lifting assembly;

31-a first conduit, 32-an elbow, 33-a second conduit, 34-a guide plate;

41-box, 42-gas pipe, 43-air compressor;

51-water pipe, 52-water pump, 53-water branch pipe, 54-shield cover and 55-water outlet nozzle;

61-a first lifting lug, 62-a second lifting lug, 63-a third lifting lug, 64-a fourth lifting lug and 65-a sling group;

651-first shackle, 652-first rope, 653-second shackle, 654-second rope, 655-third rope.

The specific implementation mode is as follows:

for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

The construction process for removing mud in the steel pipe pile of the offshore wind power booster station comprises the following steps

S1, measuring the depth of soil in the steel pipe pile 2: measuring the depth h1 of the steel pipe pile 2 inserted into the seabed mud surface, wherein the depth is the depth of the mud in the steel pipe pile 2, the length of the steel pipe pile 2 is h2, the distance from the mud surface in the steel pipe pile 2 to the top end of the steel pipe pile 2 is h, and h = h 2-h 1;

s2, positioning an airlift mud extractor: the airlift mud extractor comprises a mud extracting pipe component 3, a gas transmission component 4, a water transmission component 5 and a hoisting component 6;

the mud pumping pipe assembly 3 comprises a first guide pipe 31, an elbow pipe 32 and a second guide pipe 33 which are sequentially connected, wherein the length of the first guide pipe 31 is greater than h, the elbow pipe 32 is arranged between the first guide pipe 31 and the second guide pipe 33, the elbow pipe 32, the first guide pipe 31 and the second guide pipe 33 form an L-shaped structure, the inner wall of the first guide pipe 31 is provided with a plurality of guide plates 34, and the guide plates 34 spirally extend along the extension direction of the first guide pipe 31;

the gas transmission assembly 4 comprises a box body 41 arranged on the first conduit 31, the box body 41 is communicated with the inside of the first conduit 31, a gas transmission pipe 42 is arranged on the box body 41, and an air compressor 43 is arranged at the inlet end of the gas transmission pipe 42;

the water delivery assembly 5 comprises a water delivery pipe 51 communicated with the box body 41, the inlet end of the water delivery pipe 51 is connected with a water pump 52, the water delivery pipe 51 is provided with a water delivery branch pipe 53, meanwhile, the outer edge of the mud inlet end of the first conduit 31 is provided with a baffle cover 54, the lower end face of the baffle cover 54 is provided with a plurality of water outlet nozzles 55, and the baffle cover 54 is communicated with the water delivery branch pipe 53;

the hoisting assembly 6 comprises a first lifting lug 61, a second lifting lug 62, a third lifting lug 63 and a fourth lifting lug 64, the first lifting lug 61 is fixedly arranged on the first guide pipe 31, the second lifting lug 62 is fixedly arranged on the second guide pipe 33, the first lifting lug 61 and the second lifting lug 62 are coaxially arranged, the third lifting lug 63 and the fourth lifting lug 64 are positioned at two sides of the first guide pipe 31, and the third lifting lug 63 and the fourth lifting lug 64 are axially symmetrically arranged by taking the first lifting lug 61 as the center;

s3, hoisting the airlift sludge extractor: respectively arranging a lifting rope group 65 on the first lifting lug 61, the second lifting lug 62, the third lifting lug 63 and the fourth lifting lug 64, wherein one end of each of the four lifting rope groups 65 is connected to the lifting hook 1 of the crane ship together, and the airlift sludge pump is lifted to a preset position of the steel pipe pile 2, so that the sludge pumping end of the first guide pipe 31 obliquely extends into the steel pipe pile 2 until the sludge pumping end of the first guide pipe 31 is inserted into the sludge surface of the steel pipe pile 2;

s4, starting the gas transmission component 4 and the water transmission component 5: the air compressor 43 inputs compressed air into the box body 41, the water pump 52 inputs water into the box body 41, the water and the air in the box body 41 are mixed, the density of the mixture of the air and the water is smaller than the density of the water around the box body 41, pressure difference is caused, lifting force is generated on slurry in the slurry pumping device, the slurry in the steel pipe pile 2 is pumped out of the steel pipe pile 2, and the other part of water flowing out of the water pump 52 flows out of the water outlet nozzle 55 through the water delivery branch pipe 53.

Further, the first guide pipe 31 is inclined at an angle of 10 ° to 15 °.

According to the invention, water and gas are simultaneously conveyed to the box body 41 of the mud pump, the pressure difference is generated by utilizing that the mixed density of the water and the gas in the mud pump is smaller than the water density around the mud pump, so that the lifting force is generated on the slurry in the mud pump, the water in the water conveying assembly 5 flows to the retaining cover 54 through the water conveying branch pipe 53, and the slurry in the steel pipe pile 2 is sprayed from the water outlet nozzle 55, so that the hardness of the slurry in the steel pipe pile 2 is reduced, the slurry in the steel pipe pile 2 can conveniently and rapidly flow to the mud pump assembly 3 and flow out, and the mud pumping efficiency is improved.

The steel pipe pile 2 which is inserted and installed is subjected to mud pumping work through the obliquely arranged air-lift type mud pumping device, the obliquely arranged first guide pipe 31 has a certain guiding effect on mud at a mud pumping end, the mud close to the mud pumping end of the first guide pipe 31 can quickly flow into the first guide pipe 31 due to the self gravity effect, the end inside the steel pipe pile 2 forms a certain degree of depression, and at the moment, the mud far away from the mud pumping end of the first guide pipe 31 flows to the depression along with the self gravity and continues to flow into the first guide pipe 31 along with the lifting force of the mud pumping device on the mud, so that the horizontal and vertical fluidity of the mud is improved, and the mud pumping efficiency is further improved; mud is the guide effect of deflector 34 in first pipe 31, makes mud be the spiral flow in first pipe 31, improves the mobility of mud, avoids mud to the jam of first pipe 31, improves and takes out mud efficiency and take out the thoroughness of mud, and the later stage of being convenient for is beaten the piling bar again and is worked to guarantee the bearing capacity of piling bar.

Further, the lifting rope group 65 comprises a first shackle 651, a first steel wire rope 652, a second shackle 653 and a second steel wire rope 654 which are connected in sequence, the first shackle 651 is fixedly connected with the corresponding first lifting lug 61, the corresponding second lifting lug 62, the corresponding third lifting lug 63 and the corresponding fourth lifting lug 64, and the second steel wire rope 654 is connected with the lifting hook 1.

Furthermore, two adjacent second shackles 653 are connected through a third steel wire rope 655, and the third steel wire rope 655 enables each hoisting rope group 65 to keep certain stability, so that the hoisting rope groups 65 are prevented from shaking during hoisting to influence the positioning of the airlift mud pump to the inside of the steel pipe pile 2.

Further, the first lifting lug 61 is disposed at a position below the box body 41.

Further, the third lifting lug 63 and the fourth lifting lug 64 are arranged at the upper position of the box body 41.

The position relation among the first lifting lug 61, the second lifting lug 62, the third lifting lug 63 and the fourth lifting lug 64 ensures the stability during lifting, and a certain balance degree is kept during lifting of the air-lift type mud pumping device.

Further, the baffle 54 is disposed to diffuse outward, and the baffle 54 is disposed to enlarge the water flow area.

Further, the length of the shield 54 is 3 times the diameter of the first conduit 31, further enlarging the flow area.

Furthermore, the thickness of the guide plate 34 is 10mm-20mm, the guide plate 34 has a certain guiding and drainage effect on the slurry in the first guide pipe 31, and the guide plate 34 with a certain thickness can effectively avoid the structural stability of the guide plate 34 under the impact force of the slurry.

Furthermore, the first conduit 31, the elbow 32 and the second conduit 33 are connected in a sealing manner, so that the sludge pumping efficiency is ensured.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.