CN114837235A - Construction method for protecting seabed bionic tree - Google Patents
Construction method for protecting seabed bionic tree Download PDFInfo
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- CN114837235A CN114837235A CN202210457888.6A CN202210457888A CN114837235A CN 114837235 A CN114837235 A CN 114837235A CN 202210457888 A CN202210457888 A CN 202210457888A CN 114837235 A CN114837235 A CN 114837235A
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- bionic
- tree
- underwater robot
- construction
- bionic tree
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/727—Offshore wind turbines
Abstract
The invention discloses a construction method for protecting a seabed bionic tree, which comprises the following steps: determining the number and the positions of the bionic trees according to the size of the offshore wind power foundation and the area of a bionic tree protection area, wherein the determined bionic tree arrangement needs to completely cover the periphery of the foundation and a certain margin is reserved; setting a construction route of the underwater robot in advance according to the position of the bionic tree; and (4) putting the underwater robot, dragging and carrying the bionic tree by the underwater robot, and sowing the bionic tree along the set route and the set sowing area. According to the method for sowing the bionic trees, the number and the positions of the bionic trees are determined according to the size of the offshore wind power foundation and the area of the bionic tree protection area, the bionic trees are put in more accurately, and the wind power foundation achieves a more comprehensive anti-scouring effect through reasonable positions; the bionic tree is a single body, the underwater robot drags and carries the bionic tree for operation, the requirement of a large construction ship is eliminated, and the installation cost is reduced; the underwater robot advances according to the established route, and the bionic tree is sown at the established arrangement point position, so that the errors are reduced.
Description
Technical Field
The invention belongs to the technical field of offshore wind power foundation scour prevention, and particularly relates to a construction method for protecting a seabed bionic tree.
Background
The development speed of offshore wind power is rapid, and the trend of large-scale organic units, large-scale wind farms and development of wind farm positions to open sea is achieved. The offshore wind power foundation is influenced by scouring for a long time, and a soil body structure near the foundation is easy to damage, so that the safety of the foundation is influenced.
The operation and maintenance cost of offshore wind power in open sea is high, and a protection scouring measure is needed to reduce the operation and maintenance cost. The existing protection scouring method mainly comprises two types of entity scouring protection and deceleration non-scouring protection. In the entity anti-impact protection, the rigidity of materials such as riprap, concrete and the like is far higher than that of seabed soil, so that the problem of more serious protection scouring than basic scouring, namely 'secondary scouring' can be caused; the problem of non-durable protection effect exists when the speed is reduced and the impact protection is not carried out, and the maintenance cost is high.
The offshore wind power foundation protection is generally to actively bury the scoured pit, the material volume is larger than the scoured pit, the installation cost is high, a barge provided with a large crane is required to be correspondingly installed, and meanwhile, the requirement on the offshore environment is high, and the operation cannot be carried out in the heavy storm environment. Therefore, the simple protection construction method has important significance for the efficient operation of offshore wind power engineering.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a construction method for protecting a seabed bionic tree, which comprises the following steps:
s1, determining the number and the positions of the bionic trees according to the size of the offshore wind power foundation and the area of the bionic tree protection area;
s2, setting a construction route of the underwater robot in advance according to the bionic tree position in the step S1;
and S3, throwing the underwater robot, and sowing the bionic tree by the underwater robot along the set route and the set sowing area according to the set program.
Further, in step S1, if the small-sized offshore wind power foundation is used, the small area is provided with the bionic tree protection area, a small number of bionic trees are provided, and the bionic trees are intensively arranged at the front and rear positions of the incident flow surface;
for a large offshore wind power foundation, a large-area bionic tree protection area is arranged, the number of the bionic trees is greatly increased, and the bionic trees are annularly arranged around the foundation for multiple circles and multiple points and are uniformly spread.
Further, in step S1, for the small offshore wind power foundation, the underwater robot is launched at the position in front of the incident surface as a launching point of the underwater robot, the underwater robot performs construction around the offshore wind power foundation for one circle, and the underwater robot is recovered at the position behind the incident surface as a recovery point of the underwater robot;
for a large offshore wind power foundation, the underwater robot is thrown in as a throwing point of the underwater robot at the front position of the incident flow surface, the underwater robot is constructed around the offshore wind power foundation in a ring shape for multiple circles, and the underwater robot is recovered as a recovery point of the underwater robot at the rear position of the incident flow surface.
Further, the method requires a plurality of constructions including filling construction and allowance construction, and specifically includes the following steps:
the filling construction is mainly to fill the generated scoured pits, the range of the next construction and the using amount of the bionic tree are both larger than those of the previous construction, and after the seabed around the foundation is restored to the height of the original seabed, the filling construction is finished;
and the surplus construction is the construction performed after the filling construction is finished, so that surplus silted soil is generated around the foundation, the construction range of the next time and the usage amount of the bionic tree are required to be smaller than those of the previous time, the height of the seabed around the foundation is increased to have a certain safety margin, and the surplus construction is finished.
Further, the bionic tree is a bionic tree monomer.
Specifically, the bionic tree monomer comprises a base body and a bionic tree strip, a through hole is formed in the base body, a fixing pad is arranged at the bottom of the base body, the bionic tree strip and the fixing pad are of flexible structures, and the bottom of the bionic tree strip is sewn and fixed with the fixing pad after penetrating through the through hole of the base body.
Furthermore, a water-soluble layer is coated outside the bionic tree.
Compared with the prior art, the invention has the following advantages: the number and the positions of the bionic trees are determined according to the size of the offshore wind power foundation and the area of a bionic tree protection area, so that the bionic trees are put in more accurately, and the wind power foundation can be more comprehensively scour-proof due to reasonable positions; compared with the traditional protection measures, the underwater robot saves the requirement of a large construction ship in the operation, has low requirement degree on the environment of a field area, greatly increases the operation time in the sea and reduces the installation cost; the underwater robot advances according to a set route, a bionic tree is sown at a set arrangement point position, a program is set in advance, and errors are reduced; the bionic trees are single bodies, and the underwater robot is favorably carried by coating the water-soluble layer before throwing, so that a plurality of bionic trees can be carried at the same time, the operation time is shortened, the operation cost is reduced, and the operation speed is reduced; the bionic tree is small in size, low in material cost, low in requirement on large equipment for a construction process, high in single construction speed, low in construction difficulty and low in overall construction cost.
Drawings
FIGS. 1 and 2 are schematic diagrams of a first embodiment of the present invention;
FIGS. 3 and 4 are schematic views of a second embodiment of the present invention;
5-9 are schematic views of the foundation scour pit and seabed after multiple protections of the present invention;
FIG. 10 is a schematic diagram of a bionic tree structure according to the present invention.
In the figure: good-pile leg foundation; x-bionic tree throwing point location; → in the direction of flow.
Detailed Description
The invention will be further explained with reference to the drawings.
The invention provides a construction method for protecting a seabed bionic tree, which comprises the following steps: determining the number and the positions of the bionic trees according to the size of the offshore wind power foundation and the area of a bionic tree protection area, wherein the determined bionic tree arrangement needs to completely cover the periphery of the foundation and a certain margin is reserved; setting a construction route of the underwater robot in advance according to the position of the bionic tree; and (4) putting the underwater robot, dragging and carrying the bionic tree by the underwater robot, and sowing the bionic tree along the set route and the set sowing area. Specifically, the outer cladding of bionical tree is provided with water-soluble layer, and bionical tree is in two to three days after putting in, and the water-soluble layer of parcel bionical tree is automatic to be dissolved, and bionical tree begins the guard action.
The bionic tree is preset to be connected end to end in an annular shape around the foundation, the wind power foundation is protected in an all-dimensional mode, and the underwater robot is used for sowing seeds on the carrier.
As shown in the embodiment of fig. 1-2, the offshore wind power foundation is small, the area of the bionic tree protection area is small, and the position of the bionic tree and the advancing route of the underwater robot are set when only a small amount of anti-scouring bionic trees are needed. The bionic trees are concentrated in the front and the back of the upstream, the working route of the underwater robot is a circle around the base, the underwater robot is sent and recovered at the first and the last bionic tree throwing points, as shown in figure 2, the underwater robot is thrown from a point B, the underwater robot seeds the bionic trees around the base circle according to the point B, and the underwater robot is recovered after the bionic trees are sowed at the point A.
In the embodiment shown in fig. 3-4, the offshore wind power foundation is large, the area of the bionic tree protection area is large, the positions of the bionic trees are set and the advancing route of the underwater robot is needed to sow a large number of bionic trees, the bionic trees are arranged around the foundation in a ring shape in multiple circles and multiple points and are spread evenly, points a and B in the drawing are a throwing point of the underwater robot, and the other point is a recovery point of the underwater robot, namely a first bionic tree sowing point and a last bionic tree sowing point.
When the bionic tree sowing quantity measuring device is used, the bionic tree sowing quantity is measured and calculated according to the specific field environment, and the principle is that the more severe the sea condition is, the more the distribution quantity is. The seeding arrangement position of the bionic trees is set, and the bionic trees are arranged on the upstream side under the condition of small quantity of the required bionic trees so as to save the cost; the large number of bionic trees is needed, which indicates that the sea condition is severe, and the bionic trees need to be uniformly arranged to ensure the safety.
Fig. 5-9 show the condition of the foundation scour pit and the seabed after multiple times of protection, fig. 5 is a description of the environment of the foundation scour pit and the seabed before protection construction, fig. 6 is protection arrangement for first filling construction, fig. 7 is protection arrangement for second filling construction, fig. 8 is protection arrangement for excess construction, and fig. 9 is the foundation protection result after excess construction is completed. The construction method for protecting the seabed bionic tree needs to be divided into multiple protection constructions, after each protection construction, the bionic tree can deposit sediment with certain thickness after a certain time, and the protection construction comprises filling construction and allowance construction, and specifically comprises the following steps:
filling construction, namely filling the generated scoured pits, wherein the range of the next construction and the using amount of the bionic tree are both larger than those of the previous construction, and after the seabed around the foundation is restored to the original seabed height, the filling construction is finished;
and the surplus construction is the construction performed after the filling construction is finished, so that surplus silted soil is generated around the foundation, the construction range of the next time and the usage amount of the bionic tree are required to be smaller than those of the previous time, the height of the seabed around the foundation is increased to have a certain safety margin, and the surplus construction is finished.
Specifically, a certain time is required to be spaced for each protection construction, and the bionic tree can be guaranteed to deposit sediment with a certain thickness.
The bionic tree has the action mechanism of disturbing water flow and blocking sediment particles to form siltation with a certain height, so that the protection effect is generated. The scouring damages the soil around the foundation, and the bionic tree can increase the soil around the foundation so as to effectively resist the scouring phenomenon.
As shown in fig. 10, the bionic tree is a single bionic tree, and the single bionic tree includes a base and a bionic tree strip fixed on the base. Preferably, a through hole is formed in the base body, a fixing pad is arranged at the bottom of the base body, the bionic tree strip and the fixing pad are of flexible structures, and the bottom of the bionic tree strip is sewn and fixed with the fixing pad after the bionic tree strip penetrates through the through hole of the base body. The outer cladding of bionical tree monomer is provided with water-soluble layer, is for the convenience of carrying of underwater robot, because the bionical treetop of bionical tree is scattered under normal condition, inconvenient transportation just can form a block form after wrapping up through water-soluble layer, and the transportation and the transport of being convenient for, after bionical tree was put in water, water-soluble layer dissolved, alright expansion becomes normal condition.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A construction method for protecting a seabed bionic tree is characterized by comprising the following steps:
s1, determining the number and the positions of the bionic trees according to the size of the offshore wind power foundation and the area of the bionic tree protection area;
s2, setting a construction route of the underwater robot in advance according to the bionic tree position in the step S1;
and S3, throwing the underwater robot, and sowing the bionic tree by the underwater robot along the set route and the set sowing area according to the set program.
2. The method according to claim 1, wherein in step S1, if the small offshore wind power foundation is used, the small area is provided with a bionic tree protection area, a small number of bionic trees are provided, and the bionic trees are intensively arranged at front and rear positions of the incident flow surface;
for a large offshore wind power foundation, a large-area bionic tree protection area is arranged, the number of the bionic trees is greatly increased, and the bionic trees are annularly arranged around the foundation for multiple circles and multiple points and are uniformly spread.
3. The method of claim 2, wherein in step S1, for a small offshore wind power foundation, the underwater robot is launched as a launch point of the underwater robot at a position in front of the windward side, the underwater robot is constructed around the offshore wind power foundation for one circle, and the underwater robot is recovered as a recovery point of the underwater robot at a position behind the windward side;
for a large offshore wind power foundation, the underwater robot is thrown in as a throwing point of the underwater robot at the front position of the incident flow surface, the underwater robot is constructed around the offshore wind power foundation in a ring shape for multiple circles, and the underwater robot is recovered as a recovery point of the underwater robot at the rear position of the incident flow surface.
4. The construction method for protecting the seabed bionic tree as claimed in claim 3, wherein the method requires most constructions including filling construction and allowance construction, and comprises the following specific steps:
the filling construction is to fill the generated scoured pit below the seabed, the range of the next construction and the using amount of the bionic tree are both larger than those of the previous construction, and the filling construction is finished after the seabed around the foundation is restored to the original seabed height;
the residual construction is performed above the seabed and after the filling construction is finished, residual soil is generated around the foundation, the construction range of the next time and the usage amount of the bionic tree are required to be smaller than those of the previous time, the height of the seabed around the foundation is increased to have a certain safety margin, and the residual construction is finished.
5. The method for constructing the protection of the seabed bionics tree as claimed in any one of claims 1 to 4, wherein the bionics tree is a bionics tree monomer.
6. The method according to claim 5, wherein the bionic tree comprises a base and a bionic tree strip, the base has a through hole, the bottom of the base has a fixing pad, the bionic tree strip and the fixing pad are flexible, and the bottom of the bionic tree strip is sewn and fixed to the fixing pad after passing through the through hole of the base.
7. The method of claim 6, wherein the bionic tree is covered with a water-soluble layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210457888.6A CN114837235A (en) | 2022-04-28 | 2022-04-28 | Construction method for protecting seabed bionic tree |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210457888.6A CN114837235A (en) | 2022-04-28 | 2022-04-28 | Construction method for protecting seabed bionic tree |
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| CN114837235A true CN114837235A (en) | 2022-08-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120055390A1 (en) * | 2010-08-31 | 2012-03-08 | Atlas Elektronik Gmbh | Unmanned underwater vehicle and method for operating an unmanned underwater vehicle |
| CN106869190A (en) * | 2017-04-17 | 2017-06-20 | 中山市华蕴新能源科技有限公司 | underwater anti-scouring protection method and device |
| CN209786750U (en) * | 2019-01-14 | 2019-12-13 | 中国南方电网有限责任公司超高压输电公司广州局 | submarine cable scour prevention device combining bionic aquatic plants and cement chain quilt |
| CN213448545U (en) * | 2020-07-22 | 2021-06-15 | 广东华蕴新能源有限公司 | Offshore wind power foundation concrete block with bionic grass |
| CN113107020A (en) * | 2021-04-15 | 2021-07-13 | 天津城建大学 | Ecological type wind power pile foundation bottom protection structure and design method |
-
2022
- 2022-04-28 CN CN202210457888.6A patent/CN114837235A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120055390A1 (en) * | 2010-08-31 | 2012-03-08 | Atlas Elektronik Gmbh | Unmanned underwater vehicle and method for operating an unmanned underwater vehicle |
| CN106869190A (en) * | 2017-04-17 | 2017-06-20 | 中山市华蕴新能源科技有限公司 | underwater anti-scouring protection method and device |
| CN209786750U (en) * | 2019-01-14 | 2019-12-13 | 中国南方电网有限责任公司超高压输电公司广州局 | submarine cable scour prevention device combining bionic aquatic plants and cement chain quilt |
| CN213448545U (en) * | 2020-07-22 | 2021-06-15 | 广东华蕴新能源有限公司 | Offshore wind power foundation concrete block with bionic grass |
| CN113107020A (en) * | 2021-04-15 | 2021-07-13 | 天津城建大学 | Ecological type wind power pile foundation bottom protection structure and design method |
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