CN107187554A - The binary partly latent barge defeated for the dry haul of semisubmersible drilling platform and operational method - Google Patents
The binary partly latent barge defeated for the dry haul of semisubmersible drilling platform and operational method Download PDFInfo
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- CN107187554A CN107187554A CN201710348471.5A CN201710348471A CN107187554A CN 107187554 A CN107187554 A CN 107187554A CN 201710348471 A CN201710348471 A CN 201710348471A CN 107187554 A CN107187554 A CN 107187554A
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- barge
- hull
- partly latent
- drilling platform
- annular
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/28—Barges or lighters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
Abstract
The present invention relates to a kind of binary partly latent barge defeated for the dry haul of semisubmersible drilling platform and operational method, it includes barge hull；Two monomer partly latent barges of barge hull are constituted, and the empty cabin of isolation of double-decker is both provided with the monomer partly latent barge hull at stem and ship stern；Annular girder slideway is respectively arranged with isolation empty cabin both sides, and hydraulic mechanism is provided with the superstructure in the empty cabin of isolation, the pedestal of hydraulic mechanism is fixed on hull；Two monomer partly latent barges connect into barge hull by two annular buckstays, wherein one annular buckstay two ends are slidably connected at two monomer partly latent barges in the empty cabin of isolation of stem by annular girder slideway respectively, and the rigid beam end of annular, through the bulkhead in the empty cabin of isolation, another annular buckstay is slidably connected at two monomer partly latent barges in the empty cabin of isolation of ship stern by annular girder slideway；The hydraulic stem external part of hydraulic mechanism is connected after passing through the bulkhead in the empty cabin of isolation with annular rigid beam end.
Description
Technical field
The present invention relates to a kind of binary partly latent barge and operational method, it is used for semisubmersible drilling platform especially with regard to one kind
The defeated binary partly latent barge of dry haul and operational method.
Background technology
Semisubmersible drilling platform is the most widely used floating type well drilling equipment of ocean engineering circle, when platform needs to carry out long distance
During from transport, for lifting security, haulage time is saved, it is defeated to carry out dry haul frequently with partly latent barge carrying platform.At present partly
Submersible drilling platforms was developed to for the 7th generation, there are about more than 150 seats just under arms, and newly-built platform majority is not limit sea area, i.e. platform
It can carry out drillng operation in the world, therefore the dry haul of semi-submerged platform is defeated wide market.
Semisubmersible drilling platform is main by GVA, the Specialty Design company design such as F＆G, and flat-bottomed boat type is in principal dimensions in recent years
Aspect is substantially stationary, and captain is typically 100 to 120m scopes, the beam 70 to 90m scopes, and light weight is and normal at 3 to 40,000 tons
Partly latent bargemaster is advised more than 200m, when the dry haul of progress is defeated, the problem of may meeting with includes：Conventional partly latent barge is monomer
Ship, hull transverse direction stability is poor, after carrying platform, and because semisubmersible drilling platform center of gravity is high, wind area is big, jeopardizes and refutes
Ship transverse direction stability, it is necessary to the barging of platform light weight is much larger than using lifting capacity, on the one hand this measure causes ship to provide
The waste in source, another aspect barge container moldeed depth is big with drinking water, and some domestic harbour depth of waters are limited, cause shipment difficult；Separately
Outside, from structure stress angle, the conventional partly latent captain that moors a boat is almost twice of semi-submerged platform, and is carried after semi-submerged platform, hull
Bow stern buoyancy is more than gravity, and is significantly greater than buoyancy in ship midship gravity, causes moment of flexure of being hung down in very big hydrostatic；And the beam of barge
Fixed, the vertical load for being unfavorable for the load concentration positions such as drilling platforms column lower section is transferred directly to the strong structure such as barge longitudinal bulkhead
Part is this carry out it is dry drag operation before, barge also needs to carry out local flow improvement and reinforcement sometimes.In summary, due to barge with
Difference in terms of semisubmersible drilling platform yardstick so that it is carried out, and dry haul is defeated to have many problems.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of binary half defeated for the dry haul of semisubmersible drilling platform
Latent barge and operational method, its horizontal stability are good, and local strength readily satisfies, adaptable to the harbour depth of water.
To achieve the above object, the present invention takes following technical scheme：It is defeated that one kind is used for the dry haul of semisubmersible drilling platform
Binary partly latent barge, it is characterised in that：It is firm that it includes barge hull, the empty cabin of isolation, annular girder slideway, hydraulic mechanism and annular
Property beam；The barge hull is the catamaran being made up of two monomer partly latent barges, the monomer at stem and ship stern
The empty cabin of the isolation of double-decker is both provided with partly latent barge hull；It is respectively arranged with isolation empty cabin both sides described
Annular girder slideway, and it is provided with the hydraulic mechanism, the pedestal of the hydraulic mechanism in the superstructure in the empty cabin of the isolation
It is fixed on hull；Two monomer partly latent barges connect into the barge hull by two annular buckstays, its
In the annular buckstay two ends two monomer partly latent barges are slidably connected at by the annular girder slideway respectively
In the empty cabin of the isolation of stem, and the rigid beam end of the annular passes through the bulkhead in the empty cabin of the isolation, another institute
State annular buckstay by the annular girder slideway be slidably connected at two monomer partly latent barges close to described in ship stern every
From in empty cabin；The hydraulic stem external part of the hydraulic mechanism through after the bulkhead in the empty cabin of isolation with the rigid beam-ends of the annular
Portion is connected.
Further, in each empty cabin of the isolation, it is both provided with being used for the annular in the annular girder slideway
Buckstay is fixed on the fastener on the barge hull.
Further, it is provided with sealing with the bulkhead intersection location for isolating empty cabin in the hydraulic mechanism and annular buckstay
Device.
Further, in every monomer partly latent barge hull, in addition to the empty cabin of the isolation, along ship length direction simultaneously
Row is provided with some ballast tanks.
Further, some deck buttresses are provided with the main deck axis of every monomer partly latent barge.
Further, positioned at being provided with every described at the stem of monomer partly latent barge, be provided with barge forecastle, ship stern can
Dismantle buoyancy tank.
Further, the barge hull is self propelled barge, and two are separately installed with stem stern and hull bottom and is returned entirely
Turn propeller.
A kind of defeated binary partly latent barge of the dry haul of semisubmersible drilling platform that is used for based on above-mentioned binary partly latent barge is made
Industry method, it is characterised in that comprise the following steps：1) before the dry haul of progress is defeated, barge hull enters in certain sheltered waters first
Row row carries operation, so that itself drinking water reaches minimum, the hydraulic mechanism in the empty cabin of unlatching isolation afterwards, makes annular buckstay in ring
Slided in ellbeam slideway, make two monomer partly latent barge distances close with the semisubmersible drilling platform beam；2) ballast work is being carried out
Industry, barge hull, which backs away, makes barge ship stern move closer to semisubmersible drilling platform stem, until barge hull is entirely located in
Below the water surface, only hull forecastle makes barge hull be located at semi-submersible type drilling well afterwards with being located at more than the water surface at the top of detachable buoyancy tank
Immediately below platform；3) row of progress carries operation to barge again, and barge hull gradually floats, until semisubmersible drilling platform is held up；
4) barge reaches that the haul that hopped to it afterwards after the dry defeated drinking water state of haul is defeated；5) after subject oil field is arrived at, barge covers at certain
Waters carries out ballast operation, until barge hull is kept completely separate with semisubmersible drilling platform hull；6) barge hull is made to leave half
Submersible drilling platforms；7) barge carries out row and carries operation, completes dry haul defeated.
Further, the step 2) in, by opening the full circle swinging being arranged at barge hull stem stern and hull bottom
Propeller, makes barge hull be located at immediately below semisubmersible drilling platform；Meanwhile, step 6) in, by opening all-direction propeller,
Barge hull is set to leave semisubmersible drilling platform.
Further, the step 3) in, it is some on the main deck axis of every monomer partly latent barge by being arranged on
Deck buttress and semisubmersible drilling platform joint, semisubmersible drilling platform is held up.
The present invention is due to taking above technical scheme, and it has advantages below：1st, the present invention can be flat according to semi-submersible type drilling well
The platform beam adjusts barge spacing, and horizontal stability is good, and local strength readily satisfies.2nd, hull moldeed depth of the invention is small, to harbour water
It is deep adaptable.3rd, barge hull captain of the invention approaches with partly latent bargemaster, after shipment in vertical moment of flexure it is small；Hull is
Catamaran, ship resistance is small.In summary, the present invention can be applied in ocean engineering field extensively.
Brief description of the drawings
Fig. 1 is the binary partly latent barge structure schematic diagram of the present invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is Fig. 1 A-A sectional views；
Fig. 4 is Fig. 1 B-B sectional views；
Fig. 5 is that barge of defeated incipient stage adjusts its own beam to barge of the present invention according to the semisubmersible drilling platform beam outside
Schematic diagram；
Fig. 6 is that barge of the present invention moves closer to semisubmersible drilling platform stem schematic diagram；
Fig. 7 is that barge of the present invention carries out ballast operation, and back away make semisubmersible drilling platform from barge ship stern gradually
Into its main deck area schematic；
Fig. 8 is that barge of the present invention carries out row's load operation, and hull floats until semisubmersible drilling platform is held up into schematic diagram；
Fig. 9, which is that barge carrying semisubmersible drilling platform progress of the present invention is dry, drags schematic diagram；
Figure 10 is that the present invention reaches barge behind target sea area and carries out ballast operation until platform is kept completely separate signal with barge
Figure；
Figure 11 is that barge of the present invention is advanced until away from platform hull schematic diagram；
Figure 12 is that barge of the present invention floats, and completes the dry defeated schematic diagram of haul.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 to 4, the present invention provides a kind of binary partly latent defeated for the dry haul of semisubmersible drilling platform and refuted
Ship, it includes barge hull 1, barge forecastle 2, detachable buoyancy tank 3, the empty cabin 4 of isolation, annular girder slideway 5, hydraulic mechanism 6 and ring
Shape buckstay 7.
Barge hull 1 is the catamaran being made up of two monomer partly latent barges, positioned at the stem of every monomer partly latent barge
Place is both provided with being both provided with detachable buoyancy tank 3 on the outside of barge forecastle 2, the ship stern of every monomer partly latent barge；At stem
Monomer partly latent barge hull in be provided with the empty cabin 4 of isolation of double-decker, in the monomer partly latent barge hull at ship stern
It is also equipped with the empty cabin 4 of isolation of double-decker.In the empty cabin 4 of isolation, it is respectively arranged with annular girder in isolation empty cabin both sides and slides
Road 5, and hydraulic mechanism 6 is provided with the superstructure in the empty cabin 4 of isolation, the pedestal of hydraulic mechanism 6 is fixed on hull.Two
Monomer partly latent barge connects into barge hull 1 by two annular buckstays 7, wherein the annular two ends of buckstay 7 lead to respectively
Cross annular girder slideway 5 and be slidably connected at two monomer partly latent barges in the empty cabin 4 of isolation of stem, and the annular end of buckstay 7
Portion is through the bulkhead for isolating empty cabin 4, and another annular buckstay 7 is slidably connected at two monomer partly latents by annular girder slideway 5
Barge is in the empty cabin 4 of isolation of ship stern.The hydraulic stem external part of hydraulic mechanism 6 through after the bulkhead in the empty cabin 4 of isolation with annular
The end of buckstay 7 is connected, between the i.e. adjustable two monomer partly latent barges of hydraulic stem extension elongation by controlling hydraulic mechanism 6
Lateral separation.
In above-described embodiment, in the empty cabin 4 of each isolation, fastener 8 is both provided with annular girder slideway 5, is led to
Cross fastener 8 annular buckstay 7 is fixed on barge hull 1.
In the various embodiments described above, it is provided with hydraulic mechanism 6 and annular buckstay 7 with isolating the bulkhead intersection location in empty cabin 4
Sealing device, to prevent seawater from entering the empty cabin 4 of isolation.
In the various embodiments described above, in every monomer partly latent barge hull, in addition to the empty cabin 4 of isolation, along ship length direction
Some ballast tanks 9 have been arranged side by side；And some deck buttresses are provided with the main deck axis of every monomer partly latent barge
10。
In the various embodiments described above, barge hull 1 is self propelled barge, and two are separately installed with stem stern and hull bottom
All-direction propeller 11 (as shown in Figure 3).
In the various embodiments described above, the captain of every monomer partly latent barge is 150 meters, and the beam is 20 meters, main deck type
It it is deeply 10 meters, forecastle moldeed depth is 30 meters, and displacement is 60,000 tons.
In the various embodiments described above, the height of detachable buoyancy tank 3 is 30 meters, and width is 5 meters, and length is 20 meters.
In the various embodiments described above, two annular length of buckstay 7 are 100 meters,
In summary, binary partly latent barge of the invention is before the dry haul of progress is defeated, and barge hull 1 covers at certain first
Waters carries out row and carries operation, so that itself drinking water reaches minimum, the hydraulic mechanism 6 in the empty cabin 4 of unlatching isolation afterwards so that annular
Buckstay 7 is slided in annular girder slideway 5 so that two monomer partly latent barge beam connect with the semisubmersible drilling platform beam
Closely.The fastener 8 closed afterwards in annular girder slideway 5, to fix the width of barge hull 1.
The present invention also provides a kind of binary partly latent barge operational method defeated for the dry haul of semisubmersible drilling platform, and it is wrapped
Include following steps：
1) before the dry haul of progress is defeated, barge hull 1 carries out row's load operation in certain sheltered waters first, so that itself eats
Water reaches minimum, the hydraulic mechanism 6 in the empty cabin 4 of unlatching isolation afterwards so that annular buckstay 7 is slided in annular girder slideway 5,
So that two monomer partly latent barge distances are close with the semisubmersible drilling platform beam, as shown in Figure 5.
2) ballast operation is being carried out, barge hull 1, which backs away, makes barge ship stern move closer to semisubmersible drilling platform ship
Bow, as shown in Figure 6；Until barge hull 1 is entirely located in below the water surface, only hull forecastle 1 is located at water with the detachable top of buoyancy tank 3
More than face, all-direction propeller 11 is opened afterwards, barge hull 1 is located at immediately below semisubmersible drilling platform, as shown in Figure 7.
3) row of progress carries operation to barge again, and barge hull 1 gradually floats, deck buttress 10 and semisubmersible drilling platform phase
Place is met, until semisubmersible drilling platform is held up, as shown in Figure 8.
4) barge reaches that the haul that hopped to it afterwards after the dry defeated drinking water state of haul is defeated, as shown in Figure 9.
5) after subject oil field is arrived at, barge carries out ballast operation in certain sheltered waters, until deck buttress 10 and partly latent
Formula drilling platforms hull is kept completely separate, as shown in Figure 10.
6) all-direction propeller 11 is opened, barge hull 1 is left semisubmersible drilling platform, as shown in figure 11.
7) barge carries out row and carries operation, and the dry haul of completion is defeated, as shown in figure 12.
The various embodiments described above are merely to illustrate the present invention, and structure and size, set location and the shape of each part are all can be with
It is varied from, on the basis of technical solution of the present invention, all improvement carried out according to the principle of the invention to individual part and waits
With conversion, it should not exclude outside protection scope of the present invention.
Claims (10)
1. a kind of binary partly latent barge defeated for the dry haul of semisubmersible drilling platform, it is characterised in that：It include barge hull,
The empty cabin of isolation, annular girder slideway, hydraulic mechanism and annular buckstay；The barge hull is made up of two monomer partly latent barges
Catamaran, the isolation that double-decker is both provided with the monomer partly latent barge hull at stem and ship stern is empty
Cabin；The annular girder slideway is respectively arranged with isolation empty cabin both sides, and is set in the superstructure in the empty cabin of the isolation
The hydraulic mechanism is equipped with, the pedestal of the hydraulic mechanism is fixed on hull；Two monomer partly latent barges pass through two
The annular buckstay connects into the barge hull, wherein the annular buckstay two ends pass through the annular girder respectively
Slideway is slidably connected at two monomer partly latent barges in the empty cabin of the isolation of stem, and the rigid beam-ends of the annular
Portion is slidably connected at two through the bulkhead for isolating empty cabin, another annular buckstay by the annular girder slideway
The monomer partly latent barge is in the empty cabin of the isolation of ship stern；The hydraulic stem external part of the hydraulic mechanism through it is described every
From being connected after the bulkhead in empty cabin with the rigid beam end of annular.
2. do the defeated binary partly latent barge of haul for semisubmersible drilling platform as claimed in claim 1, it is characterised in that：Often
In the individual empty cabin of the isolation, it is both provided with being used in the annular girder slideway that the annular buckstay is fixed on into described refute
Fastener on ship hull.
3. do the defeated binary partly latent barge of haul for semisubmersible drilling platform as claimed in claim 1, it is characterised in that：
The hydraulic mechanism and annular buckstay are provided with sealing device with the bulkhead intersection location for isolating empty cabin.
4. do the defeated binary partly latent barge of haul for semisubmersible drilling platform as claimed in claim 1, it is characterised in that：Often
In the monomer partly latent barge hull, in addition to the empty cabin of the isolation, some ballasts have been arranged side by side along ship length direction
Cabin.
5. do the defeated binary partly latent barge of haul for semisubmersible drilling platform as claimed in claim 1, it is characterised in that：
Some deck buttresses are provided with the main deck axis of every monomer partly latent barge.
6. do the defeated binary partly latent barge of haul for semisubmersible drilling platform as claimed in claim 1, it is characterised in that：Position
It is provided with the stem of every monomer partly latent barge at barge forecastle, ship stern and is provided with detachable buoyancy tank.
7. do the defeated binary partly latent barge of haul for semisubmersible drilling platform as claimed in claim 1, it is characterised in that：Institute
Barge hull is stated for self propelled barge, two all-direction propellers are separately installed with stem stern and hull bottom.
8. a kind of be used for the defeated binary half of the dry haul of semisubmersible drilling platform based on binary partly latent barge as claimed in claim 1
Latent barge operational method, it is characterised in that comprise the following steps：
1) before the dry haul of progress is defeated, barge hull carries out row's load operation in certain sheltered waters first, so that itself drinking water reaches
To minimum, the hydraulic mechanism in the empty cabin of isolation is opened afterwards, annular buckstay is slided in annular girder slideway, makes two monomers
Partly latent barge distance is close with the semisubmersible drilling platform beam；
2) ballast operation is being carried out, barge hull, which backs away, makes barge ship stern move closer to semisubmersible drilling platform stem, directly
It is entirely located in barge hull below the water surface, only hull forecastle makes barge afterwards with being located at more than the water surface at the top of detachable buoyancy tank
Hull is located at immediately below semisubmersible drilling platform；
3) row of progress carries operation to barge again, and barge hull gradually floats, until semisubmersible drilling platform is held up；
4) barge reaches that the haul that hopped to it afterwards after the dry defeated drinking water state of haul is defeated；
5) after subject oil field is arrived at, barge carries out ballast operation in certain sheltered waters, until barge hull and semi-submersible type drilling well
Platform hull is kept completely separate；
6) barge hull is made to leave semisubmersible drilling platform；
7) barge carries out row and carries operation, completes dry haul defeated.
9. doing the defeated binary partly latent barge operational method of haul for semisubmersible drilling platform as claimed in claim 8, it is special
Levy and be：The step 2) in, by opening the all-direction propeller being arranged at barge hull stem stern and hull bottom, make
Barge hull is located at immediately below semisubmersible drilling platform；Meanwhile, step 6) in, by opening all-direction propeller, make barge ship
Body leaves semisubmersible drilling platform.
10. doing the defeated binary partly latent barge operational method of haul for semisubmersible drilling platform as claimed in claim 8, it is special
Levy and be：The step 3) in, pass through some deck buttresses being arranged on the main deck axis of every monomer partly latent barge
With semisubmersible drilling platform joint, semisubmersible drilling platform is held up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348471.5A CN107187554B (en) | 2017-05-17 | 2017-05-17 | Double-body semi-submersible barge for dry towing transportation of semi-submersible drilling platform and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348471.5A CN107187554B (en) | 2017-05-17 | 2017-05-17 | Double-body semi-submersible barge for dry towing transportation of semi-submersible drilling platform and operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107187554A true CN107187554A (en) | 2017-09-22 |
| CN107187554B CN107187554B (en) | 2019-12-13 |
Family
ID=59873854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348471.5A Active CN107187554B (en) | 2017-05-17 | 2017-05-17 | Double-body semi-submersible barge for dry towing transportation of semi-submersible drilling platform and operation method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107187554B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109178226A (en) * | 2018-08-15 | 2019-01-11 | 招商局重工（江苏）有限公司 | A method of reducing the drinking water of semi-submersible offshore engineering platform |
| CN109263820A (en) * | 2018-10-29 | 2019-01-25 | 中船黄埔文冲船舶有限公司 | A kind of sinkage experiment method for deep diving bottom-sitting type wind energy project ship |
| CN111980067A (en) * | 2020-08-03 | 2020-11-24 | 中交第四航务工程局有限公司 | Construction method for long-distance conveying of immersed tube by adopting refuting process |
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| JPS5647379A (en) * | 1979-09-28 | 1981-04-30 | Mitsubishi Heavy Ind Ltd | Catamaran |
| EP0249422A1 (en) * | 1986-06-09 | 1987-12-16 | Haugesund Mekaniske Verksted A/S | Method and arrangement for raising rigs |
| JPH06336190A (en) * | 1993-05-28 | 1994-12-06 | Daido Eng Kk | Submersible barge |
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| CN201816730U (en) * | 2010-09-13 | 2011-05-04 | 上海利策科技有限公司 | Low-heaving semi-submersible type platform hull |
| CN202609028U (en) * | 2012-03-08 | 2012-12-19 | 中国海洋石油总公司 | Catamaran for oceanographic engineering |
| CN103963931A (en) * | 2014-04-20 | 2014-08-06 | 中交一航局第二工程有限公司 | Large component semi-submersible water transport installation system and construction method |
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| JPS5647379A (en) * | 1979-09-28 | 1981-04-30 | Mitsubishi Heavy Ind Ltd | Catamaran |
| EP0249422A1 (en) * | 1986-06-09 | 1987-12-16 | Haugesund Mekaniske Verksted A/S | Method and arrangement for raising rigs |
| JPH06336190A (en) * | 1993-05-28 | 1994-12-06 | Daido Eng Kk | Submersible barge |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109178226A (en) * | 2018-08-15 | 2019-01-11 | 招商局重工（江苏）有限公司 | A method of reducing the drinking water of semi-submersible offshore engineering platform |
| CN109263820A (en) * | 2018-10-29 | 2019-01-25 | 中船黄埔文冲船舶有限公司 | A kind of sinkage experiment method for deep diving bottom-sitting type wind energy project ship |
| CN111980067A (en) * | 2020-08-03 | 2020-11-24 | 中交第四航务工程局有限公司 | Construction method for long-distance conveying of immersed tube by adopting refuting process |
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| Publication number | Publication date |
|---|---|
| CN107187554B (en) | 2019-12-13 |
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