CN112814118A - Connection construction method for turning section of sea pipeline - Google Patents
Connection construction method for turning section of sea pipeline Download PDFInfo
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- CN112814118A CN112814118A CN202011610510.2A CN202011610510A CN112814118A CN 112814118 A CN112814118 A CN 112814118A CN 202011610510 A CN202011610510 A CN 202011610510A CN 112814118 A CN112814118 A CN 112814118A
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- pipeline
- sea area
- turning section
- buoyancy tank
- steel
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/077—Tunnels at least partially built beneath the water-bed characterised by being made by methods involving disturbance thereof all along the location line, e.g. by cut-and-cover or caisson methods
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
Abstract
A construction method for connecting a turning section of a sea area pipeline relates to the technical field of offshore pipeline laying engineering and comprises the following steps of digging a submarine trench according to a design axis of the turning section of the sea area pipeline; transporting the three-way pipe and the welding equipment to a sinking place of the turning section of the sea area pipeline, and welding the three-way pipe to the top of the turning section of the sea area pipeline; preparing a steel buoyancy tank; straight line sections of the sea area pipelines on two sides are fixed on the cross beam; filling gas into straight sections of the sea area pipelines on the front side and the rear side of the turning section of the sea area pipeline to enable the straight sections to float out of the water surface, and then respectively dragging one end of the straight section of the sea area pipeline and one end of the turning section of the sea area pipeline to a steel buoyancy tank to connect the pipeline and the steel buoyancy tank into a whole; the steel pipe floats upwards by controlling the water injection amount in the steel buoyancy tank, and sinks by adopting a water injection method, so that the three-way pipe is sealed by diving when the pipeline sinks stably into a pre-dug groove. The invention is simple and reliable, builds safe and stable working environment at sea, and has good welding quality, short construction period and low construction cost.
Description
Technical Field
The invention relates to the technical field of offshore pipeline laying engineering, in particular to a connection construction method for a turning section of a sea pipeline.
Background
With the continuous development of ocean economy, coastal industrial parks are also developed rapidly, a plurality of industrial and mining enterprises need to establish perfect sewage treatment pipe networks in coastal areas, long-distance tail water drainage pipelines need to be established for considering environmental protection and industrial production, and the design of bending pipeline axes is inevitably needed due to the complex and changeable submarine topography. The pipeline in the straight section area can be smoothly constructed by a special or transformed pipeline laying ship, the construction method of the pipeline in the bent section is complex, the construction method of the currently common pipeline bent section in the sea area adopts a pipe erecting method, pile sinking construction of steel pipe piles is required to be carried out before pipeline laying, then cross beams are erected among the steel pipe piles, and finally the pipeline is fixed on the cross beams through bolts, so that the construction of the pipeline bent section in the sea area is realized. It is necessary to design a convenient and fast connection construction method for the turning section of the sea pipeline.
The sea area pipeline of the tail water drainage engineering has larger pipeline diameter and smaller pipeline wall thickness, so the difficulty of installation and laying at sea is higher, particularly laying and installation construction of a turning section, and the sea stormy wave condition is quite severe.
Aiming at the current situations that the construction process is complex, the cost of constructing and driving steel pipe piles at sea is high and the operation condition is unstable in the existing construction method of the sea area pipeline turning section, a simple and convenient construction method of the sea area pipeline turning section capable of creating a safe and stable construction operation environment is needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a safe and stable marine pipeline turning section connection construction method which is simple and reliable, has shorter construction period and lower construction cost, and aims to overcome the defects of the prior art.
The technical problem to be solved by the invention is realized by the following technical scheme, the invention relates to a construction method for connecting the turning sections of the pipelines in the sea area, which is characterized by comprising the following steps,
(1) construction preparation for turning section of sea area pipeline
a. Digging a groove on the seabed: digging out a submarine trench by using a grab dredger according to the design axis of the turning section of the sea area pipeline;
b. welding a three-way pipe: the three-way pipe and the welding equipment are transported to a sinking place of the turning section of the sea area pipeline through the tugboat, the three-way pipe is welded to the top of the turning section of the sea area pipeline through the welding equipment, and the three-way pipe is communicated with the turning section of the sea area pipeline;
c. preparing a steel buoyancy tank: the steel buoyancy tank comprises two buoys which are connected through a bearing bracket;
(2) installation of turning section of sea pipeline
a. Connecting a steel buoyancy tank: moving the steel buoy to a sinking place of a turning section of the sea area pipeline; filling gas into the straight line sections of the sea area pipelines on the front side and the rear side of the turning section of the sea area pipeline to enable the straight line sections of the sea area pipelines on the two sides to float out of the water surface; injecting water into the two floating drums of the steel floating box to enable the support bracket of the steel floating box to sink to be lower than the lower bottom surface of the straight line section of the sea area pipeline, then respectively dragging the butt ends of the straight line sections of the sea area pipeline, of which the two sides are to be connected with the turning section of the sea area pipeline, to the support bracket of the steel floating box, and connecting the butt ends of the straight line sections of the sea area pipeline and the steel floating box into a whole by using a water-stopping rubber hoop;
b. floating the pipeline: pumping out water in a floating barrel of the steel buoyancy tank by using a water pump, floating the steel buoyancy tank, and lifting straight-line sections of the sea area pipelines at two sides away from the water surface;
c. welding a pipeline: welding a straight section of the sea area pipeline at one end and a bent section of the pipeline by using welding equipment, detecting a welding seam of the pipeline, and loosening the water-stopping rubber hoop at the side after the welding seam is detected to be qualified; then, starting welding connection of the straight section of the sea area pipeline at the other end and the turning section of the sea area pipeline;
(3) sinking embedding of sea area pipeline turning section
a. Withdrawing the steel buoyancy tank: after welding is finished, loosening the water-stopping rubber hoop on the side, and withdrawing the steel buoyancy tank;
b. pipeline water injection sinking: the position of the pipeline is controlled by using a crawler crane hook, water is injected into the three-way pipe by using a water pump, the pipeline is made to sink by overcoming buoyancy, and the crawler crane is loosened when the pipeline sinks stably into a pre-dug groove;
c. sealing the three-way pipe: arranging divers to launch water to carry out sealing operation on the three-way pipe, and finishing the connection construction of the turning section of the sea area pipeline after the three-way pipe is sealed.
The technical problem to be solved by the invention can be further realized by the following technical scheme, wherein in the construction method for connecting the turning sections of the sea area pipelines, the following steps are carried out: and (3) an exhaust valve is arranged on the three-way pipe, and in the step (3), the exhaust valve is used for exhausting while water is injected into the three-way pipe.
The technical problem to be solved by the invention can be further realized by the following technical scheme, wherein in the construction method for connecting the turning sections of the sea area pipelines, the following steps are carried out: the supporting bracket of the steel buoyancy tank comprises a plurality of cross beams arranged side by side, a bottom plate is connected between every two adjacent cross beams, the buoys are symmetrically arranged on two sides of the cross beams, and the axis direction of the buoys is perpendicular to the cross beams.
The technical problem to be solved by the invention can be further realized by the following technical scheme, wherein in the construction method for connecting the turning sections of the sea area pipelines, the following steps are carried out: in the step (3), in the step a, the pipeline is lifted to a buoy which is higher than the steel buoyancy tank by using a crawler crane lifting hook, and the steel buoyancy tank is withdrawn from the lower part of the pipeline.
Compared with the prior art, the invention has the beneficial effects that:
in the connection construction process of the pipeline turning section in the sea area, a special steel buoyancy tank is designed as a construction platform, the sinking and floating of the steel buoyancy tank are controlled to adjust the construction state of the pipeline turning section, a stable working environment is provided for the construction of the pipeline turning section in the sea area, adverse effects caused by unstable offshore operation environment can be overcome, and the welding connection quality of the pipeline turning section in the sea area can be improved; the height of the pipeline connecting section is controlled by using the steel buoyancy tanks, the control method is simple, the construction procedures are fewer, and the construction cost is lower;
in addition, the three-way pipe is connected to the turning section of the sea area pipeline to control the water injection amount in the pipeline, and the sinking of the turning section of the sea area pipeline is realized by injecting water into the pipeline. The water injection immersed tube method can control the smooth sinking of the turning section of the sea pipeline, and the safety and controllability of the construction process are realized. The construction method can reduce the construction process of the turning section of the sea area pipeline, does not need to drive steel pipe piles, is simple in construction process and high in construction speed, and has great practical value and social significance for connection construction of the turning section of the sea area pipeline.
Drawings
FIG. 1 is a top view of a connection of a pipe turn section in the sea area;
fig. 2 is an elevation view of a marine pipeline turnaround section connection.
In the figure: 1. the marine pipeline comprises a marine pipeline turning section, 2. a marine pipeline straight section, 3. a cross beam, 4. a steel bottom plate, 5. a buoy, 6. a three-way pipe, 7. a water-stopping rubber hoop and 8. a flange; A. and the welding part of the turning section of the sea area pipeline and the straight section of the sea area pipeline.
Detailed Description
The following further describes particular embodiments of the present invention to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.
In order to achieve the above purpose, the invention uses the steel buoyancy tank as a construction platform, adopts the three-way pipe 6 to connect one end of the sea area pipeline turning section 1, injects water into the three-way pipe 6 through a water pump to control the sinking speed of the turning section, and performs pipeline welding connection operation on the steel buoyancy tank.
(1) construction preparation for sea area pipeline turning section 1
a. Digging a groove on the seabed: digging out a submarine trench by using a grab dredger according to the design axis of the turning section 1 of the sea area pipeline;
b. welding the three-way pipe 6: the three-way pipe 6 and welding equipment are transported to a sinking place of the sea area pipeline turning section 1 through a tugboat, the three-way pipe 6 is welded to the top of the sea area pipeline turning section 1 through the welding equipment, and the three-way pipe 6 is communicated with the sea area pipeline turning section 1;
c. preparing a steel buoyancy tank: the steel buoyancy tank comprises two buoys 5, and the two buoys 5 are connected through a bearing bracket;
(2) installation of a pipe bend section 1 in the sea
a. Connecting a steel buoyancy tank: moving the steel buoy 5 to a sinking place of the turning section 1 of the sea area pipeline; filling gas into the sea area pipeline straight line sections 2 on the front side and the rear side of the sea area pipeline turning section 1, so that the sea area pipeline straight line sections 2 on the two sides float out of the water surface; injecting water into the two buoys 5 of the steel buoyancy tank to enable the support bracket of the steel buoyancy tank to sink to be lower than the lower bottom surface of the straight line section 2 of the sea area pipeline, then respectively dragging the butt joint ends of the straight line sections 2 of the sea area pipeline, which are to be connected with the turning section 1 of the sea area pipeline, at two sides onto the support bracket of the steel buoyancy tank, and connecting the butt joint ends of the straight line sections 2 of the sea area pipeline at the two sides and the steel buoyancy tank into a whole by using a water-stopping rubber hoop;
b. floating the pipeline: pumping out water in a buoy 5 of the steel buoyancy tank by using a water pump, so that the steel buoyancy tank floats upwards, and lifting straight-line sections 2 of the sea area pipelines on two sides away from the water surface;
c. welding a pipeline: welding the straight-line section 2 of the sea area pipeline at one end and the bent section of the pipeline by using welding equipment, detecting the welding seam of the pipeline, and loosening the water-stopping rubber hoop at the side after the welding seam is detected to be qualified; then, starting the welding connection of the straight section 2 of the sea area pipeline at the other end and the turning section 1 of the sea area pipeline;
(3) sinking and burying of sea area pipeline turning section 1
a. Withdrawing the steel buoyancy tank: after welding is finished, loosening the water-stopping rubber hoop on the side, and withdrawing the steel buoyancy tank;
b. pipeline water injection sinking: the position of the pipeline is controlled by using a crawler crane hook, water is injected into the three-way pipe 6 by using a water pump, the pipeline sinks by overcoming buoyancy, and when the pipeline sinks stably into a pre-dug groove, the crawler crane is loosened;
c. sealing the three-way pipe 6: arranging divers to launch water to carry out sealing operation on the three-way pipe 6, and finishing the connection construction of the turning section 1 of the sea area pipeline after the three-way pipe 6 is sealed.
An exhaust valve is arranged on the three-way pipe 6, and in the step (3), water is injected into the three-way pipe 6 and simultaneously exhaust is carried out through the exhaust valve. And a stainless steel flange 8 is arranged at the top of the three-way pipe 6.
The support bracket of steel flotation tank includes a plurality of crossbeams 3 that set up side by side, is connected with the bottom plate between the adjacent crossbeam 3, and 5 symmetries of flotation pontoon set up in the both sides of crossbeam 3, and the axis direction and the crossbeam 3 of flotation pontoon 5 set up perpendicularly.
In the step (3), in the step a, the pipeline is lifted to the buoy 5 which is higher than the steel buoyancy tank by using the crawler crane lifting hook, and the steel buoyancy tank is withdrawn from the lower part of the pipeline.
The invention adopts the steel buoyancy tanks made of steel pipes to build the welding operation platform of the sea pipeline turning section 1, and realizes the stable operation of the offshore welding construction by using lower cost;
the floating and sinking of the straight-line section 2 of the sea area pipeline are controlled by using a three-way pipe 6 water injection mode, a large-tonnage marine hoisting ship is avoided, the construction cost is saved, the construction method is simple, and the construction period is shortened.
The required welded sea area pipeline turning section 1 and the sea area pipeline straight-line section 2 are fixed through the rubber anchor ear, so that the installation and the disassembly are convenient, the construction process is simple, and the construction period is short.
Claims (4)
1. A construction method for connecting a turning section of a sea area pipeline is characterized by comprising the following steps: the method comprises the following steps of,
(1) construction preparation for turning section of sea area pipeline
a. Digging a groove on the seabed: digging out a submarine trench by using a grab dredger according to the design axis of the turning section of the sea area pipeline;
b. welding a three-way pipe: the three-way pipe and the welding equipment are transported to a sinking place of the turning section of the sea area pipeline through the tugboat, the three-way pipe is welded to the top of the turning section of the sea area pipeline through the welding equipment, and the three-way pipe is communicated with the turning section of the sea area pipeline;
c. preparing a steel buoyancy tank: the steel buoyancy tank comprises two buoys which are connected through a bearing bracket;
(2) installation of turning section of sea pipeline
a. Connecting a steel buoyancy tank: moving the steel buoy to a sinking place of a turning section of the sea area pipeline; filling gas into the straight line sections of the sea area pipelines on the front side and the rear side of the turning section of the sea area pipeline to enable the straight line sections of the sea area pipelines on the two sides to float out of the water surface; injecting water into the two floating drums of the steel floating box to enable the support bracket of the steel floating box to sink to be lower than the lower bottom surface of the straight line section of the sea area pipeline, then respectively dragging the butt ends of the straight line sections of the sea area pipeline, of which the two sides are to be connected with the turning section of the sea area pipeline, to the support bracket of the steel floating box, and connecting the butt ends of the straight line sections of the sea area pipeline and the steel floating box into a whole by using a water-stopping rubber hoop;
b. floating the pipeline: pumping out water in a floating barrel of the steel buoyancy tank by using a water pump, floating the steel buoyancy tank, and lifting straight-line sections of the sea area pipelines at two sides away from the water surface;
c. welding a pipeline: welding a straight section of the sea area pipeline at one end and a bent section of the pipeline by using welding equipment, detecting a welding seam of the pipeline, and loosening the water-stopping rubber hoop at the side after the welding seam is detected to be qualified; then, starting welding connection of the straight section of the sea area pipeline at the other end and the turning section of the sea area pipeline;
(3) sinking embedding of sea area pipeline turning section
a. Withdrawing the steel buoyancy tank: after welding is finished, loosening the water-stopping rubber hoop on the side, and withdrawing the steel buoyancy tank;
b. pipeline water injection sinking: the position of the pipeline is controlled by using a crawler crane hook, water is injected into the three-way pipe by using a water pump, the pipeline is made to sink by overcoming buoyancy, and the crawler crane is loosened when the pipeline sinks stably into a pre-dug groove;
c. sealing the three-way pipe: arranging divers to launch water to carry out sealing operation on the three-way pipe, and finishing the connection construction of the turning section of the sea area pipeline after the three-way pipe is sealed.
2. The sea area pipeline turning section connecting construction method according to claim 1, characterized in that: and (3) an exhaust valve is arranged on the three-way pipe, and in the step (3), the exhaust valve is used for exhausting while water is injected into the three-way pipe.
3. The sea area pipeline turning section connecting construction method according to claim 1, characterized in that: the supporting bracket of the steel buoyancy tank comprises a plurality of cross beams arranged side by side, a bottom plate is connected between every two adjacent cross beams, the buoys are symmetrically arranged on two sides of the cross beams, and the axis direction of the buoys is perpendicular to the cross beams.
4. The sea area pipeline turning section connecting construction method according to claim 1, characterized in that: in the step (3), in the step a, the pipeline is lifted to a buoy which is higher than the steel buoyancy tank by using a crawler crane lifting hook, and the steel buoyancy tank is withdrawn from the lower part of the pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011610510.2A CN112814118A (en) | 2020-12-29 | 2020-12-29 | Connection construction method for turning section of sea pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011610510.2A CN112814118A (en) | 2020-12-29 | 2020-12-29 | Connection construction method for turning section of sea pipeline |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587771A (en) * | 2004-09-02 | 2005-03-02 | 上海自来水给水设备工程有限公司 | Construction method for polyvinyl plastic pipeline long distance deep water crossing river |
| CN101691893A (en) * | 2009-06-17 | 2010-04-07 | 钟爱民 | Underwater construction method of steel tube |
| CN103912722A (en) * | 2014-04-23 | 2014-07-09 | 中国化学工程第三建设有限公司 | Sunken pipe assembling method for making pipeline pass through river |
| CN106120859A (en) * | 2016-07-02 | 2016-11-16 | 天鸿建设集团有限公司 | A kind of construction method of many pipeline sections immersed tube river crossing |
| CN207049436U (en) * | 2017-08-11 | 2018-02-27 | 云南建投安装股份有限公司 | Siphon piping slideway platform for lining |
| CN108571621A (en) * | 2018-05-07 | 2018-09-25 | 中国冶集团有限公司 | Floating box type water floats gantry crane method pipeline Immersed tunnel method |
| US20180313466A1 (en) * | 2015-10-26 | 2018-11-01 | Saipem S.A. | Method For Draining A Fluid-Transporting Underwater Pipe Which Is Submerged And Filled With Water |
| CN109780325A (en) * | 2018-12-17 | 2019-05-21 | 中铁广州工程局集团有限公司 | A kind of water factory's water intaking tunnel submarine pipeline installation method |
-
2020
- 2020-12-29 CN CN202011610510.2A patent/CN112814118A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587771A (en) * | 2004-09-02 | 2005-03-02 | 上海自来水给水设备工程有限公司 | Construction method for polyvinyl plastic pipeline long distance deep water crossing river |
| CN101691893A (en) * | 2009-06-17 | 2010-04-07 | 钟爱民 | Underwater construction method of steel tube |
| CN103912722A (en) * | 2014-04-23 | 2014-07-09 | 中国化学工程第三建设有限公司 | Sunken pipe assembling method for making pipeline pass through river |
| US20180313466A1 (en) * | 2015-10-26 | 2018-11-01 | Saipem S.A. | Method For Draining A Fluid-Transporting Underwater Pipe Which Is Submerged And Filled With Water |
| CN106120859A (en) * | 2016-07-02 | 2016-11-16 | 天鸿建设集团有限公司 | A kind of construction method of many pipeline sections immersed tube river crossing |
| CN207049436U (en) * | 2017-08-11 | 2018-02-27 | 云南建投安装股份有限公司 | Siphon piping slideway platform for lining |
| CN108571621A (en) * | 2018-05-07 | 2018-09-25 | 中国冶集团有限公司 | Floating box type water floats gantry crane method pipeline Immersed tunnel method |
| CN109780325A (en) * | 2018-12-17 | 2019-05-21 | 中铁广州工程局集团有限公司 | A kind of water factory's water intaking tunnel submarine pipeline installation method |
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Application publication date: 20210518 |
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