CN110397793A - Pipe installation method in the region of cofferdam - Google Patents
Pipe installation method in the region of cofferdam Download PDFInfo
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- CN110397793A CN110397793A CN201910716295.5A CN201910716295A CN110397793A CN 110397793 A CN110397793 A CN 110397793A CN 201910716295 A CN201910716295 A CN 201910716295A CN 110397793 A CN110397793 A CN 110397793A
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- slope
- cofferdam
- region
- lower horizontal
- section
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/16—Laying or reclaiming pipes on or under water on the bottom
Abstract
The present invention provides the pipe installation method in a kind of cofferdam region, and one, silt operation ship constructs confferdam and dyke-dam；Two, land side makes slope surface, and submarine pipeline one end is in confferdam and dyke-dam, the landing stage of scaffold and loop wheel machine cofferdam region in place；Three, submarine pipeline is connect with slope tube lower horizontal section in the region of cofferdam；Four, slope tube lower horizontal section is connect with slope tube upper curved section in the region of cofferdam；Five, slope tube upper curved section elbow section is installed into blank flange in the region of cofferdam；Six, submarine pipeline installation position is backfilled and is protected, landforms are restored；The preprocessing process that submarine pipeline logs in operation is reduced, avoids reducing construction cost using operation ship, keeping pipeline landing operation safety reliable.
Description
Technical field
The present invention relates to the pipe installation methods in undersea pipe-laying technology more particularly to a kind of cofferdam region.
Background technique
Recently as increasing for pipe laying work, pipeline landing operation also gradually increases.Tradition logs in dilatory mode
Are as follows: pipeline is dilatory by the linear winches for logging in side, and pipeline is dragged to terrestrial location.The shortcomings that this mode is to work as pipe
When road login location depth displacement is larger (difference in height that depth displacement is exactly sea bed and land), cause to log in side pretreatment work amount
It is more, extend the project construction duration, increases project cost.
Summary of the invention
It is a primary object of the present invention to overcome disadvantages mentioned above existing for existing construction method, and provide a kind of cofferdam region
Interior pipe installation method reduces the preprocessing process that submarine pipeline logs in operation, avoids using operation ship, reduction is constructed into
This, keeps pipeline landing operation safety reliable.
The purpose of the present invention is implemented by the following technical solutions.
Pipe installation method in cofferdam region of the present invention, which comprises the following steps:
The first step, silt operation ship are docked in design position, by geotextiles pre-arranged apart from land skew back slope bottom of slope 50
To 60 meters of position, silt operation ship is connect with geotextiles by silt delivery hose, silt operation ship and silt delivery hose
Silt is injected to geotextiles, after geotextiles fill silt, successively stacks into the trapezoidal confferdam and dyke-dam of vertical section, the confferdam and dyke-dam
Both ends are supported in land skew back slope two sides, and cofferdam region is constituted；
Second step, the surfacing operation of land skew back slope and makes slope surface, and submarine pipeline one end passes through dilatory operator
Formula passes through confferdam and dyke-dam, and the landing stage of scaffold and loop wheel machine are seated in the region of cofferdam；
Third step, in the region of cofferdam by one end in the cofferdam region that is penetrated on the outside of confferdam and dyke-dam and tiltedly by submarine pipeline
The connection of standpipe lower horizontal section elbow end；
4th step, by the straight pipe end of slope tube lower horizontal section and slope tube upper curved section straight pipe one end in the region of cofferdam
Connection；
5th step, the elbow section in the region of cofferdam by slope tube upper curved section away from slope tube lower horizontal section one end install blind plate
Flange；
6th step, silt backfill operation, carry out backfill protection to submarine pipeline installation position, complete land restoration operation.
Pipe installation method in cofferdam region above-mentioned, wherein
Silt operation ship is first located in 100 ± 20 meters of cofferdam areas outside of position by the first step；Geotextiles according to
Confferdam and dyke-dam position pre-arranged；Silt is delivered to geotextiles, the soil full of silt by silt delivery hose by silt operation ship
Work cloth successively stacks into the trapezoidal confferdam and dyke-dam of vertical section up and down, which supports in land skew back slope two sides,
Constitute cofferdam region；The height of the trapezoidal confferdam and dyke-dam is 5 to 6 meters, and the width of upper end is 9 to 12 meters, lower end width be 15 to
20 meters, length is 60 to 80 meters；After the silt operation ship completes cofferdam operation, the seawater in the region of cofferdam is removed by water pump
On the outside of to confferdam and dyke-dam, drying operation environment in the region of cofferdam is formed；
The second step pre-processes land skew back slope, slope leveling, realizes that loop wheel machine enters safely construction site；
Meanwhile guaranteeing that the angle between land skew back slope and sea level is 15 to 20 degree；Slope tube lower horizontal section is determined according to ramp angles
Angle of bend is that 180 degree subtracts angle degree between land skew back slope and sea level；Submarine pipeline one end by dilatory mode into
Enter into cofferdam region, the landing stage of scaffold is seated in submarine pipeline and is located in the region of cofferdam one end end end, and loop wheel machine is located in cofferdam
Construction location in region；
The third step, with button wirerope and jack first on the tube body of slope tube lower horizontal section, by adjusting jack
Length and then the position for adjusting slope tube lower horizontal section realize slope tube lower horizontal section straight pipe with land skew back slope slope surface in parallel
Shape；Then, adjustment loop wheel machine transfers slope tube lower horizontal section, realizes that slope tube lower horizontal section bend loss and submarine pipeline are located at cofferdam region
Interior one end is axially aligned, complete slope tube lower horizontal section bend loss and submarine pipeline group to operation, then the landing stage of scaffold into
Row weld job；
4th step, after slope tube lower horizontal section is first fixed on land skew back slope, then movable Scaffold job platform
To the end of slope tube lower horizontal section straight pipe, the position of loop wheel machine is then adjusted, and is transferred by adjusting rope rig and jack
Slope tube upper curved section makes slope tube upper curved section straight pipe be located at slope tube lower horizontal section straight pipe end with land skew back slope with upper
The slope surface set is in parallel shape；Loop wheel machine is adjusted again, transfers slope tube upper curved section, is realized under slope tube upper curved section straight pipe and slope tube
Two pipe ends of curved segment straight pipe are axially aligned, complete the group of slope tube upper curved section straight pipe and slope tube lower horizontal section straight pipe pipe end
To operation, finally in the scaffold for being located at slope tube upper curved section straight pipe and two pipe end junctions of slope tube lower horizontal section straight pipe
Weld job is carried out on platform；
5th step, the elbow section in the region of cofferdam by slope tube upper curved section away from slope tube lower horizontal section one end are installed
Blank flange is protected with the elbow section to slope tube upper curved section one end, enters sundries from slope tube upper curved section pipe end, just
It constructs in subsequent terrestrial pipeline；
6th step, after the weld job for completing two slope tubes, to slope tube lower horizontal section, slope tube upper curved section and
The operating area of submarine pipeline carries out coarse sand and native soil layer backfills operation, protects to submarine pipeline, and restores land side original
Looks.
Pipe installation method in cofferdam region of the present invention the utility model has the advantages that in conjunction with side elevation feature is logged in, using cofferdam
The login method that slope tube is installed in region, reduces the preprocessing process of login location, avoids reducing construction using operation ship
Cost, that realizes pipeline lands safely operation.
Detailed description of the invention
Fig. 1 is cofferdam overall structure of the present invention and layout drawing.
Figure 1A is cofferdam structure top view of the present invention.
Figure 1B is cofferdam structure longitudinal direction of the present invention cross-section diagram.
Fig. 2 is loop wheel machine of the present invention, the landing stage of scaffold, submarine pipeline with regard to bitmap.
Fig. 3 is slope tube lower horizontal section erection drawing of the present invention.
Fig. 4 is that slope tube lower horizontal section of the present invention is transferred with regard to bitmap.
Fig. 5 is that loop wheel machine of the present invention lifts by crane slope tube upper curved section figure.
Fig. 6 is that loop wheel machine of the present invention transfers slope tube upper curved section in place.
Fig. 7 is that slope tube of the present invention installs end blind flange installation diagram.
Major Symbol illustrates in figure: 11 silt operation ships, 12 geotextiles, 13 silt delivery hoses, 2 confferdam and dyke-dams, 21 are enclosed
Weir height, 22 cofferdam upper end widths, 23 cofferdam lower end widths, 3 land skew back slopes, 4 submarine pipelines, 41 slope tube lower horizontal sections, 42
Slope tube upper curved section, 5 scaffold job platforms, 6 loop wheel machines, 71 wirerope, 72 jacks, 8 blind plates, the land A skew back slope (3) and Hai Ping
Angle between face.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Pipe installation method in cofferdam region of the present invention comprising following steps:
The first step, silt operation ship 11 are docked in design position, by 12 pre-arranged of geotextiles apart from land skew back slope slope
The position at 50 to 60 meters of bottom, silt operation ship 11 are connect with geotextiles 12 by silt delivery hose 13,11 He of silt operation ship
Silt delivery hose 13 injects silt to geotextiles 12 and it is trapezoidal successively to stack into vertical section after geotextiles 12 fill silt
Confferdam and dyke-dam 2,2 both ends of confferdam and dyke-dam are supported in land skew back slope two sides, and cofferdam region is constituted；
Second step, the 3 surfacing operation of land skew back slope and makes slope surface, and 4 one end of submarine pipeline passes through dilatory operation
Mode passes through confferdam and dyke-dam 2, and the landing stage of scaffold 5 and loop wheel machine 6 are seated in the region of cofferdam；
Third step, in the region of cofferdam by submarine pipeline 4 by the cofferdam region that is penetrated on the outside of confferdam and dyke-dam 2 one end with
The connection of 41 elbow end of slope tube lower horizontal section；
4th step, by the straight pipe end of slope tube lower horizontal section 41 and 42 straight pipe of slope tube upper curved section in the region of cofferdam
One end connection；
5th step, the elbow section in the region of cofferdam by slope tube upper curved section 4c away from the one end slope tube lower horizontal section 4b are installed
Blank flange 8；
6th step, silt backfill operation, carry out backfill protection to 4 installation position of submarine pipeline, complete land restoration operation.
Pipe installation method in cofferdam region of the present invention, in which:
Silt operation ship 11 is first located in 100 ± 20 meters of cofferdam areas outside of position by the first step；Geotextiles 12 according to
2 position pre-arranged of confferdam and dyke-dam；Silt is delivered to geotextiles 12, is full of by silt operation ship 11 by silt delivery hose 13
About 12 geotextiles of silt successively stack into the trapezoidal confferdam and dyke-dam 2 of vertical section, which supports on land
Skew back slope two sides constitute cofferdam region；The height of the trapezoidal confferdam and dyke-dam 2 is 5 to 6 meters, and the width of upper end is 9 to 12 meters, under
Holding width is 15 to 20 meters, and length is 60 to 80 meters；After silt operation ship 11 completes cofferdam operation, by water pump by cofferdam region
Interior seawater is removed to 2 outside of confferdam and dyke-dam, drying operation environment in the region of cofferdam is formed, as shown in Fig. 1, Figure 1A, Figure 1B；
Second step pre-processes land skew back slope 3, slope leveling, realizes that loop wheel machine enters safely construction site；Together
When, guarantee that the included angle A between land skew back slope 3 and sea level is 15 to 20 degree；Slope tube lower horizontal section is determined according to ramp angles
41 angles of bend are that 180 degree subtracts angle degree between land skew back slope 3 and sea level；4 one end of submarine pipeline passes through dilatory side
Formula enters in the region of cofferdam, and the landing stage of scaffold 5 is seated in submarine pipeline 4 and is located at one end end end in the region of cofferdam, and loop wheel machine 6 is in place
Construction location in the region of cofferdam, as shown in Figure 2；
Third step, with button wirerope 71 and jack 72 first on the tube body of slope tube lower horizontal section 41, by adjusting jack
41 straight pipe of slope tube lower horizontal section and 3 slope of land skew back slope are realized in 72 length and then the position for adjusting slope tube lower horizontal section 41
Face is in parallel shape, as shown in Figure 3；Then, adjustment loop wheel machine 6 transfers slope tube lower horizontal section 41, realizes 41 bend pipe of slope tube lower horizontal section
Section is located at that one end in the region of cofferdam is axially aligned with submarine pipeline 4, the bend loss and submarine pipeline 4 of completion slope tube lower horizontal section 41
Group to operation, then the landing stage of scaffold 5 carry out weld job, as shown in Figure 4；
4th step, after slope tube lower horizontal section 41 is first fixed on land skew back slope 3, then movable Scaffold job platform 5
To the end of 41 straight pipe of slope tube lower horizontal section, the position of loop wheel machine 6 is then adjusted, and by adjusting rope rig 71 and jack
72 decentralization slope tube upper curved sections 42, make 42 straight pipe of slope tube upper curved section and land skew back slope 3 be located at slope tube lower horizontal section 41 straight
The slope surface of the above position in pipeline section end is in parallel shape, as shown in Figure 5；Loop wheel machine 6 is adjusted again, transfers slope tube upper curved section 42, is realized
42 straight pipe of slope tube upper curved section is axially aligned with slope tube lower horizontal section 41 straight pipe, two pipe ends, completes slope tube upper curved section 42
The group of straight pipe and 41 straight pipe pipe end of slope tube lower horizontal section is to operation, finally positioned at 42 straight pipe of slope tube upper curved section and tiltedly
Weld job is carried out on the landing stage of scaffold 5 of 41 two pipe end junctions of straight pipe of standpipe lower horizontal section, as shown in Figure 6；
5th step, the elbow section in the region of cofferdam by slope tube upper curved section 42 away from 41 one end of slope tube lower horizontal section are installed
Blank flange 8 is protected with the elbow section to 42 one end of slope tube upper curved section, is entered from 42 pipe end of slope tube upper curved section miscellaneous
Object is constructed, as shown in Figure 7 convenient for subsequent terrestrial pipeline；
6th step, after the weld job for completing two slope tubes, to slope tube lower horizontal section 41, slope tube upper curved section 42 and
The operating area of submarine pipeline 4 carries out coarse sand and native soil layer backfills operation, protects to submarine pipeline 4, and restore land side
Original appearance.
The content not being illustrated in the present embodiment is the prior art, and so it will not be repeated.
The advantages of pipe installation method in cofferdam region of the present invention: by cofferdam, anhydrous work is fabricated in construction area
Industry environment, loop wheel machine are located within water-less environment；Submarine pipeline enters pipeline one end in the region of cofferdam by dilatory mode,
Under loop wheel machine cooperation, welding is grouped by slope tube lower horizontal section and slope tube lower horizontal section upper curved section and submarine pipeline, avoids
Using operation ship, construction cost is reduced, that realizes pipeline lands safely operation.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
Claims (2)
1. the pipe installation method in a kind of cofferdam region, which comprises the following steps:
The first step, silt operation ship (11) are docked in design position, by geotextiles (12) pre-arranged apart from land skew back slope slope
The position at 50 to 60 meters of bottom, silt operation ship (11) are connect with geotextiles (12) by silt delivery hose (13), silt operation
Ship (11) and silt delivery hose (13) are successively stacked into after geotextiles (12) fill silt to geotextiles (12) injection silt
The trapezoidal confferdam and dyke-dam of vertical section (2), confferdam and dyke-dam (2) both ends are supported in land skew back slope two sides, and cofferdam region is constituted；
Second step, land skew back slope (3) surfacing operation and makes slope surface, and submarine pipeline (4) one end passes through dilatory operation
Mode passes through confferdam and dyke-dam (2), and the landing stage of scaffold (5) and loop wheel machine (6) are seated in the region of cofferdam；
Third step, in the region of cofferdam by submarine pipeline (4) by the cofferdam region that penetrates on the outside of confferdam and dyke-dam (2) one end with
The connection of slope tube lower horizontal section (41) elbow end；
4th step, by the straight pipe end of slope tube lower horizontal section (41) and slope tube upper curved section (42) straight pipe in the region of cofferdam
One end connection；
5th step, the elbow section in the region of cofferdam by slope tube upper curved section (4c) away from the one end slope tube lower horizontal section (4b) are installed
Blank flange (8)；
6th step, silt backfill operation, carry out backfill protection to submarine pipeline (4) installation position, complete land restoration operation.
2. the pipe installation method in cofferdam region according to claim 1, which is characterized in that
Silt operation ship (11) is first located in 100 ± 20 meters of cofferdam areas outside of position by the first step；Geotextiles (12)
According to confferdam and dyke-dam (2) position pre-arranged；Silt is delivered to geotechnique by silt delivery hose (13) by silt operation ship (11)
Cloth (12), the geotextiles (12) full of silt successively stack into the trapezoidal confferdam and dyke-dam of vertical section (2), the confferdam and dyke-dam up and down
(2) both ends are supported in land skew back slope two sides, constitute cofferdam region；
The height of the trapezoidal confferdam and dyke-dam (2) is 5 to 6 meters, and the width of upper end is 9 to 12 meters, and lower end width is 15 to 20 meters,
Length is 60 to 80 meters；
After silt operation ship (11) completes cofferdam operation, the seawater in the region of cofferdam is removed to confferdam and dyke-dam (2) by water pump
Outside forms drying operation environment in the region of cofferdam；
The second step pre-processes land skew back slope (3), slope leveling, realizes that loop wheel machine enters safely construction site；Together
When, guarantee that the angle (A) between land skew back slope (3) and sea level is 15 to 20 degree；It is determined under slope tube according to ramp angles
Curved segment (41) angle of bend is that 180 degree subtracts angle degree between slope (3) and sea level；Submarine pipeline (4) one end is by dragging
Drawing mode enters in the region of cofferdam, and the landing stage of scaffold (5) is seated in submarine pipeline (4) and is located at one end end end in the region of cofferdam,
Loop wheel machine (6) is located in the construction location in the region of cofferdam；
The third step passes through tune with button wirerope (71) and jack (72) first on the tube body of slope tube lower horizontal section (41)
Slope tube lower horizontal section (41) straight pipe and land are realized in the length of whole jack (72) and then the position for adjusting slope tube lower horizontal section (41)
Ground skew back slope (3) slope surface is in parallel shape (as shown in Figure 3)；Then, adjustment loop wheel machine (6) decentralization slope tube lower horizontal section (41) is realized
It is axially aligned that slope tube lower horizontal section (41) bend loss and submarine pipeline (4) are located at one end in the region of cofferdam, completes curved under slope tube
The bend loss of section (41) and the group of submarine pipeline (4) carry out weld job to operation, then in the landing stage of scaffold (5)；
4th step, after slope tube lower horizontal section (41) is first fixed on land skew back slope (3), then movable Scaffold operation horizontal
Platform (5) then adjusts the position of loop wheel machine (6) to the end of slope tube lower horizontal section (41) straight pipe, and by adjusting steel wire cable
Have (71) and jack (72) decentralization slope tube upper curved section (42), makes slope tube upper curved section (42) straight pipe and land skew back slope (3)
Slope surface positioned at slope tube lower horizontal section (41) above position in straight pipe end is in parallel shape, (as shown in Figure 5)；Loop wheel machine is adjusted again
(6), slope tube upper curved section (42) are transferred, realizes slope tube upper curved section (42) straight pipe and slope tube lower horizontal section (41) straight pipe two
A pipe end is axially aligned, completes the group of slope tube upper curved section (42) straight pipe and slope tube lower horizontal section (41) straight pipe pipe end to behaviour
Make, finally in the foot for being located at slope tube upper curved section (42) straight pipe and slope tube lower horizontal section (41) two pipe end junctions of straight pipe
Hand cradle platform carries out weld job on (5)；
Slope tube upper curved section (42) are deviated from the elbow section of slope tube lower horizontal section (41) one end by the 5th step in the region of cofferdam
It installs blank flange (8), is protected with the elbow section to slope tube upper curved section (42) one end, from slope tube upper curved section (42)
Pipe end enters sundries, constructs convenient for subsequent terrestrial pipeline；
6th step, after the weld job for completing two slope tubes, to slope tube lower horizontal section (41), slope tube upper curved section (42)
And the operating area of submarine pipeline (4) carries out coarse sand and native soil layer backfills operation, protects to submarine pipeline (4), and extensive
Multiple land side original appearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910716295.5A CN110397793B (en) | 2019-08-05 | 2019-08-05 | Method for installing pipeline in cofferdam area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910716295.5A CN110397793B (en) | 2019-08-05 | 2019-08-05 | Method for installing pipeline in cofferdam area |
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| CN110397793A true CN110397793A (en) | 2019-11-01 |
| CN110397793B CN110397793B (en) | 2021-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212075A (en) * | 2020-10-14 | 2021-01-12 | 浙江世润建创科技发展有限公司 | Construction method of crossing structure for steel pipe to cross river |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290829A (en) * | 2000-11-14 | 2001-04-11 | 胜利石油管理局工程建设一公司三分公司 | Pipe dragging method and special device for seashore landing pipeline |
| US20090297280A1 (en) * | 2008-05-28 | 2009-12-03 | Mcbride Todd | Shiftable Fluid Diversion Conduit |
| CN103123017A (en) * | 2012-11-23 | 2013-05-29 | 上海市基础工程有限公司 | Shallow sea long-distance submarine pipeline tension-free laying construction technology |
| CN104727325A (en) * | 2015-02-12 | 2015-06-24 | 宁波高新区围海工程技术开发有限公司 | Building method for sea wall for shoal reclamation |
| CN105387274A (en) * | 2015-11-24 | 2016-03-09 | 湖南大麓科技有限公司 | Underground pipeline repairing assisting method, device and system |
| CN106015737A (en) * | 2016-06-14 | 2016-10-12 | 中国葛洲坝集团第工程有限公司 | Construction method for integral installation of river-crossing sinking pipe |
| CN206512729U (en) * | 2016-12-05 | 2017-09-22 | 中国电建集团华东勘测设计研究院有限公司 | The stable big sand pocket cofferdam structure of ship type on soft soil foundation |
| CN109184559A (en) * | 2018-09-17 | 2019-01-11 | 海洋石油工程股份有限公司 | The login method of submarine pipeline |
| 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 |
-
2019
- 2019-08-05 CN CN201910716295.5A patent/CN110397793B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290829A (en) * | 2000-11-14 | 2001-04-11 | 胜利石油管理局工程建设一公司三分公司 | Pipe dragging method and special device for seashore landing pipeline |
| US20090297280A1 (en) * | 2008-05-28 | 2009-12-03 | Mcbride Todd | Shiftable Fluid Diversion Conduit |
| CN103123017A (en) * | 2012-11-23 | 2013-05-29 | 上海市基础工程有限公司 | Shallow sea long-distance submarine pipeline tension-free laying construction technology |
| CN104727325A (en) * | 2015-02-12 | 2015-06-24 | 宁波高新区围海工程技术开发有限公司 | Building method for sea wall for shoal reclamation |
| CN105387274A (en) * | 2015-11-24 | 2016-03-09 | 湖南大麓科技有限公司 | Underground pipeline repairing assisting method, device and system |
| CN106015737A (en) * | 2016-06-14 | 2016-10-12 | 中国葛洲坝集团第工程有限公司 | Construction method for integral installation of river-crossing sinking pipe |
| CN206512729U (en) * | 2016-12-05 | 2017-09-22 | 中国电建集团华东勘测设计研究院有限公司 | The stable big sand pocket cofferdam structure of ship type on soft soil foundation |
| CN109184559A (en) * | 2018-09-17 | 2019-01-11 | 海洋石油工程股份有限公司 | The login method of submarine pipeline |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 王立军、余志峰等: "海底管道施工方法研究", 《管道技术与设备》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112212075A (en) * | 2020-10-14 | 2021-01-12 | 浙江世润建创科技发展有限公司 | Construction method of crossing structure for steel pipe to cross river |
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| CN110397793B (en) | 2021-06-29 |
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