CN104565537A - Synchronous laying and buried depth construction method for seabed glass reinforced plastic pipelines - Google Patents
Synchronous laying and buried depth construction method for seabed glass reinforced plastic pipelines Download PDFInfo
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- CN104565537A CN104565537A CN201410671552.5A CN201410671552A CN104565537A CN 104565537 A CN104565537 A CN 104565537A CN 201410671552 A CN201410671552 A CN 201410671552A CN 104565537 A CN104565537 A CN 104565537A
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- pipe
- anchor
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- pipeline
- ship
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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
-
- 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
- F16L1/20—Accessories therefor, e.g. floats, weights
- F16L1/235—Apparatus for controlling the pipe during laying
Abstract
The invention relates to a synchronous laying and buried depth construction method for glass reinforced plastic pipelines. According to the method, a special pipelaying barge, a pipeline trencher and a steel stinger which is connected between the pipelaying barge and the pipeline trencher are adopted; after the glass reinforced plastic pipelines are inserted and connected to the pipelaying barge by sections, then are laid to a seabed by virtue of the stinger and directly enter the middle of two groups of hydraulic trenching cutters of a submarine trencher; when the trencher performs trenching, the pipelines are sunk to the bottom of a groove, and then the pipelines are buried under the seabed by virtue of natural accretion. The method can ensure the continuous construction of the whole pipelines, all joints are inserted on a water surface, so that underwater flange joints of the pipelines in the sea are avoided; great manpower, material resources and environmental damage are saved, and further the problem of rapid accretion in excavation of an underwater trench is solved; pipelaying construction and trenching construction are combined into a whole, so that the construction efficiency is greatly improved and the construction cost is saved.
Description
Technical field
The present invention relates to a kind of seabed fiber reinforced plastic pipe and synchronously lay buried depth method of construction.
Background technique
At present, long distance seafloor water delivery pipe road, all based on steel pipe, adopts steel pipe internal and external anti-corrosive, is first routed to seabed and then carries out buried depth operation.And steel pipe gets rusty easily, fouling, corrosion can be produced in seabed.
Adopt novel glass fibre reinforced plastics as tubing, it has explosion-proof, shockproof, anticorrosion, nontoxic, tasteless, the feature such as non-corrosive, non-scaling, long service life, extensive use in urban groundwater pipe network system on land.
Owing to having above-mentioned advantage, fiber reinforced plastic pipe being used for submarine pipeline will be the scheme had superiority very much, but, fiber reinforced plastic pipe is applied to submarine pipeline field, remains in following technological difficulties:
1, fiber reinforced plastic pipe pliability is lower, is difficult to be prefabricated into continuous long tube section and carries out transportation by driving-sinking construction, causes the flanged joint that needs to connect too many under water, has a strong impact on system reliability and efficiency of construction.
2, fiber reinforced plastic pipe deadweight is comparatively light, in work progress, receives the ectocines such as construction area stormy waves, ocean current larger.
3, the groove under water that after traditional first trench digging, laying construction technique is excavated in advance easily caves in, and affects buried depth of pipeline quality.
4, comparatively steel pipe is lower for fiber reinforced plastic pipe intensity, cannot guarantee under pipeline inherently safe prerequisite, provides the guiding force be enough to as the control of seabed trenching machine direction of advance, therefore can not adopt the first deposited rear buriing engineering method adopted in the steel pipe trench digging construction of seabed.
Summary of the invention
The present invention will provide a kind of seabed fiber reinforced plastic pipe synchronously to lay buried depth method of construction, for solving the problems of the technologies described above, the application area of fiber reinforced plastic pipe is expanded to submarine pipeline construction field.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of seabed fiber reinforced plastic pipe synchronously lays buried depth method of construction, and concrete steps are as follows:
(1) pipe laying prepares
Pipeline-laying installation by special pipe laying construction ship, pipeline ditching machine, connect steel pipe support rack between pipe laying barge and ditching machine, before construction, the said equipment need be in place, and is connected.
(2) pipeline section splicing is in place
After fiber reinforced plastic pipe is transported to job site, pipeline paving pipe working boat in lifting, is stored at heap area under control, during construction by lifting pipeline on launcher, dock in joint location and the pipeline section socket joint of having laid buried depth, and balancing weight be installed;
(3) pipeline section buried depth is to sea bed
Starting trenching machine by receiving strand traction anchor steel wire, pipeline section being laid below buried depth to sea bed through launcher, pipe support rack and trenching machine, and carries out buried depth of pipeline monitoring; While this process, injecting seawater by being arranged on to flow automatically in pipeline marine connecting tube, guaranteeing that pipe inland sea water level is consistent with sea level, to guarantee pipeline not floating; Pipe laying construction ship configuration positioning and directing DGPS navigation system, for determining accommodation.
Above-mentioned pipeline section buried depth to the location of the working boat in sea bed and shifting process is:
(1) layout of working boat anchor position:
Eight anchors are symmetrical respectively to be thrown in pipe laying working boat port and starboard both sides, and wherein four in laying barge stem, and four at laying barge afterbody;
(2) setting of winch:
Arrange one in bow side and adopt Frequency Converter Control hauling speed, main traction windlass, main traction anchor casts on Submarine Pipeline Design axis;
(3) weigh anchor and cast anchor:
After the fiber reinforced plastic pipe of a mooring anchor distance has been laid, four anchors have risen in pipe laying working boat backwater side by anchor ship from front to back successively, cast on new position;
(4) twist anchor and move ship:
After the pipeline section socket joint on pipe laying barge connects, ponton manoeuvring winch twist traction anchor hawser, eight ponton manoeuvring winches main rack winch coordinates the left-right deviation of twist anchor hawser or loose wide anchor hawser adjustment laying barge simultaneously and controls the speed of ship advance, and ship is advanced along design route direction all the time in the process of advancing; Often twist an anchor, laying barge advances a mooring anchor distance, then carries out the renewal of anchor position.
Buried depth of pipeline monitoring in above-mentioned pipeline section buried depth to sea bed process:
Before formal hinge anchor moves ship, according to the data of buried depth monitoring system, adjust tractive force, hauling speed, water-aspirator pressure at any time, guarantee that the depth of burying of pipeline section reaches designed depth.
Special operation condition operation of the present invention:
(1) pipe abandon construction
When occurring that the atrocious weather such as typhoon or cool air and sea conditions threaten pipeline safe, utilize the lifting A cabinet frame on ship that pipeline section entirety on pipe support rack and pipe support rack is hung hull and slowly sinking to seabed;
For preventing pipe support rack from producing displacement because of the impact of wind, wave, stream factor, damaging even bending, respectively casting a positioning anchor in a distance, pipe support rack both sides in advance, under water by diver anchor steel wire being connected with pipeline section, tightening up; In pipe abandon work progress, with DGPS location, accurately record pipe abandon accommodation continuously, pipeline section position, anchor position;
(2) pipe construction is picked up
When sea conditions takes a turn for the better, carry out pipeline recovery: first coordinated by diver and untied by the anchor steel wire be connected with pipeline section, and lifting steel wire is set on pipe support rack under water; Pipe laying construction ship utilizes DGPS to locate, route when workboat and pipe support rack sinking is kept on the same line, the lifting steel wire on pipe support rack is connected with the gin pole on workboat, start lifting A cabinet frame, pipe support rack is hung out the water surface, and is reinstalled on workboat.
The invention has the beneficial effects as follows:
1, fiber reinforced plastic pipe pipeline section connects employing spigot-and-socket joint, and omnidistance submarine pipe joint all completes on pipe laying barge, there is not the work of submarine pipeline jiont treatment, and joint quality is reliable, and easy construction, fast.
2, adopt special submarine pipeline ditching machine, fiber reinforced plastic pipe is laid buried depth work and is synchronously carried out, and pipeline is directly routed in the groove of seabed, and efficiency of construction is high, and the impact of tubine inter process groove landslide after avoiding traditional first excavation seabed groove.Avoid the destruction that employing is first excavated a large amount of human and material resources needed for rear tubine and caused environment, also solve channel excavation under water simultaneously and to back-silt problem faster;
3, laying barge and burying barges are united two into one, as long as operation ship just achieves laying and the buried depth of pipeline, greatly saved construction cost;
4, pipeline arrives seabed once, is directly embedded in groove, avoids pipeline within the time of sea bed superficial residence, and current, on the stable impact brought of pipeline, it also avoid the risk being subject to the extraneous factor impacts such as anchor evil during non-buried depth simultaneously;
5, shallow sea no-station pole canopy tubine method is adopted to carry out the laying construction of pipeline.
6, connect pipe laying barge and seabed trenching machine with steel pipe support rack, in fiber reinforced plastic pipe process of deployment, whole process is subject to pipe support rack protection, is not subject to wave in construction area, ocean current affects.
Accompanying drawing explanation
Fig. 1 is construction process block diagram of the present invention;
Fig. 2 is laying barge schematic diagram;
Fig. 3 is pipe support rack schematic diagram;
Fig. 4 is burying machine schematic diagram;
Fig. 5 is pipe abandon schematic diagram;
Fig. 6 picks up pipe operation schematic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
As shown in Figure 1, seabed of the present invention fiber reinforced plastic pipe synchronously lays buried depth method of construction.Comprise:
1. the deposited buried construction sequence of pipeline section:
Before the segment pipe laying construction of beginning deep-sea, coordinate pipe laying work ship that pipe support rack and hydraulic machinery burying machine are installed by construction less important work ship (anchor ship).
After fiber reinforced plastic pipe is transported to job site, pipeline paving pipe working boat in lifting, is stored at heap area under control, during construction by lifting pipeline on launcher, dock in joint location and the pipeline section socket joint of having laid buried depth, and balancing weight be installed;
Start trenching machine by receiving strand traction anchor steel wire, pipeline section is laid below buried depth to sea bed through launcher, pipe support rack and trenching machine; While this process, injecting seawater by being arranged on to flow automatically in pipeline marine connecting tube, guaranteeing that pipe inland sea water level is consistent with sea level, to guarantee pipeline not floating; Pipe laying construction ship configuration positioning and directing DGPS navigation system, for determining accommodation.
2. the operation of mooring system:
The layout of anchor position: 8 anchors are symmetrical respectively to be thrown in pipe laying barge port and starboard both sides, wherein 4 in laying barge stem, and 4 arrange a main rack winch in bow side at laying barge afterbody simultaneously, adopt Frequency Converter Control hauling speed.Main traction anchor casts on piping design axis.
Weigh anchor and cast anchor: after 1 section of pipe has been laid, the anchor position of pipe laying barge should adjust.4 anchors rise in pipe laying barge backwater side by anchor ship from front to back successively, cast on new position.Once weigh anchor, the process of casting anchor terminates.
3. twist anchor and move ship:
After the pipeline section on laying barge completes connection, just start to carry out moving the operation of ship tubine, ponton manoeuvring winch twist traction anchor hawser, 8 ponton manoeuvring winches, 1 main rack winch coordinates twist anchor hawser or loose wide anchor hawser to adjust the left-right deviation of laying barge and to control the speed of ship advance simultaneously, and ship is advanced along design route direction all the time in the process of advancing.Often twist an anchor, laying barge advances an anchor position, then carries out the renewal of anchor position.4. buried depth of pipeline and monitoring: before formal hinge anchor moves ship, start the high-pressure water pump on workboat and buried depth monitoring system, carry out pipe laying construction while tubine.Commanding, according to the data of buried depth monitoring system, adjusts tractive force, hauling speed, water-aspirator pressure etc. at any time, guarantees that the depth of burying of pipeline section reaches designing requirement.
The present invention's laying barge used (shown in Fig. 2):
According to the special circumstances of the present invention's construction, adopt a laying barge being exclusively used in this engineering construction.
The hull of laying barge is a box non-self-propelled covered lighter.Laying barge set pipe laying system and burying system.The paving system of pipeline includes storage area under control, mooring system, pipeline launcher, joint platform, the pipeline lifting erection unit of horizontal and vertical transport system, DGPS global positioning system, pipe support rack and fixing device aboard ship; The burying system of pipeline comprises high pressure water supply system, underwater air inhales mud system and buried depth of pipeline underwater monitoring system.Ship arranges centralized control command post simultaneously, be convenient to centralized control and the commander of whole piece ship.
Pipe support rack of the present invention (shown in Fig. 3):
The pipe support rack effect of pipe support rack of the present invention and conventional pipe laying barge is different, it not only serves the effect that conventional pipe support rack holds the unsettled pipeline section between laying barge to seabed during tubine, be connected with burying machine bottom it simultaneously, the high pressure water providing buried depth of pipeline to need and the passage of high-pressure air, also the tractive force of laying barge is passed to burying machine simultaneously, make burying machine and laying barge advanced in unison, realize synchronous effect of laying buried depth.
Pipe support rack of the present invention is rigid straight type, one end and laying barge afterbody hinged, the other end and burying machine hinged.Along with water depth ratio, can adjusting angle.Pipe support rack is provided with slideway, holds pipeline to be deposited, pipeline to be deposited is mapped to seabed by slideway paving simultaneously.
Because pipe support rack is subject to the load of Vertical Load (weight of unsettled section of pipeline section), horizontal loading (lateral current effect), axial force (tractive force) and wind, wave.Therefore, must consider have enough strength and stiffness to meet the combination of various operating mode when designing, needing to consider that the profile of pipe support rack reduces lateral current resistance as far as possible simultaneously.
Burying machine of the present invention (shown in Fig. 4)
High-pressure water pump on burying machine laying barge is broken ground by the pipeline supply nozzle jetting buried underground on arm on pipe support rack, inhales mud system discharged by the mud in groove by the air of high-pressure rubber pipe supply buried depth arm afterbody.
Burying machine is connected by pipe support rack with workboat, and connector element adopts two-way articulated form, and it can ensure the rotation of vertical direction between pipe support rack and burying machine, also can ensure the rotation of substantially horizontal between pipe support rack and burying machine.The minute movement (vertical and horizontal) avoided due to laying barge impacts to the stable of burying machine.
Burying machine equipment electrical measurement sensed system.The geodetic coordinates, pipeline deviation, deposited buried duct length etc. of the depth of burying of main monitoring submarine pipeline, the speed of travel of burying machine, the burying machine all around discrepancy in elevation, tractive force, water-aspirator pressure, the depth of water, deposited buried pipeline.
The connection of pipeline of the present invention:
Fiber reinforced plastic pipe pipeline section connects employing spigot-and-socket joint, and omnidistance submarine pipe joint all completes on pipe laying barge, there is not the work of submarine pipeline jiont treatment, and joint quality is reliable, and easy construction, fast.
Special operation condition operation of the present invention:
1, pipe abandon construction
When occurring that the atrocious weather such as typhoon or cool air and sea conditions threaten pipeline safe, utilize the lifting A cabinet frame on ship that pipeline section entirety on pipe support rack and pipe support rack is hung hull and slowly sinking to seabed;
For preventing pipe support rack from producing displacement because of the impact of wind, wave, stream factor, damaging even bending, respectively casting a positioning anchor in a distance, pipe support rack both sides in advance, under water by diver anchor steel wire being connected with pipeline section, tightening up; In pipe abandon work progress, with DGPS location, accurately record pipe abandon accommodation continuously, pipeline section position, anchor position; (shown in Fig. 5)
2, pipe construction is picked up
When sea conditions takes a turn for the better, carry out pipeline recovery: first coordinated by diver and untied by the anchor steel wire be connected with pipeline section, and lifting steel wire is set on pipe support rack under water; Pipe laying construction ship utilizes DGPS to locate, route when workboat and pipe support rack sinking is kept on the same line, the lifting steel wire on pipe support rack is connected with the gin pole on workboat, start lifting A cabinet frame, pipe support rack is hung out the water surface, and is reinstalled on workboat.(shown in Fig. 6)
Claims (4)
1. seabed fiber reinforced plastic pipe synchronously lays a buried depth method of construction, it is characterized in that, concrete steps are:
(1) pipe laying prepares
Before construction, special pipe laying construction ship, pipeline ditching machine, the steel pipe support rack connected between pipe laying barge and ditching machine are in place, and are connected;
(2) pipeline section splicing is in place
During construction, fiber reinforced plastic pipe is lifted on launcher, in joint location and the pipeline section socket joint docking of having laid buried depth, and balancing weight is installed;
(3) pipeline section buried depth is to sea bed
Starting trenching machine by receiving strand traction anchor steel wire, pipeline section being laid below buried depth to sea bed through launcher, pipe support rack and trenching machine, and carries out buried depth of pipeline monitoring; While this process, injecting seawater by being arranged on to flow automatically in pipeline marine connecting tube, guaranteeing that pipe inland sea water level is consistent with sea level, to guarantee pipeline not floating; Pipe laying construction ship configuration positioning and directing DGPS navigation system, for determining accommodation.
2. seabed according to claim 1 fiber reinforced plastic pipe synchronously lays buried depth method of construction, it is characterized in that: described pipeline section buried depth to the location of the pipe laying construction ship in sea bed and shifting process is:
(1) layout of pipe laying construction ship anchor position:
Eight anchors are symmetrical respectively to be thrown in pipe laying construction ship port and starboard both sides, and wherein four in tubine workboat stem, and four at tubine workboat afterbody;
(2) setting of winch:
Arrange the hauling speed that adopts the main traction windlass of Frequency Converter Control in bow side, main traction anchor casts on the axis of Submarine Pipeline Design;
(3) weigh anchor and cast anchor:
After the fiber reinforced plastic pipe of a mooring anchor distance has been laid, four anchors have risen in pipe laying construction ship backwater side by anchor ship from front to back successively, cast on new position;
(4) twist anchor and move ship:
After the pipeline section socket joint on pipe laying construction ship connects, ponton manoeuvring winch twist traction anchor hawser, eight ponton manoeuvring winches main rack winch coordinates the left-right deviation of twist anchor hawser or loose wide anchor hawser adjustment laying barge simultaneously and controls the speed of ship advance, and pipe laying construction ship is advanced along design route direction all the time in the process of advancing; Often twist an anchor, pipe laying construction ship advances a mooring anchor distance, then carries out the renewal of anchor position.
3. seabed according to claim 1 fiber reinforced plastic pipe synchronously lays buried depth method of construction, it is characterized in that: in described pipeline section buried depth to sea bed process, buried depth of pipeline monitoring method is: before formal hinge anchor moves ship, according to the data of buried depth monitoring system, adjust tractive force, hauling speed, water-aspirator pressure at any time, guarantee that the depth of burying of pipeline section reaches designed depth.
4. seabed according to claim 1 fiber reinforced plastic pipe synchronously lays buried depth method of construction, it is characterized in that, concrete job step when running into special operation condition in said method is:
(1) pipe abandon construction
When occurring that the atrocious weather such as typhoon or cool air and sea conditions threaten pipeline safe, utilize the lifting A cabinet frame on ship that pipeline section entirety on pipe support rack and pipe support rack is hung hull and slowly sinking to seabed; For preventing pipe support rack from producing displacement because of the impact of wind, wave, stream factor, damaging even bending, respectively casting a positioning anchor in a distance, pipe support rack both sides in advance, under water by diver anchor steel wire being connected with pipeline section, tightening up; In pipe abandon work progress, with DGPS location, accurately record pipe abandon accommodation continuously, pipeline section position, anchor position;
(2) pipe construction is picked up
When sea conditions takes a turn for the better, carry out pipeline recovery: first coordinated by diver and untied by the anchor steel wire be connected with pipeline section, and lifting steel wire is set on pipe support rack under water; Pipe laying construction ship utilizes DGPS to locate, route when workboat and pipe support rack sinking is kept on the same line, the lifting steel wire on pipe support rack is connected with the gin pole on workboat, start lifting A cabinet frame, pipe support rack is hung out the water surface, and is reinstalled on pipe laying construction ship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671552.5A CN104565537A (en) | 2014-11-21 | 2014-11-21 | Synchronous laying and buried depth construction method for seabed glass reinforced plastic pipelines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671552.5A CN104565537A (en) | 2014-11-21 | 2014-11-21 | Synchronous laying and buried depth construction method for seabed glass reinforced plastic pipelines |
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| CN104565537A true CN104565537A (en) | 2015-04-29 |
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| CN201410671552.5A Pending CN104565537A (en) | 2014-11-21 | 2014-11-21 | Synchronous laying and buried depth construction method for seabed glass reinforced plastic pipelines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546217A (en) * | 2016-02-01 | 2016-05-04 | 上海市基础工程集团有限公司 | Pipeline supporting frame for laying construction of seabed pipeline and application method |
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|---|---|---|---|---|
| US3834169A (en) * | 1973-07-11 | 1974-09-10 | Brown & Root | Method and apparatus for laying large diameter pipeline segments offshore |
| US3911689A (en) * | 1973-09-19 | 1975-10-14 | Texaco Inc | Pipe laying vessel with stinger and method |
| CN101280862A (en) * | 2007-04-03 | 2008-10-08 | 上海市基础工程公司 | Seabed PE pipe rim spreading and imbedding construction method |
| CN102884353A (en) * | 2010-05-10 | 2013-01-16 | 塞彭公司 | Method of laying a pipeline from a laying vessel onto the bed of a body of water, and laying vessel |
-
2014
- 2014-11-21 CN CN201410671552.5A patent/CN104565537A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3834169A (en) * | 1973-07-11 | 1974-09-10 | Brown & Root | Method and apparatus for laying large diameter pipeline segments offshore |
| US3911689A (en) * | 1973-09-19 | 1975-10-14 | Texaco Inc | Pipe laying vessel with stinger and method |
| CN101280862A (en) * | 2007-04-03 | 2008-10-08 | 上海市基础工程公司 | Seabed PE pipe rim spreading and imbedding construction method |
| CN102884353A (en) * | 2010-05-10 | 2013-01-16 | 塞彭公司 | Method of laying a pipeline from a laying vessel onto the bed of a body of water, and laying vessel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105546217A (en) * | 2016-02-01 | 2016-05-04 | 上海市基础工程集团有限公司 | Pipeline supporting frame for laying construction of seabed pipeline and application method |
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Application publication date: 20150429 |
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