CN106015737B - The construction method of cross a river immersed tube integral installation - Google Patents
The construction method of cross a river immersed tube integral installation Download PDFInfo
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- CN106015737B CN106015737B CN201610413761.9A CN201610413761A CN106015737B CN 106015737 B CN106015737 B CN 106015737B CN 201610413761 A CN201610413761 A CN 201610413761A CN 106015737 B CN106015737 B CN 106015737B
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- Prior art keywords
- immersed tube
- pipe
- river
- riverbank
- pipeline
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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 a kind of construction method of cross a river immersed tube integral installation, comprises the following steps：In the riverbank pipe trench position on both sides riverbank, beat steel sheet pile and form cofferdam；Riverbank pipe trench is excavated in cofferdam with backhoe；River course pipe trench is excavated with the dredger with long-armed backhoe；Immersed tube pipeline is hung with two cranes, is coordinated with digging machine and immersed tube pipeline is moved in the pipe trench of riverbank, pressure pipe and backfill after the positioning of immersed tube pipeline commissioning；Cross a river immersed tube integral installation is realized by above step.By setting cofferdam in river bank with steel sheet pile, excavated with backhoe, the dredger of the long-armed backhoe of mating band excavates the scheme positioned at river course pipe trench among river course, compared with prior art, immersed tube pipeline can disposable whole body construction, cofferdam adapter need not be separately set after immersed tube Pipe installing in river two sides.Reduce difficulty of construction.
Description
Technical field
The present invention relates to Municipal Engineering Construction field, particularly a kind of construction method of cross a river immersed tube integral installation.
Background technology
At present, Municipal Engineering Construction field, sewage pipe, the construction of running water pipe river crossing, typically using cofferdam water conservancy diversion
Mode is constructed, and diversion channel is excavated in first cofferdam, is then carried out stringing, group to, welding etc. in construction part, is also taken and build two
Road barrage, drain the method that water carries out pipeline construction in dam.For the river for having navigation to require, it is logical interference to be present in the above method
The problem of ETS estimated time of sailing is longer.Also have using pipe-jacking technology river crossing, push pipe pipeline material is mostly rubber and plastic class, hot right at the scene
The problem of being connected into homogeneous tube, existing is that bearing capacity is poor, and mass defect is not easy to exclude, and cost is high.Municipal pipeline has passed through navigation
It is required that river, consider waterway standard for navigation after may also need to improve, piping laying depth often require exceed the water surface
More than 6 meters below, bigger difficulty is brought to Pipeline Crossing Program construction.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of construction method of cross a river immersed tube integral installation, immersed tube pipeline
Cofferdam adapter need not be separately set after installation in river two sides, general construction equipment and equipment can be used, construction site is required
It is not high.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of cross a river immersed tube integral installation is applied
Work method, comprises the following steps：
First, in the riverbank pipe trench position on both sides riverbank, beat steel sheet pile and form cofferdam；
2nd, riverbank pipe trench is excavated in cofferdam with backhoe；
3rd, river course pipe trench is excavated with the dredger with long-armed backhoe；
4th, after the completion of riverbank pipe trench and river course pipe canal digging, the setting cushion of rubble backfill is carried out；
5th, cushion construction finishes, and carries out immersed tube Pipe installing operation, and by immersed tube pipeline, assembled welding is integral at the scene,
The immersed tube pipe ends mouth of pipe is blocked using blind plate, and water inlet pipe and blast pipe are set on blind plate, is set on water inlet pipe and blast pipe
There is valve；
Before immersed tube Pipe installing, steel sheet pile is extracted, makes riverbank pipe trench water inlet；
6th, immersed tube pipeline is hung with two cranes, is coordinated with digging machine and immersed tube pipeline is moved in the pipe trench of riverbank, immersed tube pipe
Valve on the water inlet pipe and blast pipe at road both ends is closed mode, and one end of immersed tube pipeline is put to the water surface, utilizes dredger handle
Immersed tube pipeline is extradited to river opposite bank；Correction is sling with two sides crane again, is put to the river course pipe trench dug and the position of riverbank pipe trench,
Start sinking of pouring water；
7th, pressure pipe and backfill after the positioning of immersed tube pipeline commissioning；
Cross a river immersed tube integral installation is realized by above step.
In preferable scheme, described steel sheet pile is Larsen steel sheet pile, and cofferdam, steel are being formed close to the position in riverbank sideline
Sheet pile is made up of the first steel sheet pile of transverse direction and the second steel sheet pile of longitudinal direction.
In preferable scheme, the spacing between the first steel sheet pile meets the requirement of backhoe operation in cofferdam.
In preferable scheme, it be ranked first according to riverbank pipe canal digging depth two and bracing members be set between steel sheet pile.
In preferable scheme, according to slope than 1 during the pipe canal digging of riverbank:2 ratios are handled along conduit axis direction slope.
In preferable scheme, in step 3, dredger is constructed along river course pipe trench central axis from two banks toward the korneforos heart；
River course pipe canal digging cross section is inverted trapezoidal, and slope is than 1：2~1：4, to prevent Ha Noi mud to having dug in river course pipe trench
Slip into, using secondary cleaning groove；
Channel excavation bottom absolute altitude is more than design bottom 0.3 ~ 0.5m of absolute altitude, and bottom absolute altitude is detected with lining rope.
In preferable scheme, in step 4, after equipment material casting, paved bed course compound by diver.
In preferable scheme, in step 5, immersed tube pipeline is located at the upper flat sections of river two sides, tilting section and positioned at river bed
Assembled welding is integral at the scene for flat section, butt welding of steel tube seam bottom argon arc welding weldering, manual electric arc welding welding.
In preferable scheme, in step 6, after the adjustment of immersed tube pipeline location is correct, open immersed tube pipe ends water inlet pipe and
Valve on blast pipe, to the water pump water filling of immersed tube pipe ends water inlet pipe, when the pipeline commissioning water surface dipped to water inlet pipe, make
Pipeline is intake naturally；Other end smooth in exhaust when pipeline is intake at one end, the generation of anti-vapour lock and water hammer.
In preferable scheme, in step 7, immersed tube finishes, and after qualified by inspection, carries out rubble backfill throwing, rubble backfill
More than upper surface beared down on one using 1 block every meter equally distributed block of stone.
A kind of construction method of cross a river immersed tube integral installation provided by the invention, enclosed by being set in river bank with steel sheet pile
Weir, excavated with backhoe, the dredger of the long-armed backhoe of mating band excavates the scheme positioned at river course pipe trench among river course, and existing
Technology is compared, immersed tube pipeline can disposable whole body construction, cofferdam adapter need not be separately set after immersed tube Pipe installing in river two sides.
Because riverbank pipe trench of the river course pipe trench among river course with respect to bank during grooving is less susceptible to collapse, therefore using the present invention
Method also reduce difficulty of construction.Present invention is particularly suitable for municipal tap water pipe and sewage pipe to have passed through navigation requirement and width
River construction less than 100 meters.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural representation of immersed tube pipeline in the present invention.
Fig. 2 is the sectional schematic diagram of river course pipe trench in the present invention.
Fig. 3 is the arrangement schematic diagram of river course pipe trench, riverbank pipe trench and steel sheet pile in the present invention.
Structural representation when Fig. 4 is immersed tube pipeline integral hoisting in the present invention.
In figure：Immersed tube pipeline 1, upper flat section 1a, tilting section 1b, flat section 1c, rubble backfill 2, block stone 3, the first steel sheet pile 4,
Second steel sheet pile 4a, riverbank sideline b, river course pipe trench c, riverbank pipe trench c1, existing riverbed absolute altitude d, lift steel wire rope e, hoist lifting hook
f。
Embodiment
In Fig. 1 ~ 4, a kind of construction method of cross a river immersed tube integral installation, comprise the following steps：
First, in the riverbank pipe trench c1 positions on both sides riverbank, beat steel sheet pile and form cofferdam；
In preferable scheme, described steel sheet pile is Larsen steel sheet pile, and in this example, steel sheet pile selects 12 meters and 15 meters of Larsens
Steel sheet pile, cofferdam is being formed close to riverbank sideline b position, steel sheet pile is by the first steel sheet pile 4 of transverse direction and the second steel of longitudinal direction
Sheet pile 4a is formed.Second steel sheet pile 4a sets twice Larsen steel sheet pile, prevents cofferdam from intaking.
In preferable scheme, it be ranked first according to riverbank pipe trench c1 cutting depths two and bracing members be set between steel sheet pile 4.River
According to 1 when bank pipe trench c1 is excavated:2 ratios are handled along the axis direction slope of immersed tube pipeline 1.
In preferable scheme such as Fig. 3, the spacing between the first steel sheet pile 4 meets the requirement of backhoe operation in cofferdam.
2nd, riverbank pipe trench c1 is excavated in cofferdam with backhoe；
3rd, river course pipe trench c is excavated with the dredger with long-armed backhoe；
In preferable scheme, in step 3, dredger is applied along river course pipe trench c central axis from two banks toward the korneforos heart
Work, the construction of river central segment select to construct after night ship less period or application are iceound as far as possible, it is ensured that construction safety.
It is inverted trapezoidal that river course pipe trench c, which excavates cross section, and slope is than 1：2~1：4, to prevent Ha Noi mud to having dug river course pipe trench c
Inside slip into, using secondary cleaning groove；
Channel excavation bottom absolute altitude is more than design bottom 0.3 ~ 0.5m of absolute altitude, and bottom absolute altitude is detected with lining rope.
4th, after the completion of riverbank pipe trench c1 and river course pipe trench c is excavated, the setting cushion of rubble backfill 2 is carried out；
By the physical dimension on basis, surveying and locating goes out bedding plane absolute altitude, and every 4 ~ 5 meters set high process control stake, equipment material casting
Afterwards, paved bed course compound by diver, inspection plain cushion aspect is until reach designed elevation.Cushion construction finishes, and carries out pipe immediately
Road immersed tube operation.River bank cofferdam sealing steel sheet pile is extracted before immersed tube makes pipe trench groove water inlet on the bank.
5th, cushion construction finishes, and carries out the installation exercise of immersed tube pipeline 1, by immersed tube pipeline 1 at the scene assembly be welded into it is whole
Body, the both ends mouth of pipe of immersed tube pipeline 1 are blocked using blind plate, and water inlet pipe and blast pipe, water inlet pipe and blast pipe are set on blind plate
It is provided with valve；
The steel pipe of immersed tube pipeline 1 completes preservative treatment in factory and holds butting grooves successfully, and bend pipe is prefabricated in the factory.
In preferable scheme, in step 5, immersed tube pipeline 1 is located at upper flat section 1a, the tilting section 1b of river two sides and is located at
Assembled welding is integral at the scene by the flat section 1c of river bed, during immersed tube 1 on-site consolidation of pipeline with backhoe below every steel pipe pad two
Individual 60-80cm mounds carry out steel pipe contraposition regulation, butt welding of steel tube seam argon arc as steel pipe support point, tripod with chain block
Weld backing welding, manual electric arc welding welding.Immersed tube pipeline 1 is displaced to river bank with digging machine and crane.The processing operation of immersed tube pipeline 1
It can be carried out simultaneously before step 1 or with step 1, further to improve efficiency of construction.
Before immersed tube pipeline 1 is installed, steel sheet pile is extracted, riverbank pipe trench c1 is intake.
6th, apply before immersed tube operation iceound.Immersed tube pipeline 1 is hung with two cranes, is coordinated with digging machine and immersed tube pipeline 1 is moved
Move to the pipe trench c1 of riverbank, two cranes are hung at immersed tube pipe ends 1/3, and a digging machine coordinates is moved to pipe immersed tube pipeline
In groove, the valve on the water inlet pipe and blast pipe at the both ends of immersed tube pipeline 1 is closed mode, and one end of immersed tube pipeline 1 is put to water
Face utilizes the buoyancy of water and immersed tube pipeline 1 is extradited to river opposite bank with dredger.Correction is sling with two sides crane again, is put to digging
River course pipe trench c and riverbank pipe trench c1 position, start sinking of pouring water；
In preferable scheme, after the position adjustment of immersed tube pipeline 1 is correct, the both ends water inlet pipe of immersed tube pipeline 1 and blast pipe are opened
On valve, to the both ends water inlet pipe water pump water filling of immersed tube pipeline 1, when the pipeline commissioning water surface dipped to water inlet pipe, make pipeline
Naturally intake；Other end smooth in exhaust when pipeline is intake at one end, the generation of anti-vapour lock and water hammer.
7th, pressure pipe and backfill after the sinking of immersed tube pipeline 1 positioning；
In preferable scheme, in step 7, immersed tube finishes, and after qualified by inspection, carry out rubble and backfills 2 throwings, rubble returns
Fill out more than 2 upper surfaces and beared down on one using 1 block every meter equally distributed block of stone 3.The covering pipe face of rubble backfill 2 is carried out to foundation trench.
Cross a river immersed tube integral installation is realized by above step.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as the limitation for the present invention, this hair
Technical characteristic described in bright, on the premise of not conflicting, use can be combined with each other, protection scope of the present invention should be with right
It is required that the equivalents of technical characteristic are protection model in the technical scheme recorded, including the technical scheme of claim record
Enclose.Equivalent substitution i.e. within this range is improved, also within protection scope of the present invention.
Claims (6)
- A kind of 1. construction method of cross a river immersed tube integral installation, it is characterized in that comprising the following steps：First, in the riverbank pipe trench on both sides riverbank（c1）Position, beat steel sheet pile and form cofferdam, described steel sheet pile is Larsen steel plate Stake, close to riverbank sideline（b）Position formed cofferdam, steel sheet pile by transverse direction the first steel sheet pile（4）With the second steel of longitudinal direction Sheet pile（4a）Composition, according to riverbank pipe trench（c1）Cutting depth ranked first steel sheet pile two（4）Between bracing members are set；2nd, riverbank pipe trench is excavated in cofferdam with backhoe（c1）；3rd, river course pipe trench is excavated with the dredger with long-armed backhoe（c）；Dredger is along river course pipe trench（c）Central axis is constructed from two banks toward the korneforos heart；4th, riverbank pipe trench（c1）With river course pipe trench（c）After the completion of excavation, rubble backfill is carried out（2）Setting cushion；5th, cushion construction finishes, and carries out immersed tube pipeline（1）Installation exercise, by immersed tube pipeline（1）Upper flat section positioned at river two sides （1a）, tilting section（1b）With the flat section positioned at river bed（1c）Assembled welding is integral at the scene, and butt welding of steel tube seam argon arc welding is beaten Back welding, manual electric arc welding welding；Immersed tube pipeline（1）The both ends mouth of pipe is blocked using blind plate, and water inlet pipe and blast pipe, water inlet pipe and exhaust are set on blind plate Pipe is provided with valve；Immersed tube pipeline（1）Before installation, steel sheet pile is extracted, makes riverbank pipe trench（c1）Water inlet；6th, immersed tube pipeline is hung with two cranes（1）, coordinated with digging machine immersed tube pipeline（1）It is moved to riverbank pipe trench（c1）It is interior, Immersed tube pipeline（1）Valve on the water inlet pipe and blast pipe at both ends is closed mode, immersed tube pipeline（1）One end put to the water surface, Using dredger immersed tube pipeline（1）Extradite to river opposite bank；Correction is sling with two sides crane again, is put to the river course pipe trench dug （c）With riverbank pipe trench（c1）Position, start sinking of pouring water；Immersed tube pipeline（1）After position adjustment is correct, immersed tube pipeline is opened（1）Valve on both ends water inlet pipe and blast pipe, Xiang Chen Pipeline（1）The water pump water filling of both ends water inlet pipe, when the pipeline commissioning water surface dipped to water inlet pipe, pipeline is set to intake naturally；Pipe Other end smooth in exhaust when road intakes at one end, the generation of anti-vapour lock and water hammer；7th, immersed tube pipeline（1）Pressure pipe and backfill after sinking positioning；Cross a river immersed tube integral installation is realized by above step.
- 2. a kind of construction method of cross a river immersed tube integral installation according to claim 1, it is characterized in that：First steel sheet pile （4）Between spacing meet the requirement of backhoe operation in cofferdam.
- 3. a kind of construction method of cross a river immersed tube integral installation according to claim 1, it is characterized in that：Riverbank pipe trench（c1） According to slope than 1 during excavation:2 ratios are handled along conduit axis direction slope.
- 4. a kind of construction method of cross a river immersed tube integral installation according to claim 1, it is characterized in that：In step 3River course pipe trench（c）Excavation cross section is inverted trapezoidal, and slope is than 1：2~1：4, to prevent Ha Noi mud to having dug river course pipe trench（c） Inside slip into, using secondary cleaning groove；Channel excavation bottom absolute altitude is more than design bottom 0.3 ~ 0.5m of absolute altitude, and bottom absolute altitude is detected with lining rope.
- 5. a kind of construction method of cross a river immersed tube integral installation according to claim 1, it is characterized in that：In step 4, if After standby material casting, paved bed course compound by diver.
- 6. a kind of construction method of cross a river immersed tube integral installation according to claim 1, it is characterized in that：In step 7, sink Pipe finishes, and after qualified by inspection, carries out rubble backfill（2）Throwing, rubble backfill（2）More than upper surface using 1 piece every meter uniformly The block stone of distribution（3）Bear down on one.
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| CN201610413761.9A CN106015737B (en) | 2016-06-14 | 2016-06-14 | The construction method of cross a river immersed tube integral installation |
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| CN201610413761.9A CN106015737B (en) | 2016-06-14 | 2016-06-14 | The construction method of cross a river immersed tube integral installation |
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| CN106015737B true CN106015737B (en) | 2018-03-23 |
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| CN107763307A (en) * | 2017-09-27 | 2018-03-06 | 广西建工集团第五建筑工程有限责任公司 | A kind of water filling nature immersed tube crosses the installation method of river pipeline |
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| CN110397793B (en) * | 2019-08-05 | 2021-06-29 | 海洋石油工程股份有限公司 | Method for installing pipeline in cofferdam area |
| CN112854138B (en) * | 2021-01-09 | 2022-07-08 | 中铁广州工程局集团有限公司 | Existing river course diversion construction method |
| CN113235657B (en) * | 2021-04-30 | 2022-11-08 | 中国水利水电第十二工程局有限公司 | Heavy-caliber immersed tube assembly and immersed tube method |
| CN113531210B (en) * | 2021-07-06 | 2022-06-21 | 广西华硕建设工程有限公司 | Method for underwater immersed tube construction |
| CN114923032A (en) * | 2022-04-08 | 2022-08-19 | 淮安市水利勘测设计研究院有限公司 | Construction method for integral installation of large-diameter long-distance river-crossing pipeline |
| CN115823351B (en) * | 2022-12-29 | 2023-06-20 | 中交第四航务工程局有限公司 | Installation method and installation parameter design method for submarine pipeline at shoal section |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4687378A (en) * | 1980-04-04 | 1987-08-18 | Compagnie Francaise Des Petroles | Temporarily terminating laying of underwater pipe line |
| CN101315139A (en) * | 2008-06-20 | 2008-12-03 | 广州市自来水工程公司 | Immersed pipe construction technique of river crossing pipe |
| 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 |
| CN103912721A (en) * | 2014-04-23 | 2014-07-09 | 中国化学工程第三建设有限公司 | Underwater grooving and pipe sinking river traversing construction method |
| CN105952967A (en) * | 2016-06-01 | 2016-09-21 | 天津市城安热电有限公司 | Pipe immersing operation method for immersing pipe by using floating balls |
-
2016
- 2016-06-14 CN CN201610413761.9A patent/CN106015737B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4687378A (en) * | 1980-04-04 | 1987-08-18 | Compagnie Francaise Des Petroles | Temporarily terminating laying of underwater pipe line |
| CN101315139A (en) * | 2008-06-20 | 2008-12-03 | 广州市自来水工程公司 | Immersed pipe construction technique of river crossing pipe |
| 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 |
| CN103912721A (en) * | 2014-04-23 | 2014-07-09 | 中国化学工程第三建设有限公司 | Underwater grooving and pipe sinking river traversing construction method |
| CN105952967A (en) * | 2016-06-01 | 2016-09-21 | 天津市城安热电有限公司 | Pipe immersing operation method for immersing pipe by using floating balls |
Non-Patent Citations (1)
| Title |
|---|
| 《竹银水源工程三门涌水下沉管施工技术》;左乐;《四川水利》;20120615;正文第48-49页 * |
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