CN105696625B - The dredging method of immersed tube tunnel rubble bedding desilting system - Google Patents
The dredging method of immersed tube tunnel rubble bedding desilting system Download PDFInfo
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- CN105696625B CN105696625B CN201610059035.1A CN201610059035A CN105696625B CN 105696625 B CN105696625 B CN 105696625B CN 201610059035 A CN201610059035 A CN 201610059035A CN 105696625 B CN105696625 B CN 105696625B
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- bedding
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- immersed tube
- slush pump
- dredging pipe
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- 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
- E02D29/07—Tunnels or shuttering therefor preconstructed as a whole or continuously made, and moved into place on the water-bed, e.g. into a preformed trench
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
Abstract
A kind of immersed tube tunnel rubble bedding desilting system, including foundation trench, bedding is equipped in the foundation trench, the bedding includes the block stone layer and metalling that set from bottom to top, dredging pipe, the dredging tube wall perforate are provided in the metalling, the dredging pipe is connected with slush pump.Immersed tube tunnel rubble bedding desilting system has just buried dredging pipe when bedding is laid in metalling, when bedding has mud, open slush pump, mud can be then entered by the gap of metalling in dredging pipe, and by silt displacement, system structure is simple, operation is easy, the influence of the environmental factors such as current, weather is not easily susceptible to, dredging effect is good, does not interfere with the foundation bed structure for being laid with completion, it can ensure the precision of later stage immersed tube installation, improve the service life in tunnel.
Description
Technical field
The present invention relates to immersed tube tunnel technical field of construction, are a kind of immersed tube tunnel rubble bedding dredging systems specifically
The dredging method of system.
Background technology
Subaqueous tunnel is passed through frequently with immersed tunnelling method, and entire tunnel immersed tube is made of more piece tube coupling, and tube coupling is put into the bottom one by one
Rubble bedding on, rubble bedding needs to consume a few days from starting to be routed to tube coupling installation, due in some waters silt content compared with
Height, along with there is certain thickness mud in foundation trench top of the slope original mud face, by the ship travelled on the variation of flood season silt content, neighbouring navigation channel
The influence of disturbance and atmospheric and climatic factors to water can cause to back-silt increasing or even causing poly- silt, in foundation trench on rubble bedding
Mud will carry out many problems to Immersed tunnel and pipeline section forced belt itself.Mud adversely affects master caused by immersed tube tunnel
Including：Change rubble bedding mechanical characteristic, influence the power transmission effect of foundation bed structure；Bedding face deposit, cause sinking tube coupling without
Method implantation；Disturbance to deposit changes seawater unit weight, influences the anti-floating safety of immersed tube section；If on blotter basis
In accompany mud, after tunnel operation, immersed tube settlement after construction can be caused excessive and differential settlement because of the consolidation deformation of mud
It is exceeded, larger moment of flexure is generated in pipeline section, when serious pipeline section is caused to crack.
In order to avoid mud influences immersed tube tunnel, two ways is mainly used at present：One kind is cladding process, utilizes geotextiles
Bedding is covered, prevents mud from falling on bedding；Another kind is dredging method, the mud that will be fallen on using rake suction ship on bedding
Absorption is fallen.Both modes all there are it is more the problem of, the former operates more troublesome, is easily influenced, prevents be subject to current
What is become silted up is ineffective；The latter needs that rake is made to inhale ship work department close to bedding, and under water currents, rake is inhaled ship and easily rocked, and makes it
Work department touches bedding, destroys the bedding laid, influences the installation accuracy of immersed tube, if rake is inhaled after ship is fixed again
Operation, and need repeatedly to carry out movement and fixation that rake inhales ship, add operation difficulty.
The content of the invention
The present invention for above-mentioned existing sludge treatment mode there are the problem of, it is proposed that a kind of new immersed tube tunnel rubble base
The dredging method of bed desilting system.
The immersed tube tunnel rubble bedding desilting system of the present invention, including foundation trench, is equipped with bedding, the base in the foundation trench
Bed includes the block stone layer and metalling that set from bottom to top, is provided with dredging pipe in the metalling, the dredging tube wall is opened
Hole, the dredging pipe are connected with slush pump.
Preferably, the dredging pipe is horizontally set on the bottom of metalling, and the perforate of the dredging pipe is all located at upside.
A kind of dredging method of immersed tube tunnel rubble bedding desilting system, step are as follows：
1) foundation trench is excavated, then carries out underlayment processing, block stone is thrown into foundation trench, and block stone is rammed into Heisei block stone layer；
2) dredging pipe handling sinking is installed on block stone layer；
3) metalling is laid with above the block stone layer for having laid dredging pipe, bedding is completed and is laid with；
4) slush pump with dredging pipe is connected, opens slush pump, removed mud by rubble gap using waterway circulating.
Preferably, foundation trench excavation is carried out by dredger, by jackstone ram flat ship carry out block stone be thrown into and ram it is flat, it is logical
It crosses lifting equipment and carries out dredging pipe installation, metalling is laid with by leveling ship.
Preferably, before dredging pipe being installed, the fast interface of connection slush pump is reserved on dredging pipe.
Preferably, bedding is laid with segmentation and carries out, and is first laid with one section of block stone layer, then installs dredging on this section of block stone layer
Pipe is finally laid with metalling again on this section of block stone layer, complete the laying of one section of bedding, then carry out the laying of next section of bedding.
Preferably, often it is laid with and completes one section of bedding, you can monitoring of back-silting is carried out to this section of bedding, when the mud detected
When thickness is more than that regulation requires, i.e., slush pump with the dredging pipe of this section of bedding is connected, carries out silt displacement.
Preferably, first using multi-beam and the box detection silt depth that back-silts, when the silt depth detected is more than regulation
It is required that when, then slush pump is connected with dredging pipe, carry out silt displacement.
Preferably, slush pump is mounted on ship, dredger is positioned above the bedding for needing dredging, is used diver
Dredging pipe is connected by lower water with slush pump.
Preferably, the water quality of discharge mud is monitored during the mud discharge of slush pump extraction in real time, when monitoring is arranged
When the water quality for going out mud is clear water, slush pump is out of service.
The beneficial effects of the invention are as follows：Immersed tube tunnel rubble bedding desilting system is when bedding is laid with, just in metalling
Dredging pipe has been buried, when bedding has mud, has opened slush pump, mud then can enter dredging pipe by the gap of metalling
In, by silt displacement, system structure is simple, and operation is easy, is not easily susceptible to the influence of the environmental factors such as current, weather, dredging effect
Fruit is good, does not interfere with the foundation bed structure for being laid with completion, can ensure the precision of later stage immersed tube installation, improves the use in tunnel
Service life.Dredging pipe is located at metalling bottom, and seat alleviates influence of the dredging pipe to former base bed structure on block stone layer, ensures base
The stability of bed structure, is also their ability to the fully erased mud fallen into rubble layer gap, the perforate of dredging pipe upward, energy
Suction is enough enable more directly to be transferred to bedding surface, mud is enable to be absorbed completely, ensures the effect of mud cleaning.
The exploitation of foundation trench and the rammer that is thrown into of block stone are put down all using traditional work mode, and system building difficulty is low, Neng Goubao
The higher construction quality of card.Bedding broken-up laying, dredging segmentation carry out, and circulate operation not to bedding row into disturbance, and can lead to
Simple ship is crossed to realize, not under the influence of an accommodation basis leveling and other processes.Dredging pipe reserves fast interface, convenient for quick
It is connected with slush pump, dredging is carried out beneficial to segmentation.Dredging operation is carried out again after detection silt depth, reduces dredging to the greatest extent
The number of operation reduces the cost of operation.Slush pump flexibly can use and install connection, operating flexibility on dredger
Property is strong.Dredging process to slush pump extraction monitored in real time, be just stopped after up to standard, avoid unnecessary energy consumption with
Manpower consumption.
Description of the drawings
Attached drawing 1 is the horizontal schematic diagram of this immersed tube tunnel rubble bedding desilting system.
Attached drawing 2 is the top cross-sectional view of this immersed tube tunnel rubble bedding desilting system.
Attached drawing 3 is longitudinal schematic diagram of this immersed tube tunnel rubble bedding desilting system.
Specific embodiment
It is detailed in conjunction with appended preferred embodiment in order to further appreciate that structure, feature and the other purposes of the present invention
It is described as follows, illustrated preferred embodiment is merely to illustrate technical scheme, and the non-limiting present invention.
The specific embodiment of the present invention is as follows：
As shown in Figures 1 to 3, which includes foundation trench 1, and bedding, base are equipped in foundation trench 1
Bed includes the block stone layer 2 set from bottom to top and metalling 3.It is provided with dredging pipe 4 in metalling 3, the 4 tube wall perforate of dredging pipe,
Dredging pipe 4 is connected with slush pump 5.
During construction, foundation trench 1 is first excavated, then carries out underlayment processing, then block stone is thrown into foundation trench, and block stone is rammed and is put down
Into block stone layer 2.Then 4 handling sinking of dredging pipe is installed on block stone layer 3.Then the block stone layer 2 of dredging pipe 4 is being laid
Top is laid with metalling 3, and dredging pipe 4 is buried in metalling 3, and bedding, which is laid with, to be completed.Finally by slush pump 5 and dredging pipe 4
Connection is opened slush pump 5, is removed mud by rubble gap using waterway circulating, and the suction that slush pump 5 generates makes on bedding
Mud pass sequentially through the perforate in the gap of metalling 3, dredging pipe 4 and enter in dredging pipe 4, finally by slush pump 5 from dredging
It is taken away in pipe 4.
Before dredging pipe 4 is installed, the fast interface 6 of connection slush pump is reserved on dredging pipe 4.Dredging pipe 4 is horizontal positioned to be arrived
On block stone layer 2, metalling 3 makes it be arranged on the bottom of metalling 3 after being laid with, and metalling 3 can be completely covered, make to fall into rubble
Mud in 3 gap of layer can also be removed.The perforate of dredging pipe 4 all upward, positioned at the upside of dredging pipe 4, makes perforate directly right
Quasi- mud improves cleaning efficiency.As shown in Fig. 2, dredging pipe 4 can be arranged at intervals in the plane on 2 surface of block stone layer it is multiple, comprehensively
Cover entire metalling.
The excavation of foundation trench 1 uses dredger, block stone be thrown into and ram it is flat flat ship progress is then rammed by jackstone, dredging pipe 4
The installation of handling sinking is carried out by lifting equipment, is laid with metalling and is carried out by platform-type or floatation type leveling ship.
It is carried out as shown in figure 3, bedding is laid with segmentation, is first laid with one section of block stone layer 2, is then installed on this section of block stone layer 2
Dredging pipe 4 is finally laid with metalling 3 again on this section of block stone layer 2, complete the laying of one section of bedding, then carry out next section of bedding
Laying.
It is often laid with and completes one section of bedding, you can monitoring of back-silting is carried out using multi-beam and the box that back-silts to this section of bedding, works as inspection
When the silt depth measured is more than regulation requirement, i.e., slush pump with the dredging pipe of this section of bedding is connected, carries out silt displacement, clearly
After the completion of silt, the installation of immersed tube 8 is just carried out on this section of bedding, the workload of dredging operation entirety can be mitigated.
Slush pump 5 is mounted on ship 7, and when carrying out dredging operation, ship 7 first is positioned at needs using modes such as ropes
Above the bedding of dredging, then dredging pipe 4 with slush pump 5 is connected with water under diver, slush pump 5 is then turned on and carries out clearly
It becomes silted up.The mud that slush pump 5 is extracted out is sent in the cabin of ship 7 or is directly pipelined to land, and slush pump 5 is taken out
The water quality of the mud of monitoring discharge in real time during the mud discharge gone out when the water quality of monitoring discharge mud is clear water, takes out mud
It pumps 5 out of service, removes connection, ship 7 is removed into Project Areas.
Claims (8)
1. a kind of dredging method of immersed tube tunnel rubble bedding desilting system, immersed tube tunnel rubble bedding desilting system includes base
Slot, is equipped with bedding in the foundation trench, and the bedding includes the block stone layer and metalling that set from bottom to top, in the metalling
Dredging pipe, the dredging tube wall perforate are provided with, the dredging pipe is connected with slush pump；The dredging pipe is horizontally set on broken
The bottom of rock layers, the perforate of the dredging pipe are all located at upside；
It is characterized in that, the step of method, is as follows：
1) foundation trench is excavated, then carries out underlayment processing, block stone is thrown into foundation trench, and block stone is rammed into Heisei block stone layer；
2) dredging pipe handling sinking is installed on block stone layer；
3) metalling is laid with above the block stone layer for having laid dredging pipe, bedding is completed and is laid with；
4) slush pump with dredging pipe is connected, opens slush pump, removed mud by rubble gap using waterway circulating.
2. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 1, which is characterized in that pass through digging
Mud ship carries out foundation trench excavation, is thrown into and rams flat by what jackstone rammed that flat ship carries out block stone, pass through lifting equipment progress dredging Guan An
Dress, metalling is laid with by leveling ship.
3. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 1, which is characterized in that installation is clear
Before silt pipe, the fast interface of connection slush pump is reserved on dredging pipe.
4. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 1, which is characterized in that bedding is spread
If segmentation carries out, one section of block stone layer is first laid with, then dredging pipe is installed on this section of block stone layer, finally this section of block stone layer upper berth again
If metalling, the laying of one section of bedding is completed, then carries out the laying of next section of bedding.
5. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 4, which is characterized in that be often laid with
Complete one section of bedding, you can monitoring of back-silting is carried out to this section of bedding, it, will when the silt depth detected is more than regulation requirement
Slush pump is connected with the dredging pipe of this section of bedding, carries out silt displacement.
6. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 1, which is characterized in that first use
Multi-beam and the box detection silt depth that back-silts, when the silt depth detected is more than regulation requirement, then by slush pump and dredging
Pipe connects, and carries out silt displacement.
7. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 1, which is characterized in that slush pump
On ship, dredger is positioned above the bedding for needing dredging, is connected dredging pipe and slush pump with water under diver
It connects.
8. the dredging method of immersed tube tunnel rubble bedding desilting system according to claim 1 or 5, which is characterized in that take out
The water quality of the mud of monitoring discharge in real time during the mud discharge of dredge pump extraction, when the water quality of monitoring discharge mud is clear water
When, slush pump is out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610059035.1A CN105696625B (en) | 2016-01-28 | 2016-01-28 | The dredging method of immersed tube tunnel rubble bedding desilting system |
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| CN201610059035.1A CN105696625B (en) | 2016-01-28 | 2016-01-28 | The dredging method of immersed tube tunnel rubble bedding desilting system |
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| CN105696625A CN105696625A (en) | 2016-06-22 |
| CN105696625B true CN105696625B (en) | 2018-05-22 |
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| CN116927167B (en) * | 2023-07-27 | 2024-01-30 | 广东省华建工程建设有限公司 | Construction method for replacing and filling graded broken stone on pipeline foundation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281924A (en) * | 1999-07-22 | 2001-01-31 | 陈启星 | Method for preventing and controlling reservoir sediment accumulation by using siphon principle |
| DE10156950A1 (en) * | 2001-11-20 | 2004-04-08 | Heinze, Peter, Dr.-Ing. | Construction method for underwater tunnels with steel tunnel sections fabricated on land, acting as lost shuttering and water-protection for internal concrete lining, and completely fitted-out before lowering into water |
| CN202577349U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Large immersed tube tunnel dry dock floor structure |
| CN202577341U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Pipe section foundation of large-scale immersed pipe tunnel |
| CN104947708A (en) * | 2015-04-24 | 2015-09-30 | 中国交通建设股份有限公司 | Combined foundation bed for immersed tube tunnels and construction method thereof |
-
2016
- 2016-01-28 CN CN201610059035.1A patent/CN105696625B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1281924A (en) * | 1999-07-22 | 2001-01-31 | 陈启星 | Method for preventing and controlling reservoir sediment accumulation by using siphon principle |
| DE10156950A1 (en) * | 2001-11-20 | 2004-04-08 | Heinze, Peter, Dr.-Ing. | Construction method for underwater tunnels with steel tunnel sections fabricated on land, acting as lost shuttering and water-protection for internal concrete lining, and completely fitted-out before lowering into water |
| CN202577349U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Large immersed tube tunnel dry dock floor structure |
| CN202577341U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Pipe section foundation of large-scale immersed pipe tunnel |
| CN104947708A (en) * | 2015-04-24 | 2015-09-30 | 中国交通建设股份有限公司 | Combined foundation bed for immersed tube tunnels and construction method thereof |
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| CN105696625A (en) | 2016-06-22 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20160622 Address after: 300461, Tianjin Port Free Trade Zone, Yuejin Road, shipping service center, building 8 Applicant after: CCCC First Harbor Engineering Co., Ltd. Applicant after: The Second Engineering Co. of CCCC First Harbor Engineering Co., Ltd. Address before: 266000 Shandong city of Qingdao province Fuzhou City Road No. 16 building in Hong Kong Applicant before: The Second Engineering Co. of CCCC First Harbor Engineering Co., Ltd. |
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Inventor after: Liu Dejin Inventor after: Feng Haibao Inventor after: Su Changxi Inventor after: Li Zengjun Inventor after: Qu Lili Inventor after: Zhang Xuejun Inventor before: Liu Dejin Inventor before: Feng Haibao Inventor before: Su Changxi Inventor before: Qu Lili Inventor before: Zhang Xuejun |
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