CN105696625A - Desilting system and method for immersed tube tunnel gravel foundation bed - Google Patents

Desilting system and method for immersed tube tunnel gravel foundation bed Download PDF

Info

Publication number
CN105696625A
CN105696625A CN201610059035.1A CN201610059035A CN105696625A CN 105696625 A CN105696625 A CN 105696625A CN 201610059035 A CN201610059035 A CN 201610059035A CN 105696625 A CN105696625 A CN 105696625A
Authority
CN
China
Prior art keywords
desilting
bedding
immersed tube
slush pump
block stone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610059035.1A
Other languages
Chinese (zh)
Other versions
CN105696625B (en
Inventor
刘德进
冯海暴
苏长玺
曲俐俐
张学俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CCCC First Harbor Engineering Co Ltd
No 2 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
Original Assignee
No 2 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by No 2 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd filed Critical No 2 Engineering Co Ltd of CCCC First Harbor Engineering Co Ltd
Priority to CN201610059035.1A priority Critical patent/CN105696625B/en
Publication of CN105696625A publication Critical patent/CN105696625A/en
Application granted granted Critical
Publication of CN105696625B publication Critical patent/CN105696625B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/063Tunnels submerged into, or built in, open water
    • E02D29/07Tunnels or shuttering therefor preconstructed as a whole or continuously made, and moved into place on the water-bed, e.g. into a preformed trench
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/02Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
    • E02B3/023Removing sediments

Abstract

The invention provides a desilting system for an immersed tube tunnel gravel foundation bed. The desilting system comprises a foundation trench. The foundation bed is laid in the foundation trench and comprises a block stone layer and a gravel layer which are arranged from bottom to top. The gravel layer is internally provided with desilting pipes. Holes are formed in the pipe walls of the desilting pipes. Silt pumps are connected to the desilting pipes. According to the desilting system for the immersed tube tunnel gravel foundation bed, when the foundation bed is laid, the desilting pipes are buried in the gravel layer; when silt exists on the foundation bed, the silt pumps are opened, and the silt enters the desilting pipes through gaps of the gravel layer and is removed; the system is simple in structure, easy to operate, not prone to being affected by water flow, climate and other environmental factors and good in desilting effect; the laid foundation bed structure is not affected, the installing precision of an immersed tube can be ensured in a later period, and the service life of a tunnel is prolonged.

Description

Immersed tube tunnel rubble bedding desilting system and method
Technical field
The present invention relates to immersed tube tunnel technical field of construction, specifically, be a kind of immersed tube tunnel rubble bedding desilting system and method。
Background technology
Subaqueous tunnel is through frequently with immersed tunnelling method, whole tunnel immersed tube is made up of more piece tube coupling, tube coupling is put into one by one on the rubble bedding at the bottom, rubble bedding is installed and is needed to consume a few days from starting to be routed to tube coupling, owing in some waters, silt content is higher, add former mud face, top, foundation trench slope and have certain thickness mud, changed by silt content in flood season, near the impact of the disturbance on water of the boats and ships that travel on navigation channel and atmospheric and climatic factors, increasing of back-silting can be caused, even cause poly-silt, in foundation trench, the own stress of Immersed tunnel and pipeline section will be brought a lot of problem by the mud on rubble bedding。The adverse effect that immersed tube tunnel is caused by mud specifically includes that change rubble bedding mechanical characteristic, affects the power transmission effect of foundation bed structure;Depositing in bedding face, causes the sinking tube coupling cannot implantation;Disturbance to deposit, changes sea water unit weight, affects the anti-floating safety of immersed tube joint;If accompanying mud in blotter basis, after tunnel being runed, immersed tube settlement after construction can be caused excessive because of the consolidation deformation of mud and differential settlement exceeds standard, pipeline section producing bigger moment of flexure, time serious, causes that pipeline section ftractures。
In order to avoid mud affects immersed tube tunnel, currently mainly adopt two ways: one is cladding process, utilize geotextiles that bedding is covered, it is prevented that mud is fallen on bedding;Another kind is desilting method, utilizes rake to inhale ship and absorbs by the mud fallen on bedding。All there is more problem in both modes, the former operates and comparatively bothers, it is easy to is subject to the impact of current, anti-silting poor effect;The latter needs to make rake inhale boatman and makees portion near bedding, under water currents, rake is inhaled ship and is easily rocked, its work portion is made to touch bedding, destroy the bedding laid, affect the installation accuracy of immersed tube, if rake being inhaled operation again after ship is fixed, need again repeatedly to carry out rake and inhale the movement of ship and fixing, add operation easier。
Summary of the invention
The present invention is directed to above-mentioned existing sludge treatment mode Problems existing, it is proposed that a kind of new immersed tube tunnel rubble bedding desilting system and method。
The immersed tube tunnel rubble bedding desilting system of the present invention, including foundation trench, is equipped with bedding in described foundation trench, described bedding includes the block stone layer and the metalling that arrange from bottom to top, being provided with desilting pipe in described metalling, described desilting tube wall perforate, described desilting pipe is connected to slush pump。
Preferably, described desilting pipe is horizontally set on the bottom of metalling, and the perforate of described desilting pipe is all located at upside。
A kind of immersed tube tunnel rubble bedding desilting system method, step is as follows:
1) excavation foundation trench, then carries out underlayment process, is thrown into block stone, and block stone is rammed Heisei block stone layer in foundation trench;
2) desilting pipe handling sinking is installed on block stone layer;
3) above the block stone layer having laid desilting pipe, lay metalling, complete bedding and lay;
4) slush pump is connected with desilting pipe, opens slush pump, utilize waterway circulating to be removed by rubble gap by mud。
Preferably, carry out foundation trench excavation by dredger, be thrown into and ram flat by what jackstone rammed that flat ship carries out block stone, carry out desilting pipe installation by crane gear, lay metalling by leveling ship。
Preferably, before desilting pipe is installed, the reserved fast interface connecting slush pump on desilting pipe。
Preferably, bedding is laid segmentation and is carried out, and first lays one section of block stone layer, then installs desilting pipe on this section of block stone layer, finally lays metalling again on this section of block stone layer, completes the laying of one section of bedding, then carry out the laying of next section of bedding。
Preferably, often lay one section of bedding, monitoring of this section of bedding can being back-silted, when the silt depth detected exceedes regulation requirement, it is connected with the desilting pipe of this section of bedding by slush pump, carries out silt displacement。
Preferably, first adopt multi-beam and the box detection silt depth that back-silts, when the silt depth detected exceedes regulation requirement, then slush pump is connected with desilting pipe, carries out silt displacement。
Preferably, slush pump is arranged on boats and ships, is positioned dredger to need above the bedding of desilting, is connected with slush pump by desilting pipe with water under diver。
Preferably, in the process that the mud that slush pump is extracted out is discharged, the water quality of mud is discharged in monitoring in real time, and when the water quality that mud is discharged in monitoring is clear water, slush pump is out of service。
The invention has the beneficial effects as follows: immersed tube tunnel rubble bedding desilting system is when bedding is laid, in metalling, just buried desilting pipe underground, when bedding has mud, open slush pump, mud then can enter in desilting pipe by the gap of metalling, by silt displacement, system structure is simple, processing ease, being not easily susceptible to the impact of the environmental factors such as current, weather, dredging effect is good, without influence on the foundation bed structure laid, ensure that the precision that later stage immersed tube is installed, improve the service life in tunnel。Desilting pipe is positioned at bottom metalling, seat is on block stone layer, alleviate the impact on former foundation bed structure of the desilting pipe, ensure the stability of foundation bed structure, also being their ability to the fully erased mud fallen in metalling gap, desilting pipe perforate is upward, it is possible to enable suction to be more directly delivered to bedding surface, mud is enable to be absorbed completely, it is ensured that the effect that mud cleans。
The exploitation of foundation trench and block stone be thrown into that rammer is flat all adopts traditional work mode, system building difficulty is low, it is possible to ensure higher construction quality。Bedding broken-up laying, desilting segmentation carries out, circulation operation, bedding row does not become disturbance, and can be realized by simple and easy boats and ships, does not affect basis leveling and other operations at next accommodation。Fast interface reserved by desilting pipe, it is simple to be quickly connected with slush pump, is beneficial to segmentation and carries out desilting。Carry out dredging operation again after detection silt depth, farthest reduce the number of times of dredging operation, reduce the cost of operation。Slush pump is contained on dredger, it is possible to using and install connection flexibly, operating flexibility is strong。Slush pump is extracted out and is monitored in real time by desilting process, just quits work, it is to avoid unnecessary energy resource consumption and manpower consumption after up to standard。
Accompanying drawing explanation
Accompanying drawing 1 is the horizontal schematic diagram of this immersed tube tunnel rubble bedding desilting system。
Accompanying drawing 2 is the top cross-sectional view of this immersed tube tunnel rubble bedding desilting system。
Accompanying drawing 3 is longitudinal schematic diagram of this immersed tube tunnel rubble bedding desilting system。
Detailed description of the invention
In order to be able to further appreciate that the structure of the present invention, feature and other purpose, describing in detail as follows in conjunction with appended preferred embodiment, illustrated preferred embodiment is merely to illustrate technical scheme the non-limiting present invention。
The specific embodiment of the present invention is as follows:
As shown in Figures 1 to 3, this immersed tube tunnel rubble bedding desilting system includes foundation trench 1, is equipped with bedding in foundation trench 1, and bedding includes the block stone layer 2 and the metalling 3 that arrange from bottom to top。Being provided with desilting pipe 4 in metalling 3, desilting pipe 4 tube wall perforate, desilting pipe 4 is connected to slush pump 5。
During construction, first excavation foundation trench 1, then carries out underlayment process, then is thrown into block stone in foundation trench, and block stone is rammed Heisei block stone layer 2。Then desilting pipe 4 handling sinking is installed on block stone layer 3。Then having laid laying metalling 3 above the block stone layer 2 of desilting pipe 4, being buried underground in metalling 3 by desilting pipe 4, bedding has been laid。Finally slush pump 5 is connected with desilting pipe 4, open slush pump 5, waterway circulating is utilized to be removed by rubble gap by mud, the suction that slush pump 5 produces makes the mud on bedding pass sequentially through the gap of metalling 3, the perforate of desilting pipe 4 enters in desilting pipe 4, is finally taken away from desilting pipe 4 by slush pump 5。
Before desilting pipe 4 is installed, the reserved fast interface 6 connecting slush pump on desilting pipe 4。Desilting pipe 4 horizontal positioned is to block stone layer 2, and metalling 3 makes it be arranged on the bottom of metalling 3 after laying, it is possible to metalling 3 is completely covered, and makes the mud fallen in metalling 3 gap also be able to remove。The perforate of desilting pipe 4 all upward, is positioned at the upside of desilting pipe 4, makes perforate directly be directed at mud, improves cleaning efficiency。As in figure 2 it is shown, desilting pipe 4 can arrange multiple in interval in the plane on block stone layer 2 surface, cover whole metalling comprehensively。
The excavation of foundation trench 1 adopts dredger, and being thrown into and ramming of block stone flat then rammed flat ship by jackstone and carried out, and the handling sinking of desilting pipe 4 is installed and undertaken by crane gear, and laying metalling is undertaken by platform-type or floatation type leveling ship。
Carry out as it is shown on figure 3, bedding lays segmentation, first lay one section of block stone layer 2, then desilting pipe 4 is installed on this section of block stone layer 2, this section of block stone layer 2 is finally laid metalling 3 again, completes the laying of one section of bedding, then carry out the laying of next section of bedding。
Often lay one section of bedding, this section of bedding can adopt multi-beam and the box that back-silts back-silt monitoring, when the silt depth detected exceedes regulation requirement, it is connected with the desilting pipe of this section of bedding by slush pump, carry out silt displacement, after desilting completes, on this section of bedding, just carry out the installation of immersed tube 8, the workload that dredging operation is overall can be alleviated。
Slush pump 5 is arranged on boats and ships 7, when carrying out dredging operation, first utilizes the modes such as rope to be positioned to need above the bedding of desilting in boats and ships 7, is then connected with slush pump 5 by desilting pipe 4 with water under diver, is then turned on slush pump 5 and carries out desilting。The mud that slush pump 5 is extracted out is sent in the cabin of boats and ships 7 or is transported to land either directly through pipeline, in the process that the mud that slush pump 5 is extracted out is discharged, the water quality of mud is discharged in monitoring in real time, when the water quality that mud is discharged in monitoring is clear water, slush pump 5 is out of service, remove and connect, boats and ships 7 are removed Project Areas。

Claims (10)

1. an immersed tube tunnel rubble bedding desilting system, including foundation trench, is equipped with bedding in described foundation trench, described bedding includes the block stone layer and the metalling that arrange from bottom to top, it is characterised in that be provided with desilting pipe in described metalling, described desilting tube wall perforate, described desilting pipe is connected to slush pump。
2. immersed tube tunnel rubble bedding desilting system according to claim 1, it is characterised in that described desilting pipe is horizontally set on the bottom of metalling, the perforate of described desilting pipe is all located at upside。
3. an immersed tube tunnel rubble bedding desilting system method, it is characterised in that step is as follows:
1) excavation foundation trench, then carries out underlayment process, is thrown into block stone, and block stone is rammed Heisei block stone layer in foundation trench;
2) desilting pipe handling sinking is installed on block stone layer;
3) above the block stone layer having laid desilting pipe, lay metalling, complete bedding and lay;
4) slush pump is connected with desilting pipe, opens slush pump, utilize waterway circulating to be removed by rubble gap by mud。
4. immersed tube tunnel rubble bedding desilting system method according to claim 3, it is characterized in that, carry out foundation trench excavation by dredger, by jackstone ram flat ship carry out block stone be thrown into and ram flat, carry out desilting pipe installation by crane gear, lay metalling by leveling ship。
5. immersed tube tunnel rubble bedding desilting system method according to claim 3, it is characterised in that before installing desilting pipe, the reserved fast interface connecting slush pump on desilting pipe。
6. immersed tube tunnel rubble bedding desilting system method according to claim 3, it is characterized in that, bedding is laid segmentation and is carried out, first lay one section of block stone layer, then desilting pipe is installed on this section of block stone layer, last this section of block stone layer again lays metalling, completes the laying of one section of bedding, then carry out the laying of next section of bedding。
7. immersed tube tunnel rubble bedding desilting system method according to claim 6, it is characterized in that, often lay one section of bedding, this section of bedding can be back-silted monitoring, when the silt depth detected exceedes regulation requirement, it is connected with the desilting pipe of this section of bedding by slush pump, carries out silt displacement。
8. immersed tube tunnel rubble bedding desilting system method according to claim 3, it is characterized in that, first adopt multi-beam and the box detection silt depth that back-silts, when the silt depth detected exceedes regulation requirement, again slush pump is connected with desilting pipe, carries out silt displacement。
9. immersed tube tunnel rubble bedding desilting system method according to claim 3, it is characterised in that slush pump is arranged on boats and ships, is positioned dredger to need above the bedding of desilting, is connected with slush pump by desilting pipe with water under diver。
10. the immersed tube tunnel rubble bedding desilting system method according to claim 3 or 7, it is characterised in that in the process that the mud that slush pump is extracted out is discharged, the water quality of mud is discharged in monitoring in real time, when the water quality that mud is discharged in monitoring is clear water, slush pump is out of service。
CN201610059035.1A 2016-01-28 2016-01-28 The dredging method of immersed tube tunnel rubble bedding desilting system Active CN105696625B (en)

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

Applications Claiming Priority (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

Publications (2)

Publication Number Publication Date
CN105696625A true CN105696625A (en) 2016-06-22
CN105696625B CN105696625B (en) 2018-05-22

Family

ID=56229648

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610059035.1A Active CN105696625B (en) 2016-01-28 2016-01-28 The dredging method of immersed tube tunnel rubble bedding desilting system

Country Status (1)

Country Link
CN (1) CN105696625B (en)

Citations (5)

* Cited by examiner, † Cited by third party
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
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
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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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
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
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
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

Also Published As

Publication number Publication date
CN105696625B (en) 2018-05-22

Similar Documents

Publication Publication Date Title
CN1256531C (en) Construction method for river crossing pipeline
CN104846787B (en) A kind of employing cutter suction dredger carries out neritic province domain blast sea reclamation construction method
CN105672195B (en) Suction Dredging Construction engineering method is twisted under a kind of urban ecology urban river water
CN102605697A (en) Sand dredger filling construction method of soft soil foundation embankment
CN103038426A (en) Method and apparatus for auxilary seafloor mining
CN202380564U (en) Beach waterspout structure
CN202969343U (en) Diffusion device in discharging thick seawater into sea
CN105970900A (en) Offshore wind turbine gravity type foundation installation seabed treatment process
US11041280B2 (en) Device for a sediment transfer in waters, and also a method for a transfer of sediment in waters
CN110055972A (en) Dry dock foundation ditch construction method and dry dock foundation pit structure
CN104878779B (en) The anti-silting cover plate of immersed tube tunnel rubble bedding cover type, anti-silting system and construction method
CN106245652B (en) A kind of construction method of deep foundation pit earthwork digging near a river
CN206143774U (en) Can assemble landing stage waterborne operation platform
CN104975612A (en) Novel water open caisson construction technology
CN106400807B (en) Extra large work barge grouting method and its equipment
CN106400745B (en) A kind of sea work barge operational method and equipment
CN205348226U (en) Immersed tube tunnel rubble foundation bed desilting system
CN105696625A (en) Desilting system and method for immersed tube tunnel gravel foundation bed
CN208815550U (en) A kind of rich water powder land floor precipitation and recharge construction system
Paulin et al. Trenching considerations for Arctic pipelines
JP2016204875A (en) Seabed resource mining system
CN104058071B (en) A kind of semi-submersible dredget
KR101523367B1 (en) Method of dewatering for Landfill by directional drilling
CN208917783U (en) Scoop pump sand ship dredge fill system
CN109137943B (en) Earth filling construction process for sea reclamation

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C41 Transfer of patent application or patent right or utility model
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.

C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

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

GR01 Patent grant
GR01 Patent grant