CN110453706A - Underwater canopy cofferdam for channel side slopes reparation - Google Patents
Underwater canopy cofferdam for channel side slopes reparation Download PDFInfo
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- CN110453706A CN110453706A CN201910882612.0A CN201910882612A CN110453706A CN 110453706 A CN110453706 A CN 110453706A CN 201910882612 A CN201910882612 A CN 201910882612A CN 110453706 A CN110453706 A CN 110453706A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 102000010637 Aquaporins Human genes 0.000 claims abstract description 35
- 108010063290 Aquaporins Proteins 0.000 claims abstract description 33
- 108091006146 Channels Proteins 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 25
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 3
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 239000010985 leather Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0001—Rubbers
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- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of underwater canopy cofferdam for channel side slopes reparation, it is supported including being arranged in the first of side slope upstream perpendicular to water (flow) direction in support and when the second of side slope downstream is arranged in, described first supports one end positioned at canal bottom to be provided with the plug truss for connecting the two in support and second, first between support and second while supports uniform intervals be provided with a plurality of girder parallel with water (flow) direction, the girder, first while support, second while support and plug truss on be equipped with the panel unit being sequentially connected；The first water sealing structure with the first seepage flow aquaporin is provided between the panel unit, panel unit and side slope/canal bottom liner are provided with the second water sealing structure with the second seepage flow aquaporin between building, and the first seepage flow aquaporin and the interconnected composition of the second seepage flow aquaporin make the water-conveying network at cofferdam seepage water remittance canal bottom.The present invention can be achieved not cutting off the water for high water head large channel side slope and repair dryly.
Description
Technical field
The present invention relates to canal for water conveyance side slope recovery technique fields, more particularly, to a kind of water for channel side slopes reparation
Lower canopy cofferdam.
Background technique
Under normal conditions, it is laid on large-scale canal for water conveyance general main canal (main channel of Water Transfer Project from South to North that such as design head is up to 7m)
Engineering liner plate in slope surface is relatively thin, and be located at liner plate lower layer is therefore the relatively large insulation board of deflection is being run
After a certain period of time, inevitably various side slope damages need the case where repairing.For the total dry of these single lines operation
Canal does not have the condition for maintenance of cutting off the water not only, moreover, having strict requirements to water surface curve and the cross-section of river in operation.It is existing
There is cofferdam repairing construction technology, the reparation of not cutting off the water of shallow water channel of the sealing pressure head less than 2m is only adapted to, if being used for
The reparation of above-mentioned large size canal for water conveyance general main canal, there is also following unsolved technical problems: 1) side's of deep-cutting canal section construction site
Narrow space does not have the extensive condition for carrying out cofferdam scene processing and on-site hoisting；2) existing cofferdam is mostly integral solder
Structure, cannot according to side slope breakage area, channel side slopes than etc. adjustment cofferdam in time size, structure, while having water disconnected
The defect that face is larger, can be affected to channel hydraulic pipeline；3) when side slope area to be repaired is larger, the increase of cofferdam volume, weight
Increase, live mismachining tolerance is big, precision is low, installation when be difficult to be adjusted, position, the overall construction time is long；4) it installs and makes
When with the construction equipment in existing cofferdam, it is easily destroyed the edge slope structure of non-maintenance area；5) under high water head effect, existing cofferdam
Upper load be applied to side slope base pressure it is larger, be easy to bottom liner plate structure formed destroy；6) since side slope serves as a contrast
The damaged face for building plate appears in different zones, and the damaged degree of different zones is also not exactly the same, causes side slope rough and uneven in surface,
Prevent the support in existing cofferdam from carrying out good support to panel, causes panel that cannot be firmly combined, and be easy to stop panel
Water effect damages；7) water sealing structure in existing cofferdam is not able to satisfy the requirement of high water head pressure, is easy to appear cofferdam leak
The case where, increase constructional difficulties, influences underwater construction quality.
Summary of the invention
The present invention provides a kind of underwater canopy cofferdam for channel side slopes reparation, it is therefore intended that solves existing do not cut off the water and encloses
The problem that weir recovery technique is not suitable for high water head canal for water conveyance.
To achieve the above object, the present invention can take following technical proposals:
Underwater canopy cofferdam of the present invention for channel side slopes reparation, including be arranged in side slope perpendicular to water (flow) direction
The first of trip supports when supporting and the second of side slope downstream being arranged in, and described first supports in support and second positioned at canal bottom
One end be provided with the plug truss of both connections, first between support and second while supports uniform intervals be provided with it is a plurality of and
The parallel girder of water (flow) direction, the girder, first while support, second while support and plug truss on be equipped with successively phase
Panel unit even；The first water sealing structure with the first seepage flow aquaporin, panel unit are provided between the panel unit
It is provided with the second water sealing structure with the second seepage flow aquaporin between side slope/canal bottom liner block, first seepage water is logical
Road and the interconnected composition of the second seepage flow aquaporin make the water-conveying network at cofferdam seepage water remittance canal bottom.
It is provided with below the girder and supports the middle support being parallel to each other in support, second with described first.
Described first while support, second while support with it is middle support be edge be successively spirally connected perpendicular to water (flow) direction be connected it is more
Segmentation structure, the plug truss are that Parallel to the flow direction is successively spirally connected connected multi-segment structure.
Every middle support includes the support of winding up being slidably connected on the girder, and the support of winding up passes through height
Degree regulating mechanism is connected with lower edge support.
Described first while support, second while support and it is middle support two sides of the bottom be provided with lead to canal bottom side slope installation
The movable pulley that track matches.
First water sealing structure include the outer water stop rubber item that is arranged at intervals between adjacent panel units joint surface and
Interior water stop rubber item, the outer water stop rubber item is close to ditch water flow side, and the interior water stop rubber item is close to cofferdam workspace
Side then forms the first seepage flow aquaporin between outer water stop rubber item and interior water stop rubber item.
Second water sealing structure includes being arranged at intervals between the panel unit and side slope/canal bottom liner block joint surface
Outer waterstop close to ditch water flow side and the interior waterstop close to cofferdam workspace side, the outer waterstop is cross section
For the rubber water-proof material of omega shape, the interior waterstop is the rubber pneumatic bag that cross section is circular configuration, outer waterstop and
The second seepage flow aquaporin is then formed between interior waterstop, on the second seepage water channel roof panel unit of canal bottom
Offer overflow hole.
Multiple buoyancy tanks are also connected on the panel unit of canal bottom, the buoyancy tank passes through gas tube and fills automatically
Exhaust gear is connected.
The buoyancy tank include the first buoyancy tank positioned at first and second between support and positioned at first and second while support on the outside of
Second buoyancy tank.
Provided by the present invention for the underwater canopy cofferdam of channel side slopes reparation, manufacture peace is carried out using modularized design
Dress, unit module can be in factory scale productions, and machining accuracy is high, recycling can be recycled, and on-site consolidation difficulty is low, assembled
Time is short, and according to the concrete condition of impaired side slope can freely adjust the span in cofferdam and across number, meanwhile, by adjacent
The water sealing structure with seepage flow aquaporin being arranged between panel unit and between panel unit and side slope/canal bottom liner block, it is real
Existing not cutting off the water for high water head large channel side slope is repaired dryly.Its advantage is specific as follows:
1) form cofferdam unit module it is small in size, light-weight, it is easy to process, transport and lifting installation, be very suitable for place compared with
For the narrow side of deep-cutting canal section construction site；Since the standardization level of unit module is higher, installation error is small, precision is high,
Substantially reduce the construction time；
2) it is connected by screw bolts between unit module, can make to push up according to channel side slopes plug truss more suitable than flexible choice
The smooth transition of portion's panel unit, as much as possible the reduction cofferdam cross-section of river, mitigate influence of the cofferdam to channel hydraulic pipeline ability, together
When, size, the structure in cofferdam can be also adjusted according to the big freedom in minor affairs of side slope repaired area；
3) it when installing, by being matched with buoyancy tank locating platform in lifting appliance on the bank, water and channel slope surface track, improves
Positioning accuracy alleviates the destruction caused by non-maintenance area edge slope structure；
4) by the way that regulating mechanism of buoyancy is arranged on the panel unit close to canal bottom, make cofferdam in the base for keeping stability against sliding
On plinth, the pressure that upper load is transmitted in side slope substrate is alleviated, reduces and is broken caused by the liner plate structure of cofferdam bottom
It is bad；
5) the middle support in cofferdam has the function of height adjustment and horizontal displacement, can not only play to scraggly impaired side slope
Good supporting role, and can effectively be mentioned in repair process using storehouse casting method is jumped to slope surface progress concreting
High convenience for construction, shortens the construction time；
6) with the first, second water sealing structure of inside and outside twice waterstop, the cofferdam under high water head pressure has been better meet
Sealing requirement, meanwhile, the water-conveying network that the connection of the first, second water sealing structure is constituted can be such that a small amount of leakage water is smoothly discharged, further
Ensure the leakproofness in cofferdam.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention (omitting regulating mechanism of buoyancy).
Fig. 2 is the A-A sectional view in Fig. 1.
Fig. 3 is the B-B sectional view in Fig. 1.
Fig. 4 is middle support and girder connection relationship diagram in Fig. 3.
Fig. 5 is (the being parallel to slope surface region) water flow of part water-conveying network in Fig. 1 to schematic diagram.
Fig. 6 is the schematic diagram of first water sealing structure on the joint surface panel unit Q1, Q2 in Fig. 5.
Fig. 7 is the schematic diagram of panel unit and the second water sealing structure of slope surface/canal bottom faying face in Fig. 1.
Fig. 8 is the cross-sectional structure schematic diagram of the China and foreign countries Fig. 7 waterstop.
Fig. 9 is the cross-sectional structure schematic diagram of interior waterstop in Fig. 7.
Figure 10 is the structural schematic diagram of regulating mechanism of buoyancy in the present invention.
Specific embodiment
As shown in Figure 1-3, the underwater canopy cofferdam of the present invention for channel side slopes reparation, including perpendicular to water flow
Direction is arranged in the first of side slope upstream and support 2 when supporting 1 and the second of side slope downstream being arranged in, and the first side supports 1 and the
One end that two sides support 2 is located at canal bottom is provided with the plug truss 3 of both connections, and first supports between 2 when supporting 1 and second
Uniform intervals are provided with a plurality of girder 4 being made of I-steel parallel with water (flow) direction, girder 4, the first side support 1, the
It is equipped with the panel unit 5 for being successively spirally connected connected on two sides support 2 and plug truss 3, is provided between adjacent panel units 5
It is provided with and has between the first water sealing structure 6 with the first seepage flow aquaporin 6.1, panel unit 5 and side slope/canal bottom liner block
Second water sealing structure 7 of the second seepage flow aquaporin 7.1, the first seepage flow aquaporin 6.1 and the second seepage flow aquaporin 7.1 are interconnected
Composition makes the water-conveying network at cofferdam seepage water remittance canal bottom.
In order to reduce the influence of supporting member side slope liner structure, first supports 2 end bays to adopt when supporting 1, second
With cantilever design as shown in Figure 2；When side slope damaged area is larger, cofferdam is more than 10m to the length in direction along water flow, need
It is installed below girder 4 and supports 8 in one or more, form multispan canopy cofferdam.Support 8 supports 1, the with the first side among the above
Two sides support 2 is parallel to each other, and is mainly used for sharing the stress of cofferdam upper load side slope bottom.
In order to further decrease the stress of cofferdam upper load side slope bottom, outside the cofferdam close to canal bottom
It is also equipped with multiple buoyancy tanks.Specifically, as shown in Fig. 2,3,10, multiple groups concatenation phase is provided between the first and second side support 1,2
The first buoyancy tank 9.1 even, on the first and second side, 1,2 outside of support is separately installed with the second buoyancy tank 9.2, and above-mentioned buoyancy tank, which passes through, to be filled
Tracheae 9.3 is connected with the automatic aerating/exhausting apparatus structure 9.4 with control device and warning device being mounted on channel bank, leads to
The aeration quantity for overregulating buoyancy tank at different location changes buoyancy size suffered by it, to meet cofferdam support construction and ground is made
Firmly and the balance between subgrade friction power.
As shown in figure 4, support 8 is divided into two sections in every, i.e., by angle in order to adapt to out-of-flatness slope surface in damaged condition
The lower edge branch of wind up support 8.1 and the gridiron being welded by I-steel of the truss structure that steel or L-type steel are welded
Support 8.3, the two are connected by height adjustment mechanism 8.2.In order to avoid stress concentration falls into lower edge support 8.3 in side slope, under
The beam lattice bottom of string support 8.3 is welded with certain thickness backing plate.Above-mentioned height adjustment mechanism 8.2 may be selected hydraulic cylinder, adjust
Lead screw or linear motor etc..When installation, three kinds of components are both secured to support 8.1 of winding up, and adjustable telescopic section passes through piston
Bar, screw rod and support rod directly act on lower edge branch, and 8.3.In order to save the duration, slope surface is mixed usually using storehouse method is jumped
Solidifying soil pours, and therefore, in 8.1 tops of the support installation pulley that winds up, is suspended on pulley on 4 flange plate of girder.It is first right when reparation
Slope surface region other than middle support 8 carries out concreting, later, lifts lower edge support 8.3 by height adjustment mechanism 8.2,
It moves horizontally middle support 8 along girder 4, after reaching the region for having completed concreting, makes 8.3 whereabouts of lower edge support and slope
Face contact supports to be formed again to girder 4, at this point, can construct to non-casting area.
In order to better adapt to the more narrow construction site of the side's of deep-cutting canal section, in conjunction with transport, lifting requirements, above-mentioned first
2, middle support 8 is supported when supporting 1, second and plug truss 3 is sectionally smooth join structure, wherein the first side support 1, second
Side support 2 and middle support 8 are 4 meters one section.When construction, plug truss 3 is first spliced into assembly completion and on it lay panel
Unit 5, the water sealing structure being completed at the same time between panel unit 5, and buoyancy tank is installed；Then, using bolt by the first side of single hop
The 1, second side of support support 2, middle support 8 are connected at the corresponding position of plug truss 3, and install panel unit 5, sealing
Structure and buoyancy tank then in bank lifting equipment and water under the mutual cooperation of buoyancy tank platform, make component is whole to glide along side slope
Certain distance；Later, it Piecemeal erection and is lauched in place according to the method described above, is completed until whole cofferdam installations are in place.For side
Just be lauched movement, first support when supporting 1, second 2 and 8 two sides of the bottom of middle support be mounted on and be laid in side slope
The movable pulley 8.4 that attachment rail towards canal bottom matches.
In order to form good support and facilitate connection, above-mentioned panel unit 5 includes 5.1 He of panel as shown in FIG. 6
Be welded on the channel steel 5.2 of below the panel, wherein channel steel 5.2 is located at 5.1 edge of panel, and wing plate is inside, web to
Outside.When adjacent panel units 5 splice, channel steel web is linked together by inside and outside two rows of bolts 5.3,5.4.
First water sealing structure 6 is set between adjacent panel units 5.Specifically, the panel unit 5 adjacent with cofferdam top surface
It is illustrated for (Q1, Q2 in such as Fig. 5).As shown in fig. 6, the connection bolt 5.3,5.4 on 5 joint surface of adjacent panel units
The upper locating piece 5.5,5.6 being equipped between channel steel web respectively is equipped on the outside of locating piece 5.6 direct with ditch water flow
The outer water stop rubber item 6.2 being in contact is equipped with interior water stop rubber item 6.3, outer, interior water stop rubber item on the outside of locating piece 5.5
6.2,6.3 interval setting, forms the first seepage flow aquaporin 6.1 between the two.Outer water stop rubber item 6.2 is General Purpose Rubber, interior
Water stop rubber item 6.3 is hydro-expansive rubber.The thickness of above-mentioned locating piece 5.5,5.6 no more than outer, interior water stop rubber item 6.2,
6.3 by compressed thickness.Cofferdam rest part, i.e., while support between the adjacent panel units 5 that are laid with horizontal direction of both sides, while
Support side between the adjacent panel units 5 that are vertically laid with, the adjacent panel units 5 of side support side and top surface joint it
Between the first water sealing structure 6 according to mentioned above principle, (i.e. the first seepage flow aquaporin 6.1 is along jointing line direction, inside and outside water stop rubber
Item is separately mounted to close to workspace side and close to channel flowing water side) it is configured.In use, outer water stop rubber item is used for
Most channel flowing water pressure is kept out, a small amount of seepage water can be discharged to designated position along seepage flow aquaporin, thus in making only
Water rubber item is in approximate no pressure, it is ensured that the leakproofness in cofferdam.
Panel unit 5 and slope surface/canal bottom liner are provided with the second water sealing structure 7 between building.Specifically, as shown in fig. 7, comprises
The interior waterstop 7.3 of the outer waterstop 7.2 of spaced close ditch water flow side and close cofferdam workspace side, it is outer to stop
Water band 7.2 is the rubber water-proof material (as shown in Figure 8) that cross section is omega shape, and interior waterstop 7.3 is that cross section is round
The rubber pneumatic bag (as shown in Figure 9) of structure, then forms the second seepage flow aquaporin between outer waterstop 7.2 and interior waterstop 7.3
7.1, overflow hole 7.4 is offered on the 7.1 top panel unit 5 of the second seepage flow aquaporin of canal bottom.Above-mentioned interior waterstop
7.3 use airbag form, can adapt to the lining cutting surface of out-of-flatness by adjusting intracapsular tolerance, improve the sealing of contact surface
Property；Meanwhile outer water stop rubber item can keep out most channel flowing water pressure, a small amount of seepage water is then arranged along seepage flow aquaporin
To designated position, it is ensured that the water blocking performance in cofferdam.
All seepage flow aquaporins are interconnected and form water-conveying network.As shown in figure 5, the first seepage flow aquaporin on the top surface of cofferdam
First seepage flow aquaporin 6.1 of the seepage water from centre to both sides, from eminence to lower through side in 6.1 converges to respectively to be located at
In the second seepage flow aquaporin 7.1 at slope surface/canal bottom liner block, then positioned at the seepage water at slope surface in the second seepage flow aquaporin 7.1
It is converged in the second seepage flow aquaporin 7.1 of canal bottom from high in the end, it, can be from being arranged in top panel list when water is more
Overflow hole 7.4 in member 5 flows out, and when reaching a certain amount of, carries out pump drainage by suction pump 10 as shown in Figure 2.
The present invention is highly suitable for that channel side slopes are steep, the biggish side slope of the depth of water is repaired under water dryly, simultaneously can be used for river
The bank slopes reparation such as road, reservoir dam.
Claims (9)
1. a kind of underwater canopy cofferdam for channel side slopes reparation, it is characterised in that: including existing perpendicular to water (flow) direction setting
The first of side slope upstream is supporting (1) and when the second of side slope downstream is arranged in support (2), and first side supports (1) and the
One end that two sides support (2) is located at canal bottom is provided with the plug truss (3) of both connections, and first in support (1) and branch when second
Uniform intervals are provided with a plurality of girder parallel with water (flow) direction (4), the girder (4), the support of the first side between support (2)
(1), the panel unit (5) being sequentially connected is equipped on the second side support (2) and plug truss (3)；The panel unit (5)
Between be provided with the first water sealing structure (6) with the first seepage flow aquaporin (6.1), panel unit (5) and side slope/canal bottom liner are built
Between be provided with the second water sealing structure (7) with the second seepage flow aquaporin (7.1), the first seepage flow aquaporin (6.1)
Be interconnected the water-conveying network for forming and cofferdam seepage water being made to import canal bottom with the second seepage flow aquaporin (7.1).
2. the underwater canopy cofferdam according to claim 1 for channel side slopes reparation, it is characterised in that: the girder
(4) lower section is provided with the middle support (8) for supporting (2) to be parallel to each other when supporting (1), second with described first.
3. the underwater canopy cofferdam according to claim 2 for channel side slopes reparation, it is characterised in that: first side
Support (1), the second side support (2) and middle support (8) are that edge is successively spirally connected the multi-segment structure being connected perpendicular to water (flow) direction,
The plug truss (3) is that Parallel to the flow direction is successively spirally connected connected multi-segment structure.
4. the underwater canopy cofferdam according to claim 2 for channel side slopes reparation, it is characterised in that: every it is described in
Support (8) includes being slidably connected at winding up support (8.1) on the girder (4), and the support (8.1) of winding up passes through height
Regulating mechanism (8.2) is connected with lower edge support (8.3).
5. the underwater canopy cofferdam according to claim 2 for channel side slopes reparation, it is characterised in that: first side
Support (1), the second side support (2) and middle support (8) two sides of the bottom are provided with to match with the side slope attachment rail for leading to canal bottom
The movable pulley (8.4) of conjunction.
6. the underwater canopy cofferdam according to claim 1 for channel side slopes reparation, it is characterised in that: described first stops
Water-bound (6) includes outer water stop rubber item (6.2) and the interior sealing rubber being arranged at intervals between adjacent panel units (5) joint surface
Leather strap (6.3), the outer water stop rubber item (6.2) is close to ditch water flow side, and the interior water stop rubber item (6.3) is close to cofferdam
Workspace side then forms the first seepage flow aquaporin between outer water stop rubber item (6.2) and interior water stop rubber item (6.3)
(6.1).
7. the underwater canopy cofferdam according to claim 1 for channel side slopes reparation, it is characterised in that: described second stops
Water-bound (7) includes the close ditch water flow being arranged at intervals between the panel unit (5) and side slope/canal bottom liner block joint surface
The interior waterstop (7.3) of the outer waterstop (7.2) of side and close cofferdam workspace side, the outer waterstop (7.2) are horizontal
Section is the rubber water-proof material of omega shape, and the interior waterstop (7.3) is the rubber pneumatic bag that cross section is circular configuration, outside
The second seepage flow aquaporin (7.1) is then formed between waterstop (7.2) and interior waterstop (7.3), positioned at the second of canal bottom
Overflow hole (7.4) are offered on seepage flow aquaporin (7.1) top panel unit (5).
8. the underwater canopy cofferdam according to claim 1 for channel side slopes reparation, it is characterised in that: close to canal bottom
The panel unit (5) on be also connected with multiple buoyancy tanks, the buoyancy tank is connected by gas tube with automatic aerating/exhausting apparatus structure.
9. the underwater canopy cofferdam according to claim 7 for channel side slopes reparation, it is characterised in that: the buoyancy tank packet
It includes the first buoyancy tank being located at first and second between support (1,2) and supports the second buoyancy tank on the outside of (1,2) when being located at first and second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882612.0A CN110453706B (en) | 2019-09-18 | 2019-09-18 | Underwater awning type cofferdam for repairing side slope of channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882612.0A CN110453706B (en) | 2019-09-18 | 2019-09-18 | Underwater awning type cofferdam for repairing side slope of channel |
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| Publication Number | Publication Date |
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| CN110453706A true CN110453706A (en) | 2019-11-15 |
| CN110453706B CN110453706B (en) | 2024-06-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456048A (en) * | 2020-04-18 | 2020-07-28 | 中电建十一局工程有限公司 | Underwater operation construction method for channel defect treatment |
| CN112962529A (en) * | 2021-02-04 | 2021-06-15 | 深圳市龙坚建筑工程有限公司 | Underwater awning type cofferdam for repairing channel side slope and repairing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110453706B (en) | 2024-06-04 |
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