CN106193074A - The steel cofferdam repaired for channel - Google Patents
The steel cofferdam repaired for channel Download PDFInfo
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- CN106193074A CN106193074A CN201610553857.5A CN201610553857A CN106193074A CN 106193074 A CN106193074 A CN 106193074A CN 201610553857 A CN201610553857 A CN 201610553857A CN 106193074 A CN106193074 A CN 106193074A
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- cofferdam
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- base plate
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- 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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Abstract
The present invention provides a kind of steel cofferdam repaired for channel.Three water-retaining cofferdams that described steel cofferdam is enclosed by longitudinal cofferdam and two transverse cofferdams, described longitudinal cofferdam is to be spliced by two landing edge cofferdam and one or more longitudinal interlude cofferdam；Each transverse cofferdam is to be spliced by transverse joint section cofferdam, one or more horizontal interlude cofferdam, horizontal rear cofferdam；Every section of cofferdam is by floating box type base plate and the sealing water fender composition being perpendicular to floating box type base plate, each floating box type base plate is provided with the connecting elements of base plate box with adjacent floating splicing, transverse cofferdam is respectively by connecting in the groove that inserted block inserts on respective side landing edge cofferdam on its transverse joint section cofferdam, and is tightly connected with longitudinal cofferdam.Present configuration is simple, easy to use, can repair channel, its low cost under water-less environment, and repairing effect is good.
Description
Technical field
The present invention relates to a kind of cofferdam, a kind of steel cofferdam repaired for channel.
Background technology
Owing to distribution of water resources is uneven, in order to alleviate the short water supply situation of water-deficient area, large-scale defeated water diversion project is met the tendency
And give birth to.Wherein project of South-to-North water diversion is to solve China's distribution of water resources contradiction incompatible with social productive forces layout, promotion
The flourishing important infrastructure with social development with water-deficient area sustainable development of preserving the ecological environment, support of regional economy.South
Middle Route Project total length 1432km is adjusted in water north, including general main canal and Tianjin canal two parts.General main canal is from pottery trouble head works extremely north
In Juma River, Zhi Nanan is open channel section, and canal line total length 1197km (the wherein long 1103km of channel), mainly by entirely digging, entirely filling out and partly dig
Matter of partly banketing channel forms, and small part is cubic meter of stone channel and Tu Yan combines channel.
Center line general main canal channel uses trapezoidal cross-section, tunneling boring cast-in-place concrete liner plate.Canal cross section bottom width about 29～
7m, slope coefficient about 2.0～3.5, design head 8m～3.8m.Canal slope concrete lining thickness of slab 10cm, canal base concrete lining cutting
Thickness of slab 8cm, canal slope parting is mono-straight joint of every 12m, every mono-dummy joint of 4m between 12m；Lining concrete strength grade is C20,
Primarily serve protection bottom geomembrane, reduce the effect of roughness.The composite geo-membrane of liner plate bottom is whole channel
Impervious barrier, geomembrane bottom is basic unit, and part canal pars infrasegmentalis is warming plate.
South water to north channel concrete lining plate during transfer water project is run shape by channel SEA LEVEL VARIATION, drainage system
The impact of the many factors such as condition, freeze thawing, construction quality, it is possible that ftracture, subside, the damage of the form such as anti-floating unstability, when
Liner plate occur destroy time, can cause to a certain extent local head loss increase, seepage prevention system destroy, serious time cause slope
The softening of body soil causes slope instability, has influence on the safe operation of channel.After putting into operation due to center line general main canal, it is responsible for northwards
The large-and-medium size cities such as capital, Tianjin resident living and industrial water supply task, interruption of once supplying water, affect wide, cause
Social influence is big.The channel repair mode do not cut off the water supply at present mainly has two kinds, and one is to repair under water, but restorative procedure under water
Its recovery capability is limited, and rehabilitation expense is high, and repairing effect is inconspicuous；Another is that cofferdam, local is repaired, although locally
Cofferdam scheme the most substantially can by design requirement repair, but cofferdam, existing local during repairing to channel hydraulic pipeline
Will result in certain impact, and owing to cofferdam volume is big, installing and removing the most cumbersome, channel cleaning difficulty after dismounting
Greatly.
Summary of the invention
The present invention provides a kind of steel cofferdam repaired for channel according to the deficiencies in the prior art, and this cofferdam is adaptable to not
With the channel of build, different parts in channel is quickly moved, install, remove, maintenance effect, and can be recycled, it is simple to dimension
Protect maintenance and transport is deposited, dry maintenance condition can be createed in the case of not interrupting channel water flowing.
The technical scheme that the present invention provides: described a kind of steel cofferdam repaired for channel, it is characterised in that: described steel encloses
Weir is by the longitudinal cofferdam identical with water (flow) direction and to be placed in longitudinal cofferdam both sides and the transverse cofferdam vertical with water (flow) direction encloses
Three water-retaining cofferdams closed, described longitudinal cofferdam is to be enclosed by two landing edge cofferdam and one or more longitudinal interlude
Weir is spliced；Each transverse cofferdam is to be enclosed by transverse joint section cofferdam, one or more horizontal interlude cofferdam, horizontal rear
Weir is spliced；Described landing edge cofferdam, longitudinal interlude cofferdam, transverse joint section cofferdam, horizontal interlude cofferdam and horizontal stroke
To rear cofferdam by floating box type base plate and the sealing water fender composition being perpendicular to floating box type base plate, on each floating box type base plate
Be provided with base plate box with adjacent floating splicing connecting elements, the floating box type base plate in joint cofferdam longitudinally in each is provided with laterally
The groove that cofferdam connects, is connected end in transverse joint section cofferdam with landing edge cofferdam and is provided with connection inserted block, laterally enclosing of both sides
Weir is inserted in the groove on respective side landing edge cofferdam by the connection inserted block on its transverse joint section cofferdam respectively, and with vertical
It is tightly connected to cofferdam.
The further technical scheme of the present invention: the water fender in every section of cofferdam of described longitudinal cofferdam and transverse cofferdam and buoyancy tank
Formula base plate is connected by rotating mechanism, and described rotating mechanism includes rotating shaft, hydraulic jack and hydraulic control system, described in rotating shaft
Having two, be separately positioned on water fender two bottom sides, the cylinder body end of hydraulic jack is fixed on floating box type base plate, and piston end is fixed
On water fender, described hydraulic control system is placed in water fender top, and under the control of hydraulic control system, hydraulic jack stretches
Drive water fender along axis of rotation to being parallel or perpendicular to floating box type base plate.
The present invention preferably technical scheme: described connecting elements is by positioning tooth and the locking cylinder that can be mutually matched clamping
Composition；In every section of cofferdam of described longitudinal cofferdam, floating box type baseplate width is equal, at the bottom of the floating box type in interlude cofferdam longitudinally in each
Plate is respectively provided on two sides with positioning tooth, at the bottom of the floating box type in the floating box type base plate in joint cofferdam longitudinally in each and longitudinal interlude cofferdam
Plate connects side and is provided with positioning tooth, and the positioning tooth on two adjacent floating box type base plates is mutually matched clamping, and is locked by locking cylinder；
The floating box type baseplate width in described transverse joint section cofferdam, horizontal interlude cofferdam and horizontal rear cofferdam is sequentially reduced, at horizontal stroke
Connection end to junction cofferdam and horizontal rear cofferdam and horizontal interlude cofferdam is respectively equipped with positioning tooth, at horizontal interlude
The both sides in cofferdam are equipped with positioning tooth, arrange the horizontal interlude cofferdam positioning tooth width near side, transverse joint section cofferdam and are more than
Near the width of the positioning tooth of side, horizontal rear cofferdam, and the positioning tooth on two adjacent transverse cofferdams is mutually matched clamping, and leads to
Cross locking cylinder locking.
The present invention preferably technical scheme: be provided with charge and discharge water liquid on described longitudinal cofferdam and transverse cofferdam every section cofferdam
Control valve and air compression valve.
The present invention preferably technical scheme: the floating box type base plate in joint cofferdam longitudinally in each is connected side with transverse cofferdam and sets
Having protrusion contiguous block, the bottom surface protruding contiguous block is inclined plane, and described groove is opened on protrusion contiguous block, is protruding contiguous block
Bottom surface be provided with the first sealing rubber pad；Described transverse joint section cofferdam is for being inverted L-type casing, and its laterally protruding part is formed even
Patch block, and identical with the size of groove, be inverted the transverse joint section cofferdam of L-type casing by its laterally protruding be partially submerged into recessed
In groove, and it is provided with the second sealing rubber pad at both joint face.
The present invention preferably technical scheme: the floating box type base plate in every section of cofferdam of described longitudinal cofferdam and transverse cofferdam and gear
The side that water plate connects is provided with connecting lateral plate, and the joint face of connecting lateral plate and water fender is low inside and high outside inclined plane, and
The 3rd sealing rubber pad it is provided with between water fender and connecting lateral plate.
The present invention preferably technical scheme: the transverse joint section cofferdam of described transverse cofferdam, one or more horizontal centre
After section cofferdam, the splicing of horizontal rear cofferdam, its water fender forms into the angle end triangular baffle towards rear cofferdam, and two
Seal between the water fender in the water fender in the transverse joint section cofferdam of individual transverse cofferdam and the landing edge cofferdam of respective side and touch,
And it is provided with the 4th sealing rubber pad at contact surface.
The present invention preferably technical scheme: the water fender of described longitudinal cofferdam and transverse cofferdam be by front water fender, two
Side water fender and top board composition, described hydraulic control system is placed on top board, and both sides water fender is respectively by rotating shaft and floating box type
Base plate connects, and the middle position of floating box type base plate is fixed in one end of hydraulic jack, and the other end is connected to the central authorities of front water fender
Position.
The present invention preferably technical scheme: be provided with between two adjacent floating box type base plates in described longitudinal cofferdam and transverse cofferdam
5th sealing rubber pad；It is provided with the 6th sealing rubber pad in the bottom surface of each floating box type base plate.
The present invention preferably technical scheme: be separated into multiple cavity, and multiple chamber by dividing plate in described floating box type base plate
The top of body is interconnected, and described charge and discharge water fluid-control valve is arranged on the side cavity that floating box type base plate is contrary with water fender.
Each floating box structure size of the present invention is not more than following size: length is less than 20 meters more than 14 meters (containing 14 meters)；
Width is less than 4.5 meters more than 3.5 meters (containing 3.5 meters)；Highly more than 3 meters (containing 3 meters) less than 3.8 meters；Weight is more than 20 tons (containing 20
Ton) less than 100 tons.Floating box structure transportation clearance is not more than above-mentioned size.
Described longitudinal cofferdam is floating box structure maximum travel position contour dimension: long 9 meters, wide 5 meters, high 3.0 meters, transport heavy
Measure 45 tons.The water fender of buoyancy tank can 7.2 meters of dash head.During transport, backwater gate is flat to crouch on buoyancy tank casing.During dash, liquid
The cylinder pressure operation vertical dash of backwater gate, sets charge and discharge water fluid-control valve, and air compression valve in buoyancy tank.The buoyancy tank of transverse cofferdam
The travel position contour dimension control that structure is maximum: long 9 meters, wide 5 meters, high 3.0 meters, hauled weight 45 tons.Buoyancy tank horizontally-inclined is enclosing
On slope, weir, the water fender of upper surface is abnormity water fender, 7.2 meters of junction dash head.During dash, hydraulic cylinder operation dash
The vertical dash of gate, sets charge and discharge water fluid-control valve and air compression valve in buoyancy tank.
The end construction that transverse cofferdam of the present invention couples with longitudinal cofferdam is abnormity box-structure, according to the maximum slope gradient
1:2 design upwarps angle, and it is suitable for such as difference channel ramp slopes such as 1:2～3.5；Transverse cofferdam is near upper end, channel slope
Using triangle projective planum gate, under dash state, triangle projective planum gate lower end water stop rubber is close on slope.Longitudinal cofferdam with
The end construction that transverse cofferdam couples is mobilizable box structure, and hydraulic cylinder operates, and lower end box structure is used for and laterally encloses
Weir sealing also serves as the water pressure bearing transverse cofferdam, and upper end box structure is used for and transverse cofferdam sealing, and water pressure is passed through
Hydraulic cylinder passes to transverse cofferdam.For preventing the hydraulic oil pollution to channel water quality, adopt and use water as hydraulic medium.
Beneficial effects of the present invention:
(1) present invention can create dry maintenance condition, be adaptable to not consubstantiality in the case of not interrupting channel water flowing
Type channel, is adaptable to different building shape channel, quickly moves different parts in channel, installs, removes, upkeep operation,
And meet conveniently transport and deposit；
(2) steel cofferdam of the present invention can be assembled on the water surface, assembly complete after submerged again, it is to avoid can be right
The pollution of channel water quality, reduces the impact on channel hydraulic pipeline, will not be to the destruction of canal lining plate；
(3) present invention uses metal structure buoyancy tank hydraulic operation temporary water dash measure, and at the same area, different monoliths
Can fast transfer assembled, do not affect current.
(4) cofferdam of the present invention can adapt to channel side slopes coefficient 2.0～3.5m, cofferdam safely, quickly, capable of circulation make
With, and it is easy to maintaining.
The present invention is relatively small to channel hydraulic pipeline capacity, and can be repeated several times use, little to environment and influence on water body,
It is little that it builds volume, it is simple to installing, transport, deposit and maintaining, the big I in operating area determines as required, arranges more
Flexibly, adapt to multiple Slope Shape, and dash operation stability is preferable.This scheme exist with at the bottom of liner plate canal and side slope contacts
The technical problems such as the sealing between face.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention；
Fig. 2 is the top view of the present invention；
Fig. 3 be longitudinal cofferdam water fender in vertical state time the present invention side view；
The side view of present invention when Fig. 4 is the water fender folding of longitudinal cofferdam；
Fig. 5 is the top view of transverse cofferdam of the present invention；
Fig. 6 is the side view of transverse cofferdam of the present invention；
Fig. 7 is the connection diagram of buoyancy tank in the present invention；
Fig. 8 is the structural representation of buoyancy tank in the present invention；
Fig. 9 is the structural representation in longitudinal interlude cofferdam in the present invention；
Figure 10 is the structural representation in landing edge section cofferdam in the present invention；
Figure 11 is the structural representation in horizontal interlude cofferdam in the present invention；
Figure 12 is transverse joint section cofferdam top view in the present invention；
Figure 13 is transverse joint section cofferdam front view in the present invention；
Figure 14 is transverse joint section cofferdam side view in the present invention；
Figure 15 is horizontal rear cofferdam side view in the present invention；
Figure 16 is horizontal rear cofferdam front view in the present invention；
Figure 17 is horizontal rear cofferdam top view in the present invention；
Figure 18 is transverse cofferdam and the structural representation of longitudinal cofferdam junction in the present invention；
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.A kind of steel repaired for channel as shown in Figure 1 and Figure 2
Cofferdam, it is characterised in that: described steel cofferdam be by the longitudinal cofferdam 1 identical with water (flow) direction and be placed in longitudinal cofferdam both sides and with
Three water-retaining cofferdams that the vertical transverse cofferdam 2 of water (flow) direction encloses, described longitudinal cofferdam 1 is to be enclosed by two landing edges
Weir 1-1 and one or more longitudinal interlude cofferdam 1-2 is spliced, and the number of longitudinal interlude cofferdam 1-2 is tieed up as required
The length repairing channel determines, it is ensured that all fenced up by all channels to be repaired；The most each transverse cofferdam 2 is
It is spliced, laterally by transverse joint section cofferdam 2-1, one or more horizontal interlude cofferdam 2-2, horizontal rear cofferdam 2-3
The number of interlude cofferdam 2-2 determines according to the length that channel is domatic.Described longitudinal cofferdam 1 and every section of cofferdam of transverse cofferdam 2
The side that is connected with water fender 4 of floating box type base plate 3 be provided with connecting lateral plate 3-1, and the connection of connecting lateral plate 3-1 and water fender 4
Face is low inside and high outside inclined plane, and is provided with the 3rd sealing rubber pad 12-2 between water fender 4 and connecting lateral plate 3-1, permissible
Make water fender 4 be connected with connecting lateral plate 3-1 open mode lower seal, and press tighter and tighter under the effect of side hydraulic pressure outside, it is to avoid
In the region that water leakage cofferdam encloses.Described longitudinal cofferdam 1 and transverse cofferdam 2 are provided with the 5th between two adjacent floating box type base plates 3
Sealing rubber pad 12-4, can make the tightr of biphase adjacent cofferdam connection；It is provided with the 6th in the bottom surface of each floating box type base plate 3
Sealing rubber pad 12-5, can make bottom surface, cofferdam fit with water channel sealing bottom surface under the effect of hydraulic pressure.
As shown in Fig. 9, Figure 10, Figure 11, Figure 14 and Figure 15, described landing edge cofferdam 1-1, longitudinal interlude cofferdam 1-2,
Transverse joint section cofferdam 2-1, horizontal interlude cofferdam 2-2 and laterally rear cofferdam 2-3 by floating box type base plate 3 and are perpendicular to float
The sealing water fender 4 of box base plate 3 forms, and is provided with the connection of base plate box with adjacent floating splicing on each floating box type base plate 3
Component 6.The water fender 4 in every section of cofferdam of described longitudinal cofferdam 1 and transverse cofferdam 2 is with floating box type base plate 3 by rotating mechanism even
Connecing, described rotating mechanism includes rotating shaft 5, hydraulic jack 9 and hydraulic control system 10, and described have two in rotating shaft 5, is respectively provided with
In water fender 4 two bottom sides, the cylinder body end of hydraulic jack 9 is fixed on floating box type base plate 3, and piston end is fixed on water fender 4,
Described hydraulic control system 10 is placed in water fender 4 top, and under the control of hydraulic control system 10, hydraulic jack 9 is flexible drives gear
Water plate 4 turns to be parallel or perpendicular to floating box type base plate 3 along rotating shaft 5.Described longitudinal cofferdam 1 and the water fender 4 of transverse cofferdam 2
Being made up of front water fender 4-1, both sides water fender 4-2 and top board 4-3, described hydraulic control system 10 is placed on top board 4-3,
Both sides water fender 4-2 is connected with floating box type base plate 3 by rotating shaft 5 respectively, and floating box type base plate 3 is fixed in one end of hydraulic jack 9
Middle position, the other end is connected to the middle position of front water fender 4-1.
As shown in Figure 8, the floating box type base plate 3 in described longitudinal cofferdam 1 and every section of cofferdam of transverse cofferdam 2 is provided with charge and discharge water
Fluid-control valve 13 and air compression valve 14, can be used to water-filling so that it is sinks, or inflation makes it float.Described buoyancy tank
It is separated into multiple cavity by dividing plate in formula base plate 3, and the top of multiple cavity is interconnected, described charge and discharge water fluid-control valve 13
It is arranged on the side cavity that floating box type base plate 3 is contrary with water fender 4, it can be ensured that when water-filling, first fill outside buoyancy tank,
Keep the balance in whole cofferdam.
As shown in Figure 10, the floating box type base plate 3 at joint cofferdam 1-1 longitudinally in each is connected side with transverse cofferdam 2 and is provided with convex
Going out contiguous block 11, the bottom surface protruding contiguous block 11 is inclined plane, is connected with transverse cofferdam 1 protruding to offer on contiguous block 11
Groove 7, is provided with the first sealing rubber pad 12 in the bottom surface protruding contiguous block 11；As depicted in figure 5 and figure 12, described transverse joint section
Cofferdam 2-1 is for being inverted L-type casing, and the formation of its laterally protruding part is connected end and is provided with connection inserted block 8 with landing edge cofferdam 1-1,
This connection inserted block is identical with the size of groove 7.As shown in 18, the transverse joint section cofferdam 2-1 being inverted L-type casing is horizontal by it
Projection embeds in groove 7, and is provided with the second sealing rubber pad 12-1 at both joint face.
As it is shown in fig. 7, described connecting elements 6 is by positioning tooth 6-1 and the locking cylinder 6-2 group that can be mutually matched clamping
Become；In every section of cofferdam of described longitudinal cofferdam 1, floating box type base plate 3 width is equal, at the floating box type of interlude cofferdam 1-2 longitudinally in each
Base plate 3 is respectively provided on two sides with positioning tooth 6-1, in floating box type base plate 3 and longitudinal interlude cofferdam of joint cofferdam 1-1 longitudinally in each
The floating box type base plate 3 of 1-2 connects side and is provided with positioning tooth 6-1, the positioning tooth 6-1 on two adjacent floating box type base plates 3 and is mutually matched card
Connect, and locked by locking cylinder 6-2；As it is shown in figure 5, described transverse joint section cofferdam 2-1, horizontal interlude cofferdam 2-2 and
Laterally the floating box type baseplate width of rear cofferdam 2-3 is sequentially reduced, at transverse joint section cofferdam 2-1 and horizontal rear cofferdam 2-3
It is respectively equipped with positioning tooth 6-1 with the connection end of horizontal interlude cofferdam 2-2, is equipped with in the both sides of horizontal interlude cofferdam 2-2
Positioning tooth 6-1, arranges the horizontal interlude cofferdam 2-2 positioning tooth 6-1 width near 2-1 side, transverse joint section cofferdam more than close
The laterally width of the positioning tooth 6-1 of 2-3 side, rear cofferdam, and the positioning tooth 6-1 on two adjacent transverse cofferdams is mutually matched clamping,
And locked by locking cylinder 6-2.
As shown in Figure 6, the transverse joint section cofferdam 2-1 of described transverse cofferdam 1, one or more horizontal interlude cofferdam 2-
2, after horizontal rear cofferdam 2-3 splicing, its water fender 4 forms into the angle end triangular baffle towards rear cofferdam, such as Fig. 3
Shown in Fig. 4, the water fender 4 of the transverse joint section cofferdam 2-1 of two transverse cofferdams is with the landing edge cofferdam 1-1's of respective side
Seal between water fender 4 and touch, and be provided with the 4th sealing rubber pad 12-3 at contact surface, under the effect of hydraulic pressure, transverse cofferdam
It is connected tightr with longitudinal cofferdam.
Below in conjunction with embodiment, the invention will be further described, the cofferdam length of buoyancy tank in embodiment 5 meters, and bottom is wide 9 meters,
Weight 45 tons, equivalent every meter of weight 9.0 tons.Consider by the 7m depth of water
Every linear meter(lin.m.) water weight: 9 × 7=63 ton
Buoyancy tank is conducted oneself with dignity: 45.0 tons, every linear meter(lin.m.) 9.0 tons
Every horizontal water pressure of linear meter(lin.m.): (7 × 7)/2=24.5 ton
(1) Against Sliding Stability between bottom and canal liner plate
Coefficient of friction between bottom and canal liner plate takes 0.45；Factor against sliding is:
K=(63+9) × 0.45/24.5=1.322；
(2) antidumping is stable
Stabilizing moment: 72 × 4.5=324 ton rice
Tilting moment: 24.5 × 2.4=58.8 ton rice
Buckling safety factor: 324/58.5=5.51
(3) base stress calculates
The additional stress that level causes to water pressure:
б=58.8 × 6/81=4.35t/m2
Substrate maximum stress=7.5+4.35=11.85t/m2=118.5kPa；
Substrate minimum stress=7.5-4.35=3.15t/m2=31.5kPa；
Liner plate foundation bearing capacity is considered to meet requirement by 150kPa.
The present invention in a pre-installation, needs the mud at the bottom of maintenance canal section and a range of local, two ends canal section canal and foreign material
Clearing up, cleaning work can use giant water surface operation to carry out in diving under water operative cooperation, and cleaning scope is cofferdam
Foundation ditch respectively extends 50m to two ends.Take out cofferdam and the 2nd (osculum spacing is more than or equal to 5m) or the 3 (drainings that external boundary is outside are installed
Pitch of holes is less than or equal to 4m) arrange the non-return valve being arranged on longitudinal Water penetrative flexible pipe, and Special ball shape obturator is set in hole, resistance
The water stream channel (seeing red circle in schematic diagram) of plug Water penetrative flexible pipe, installs special miniature immersible pump.
Steel cofferdam installation steps in the present invention:
1) after steel cofferdam being transported to job site, then assemble, assemble longitudinal cofferdam 1 and transverse cofferdam the most respectively
2, and connected by connecting elements 6, the water fender 4 in cofferdam is all the level of state；
2) flat car and hoisting hook is used directly to hang in water channel 12 by the transverse cofferdam 2 assembled and longitudinal cofferdam 1,
And make it floating on the water surface, fixing；
2) utilize back work ship or cofferdam power set by steel cofferdam transportation by driving to tram；
3) water fender 4 of every section of cofferdam floating box type base plate 3 of longitudinal cofferdam 1 is strutted, and by longitudinal cofferdam buoyancy tank and dash
Quickly connect with hydraulic cylinder between plate；
4) moving transverse cofferdam 2 buoyancy tank makes the transverse joint section of transverse cofferdam 2 lean against the end longitudinally enclosing 1 weir buoyancy tank, and
Landing edge section cofferdam 1-1 upper groove 7 grafting of inserted block 8 and longitudinal cofferdam two ends will be connected, so on transverse joint section cofferdam 2-1
Water fender 4 on rear distraction transverse cofferdam 2 buoyancy tank, and make landing edge section cofferdam 1-1 and transverse joint section cofferdam 2-1 seal connection
Connect, and by fluid-control valve 13 water-filling in floating box type base plate that discharges water, sink to channel bottom；
5) buoyancy tank and the bottom of water fender and both sides thereof are respectively arranged sealing rubber pad (water stop rubber), during dash, such as Fig. 3
Shown in, the hydraulic cylinder operation vertical dash of water fender 3；
6) after cofferdam is formed, use high-capacity pump pump drainage steel cofferdam working area internal water accumulation, expose maintenance channel face.Along with
Water level decreasing in cofferdam, uses waterstop that local, cofferdam leakage area is carried out embedding stifled sealing, until water is got rid of clean in cofferdam；
7) after forming anhydrous working environment in steel cofferdam, carry out the repair in cofferdam, treat that liner plate reparation is checked and accepted and close
After lattice, remove steel cofferdam.
When steel cofferdam is removed, in cofferdam, first fill water, then utilize the air compressor machine air compression from steel cofferdam top
Valve 14 is slowly inflated in steel cofferdam tank wall, makes steel cofferdam buoyancy tank float, to carry out the construction of next procedure.
Claims (10)
1. the steel cofferdam repaired for channel, it is characterised in that: described steel cofferdam is by the longitudinal direction identical with water (flow) direction
Cofferdam (1) and three water-retaining cofferdams being placed in longitudinal cofferdam both sides and the transverse cofferdam (2) vertical with water (flow) direction encloses,
Described longitudinal cofferdam (1) is by two landing edge cofferdam (1-1) and the splicing of one or more longitudinal interlude cofferdam (1-2)
Become；Each transverse cofferdam (2) is by transverse joint section cofferdam (2-1), one or more horizontal interlude cofferdam (2-2), laterally
(2-3) is spliced in rear cofferdam；Described landing edge cofferdam (1-1), longitudinal interlude cofferdam (1-2), transverse joint section are enclosed
Weir (2-1), horizontal interlude cofferdam (2-2) and horizontal rear cofferdam (2-3) by floating box type base plate (3) and are perpendicular to floating box type
Sealing water fender (4) composition of base plate (3), is provided with the company of base plate box with adjacent floating splicing on each floating box type base plate (3)
Connection member (6), is provided with, on the floating box type base plate (3) of joint cofferdam (1-1) longitudinally in each, the groove being connected with transverse cofferdam (1)
(7), it is connected end with landing edge cofferdam (1-1) in transverse joint section cofferdam (2-1) and is provided with connection inserted block (8), both sides horizontal
Respective side landing edge cofferdam (1-is inserted by the connection inserted block (8) on its transverse joint section cofferdam (2-1) respectively in cofferdam (1)
1) in the groove (7) on, and it is tightly connected with longitudinal cofferdam (1).
A kind of steel cofferdam repaired for channel the most according to claim 1, it is characterised in that: described longitudinal cofferdam (1)
It is connected by rotating mechanism with floating box type base plate (3) with the water fender (4) in every section of cofferdam of transverse cofferdam (2), described rotating machine
Structure includes rotating shaft (5), hydraulic jack (9) and hydraulic control system (10), and described have two in rotating shaft (5), is separately positioned on gear
Water plate (4) two bottom sides, the cylinder body end of hydraulic jack (9) is fixed on floating box type base plate (3), and piston end is fixed on water fender
(4), on, described hydraulic control system (10) is placed in water fender (4) top, hydraulic oil under the control of hydraulic control system (10)
Cylinder (9) is flexible drives water fender (4) to turn to be parallel or perpendicular to floating box type base plate (3) along rotating shaft (5).
A kind of steel cofferdam repaired for channel the most according to claim 1 and 2, it is characterised in that: described connecting elements
(6) it is made up of the positioning tooth (6-1) and locking cylinder (6-2) that can be mutually matched clamping；Described longitudinal cofferdam (1) every section of cofferdam
Middle floating box type base plate (3) width is equal, and the floating box type base plate (3) at interlude cofferdam (1-2) longitudinally in each is respectively provided on two sides with
Positioning tooth (6-1), at floating box type base plate (3) and the buoyancy tank of longitudinal interlude cofferdam (1-2) of joint cofferdam (1-1) longitudinally in each
Formula base plate (3) connects side and is provided with positioning tooth (6-1), and the positioning tooth (6-1) on two adjacent floating box type base plates (3) is mutually matched card
Connect, and locked by locking cylinder (6-2)；Described transverse joint section cofferdam (2-1), horizontal interlude cofferdam (2-2) and laterally
The floating box type baseplate width in rear cofferdam (2-3) is sequentially reduced, at transverse joint section cofferdam (2-1) and horizontal rear cofferdam (2-
3) the connection end with horizontal interlude cofferdam (2-2) is respectively equipped with positioning tooth (6-1), the two of horizontal interlude cofferdam (2-2)
Side is equipped with positioning tooth (6-1), arranges the horizontal interlude cofferdam (2-2) positioning tooth near transverse joint section cofferdam (2-1) side
(6-1) width is more than the width of the positioning tooth (6-1) near horizontal rear cofferdam (2-3) side, and on two adjacent transverse cofferdams
Positioning tooth (6-1) is mutually matched clamping, and is locked by locking cylinder (6-2).
A kind of steel cofferdam repaired for channel the most according to claim 1 and 2, it is characterised in that: enclose in described longitudinal direction
Weir (1) and transverse cofferdam (2) every section of cofferdam be provided with charge and discharge water fluid-control valve (13) and air compression valve (14).
A kind of steel cofferdam repaired for channel the most according to claim 1 and 2, it is characterised in that: connecing longitudinally in each
The floating box type base plate (3) on head circumference weir (1-1) is connected side and is provided with protrusion contiguous block (11) with transverse cofferdam (2), protrudes contiguous block
(11) bottom surface is inclined plane, and described groove (7) is opened on protrusion contiguous block (11), sets in the bottom surface protruding contiguous block (11)
There is the first sealing rubber pad (12)；Described transverse joint section cofferdam (2-1) is for being inverted L-type casing, and its laterally protruding part is formed
Connect inserted block (8), and identical with the size of groove (7), and the transverse joint section cofferdam (2-1) being inverted L-type casing is horizontal by it
Projection embeds in groove (7), and is provided with the second sealing rubber pad (12-1) at both joint face.
A kind of steel cofferdam repaired for channel the most according to claim 1 and 2, it is characterised in that: described longitudinal cofferdam
And the side that is connected with water fender (4) of the floating box type base plate (3) in every section of cofferdam of transverse cofferdam (2) is provided with connecting lateral plate (3-(1)
1), and the joint face of connecting lateral plate (3-1) and water fender (4) is low inside and high outside inclined plane, and water fender (4) be connected side
The 3rd sealing rubber pad (12-2) it is provided with between plate (3-1).
A kind of steel cofferdam repaired for channel the most according to claim 1 and 2, it is characterised in that: described transverse cofferdam
(1) transverse joint section cofferdam (2-1), one or more horizontal interlude cofferdam (2-2), horizontal rear cofferdam (2-3) splicing
Rear its water fender (4) forms into the angle end triangular baffle towards rear cofferdam, and the transverse joint of two transverse cofferdams
Seal between the water fender (4) in the water fender (4) of section cofferdam (2-1) and the landing edge cofferdam (1-1) of respective side and touch, and
Contact surface is provided with the 4th sealing rubber pad (12-3).
8. according to described in claim 2 a kind of for channel repair steel cofferdam, it is characterised in that: described longitudinal cofferdam (1) and
The water fender (4) of transverse cofferdam (2) is made up of front water fender (4-1), both sides water fender (4-2) and top board (4-3), described
Hydraulic control system (10) is placed on top board (4-3), and both sides water fender (4-2) is respectively by rotating shaft (5) and floating box type base plate (3)
Connecting, the middle position of floating box type base plate (3) is fixed in one end of hydraulic jack (9), and the other end is connected to front water fender (4-1)
Middle position.
9. according to described in claim 3 a kind of for channel repair steel cofferdam, it is characterised in that: described longitudinal cofferdam (1) and
Transverse cofferdam (2) is provided with the 5th sealing rubber pad (12-4) between two adjacent floating box type base plates (3)；At each floating box type base plate
(3) bottom surface is provided with the 6th sealing rubber pad (12-5).
10. according to a kind of steel cofferdam repaired for channel described in claim 4, it is characterised in that: described floating box type base plate (3)
In be separated into multiple cavity by dividing plate, and the top of multiple cavity is interconnected, the setting of described charge and discharge water fluid-control valve (13)
On the side cavity that floating box type base plate (3) is contrary with water fender (4).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553857.5A CN106193074B (en) | 2016-07-14 | 2016-07-14 | Steel cofferdam for channel reparation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610553857.5A CN106193074B (en) | 2016-07-14 | 2016-07-14 | Steel cofferdam for channel reparation |
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| CN106193074A true CN106193074A (en) | 2016-12-07 |
| CN106193074B CN106193074B (en) | 2018-01-30 |
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| CN107780423A (en) * | 2017-11-24 | 2018-03-09 | 河南水建集团有限公司 | Adjustable water cofferdam |
| CN108166515A (en) * | 2017-12-29 | 2018-06-15 | 华北水利水电大学 | A kind of waterpower self-stabilization type underwater construction cofferdam |
| CN108797616A (en) * | 2018-06-15 | 2018-11-13 | 华北水利水电大学 | The adjustable base assembling structure of steel cofferdam |
| CN108894239A (en) * | 2018-09-29 | 2018-11-27 | 华北水利水电大学 | The mobile cofferdam of whole walking |
| CN109083169A (en) * | 2018-09-15 | 2018-12-25 | 华北水利水电大学 | Tracks travel formula channel cofferdam |
| CN109403363A (en) * | 2018-12-14 | 2019-03-01 | 南水北调中线干线工程建设管理局 | A kind of self balance combined water-retaining cofferdam and its construction method |
| CN110424333A (en) * | 2019-08-12 | 2019-11-08 | 长江勘测规划设计研究有限责任公司 | Canal lining structure repairs cofferdam equipment and assembling method dryly under water delivery state |
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| CN111663499A (en) * | 2020-05-20 | 2020-09-15 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Cofferdam equipment applied to diversion canal and assembling method thereof |
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| 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 |
| CN114753389A (en) * | 2022-03-28 | 2022-07-15 | 南水北调(山东)机电维修有限责任公司 | Self-sinking combined steel cofferdam special for canal lining repair under deepwater condition |
| CN114941337A (en) * | 2022-05-25 | 2022-08-26 | 长江勘测规划设计研究有限责任公司 | Install convertible cofferdam board on cofferdam case and stagnant water structure thereof |
| CN115162384A (en) * | 2022-07-21 | 2022-10-11 | 河南省水利第一工程局 | Cofferdam structure for pump station forebay water-stop construction and water-stop construction method |
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| CN107780423A (en) * | 2017-11-24 | 2018-03-09 | 河南水建集团有限公司 | Adjustable water cofferdam |
| CN107780423B (en) * | 2017-11-24 | 2024-03-19 | 河南水建集团有限公司 | Adjustable water cofferdam |
| CN108166515A (en) * | 2017-12-29 | 2018-06-15 | 华北水利水电大学 | A kind of waterpower self-stabilization type underwater construction cofferdam |
| CN108797616A (en) * | 2018-06-15 | 2018-11-13 | 华北水利水电大学 | The adjustable base assembling structure of steel cofferdam |
| CN109083169B (en) * | 2018-09-15 | 2020-11-20 | 华北水利水电大学 | Rail sliding type channel cofferdam |
| CN109083169A (en) * | 2018-09-15 | 2018-12-25 | 华北水利水电大学 | Tracks travel formula channel cofferdam |
| CN108894239A (en) * | 2018-09-29 | 2018-11-27 | 华北水利水电大学 | The mobile cofferdam of whole walking |
| CN108894239B (en) * | 2018-09-29 | 2020-05-22 | 华北水利水电大学 | Integral walking type movable cofferdam |
| CN109403363A (en) * | 2018-12-14 | 2019-03-01 | 南水北调中线干线工程建设管理局 | A kind of self balance combined water-retaining cofferdam and its construction method |
| CN109403363B (en) * | 2018-12-14 | 2023-09-05 | 南水北调中线干线工程建设管理局 | Self-balancing combined water retaining cofferdam and construction method thereof |
| CN110424333A (en) * | 2019-08-12 | 2019-11-08 | 长江勘测规划设计研究有限责任公司 | Canal lining structure repairs cofferdam equipment and assembling method dryly under water delivery state |
| CN110424333B (en) * | 2019-08-12 | 2024-04-02 | 长江勘测规划设计研究有限责任公司 | Cofferdam repairing equipment and assembly method for canal lining structure in water delivery state |
| CN110565665A (en) * | 2019-09-18 | 2019-12-13 | 河南省水利勘测设计研究有限公司 | Construction method for repairing channel side slope without water cut based on canopy type cofferdam |
| CN110453706B (en) * | 2019-09-18 | 2024-06-04 | 河南省水利勘测设计研究有限公司 | Underwater awning type cofferdam for repairing side slope of channel |
| CN110453706A (en) * | 2019-09-18 | 2019-11-15 | 河南省水利勘测设计研究有限公司 | Underwater canopy cofferdam for channel side slopes reparation |
| CN111663499A (en) * | 2020-05-20 | 2020-09-15 | 中国船舶重工集团应急预警与救援装备股份有限公司 | Cofferdam equipment applied to diversion canal and assembling method thereof |
| CN111894215B (en) * | 2020-08-07 | 2022-07-08 | 张娜 | Sun-shading and rain-shielding device for underground garage |
| CN111894215A (en) * | 2020-08-07 | 2020-11-06 | 张娜 | Sun-shading and rain-shielding device for underground garage |
| 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 |
| CN114753389B (en) * | 2022-03-28 | 2023-11-28 | 南水北调(山东)机电维修有限责任公司 | Self-sinking type combined steel cofferdam special for repairing canal lining under deepwater condition |
| CN114753389A (en) * | 2022-03-28 | 2022-07-15 | 南水北调(山东)机电维修有限责任公司 | Self-sinking combined steel cofferdam special for canal lining repair under deepwater condition |
| CN114941337A (en) * | 2022-05-25 | 2022-08-26 | 长江勘测规划设计研究有限责任公司 | Install convertible cofferdam board on cofferdam case and stagnant water structure thereof |
| CN115162384B (en) * | 2022-07-21 | 2023-07-14 | 河南省水利第一工程局 | Non-water-cut construction cofferdam structure of pump station forebay and non-water-cut construction method |
| CN115162384A (en) * | 2022-07-21 | 2022-10-11 | 河南省水利第一工程局 | Cofferdam structure for pump station forebay water-stop construction and water-stop construction method |
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