CN107130620B - Channel steel cofferdam method for arranging with the flow-compensated function of section - Google Patents
Channel steel cofferdam method for arranging with the flow-compensated function of section Download PDFInfo
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- CN107130620B CN107130620B CN201710411939.0A CN201710411939A CN107130620B CN 107130620 B CN107130620 B CN 107130620B CN 201710411939 A CN201710411939 A CN 201710411939A CN 107130620 B CN107130620 B CN 107130620B
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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Abstract
The invention discloses a kind of channel steel cofferdam method for arranging with the flow-compensated function of section, one, production steel cofferdam: the weir body that the closure unit that steel cofferdam is by inverted U-shaped section and sealing linking is in inverted U-shaped section of lower end is constituted is constituted；Two, steel cofferdam is installed: laying steel sliding rail in the two lateral edge slope aspect of canal slope for needing to repair first, steel cofferdam is hung and is stood on steel sliding rail, after being slid in place by the positioning apparatus of inverted U-shaped weir body unit along steel sliding rail, it is fixedly mounted with to set by the sealing device of inverted U-shaped weir body unit, sink-float device and suction steel cofferdam sealing is adsorbed onto canal slope liner plate upper surface；Three, arrange flow-increasing device: flow-increasing device is made of steel truss, through-flow immersible pump, aqueduct, fixed device.The invention has the advantages that steel cofferdam simple, modularized design with structure, scene is rapidly assembled and disassembled.It is smaller to the water delivery flow effect of channel since the face of blocking water is small, and convenient for storage, transport and installation, it is very suitable for the water channel for having particular/special requirement to water delivery flow.
Description
Technical field
It the present invention relates to the use of steel cofferdam and implement dry construction restorative procedure, more particularly, to the flow-compensated function of section
The channel steel cofferdam method for arranging of energy.
Background technique
During channel hydraulic pipeline, concrete lining plate is it is possible that cracking, collapsing, the damage phenomenon such as anti-floating unstability.When
When liner plate is damaged, local head loss will be caused to increase to a certain extent, seepage prevention system destruction, slope is caused when serious
The softening of body soil leads to slope instability, influences the safe operation of channel.If levee slope liner plate occurs damaged and cutout is taken to arrange
It applies and is repaired, will seriously affect the domestic water and industrial water of town dweller along canal engineering.Therefore, it is necessary to a kind of special
With cofferdam, not only construction at dry land environment can be formed above and below in the canal slope water surface, damaged liner plate is repaired, but also answers
When having convenient transportation, be rapidly assembled and disassembled, while requiring cofferdam basal area smaller, the carrying capacity of channel is influenced it is smaller,
It realizes the target to supply water in repairing construction, but yet there are no all related reports.
Summary of the invention
It is an object of that present invention to provide a kind of channel steel cofferdam method for arranging with the flow-compensated function of section, reach both
Nonirrigated farmland working face can be formed under water again by meeting channel continuous water supply, convenient for open repairing construction.
To achieve the above object, the present invention takes following technical proposals:
Channel steel cofferdam method for arranging of the present invention with the flow-compensated function of section carries out as steps described below:
The first step, production steel cofferdam:
The weir that the closure unit that the steel cofferdam is by inverted U-shaped section and sealing linking is in the inverted U-shaped section of lower end is constituted
Body is constituted；Inverted U-shaped section passes sequentially through flange by the inverted U-shaped weir body unit of the identical more piece of structure and sealing ring seals against each other connection；
Between inverted U-shaped weir body unit and the contact surface of canal slope liner plate described in every section and unit and the canal bottom liner plate of blocking
It is provided with sealing device between contact surface, sink-float device, inhales to be fixedly mounted with and set and positioning apparatus；
Second step, installation steel cofferdam:
When steel cofferdam is installed, steel sliding rail is laid in the two lateral edge slope aspect of canal slope for needing to repair first, the steel cofferdam is hung
It stands on the steel sliding rail, through the positioning apparatus of inverted U-shaped weir body unit after the sliding in place of steel sliding rail, by inverted U-shaped
Sealing device, sink-float device and the suction of weir body unit, which are fixedly mounted with to set, is adsorbed onto canal slope liner plate upper surface for steel cofferdam sealing, completes
The installation of steel cofferdam forms nonirrigated farmland working face under water, to repair damaged liner plate；
Third step, arrangement flow-increasing device:
Flow-increasing device is made of steel truss, through-flow immersible pump, aqueduct, fixed device；The steel truss is arranged in steel
On the canal bottom liner plate of cofferdam upstream side, the through-flow immersible pump is fixed on the bottom of steel truss, the water inlet of through-flow immersible pump
It is arranged towards upstream side, the water outlet of through-flow immersible pump is connected to the aqueduct, and aqueduct bypasses steel cofferdam for water in a canal
Lead to steel cofferdam downstream side；The fixed device is the four tableland anchors strand for being arranged in channel two sides and being located at steel truss upstream and downstream side
Vehicle, every earth anchor winch pass through wirerope respectively and are fixedly connected with steel truss.
The roof and wall of the inverted U-shaped weir body unit and closure unit are the interlayer knot of inner plate body and outer plate body composition
Structure is fixedly connected between the inner plate body and outer plate body by spaced steel skeleton, between the adjacent steel skeleton
Interlayer in be respectively arranged with water tank；The sealing device by: along the inverted U-shaped weir body unit and block unit the wall
Outer plate body bottom edge outer rim setting the water seal of L shape and inner edge setting linear type water seal and along inverted U-shaped weir body unit and closure
The water-swellable waterstop of the bottom edge outer rim setting of the wall inner plate body of unit is constituted, and the horizontal edge of the L shape water seal extends vertical
Except the outer plate body of wall；The sink-float device is made of the water tank and the shut-off valve being arranged on each water tank side wall, each
The shut-off valve passes through a pipeline solenoid directional control valve corresponding with canal bank power station respectively and is connected, each electromagnetic switch
Valve is connected with centrifugal Self-priming sewage pump；It is described suction be fixedly mounted with set by: setting the inverted U-shaped weir body unit and block unit
The multiple vacuum chucks and vacuum chamber of interlayer bottom and the wall inner panel that inverted U-shaped weir body unit and closure unit are set
The vacuum pipe of the outer plate surface of body is constituted；Each vacuum chuck bleeding point is connected with the vacuum chamber, vacuum chamber
Be connected with the vacuum pipe, vacuum pipe occurred by vacuum, release solenoid valve and throttle valve and canal bank power station it is true
Slack tank is connected, and the vacuum tank bleeding point is connected by vacuum regulating valve with water-ring vacuum pump, is arranged on vacuum pipe
There is vacuum pressure switch, the control of solenoid valve occurs, discharges for the switching signal output end of the vacuum pressure switch and the vacuum
Signal input part connection processed；The positioning apparatus by: be arranged in the inverted U-shaped weir body unit and block unit interlayer bottom cunning
Block group and the bellows type air spring group being arranged in the sliding block group are constituted；The air inlet of the bellows type air spring group passes through height
Degree regulating valve, check valve and wire braided hose are connected with the air accumulator of canal bank power station, and the air accumulator air inlet passes through
Check valve, device for drying and filtering, shut-off valve are connected with air compressor machine gas outlet, are provided with displacement sensing in bellows type air spring group
The signal output end of device, institute's displacement sensors is connect with the control signal input of the height adjusting valve.
The wall height that inverted U-shaped section of the weir body is located at upstream face is greater than the wall height of back side；The upstream face
Wall, back side wall and the roof junction are arc transiting surface.
The invention has the advantages that the steel cofferdam has, structure is simple, modularized design, can at the scene Fast Installation and
Disassembly.It is smaller to the water delivery flow effect of channel since the face of blocking water is small, but also convenient for storage, transport and installation, it is very suitable to
In the water channel for having particular/special requirement to water delivery flow.Damaged canal can be quickly repaired using construction at dry land due to realizing not stop
Slope liner plate, therefore this steel cofferdam popularization and application foreground in water diversion project is wide.
Detailed description of the invention
Fig. 1 is facade arrangement schematic diagram of the invention.
Fig. 2 is plan view of the invention.
Fig. 3 is the structural schematic diagram (concealing fixed device) of flow-increasing device of the present invention.
Fig. 4 is the left view schematic diagram of Fig. 3.
Fig. 5 is the structural schematic diagram of inverted U-shaped weir body of the present invention.
Fig. 6 is the A-A of Fig. 5 to schematic cross-sectional view.
Fig. 7 is the portion the I enlarged structure schematic diagram of Fig. 6.
Fig. 8 is the portion the J enlarged structure schematic diagram of Fig. 5.
Fig. 9 is the B-B direction schematic cross-sectional view of Fig. 5.
Figure 10 is the portion the K enlarged structure schematic diagram of Fig. 9.
Figure 11 is the C-O-C of Fig. 5 to stagewise cutaway view structural schematic diagram.
Figure 12 is the portion the L enlarged structure schematic diagram of Figure 11.
Figure 13 is the control system block diagram of sink-float device of the present invention.
Figure 14 is that suction of the present invention is fixedly mounted with the control system block diagram set.
Figure 15 is the control system block diagram of positioning apparatus of the present invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, the present embodiment before being with technical solution of the present invention
It puts and is implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to down
State embodiment.
As shown in figures 1-15, the channel steel cofferdam method for arranging of the present invention with the flow-compensated function of section, according to
Following step carries out:
The first step, production steel cofferdam:
The weir that the closure unit 3 that the steel cofferdam is by inverted U-shaped section 2 and sealing linking is in inverted U-shaped section of 2 lower ends is constituted
Body；The wall height that inverted U-shaped section 2 of weir body is located at upstream face is greater than the wall height of back side；Upstream face wall, back side are vertical
Wall and roof junction are arc transiting surface；Flange 4 is passed sequentially through by the inverted U-shaped weir body unit of the identical more piece of structure inverted U-shaped section 2
Connection is sealed against each other with sealing ring；Between the inverted U-shaped weir body unit of every section and the contact surface of canal slope liner plate 1 and block unit 3
It is provided with sealing device between the contact surface of canal bottom liner plate, sink-float device, inhales to be fixedly mounted with and set and positioning apparatus；Inverted U-shaped weir
The sandwich that the roof and wall of body unit and closure unit 3 are made of inner plate body 5 and outer plate body 6, inner plate body 5 and outside plate
It is fixedly connected between body 6 by spaced I-shaped steel skeleton 7, in the interlayer between adjacent I-shaped steel skeleton 7 respectively
It is provided with water tank 8, each water tank 8 is respectively arranged with shut-off valve 8.1；Water tank 8 and shut-off valve 8.1 constitute sink-float device, each to cut
Only valve 8.1 is connected by a pipeline solenoid directional control valve corresponding with canal bank power station respectively, each solenoid directional control valve with
Centrifugal Self-priming sewage pump is connected (as shown in figure 13).
As shown in Fig. 2,5, sealing device by: along inverted U-shaped weir body unit and block unit wall outside plate body 6 bottom edge outside
The L shape water seal 9 of edge setting and the linear type water seal 10 of inner edge setting and the wall along inverted U-shaped weir body unit and closure unit
The water-swellable waterstop 11 of the bottom edge outer rim setting of inner plate body 5 is constituted, and the horizontal edge of L shape water seal 9 extends the outer plate body 6 of wall
Except.
As shown in Fig. 2,5,8,9,14, inhale be fixedly mounted with set by: inverted U-shaped weir body unit is set and blocks unit interlayer bottom
Vacuum chuck 12 and vacuum chamber 13 and inverted U-shaped weir body unit is set and blocks wall inner plate body 5 outer plate surface of unit
Vacuum pipe 14 is constituted, and 12 bleeding point of vacuum chuck is connected with vacuum chamber 13, and vacuum chamber 13 is connected with vacuum pipe 14
It is logical；Vacuum pipe 14 is occurred by vacuum, release solenoid valve and throttle valve are connected with the vacuum tank of canal bank power station, vacuum tank
Bleeding point is connected by vacuum regulating valve with water-ring vacuum pump, and vacuum pressure switch, vacuum are provided on vacuum pipe 14
The switching signal output end of pressure switch occurs with vacuum, the control signal input of release solenoid valve is connect.
As shown in Fig. 2,5,8,9,15, positioning apparatus by: inverted U-shaped weir body unit is set and blocks unit interlayer bottom
Sliding block group 15 and the bellows type air spring group 16 being arranged in sliding block group 15 are constituted, and the air inlet of bellows type air spring group 16 passes through
Inverted U-shaped weir body unit is set and blocks pump drainage tracheae 17, height adjusting valve, check valve and the braided steel wire glue in unit interlayer
Pipe is connected with the air accumulator of canal bank power station, and air accumulator air inlet passes through check valve, device for drying and filtering, shut-off valve and air compressor machine
Gas outlet is connected, and displacement sensor, the signal output end and height of displacement sensor are provided in bellows type air spring group 16
The control signal input of regulating valve connects.
Second step, installation steel cofferdam:
When steel cofferdam is installed, steel sliding rail is laid in the two sides Qu Po for needing to repair first, is positioned.Steel cofferdam is hung vertical
Onto steel sliding rail, after the sliding in place of sliding block group 15, controlling height adjusting valve by displacement sensor makes bellows type air spring
16 deflate, reduce bellows type air spring 16 height, by centrifugal Self-priming sewage pump, shut-off valve 8.1 and solenoid directional control valve to
Water-filling increases counterweight in water tank 8, so that steel cofferdam is sunk down into 1 upper surface of canal slope liner plate, steel sliding rail fully enters steel cofferdam cavity
After interior, occluded water inside starting water pump pump drainage steel cofferdam, then starting water-ring vacuum pump continuous air extraction inhales vacuum chuck 12
It is attached to 1 upper surface of canal slope liner plate, steel cofferdam installation is completed, forms nonirrigated farmland working face under water, to repair damaged lining cutting
Plate.
Third step, arrangement flow-increasing device:
As shown in Figure 1,2,3, 4, flow-increasing device is by steel truss 18, through-flow immersible pump 19, aqueduct 20, fixed device group
At；Steel truss 18 is arranged on the canal bottom liner plate of steel cofferdam upstream side, and through-flow immersible pump 19 is fixed on the bottom of steel truss 18,
The water inlet of through-flow immersible pump 19 is arranged towards upstream side, and the water outlet of through-flow immersible pump 19 is connected to aqueduct 20, water delivery
Water in a canal is led to steel cofferdam downstream side around steel cofferdam by pipeline 20；Fixed device is to be arranged in channel two sides to be located at steel truss 18
Four tableland anchor winches 21 of upstream and downstream side, every tableland anchor winch 21 are fixedly connected by wirerope 22 with steel truss 18 respectively.
When removing steel cofferdam, water-ring vacuum pump stops pumping, passes through centrifugal Self-priming sewage pump, shut-off valve 8.1 and electricity
Magnetic reversal valve is by the water in water tank 8 toward concora crush is discharged inside steel cofferdam, while inflation increases the buoyancy of steel cofferdam in water tank 8,
Sealing device is set to be detached from 1 upper surface of canal slope liner plate；Controlling to adjust valve by displacement sensor inflates bellows type air spring 16,
Steel sliding rail is detached from steel cofferdam, while slinging steel cofferdam to land, completes steel cofferdam and removes.
The working principle of steel cofferdam of the present invention is summarized as follows:
1, inverted U-shaped section 2 of weir body be located at upstream face wall height be greater than back side wall height, upstream face wall,
Back side wall and roof junction are arranged to arc transiting surface, to constitute the streamline shape of wedge shape and end, are conducive to subtract
Percussion of the weep to steel cofferdam；According to Hydrodynamics Theory, since the Shapes of object have directly through the water flow of object
Influence is connect, the body form of opposite water flow determines its resistance coefficient, therefore uses streamlined steel cofferdam shape, reaches reduction
The form drag of steel cofferdam improves steel cofferdam stability purpose.
2, it sealing antiseepage: is made of L shape water seal 9, linear type water seal 10, water-swellable waterstop 11, using multinomial technology
Measure antiseepage improves the reliability of steel cofferdam；The outer side elevation bottom of steel cofferdam (the bottom edge outer rim of the outer plate body 6 of wall) sets one of L
Shape water seal 9 compresses sealing by the water pressure of channel, and inside (the bottom edge inner edge of the outer plate body 6 of wall) sets one of linear type water seal
10, the possibility leak at the positions such as the honeycomb, pitted skin, faulting of slab ends on blocking concrete surface under steel cofferdam Gravitative Loads；Steel cofferdam is vertical
Face bottom inside (the water-swellable waterstop 11 of the bottom edge outer rim setting of wall inner plate body 5) is equipped with water-swellable waterstop 11,
Sealing is carried out using its excellent elasticity, extensibility and expansion water-stop performance.Expansion rate can in water for water-swellable waterstop 11
It adjusts, swelling volume keeps the elasticity and extensibility of rubber, and expansion rate by water quality impact, does not have adaptive temperature range wide, resistance to
Long function admirable, without harmful substance, without deep swollen precipitate, do not pollute the features such as water quality；Lead between every inverted U-shaped weir body unit of section
The connection of flange 4 is crossed, sets twice O-ring seal among flange 4 to meet internode sealing requirement.
3, the sink-float device that water tank 8 constitutes steel cofferdam is set in the interlayer between adjacent I-shaped steel skeleton 7；When steel encloses
After the sliding in place of weir, steel cofferdam is increased to 8 water-filling of water tank by centrifugal Self-priming sewage pump, shut-off valve 8.1 and solenoid directional control valve
Counterweight stablizes steel cofferdam on 1 surface of canal slope liner plate；When removing steel cofferdam, pass through centrifugal Self-priming sewage pump, shut-off valve
8.1 and solenoid directional control valve by the water in water tank 8 toward steel cofferdam internal drainage concora crush, while the inflation in the water tank 8 increases steel cofferdam
Buoyancy, make sealing device be detached from 1 surface of canal slope liner plate.
4, the vacuum chuck 12 and vacuum chamber for being fixedly mounted with and installing in inverted U-shaped weir body unit and block unit interlayer bottom are inhaled
13 and be arranged in inverted U-shaped weir body unit and block unit 5 outer plate surface of wall inner plate body vacuum pipe 14 constitute；It utilizes
Water-ring vacuum pump forms negative pressure by vacuum chuck 12, inhales steel cofferdam solid on 1 surface of canal slope liner plate, solves steel cofferdam steel
Fixation but the technical problem of the existing liner plate of channel cannot be destroyed.
5, positioning apparatus is made of sliding block group 15 and bellows type air spring group 16；Bellows type air spring group 16 passes through exhaust
Pipe 17, regulating valve, displacement sensor and air accumulator and drying, filter device are connected with air compressor machine, by bellows air bullet
Being filled and deflated by spring group 16 adjusts the height of bellows type air spring group 16.
6, steel cofferdam passes sequentially through flange 4 by the inverted U-shaped weir body unit of more piece and sealing ring seals against each other connection, not only realizes
The live quick-assembling of steel cofferdam and disassembly, and it is also convenient for the transport, maintenance and replacement of steel cofferdam；Inner plate body 5 and outer plate body 6
Between with standard I-steel 7 be keel, intensity is high, meets applying working condition intensity requirement, convenient for manufacture；It is equipped with not between I-steel 7
Become rusty reinforced plastic water container 8, increases steel cofferdam overall stiffness, meets and bears effect of water pressure.
Claims (3)
1. a kind of channel steel cofferdam method for arranging with the flow-compensated function of section, it is characterised in that: as steps described below into
Row:
The first step, production steel cofferdam:
The weir body structure that the closure unit that the steel cofferdam is by inverted U-shaped section and sealing linking is in the inverted U-shaped section of lower end is constituted
At；Inverted U-shaped section passes sequentially through flange by the inverted U-shaped weir body unit of the identical more piece of structure and sealing ring seals against each other connection；Every section
Between the inverted U-shaped weir body unit and the contact surface of canal slope liner plate and it is described block unit and canal bottom liner plate contact
It is provided with sealing device between face, sink-float device, inhales to be fixedly mounted with and set and positioning apparatus；
Second step, installation steel cofferdam:
When steel cofferdam is installed, steel sliding rail is laid in the two lateral edge slope aspect of canal slope for needing to repair first, the steel cofferdam is hung and is stood
On the steel sliding rail, through the positioning apparatus of inverted U-shaped weir body unit after the sliding in place of steel sliding rail, pass through inverted U-shaped weir body
Sealing device, sink-float device and the suction of unit, which are fixedly mounted with to set, is adsorbed onto canal slope liner plate upper surface for steel cofferdam sealing, completes steel and encloses
The installation on weir forms nonirrigated farmland working face under water, to repair damaged liner plate；
Third step, arrangement flow-increasing device:
Flow-increasing device is made of steel truss, through-flow immersible pump, aqueduct, fixed device；The steel truss is arranged in steel cofferdam
On the canal bottom liner plate of upstream side, the through-flow immersible pump is fixed on the bottom of steel truss, the water inlet of through-flow immersible pump towards
Upstream side setting, the water outlet of through-flow immersible pump are connected to the aqueduct, and aqueduct leads to water in a canal around steel cofferdam
Steel cofferdam downstream side；The fixed device is the four tableland anchor winches for being arranged in channel two sides and being located at steel truss upstream and downstream side, often
Earth anchor winch described in platform passes through wirerope respectively and is fixedly connected with steel truss.
2. according to claim 1 with the channel steel cofferdam method for arranging of the flow-compensated function of section, it is characterised in that: institute
The roof and wall of stating inverted U-shaped weir body unit and closure unit are the sandwich of inner plate body and outer plate body composition, described interior
It is fixedly connected between plate body and outer plate body by spaced steel skeleton, is divided in the interlayer between the adjacent steel skeleton
Water tank is not provided with it；The sealing device by: along the inverted U-shaped weir body unit and block unit the wall outside plate body bottom
The L shape water seal of side outer rim setting and the linear type water seal of inner edge setting and the wall along inverted U-shaped weir body unit and closure unit
The water-swellable waterstop of the bottom edge outer rim setting of inner plate body is constituted, and the horizontal edge of the L shape water seal extends the outer plate body of wall
Except；The sink-float device is made of the water tank and the shut-off valve being arranged on each water tank side wall, each shut-off valve
Be connected respectively by a pipeline solenoid directional control valve corresponding with canal bank power station, each solenoid directional control valve with centrifugation
Formula Self-priming sewage pump is connected；The suction be fixedly mounted with set by: the inverted U-shaped weir body unit is set and blocks unit interlayer bottom
Multiple vacuum chucks and vacuum chamber and be arranged in inverted U-shaped weir body unit and block unit wall inner plate body outer plate surface
Vacuum pipe constitute；Each vacuum chuck bleeding point is connected with the vacuum chamber, vacuum chamber and the vacuum
Pipeline is connected, and vacuum pipe is occurred by vacuum, release solenoid valve and throttle valve are connected with the vacuum tank of canal bank power station,
The vacuum tank bleeding point is connected by vacuum regulating valve with water-ring vacuum pump, and vacuum pressure is provided on vacuum pipe and is opened
It closes, the control signal input of the switching signal output end of the vacuum pressure switch and vacuum generation, release solenoid valve
Connection；The positioning apparatus by: be arranged in the inverted U-shaped weir body unit and block unit interlayer bottom sliding block group and setting exist
Bellows type air spring group in the sliding block group is constituted；The air inlet of the bellows type air spring group passes through height adjusting valve, list
It is connected to valve and wire braided hose with the air accumulator of canal bank power station, the air accumulator air inlet passes through check valve, drying
Filter, shut-off valve are connected with air compressor machine gas outlet, and displacement sensor is provided in bellows type air spring group, and the displacement passes
The signal output end of sensor is connect with the control signal input of the height adjusting valve.
3. according to claim 2 with the channel steel cofferdam method for arranging of the flow-compensated function of section, it is characterised in that: institute
The inverted U-shaped section of wall height for being located at upstream face for stating weir body is greater than the wall height of back side；The upstream face wall, back side
Wall and the roof junction are arc transiting surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710411939.0A CN107130620B (en) | 2017-06-05 | 2017-06-05 | Channel steel cofferdam method for arranging with the flow-compensated function of section |
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| CN201710411939.0A CN107130620B (en) | 2017-06-05 | 2017-06-05 | Channel steel cofferdam method for arranging with the flow-compensated function of section |
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| CN107130620B true CN107130620B (en) | 2019-01-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109778882B (en) * | 2019-01-30 | 2021-01-01 | 华北水利水电大学 | Closed system channel steel cofferdam assembled at inclination angle |
| 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 |
| CN113481821B (en) * | 2021-07-27 | 2022-08-09 | 武大巨成结构股份有限公司 | Overhaul device and method for inner bottom surface of aqueduct |
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| KR20060118302A (en) * | 2005-05-16 | 2006-11-23 | (주)아이엔 | Method for repairing cracks of waterway concrete structure |
| CN104790417A (en) * | 2015-04-17 | 2015-07-22 | 中水北方勘测设计研究有限责任公司 | Spliced chamber cofferdam for repair of canal lining projects |
| CN204551504U (en) * | 2015-04-17 | 2015-08-12 | 中水北方勘测设计研究有限责任公司 | A kind of cofferdam of partly diving under water of repairing for channel side slopes lining project |
| CN205742235U (en) * | 2016-07-14 | 2016-11-30 | 长江勘测规划设计研究有限责任公司 | The steel cofferdam repaired for channel |
| CN106381842A (en) * | 2016-10-20 | 2017-02-08 | 长江勘测规划设计研究有限责任公司 | Canal lining repair buried pipe water transfer and cofferdam intercepted foundation pit and method |
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| CN107130620A (en) | 2017-09-05 |
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