CN111456048A - Underwater operation construction method for channel defect treatment - Google Patents
Underwater operation construction method for channel defect treatment Download PDFInfo
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- CN111456048A CN111456048A CN202010308445.1A CN202010308445A CN111456048A CN 111456048 A CN111456048 A CN 111456048A CN 202010308445 A CN202010308445 A CN 202010308445A CN 111456048 A CN111456048 A CN 111456048A
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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
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- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/02—Caissons able to be floated on water and to be lowered into water in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
- E02D23/10—Caissons filled with compressed air
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
- E02D2250/0084—Production methods for working underwater using pneumatical means
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The invention discloses a construction method for underwater operation for treating channel defects, which comprises a steel caisson for treating channel concrete defects, wherein the construction process for treating the channel defects comprises the following steps: step one, placing a steel caisson in place; step two, sinking a steel caisson; step three, primarily sealing the bottom of the steel caisson; step four, deeply sealing the bottom of the steel caisson; fifthly, sealing inspection and slope repair are carried out on the bottom of the steel caisson; and step six, removing the steel caisson. The invention reduces the construction difficulty of channel defect treatment, is favorable for improving the construction efficiency, and can play a good water-stopping and sealing effect under the condition of larger unevenness of the channel side slope lining panel, thereby providing proper operating conditions for channel defect treatment.
Description
Technical Field
The invention relates to the technical field of water delivery channel slope restoration, in particular to a channel defect treatment underwater operation construction method.
Background
Generally, an engineering lining plate paved on the slope surface of a main canal (such as a main canal for north-south water diversion) of a large-scale water delivery channel is thin, and a heat insulation plate with relatively large deformation is positioned at the lower layer of the lining plate, so that various situations that the side slope is damaged and needs to be repaired inevitably occur after the engineering lining plate runs for a certain time. For the main canals running by single lines, the main canals do not have the condition of water cut-off and maintenance, and have strict requirements on water surface lines and water cross sections during running. The quality defect of the part above the water surface of the canal side slope lining plate is generally easy to process, however, the quality defect of the part below the water surface of the side slope lining plate is difficult to process, and the existing device for repairing the side slope lining plate below the water surface is complex in structure, large in construction difficulty and low in construction efficiency. Therefore, it is a technical problem to overcome how to simply and quickly process the quality defect of the channel under the condition of channel water passing.
Disclosure of Invention
The invention provides a construction method for underwater operation for treating channel defects, which solves the defects of the prior art, has the advantages of low construction difficulty and high construction efficiency, and can play a good water-stopping and sealing effect under the condition that the unevenness of a lining panel of a channel side slope is large, thereby providing proper operation conditions for treating the channel defects.
In order to achieve the purpose, the invention provides the following technical scheme:
a channel defect treatment underwater operation construction method comprises a steel caisson for channel concrete defect treatment, wherein the steel caisson comprises a box body consisting of a back plate and two side plates which are arranged in parallel, a cross beam is arranged between the two side plates, and two lifting rings are arranged on the cross beam; the box body is provided with a water pump and a plurality of buoyancy tanks, and each buoyancy tank is provided with a water inlet and outlet and an air inlet and outlet; the bottom parts of the back plate and the side plate are provided with mounting grooves, a water inlet and drainage main pipe and a gas inlet and exhaust main pipe are arranged on the mounting grooves, and a valve is arranged on the water inlet and drainage main pipe; the water inlet and outlet on each buoyancy tank is connected with a water inlet and outlet main pipe, and the air inlet and outlet on each buoyancy tank is connected with an air inlet and outlet main pipe; a water charging belt, a water stop and a sealing belt are arranged in the mounting groove, the sealing belt is embedded into the bottom of the water stop, the water stop is arranged below the water charging belt, and the sealing belt is extruded out from the lower side of the water stop after the water charging belt is charged with water;
the construction steps for treating the channel defects are as follows:
firstly, tying steel wire ropes for hoisting on two hoisting rings, hoisting a steel caisson into a side slope lining panel to be treated of a channel by using a crane, and floating the steel caisson in water due to buoyancy of the buoyancy tank;
step two, the water inlet and outlet main pipe is connected with the water outlet end of the water pump through a pipeline, a valve on the water inlet and outlet main pipe is opened, the water pump extracts canal water and fills the water into the floating box, so that the steel caisson slowly sinks and is attached to and pressed on the side slope lining panel;
step three, continuously filling water into each buoyancy tank, increasing the weight of the steel caisson on the water stop belt, pressing the water stop belt on the side slope lining panel and tightly attaching the water stop belt to the side slope lining panel, and achieving primary sealing;
filling water into the water filling belt by using a manual water pressing pump, increasing the volume of the water filling belt after the water filling belt is filled with water, extruding a sealing belt from the lower part of the water stopping belt, and tightly pressing the sealing belt on the side slope lining panel to realize deep sealing;
step five, closing a valve on the water inlet and outlet main pipe, placing the water inlet end of a water pump into the area surrounded by the steel caisson, placing the water outlet end of the water pump into a channel, pumping water in the area surrounded by the steel caisson to a river channel by using the water pump, checking whether leakage exists at the bottom of the steel caisson, repeating the step three and the step four if leakage does not exist, and draining accumulated water in the area surrounded by the steel caisson and performing slope defect repairing operation if no leakage exists;
and step six, after the slope is repaired, discharging water in the water filling belt and the buoyancy tank, enabling the steel caisson to float to the water surface again, and hoisting the steel caisson back to the channel bank by using a crane.
Furthermore, a traction ring is arranged at one end, away from the back plate, of the mounting groove at the bottom of the side plate, and a cable is tied on the traction ring; in the first step and the second step, workers pull cables on the ditch bank to adjust the posture of the steel caisson, and the positioning of the steel caisson is achieved.
Furthermore, the floating boxes are cuboids, each floating box is provided with a water inlet and outlet and an air inlet and outlet, the water inlet and outlet and the air inlet and outlet are respectively arranged on two parallel surfaces of the floating box, and the water inlet and outlet and the air inlet and outlet are both arranged at the geometric center of the plane where the water inlet and outlet and the air inlet and outlet are arranged; and in the sixth step, the water in the buoyancy tank is discharged in a process that a valve on the water inlet and drain main pipe is opened, the air inlet and exhaust main pipe is connected with an air compressor, the air compressor is used for inflating the buoyancy tank, compressed air enters the buoyancy tank from the air inlet and outlet, and water in the buoyancy tank is pressed out from the water inlet and drain port and is drained to the channel from the water inlet and drain main pipe.
Furthermore, the floating box comprises a first floating box arranged on the outer side surface of the left side plate, a second floating box arranged on the outer side surface of the back plate, a third floating box arranged on the outer side surface of the right side plate and a fourth floating box arranged on the inner side surface of the back plate; the second floating box and the fourth floating box are both parallel to the mounting groove at the bottom of the back plate; the first buoyancy tank and the third buoyancy tank are obliquely arranged relative to the mounting groove at the bottom of the side plate.
Furthermore, the mounting groove comprises a first groove plate and a second groove plate, the upper ends of the first groove plate and the second groove plate are connected in a sealing mode, partition plates and buckling parts are arranged on the first groove plate and the second groove plate respectively, a cavity for mounting the water filling belt is formed above the two partition plates after the first groove plate and the second groove plate are fixed, and the water filling belt is arranged in the cavity; a movable plate is arranged between the water charging belt and the partition plate; clamping grooves are formed in two sides of the water stop, a notch is formed in the bottom of the water stop, and a through hole communicated with the notch is formed in the upper end face of the water stop; the upper end of the water stop is clamped between the partition plate and the buckling part, and the buckling part is embedded into the clamping groove; an extrusion rod is arranged in the notch, and a plurality of connecting columns are arranged on the extrusion rod at intervals; the connecting column is inserted into the through hole, and the upper end of the connecting column is fixed with the movable plate; the connecting column is sleeved with a spring, the upper end of the spring is in contact with the movable plate, and the lower end of the spring is in contact with the upper end face of the water stop belt; the sealing band is disposed within the notch and secured to the squeeze bar.
Furthermore, the bottom surface of the water stop is provided with a plurality of grooves along the length direction of the water stop; the bottom of waterstop is provided with the rectangle cavity, and the height of rectangle cavity is less than the height of draw-in groove.
Furthermore, the upper end of the water stop is provided with a reinforcing plate, and the height of the reinforcing plate is higher than that of the clamping groove.
Further, the sealing strip comprises a rectangular sleeve, a core plate, a connecting part and a pipe clamp which are integrally formed; the core plate is arranged inside the rectangular sleeve, the upper end of the core plate is connected with the upper end of the rectangular sleeve, and a gap is formed between the lower end of the core plate and the bottom of the rectangular sleeve; the connecting parts are arranged on two sides of the core plate symmetrically, one end of each connecting part is connected with the core plate, the other end of each connecting part is connected with the rectangular sleeve, and the connecting parts are all inclined downwards; the pipe clamps are arranged at the upper end of the sealing belt at intervals and are buckled with the extrusion rod.
Furthermore, the tops of the first groove plate and the second groove plate are fixed through upper bolts, and the joint surface of the first groove plate and the second groove plate is coated with sealant; the second groove plate is provided with a threaded hole, the first groove plate is provided with a bolt hole corresponding to the threaded hole, a lower bolt is inserted into the bolt hole and screwed into the corresponding threaded hole, and a sealing washer is arranged between the lower bolt and the first groove plate.
Further, the one end that the backplate was kept away from to the mounting groove of curb plate bottom is provided with the gyro wheel, and the height that highly is less than the mounting groove lower extreme and is higher than the height of waterstop lower extreme of gyro wheel minimum, and the one side that the backplate was kept away from to the gyro wheel stretches out in the mounting groove.
Compared with the prior art, the invention can adapt to larger unevenness of the channel side slope lining panel, has better water-stopping and sealing effects, and provides proper operating conditions for defect treatment of the channel side slope lining panel; in addition, the steel caisson is simple in placement and removal and bottom sealing, construction difficulty in channel defect treatment is reduced, and construction efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a steel caisson of the invention;
FIG. 2 is a left side view of the steel caisson of the present invention;
FIG. 3 is a right side view of the steel caisson of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 5 is an internal structural view of a mounting groove in the present invention;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
FIG. 7 is a cross-sectional view of a mounting groove of the present invention;
FIG. 8 is a cross-sectional view of a water stop of the present invention;
FIG. 9 is a cross-sectional view of the sealing tape of the present invention;
FIG. 10 is a left side view of FIG. 9;
fig. 11 is a schematic view of a steel caisson when placed on a channel side slope (dashed line 20 in the figure indicates the horizontal plane).
The reference numerals are explained below:
in the figure: 1. a side plate; 2. a back plate; 3. mounting grooves; 301. a first slot plate; 302. a second slot plate; 4. a water stop; 401. a card slot; 402. a rectangular cavity; 403. a groove; 404. a notch; 405. a reinforcing plate; 406. a through hole; 5. a first buoyancy tank; 6. a second buoyancy tank; 7. a third buoyancy tank; 8. a fourth buoyancy tank; 9. side slope; 10. a cross beam; 11. a hoisting ring; 12. a water pump; 13. an intake and exhaust manifold; 14. a water inlet and outlet header pipe; 15. a valve; 16. a roller; 17. a traction ring; 18. an air inlet and outlet; 19. a water inlet and outlet; 20. water line; 21. screwing a bolt; 22. filling a water belt; 23. a movable plate; 24. a sealing gasket; 25. a lower bolt; 26. connecting columns; 27. a spring; 28. an extrusion stem; 29. sealing tape; 2901. a rectangular sleeve; 2902. a connecting portion; 2903. a core board; 2904. a pipe clamp; 30. a threaded hole; 31. a chamber; 32. a fastening part; 33. a separator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Referring to fig. 1-11, the invention provides a channel defect treatment underwater operation construction method, which comprises a steel caisson for channel concrete defect treatment, wherein the steel caisson comprises a box body consisting of a back plate 2 and two side plates 1 arranged in parallel, a cross beam 10 is arranged between the two side plates 1, and two lifting rings 11 are arranged on the cross beam 10; the box body is provided with a water pump 12 and a plurality of buoyancy tanks, and each buoyancy tank is provided with a water inlet and outlet 19 and an air inlet and outlet 18; the bottom parts of the back plate 2 and the side plate 1 are both provided with mounting grooves 3, the mounting grooves 3 are provided with a water inlet and drainage main pipe 14 and a water inlet and drainage main pipe 13, and the water inlet and drainage main pipe 14 is provided with a valve 15; the water inlet and outlet 19 on each buoyancy tank is connected with the water inlet and outlet main pipe 14, and the air inlet and outlet 18 on each buoyancy tank is connected with the air inlet and outlet main pipe 13; the water filling belt 22, the water stop belt 4 and the sealing belt 29 are arranged in the mounting groove 3, the sealing belt 29 is embedded into the bottom of the water stop belt 4, the water stop belt 4 is arranged below the water filling belt 29, and the sealing belt 29 is extruded out from the lower side of the water stop belt 4 after the water filling belt 22 is filled with water.
The construction steps for treating the channel defects are as follows:
step one, placing a steel caisson in place: steel wire ropes for hoisting are tied on the two hoisting rings 11, a steel caisson is hoisted by a crane to be placed on a side slope 9 lining panel to be treated of the channel, and the steel caisson floats in water due to buoyancy of the buoyancy tank;
step two, sinking the steel caisson: the water inlet and outlet main pipe 14 is connected with the water outlet end of the water pump 12 through a pipeline, a valve 15 on the water inlet and outlet main pipe 14 is opened, the water pump 12 pumps canal water and fills the buoyancy tank, so that the steel caisson slowly sinks and is attached to and pressed on the lining panel of the side slope 9;
step three, primarily sealing the bottom of the steel caisson: continuously filling water into each buoyancy tank, increasing the weight of the steel caisson on the water stop 4, pressing the water stop 4 on the side slope lining panel and tightly attaching the water stop 4 to the side slope lining panel to realize primary sealing;
step four, deeply sealing the bottom of the steel caisson: a manual water pump is used for filling water into the water filling belt 22, the volume of the water filling belt 22 is increased after the water filling belt 22 is filled with water, the sealing belt 29 is extruded out from the lower part of the water stop belt 4, and the sealing belt 29 is tightly pressed on the lining panel of the side slope 9 to realize deep sealing;
step five, steel caisson bottom sealing inspection and slope repair: closing a valve 15 on a water inlet and outlet main pipe 14, placing a water inlet end of a water pump 12 into an area surrounded by the steel caisson, placing a water outlet end of the water pump 12 into a channel, pumping water in the area surrounded by the steel caisson to a river channel by using the water pump 12, checking whether leakage exists at the bottom of the steel caisson, repeating the third step and the fourth step if leakage does not exist, draining accumulated water in the area surrounded by the steel caisson and performing slope defect repairing operation if no leakage exists;
step six, removing the steel caisson: after the slope 9 is repaired, the water in the water filling belt 22 and the buoyancy tank is discharged, the steel caisson floats to the water surface again, and the steel caisson is hoisted back to the channel bank by a crane.
In the invention, one end of the mounting groove 3 at the bottom of the side plate 1, which is far away from the back plate 2, is provided with a traction ring 17, and a cable is tied on the traction ring 17; when the first step and the second step are implemented, workers can pull the cable on the ditch bank to adjust the posture of the steel caisson, so that the accurate positioning of the steel caisson is realized.
As a preferred embodiment, the buoyancy tanks are rectangular solids, each buoyancy tank is provided with a water inlet and outlet 19 and an air inlet and outlet 18, the water inlet and outlet 19 and the air inlet and outlet 18 are respectively arranged on two parallel surfaces of the buoyancy tank, and the water inlet and outlet 19 and the air inlet and outlet 18 are both arranged at the geometric center of the plane on which the buoyancy tank is arranged; and in the sixth step, the water in the buoyancy tank is discharged in a process that a valve 15 on the water inlet and outlet main pipe 14 is opened, the air inlet and outlet main pipe 13 is connected with an air compressor on the ditch bank, the buoyancy tank is inflated by the air compressor, compressed air enters the buoyancy tank from the air inlet and outlet 18, and the water in the buoyancy tank is pressed out from the water inlet and outlet 19 and is discharged to the channel from the water inlet and outlet main pipe 14.
In the invention, the buoyancy tank comprises a first buoyancy tank 5 arranged on the outer side surface of the left side plate 1, a second buoyancy tank 6 arranged on the outer side surface of the back plate 2, a third buoyancy tank 7 arranged on the outer side surface of the right side plate 1 and a fourth buoyancy tank 8 arranged on the inner side surface of the back plate 2; the second floating box 6 and the fourth floating box 8 are both parallel to the mounting groove 3 at the bottom of the back plate 2; the first buoyancy tank 5 and the third buoyancy tank 7 are obliquely arranged relative to the mounting groove 3 at the bottom of the side plate 1, and the included angle between the first buoyancy tank 5 and the mounting groove 3 at the bottom of the side plate 1 and the included angle between the third buoyancy tank 7 and the mounting groove 3 at the bottom of the side plate 1 are the same as the inclination angle of a side slope 9 to be repaired. Referring to fig. 11, when the steel caisson is placed on a side slope 9, the water stop 4 at the bottom of the steel caisson is in close contact with the side slope 9, and the first buoyancy tank 5 and the third buoyancy tank 7 are horizontal.
In the invention, the mounting groove 3 comprises a first groove plate 301 and a second groove plate 302, the upper ends of the first groove plate 301 and the second groove plate 302 are hermetically connected, the first groove plate 301 and the second groove plate 302 are both provided with a partition plate 33 and a buckling part 32 which are integrally formed with the first groove plate 301 and the second groove plate 302, a chamber 31 for mounting the water-filled hose 22 is formed above the two partition plates 33 after the first groove plate 301 and the second groove plate 302 are fixed, and the water-filled hose 22 is arranged in the chamber 31; a movable plate 23 is arranged between the water charging belt 22 and the partition plate 33; clamping grooves 401 are formed in two sides of the water stop 4, a notch 404 is formed in the bottom of the water stop 4, and a through hole 406 communicated with the notch 404 is formed in the upper end face of the water stop 4; the upper end of the water stop 4 is clamped between the partition plate 33 and the buckling part 32, and the buckling part 32 is embedded into the clamping groove 401; the notch 404 is internally provided with a squeezing rod 28, and a plurality of connecting columns 26 are arranged on the squeezing rod 28 at intervals; the connecting column 26 is inserted into the through hole 406, and the upper end thereof is fixed with the movable plate 23; the connecting column 26 is sleeved with a spring 27, the upper end of the spring 27 is in contact with the movable plate 23, and the lower end of the spring 27 is in contact with the upper end face of the water stop 4; the sealing band 29 is disposed within the slot 404 and is secured to the squeeze bar 28.
In the invention, the water stop 4 is made of rubber, the bottom surface of the water stop 4 is provided with a plurality of grooves 403 along the length direction of the water stop 4, and the sealing capability of the lower end of the water stop 4 can be further improved by arranging the grooves 403. A rectangular cavity 402 is formed in the bottom of the water stop 4, the height of the rectangular cavity 402 is lower than that of the clamping groove 401, and the rectangular cavity 402 can improve the deformation capacity of the lower end of the water stop 4; when the unevenness of the side slope lining panel is small, the lower end of the water stop 4 is extruded and deformed to realize good sealing, namely, the expected sealing effect can be achieved after the preliminary sealing in the third step, and the deep sealing in the fourth step is not needed. When the unevenness of the side slope lining panel is large and water still leaks from the bottom of the box body 2 after the preliminary sealing in the third step, the deep sealing can be performed through the fourth step.
In the invention, in order to increase the structural strength of the fixed part of the water stop 4 and prevent the upper end of the water stop 4 from excessively deforming, the upper end of the water stop 4 is provided with a steel reinforcing plate 405, and the height of the reinforcing plate 405 is higher than that of the clamping groove 401.
In the present invention, the sealing tape 29 is made of rubber, and includes an integrally formed rectangular sleeve 2901, a core plate 2903, a connecting portion 2902 and a pipe clamp 2903; the core plate 2903 is arranged inside the rectangular sleeve 2901, the upper end of the core plate 2903 is connected with the upper end of the rectangular sleeve 2901, and a gap is reserved between the lower end of the core plate 2903 and the bottom of the rectangular sleeve 2901; the connecting portions 2902 are provided in plurality and symmetrically disposed at both sides of the core plate 2903, one end of the connecting portion 2902 is connected to the core plate 2903, and the other end thereof is connected to the rectangular sleeve 2901, and the connecting portions 2902 are all inclined downward at an angle of 45 degrees; the pipe clamps 2904 are arranged at intervals at the upper end of the sealing tape 29, and the pipe clamps 2904 are buckled with the extrusion rod 28.
The principle of realizing deep sealing in the fourth step of the invention is as follows: the water filling belt 22 is filled with water, the volume of the water filling belt 22 is increased, the movable plate 23 and the extrusion rod 28 are further pushed to move downwards, the spring 27 is compressed, the sealing belt 29 is extruded on the concrete surface of the channel side slope 9 under the pushing of the extrusion rod 28, and the bottom of the sealing belt 29 is greatly deformed due to extrusion, so that the sealing belt 29 can fill a large gap between the sealing belt and the lining panel of the side slope 9 under the condition that the unevenness of the surface of the lining panel of the side slope is large, and good sealing is realized. Further, the connection portion 2902 causes both side walls of the rectangular sleeve 2901 to be tightly pressed against the inner wall of the notch 404, achieving sealing between the rectangular sleeve 2901 and the notch 404.
In the invention, the tops of the first slot plate 301 and the second slot plate 302 are fixed by the upper bolt 21, and the joint surface of the first slot plate 301 and the second slot plate 302 is coated with sealant; the second groove plate 302 is provided with a threaded hole 30, the first groove plate 301 is provided with a bolt hole corresponding to the threaded hole 30, a lower bolt 25 is inserted into the bolt hole and the lower bolt 25 is screwed into the corresponding threaded hole 30, and a sealing gasket 24 is arranged between the lower bolt 25 and the first groove plate 301. The water stop 4 between the first trough plate 301 and the second trough plate 302 can be clamped more tightly by the lower bolt 25, and the leakage at the joint of the first trough plate 301 or the second trough plate 302 and the water stop 4 can be prevented.
In the invention, a roller 16 is arranged at one end of the mounting groove 3 at the bottom of the side plate 1, which is far away from the back plate 2, the height of the lowest point of the roller 16 is lower than the height of the lower end of the mounting groove 3 and higher than the height of the lower end of the water stop 4, and one side of the roller 16, which is far away from the back plate 2, extends out of the mounting groove 3. When the steel caisson is hoisted to the channel side slope 9, one end of the mounting groove 3, which is far away from the back plate 2, is firstly contacted with the channel side slope 9, and when the steel caisson is hoisted away from the channel side slope 9, one end of the mounting groove 3, which is far away from the back plate 2, is finally separated from the channel side slope 9, and the rolling contact of the mounting groove 3 and the channel side slope 9 can be realized through the arranged roller 16, so that the lining panel of the channel side slope 9 is prevented from being damaged due to the sliding of the mounting groove 3 on the channel side slope 9 during hoisting or hoisting, and the operation difficulty of the steel caisson during hoisting or hoisting is reduced; in addition, the arranged roller 16 can also prevent one end of the water stop 4 far away from the back plate 2 from being excessively extruded when the water stop is hung or lifted away, and the service life of the water stop 4 is prolonged.
The invention can adapt to larger unevenness of the lining panel of the channel side slope 9, has better water-stopping and sealing effects, and provides proper operating conditions for defect treatment of the lining panel of the channel side slope 9. Meanwhile, the steel caisson is simple in placement and removal and bottom sealing processes, construction difficulty in channel defect treatment is reduced, and construction efficiency is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A channel defect treatment underwater operation construction method comprises a steel caisson for channel concrete defect treatment, and is characterized in that the steel caisson comprises a box body consisting of a back plate and two side plates arranged in parallel, a cross beam is arranged between the two side plates, and two lifting rings are arranged on the cross beam; the box body is provided with a water pump and a plurality of buoyancy tanks, and each buoyancy tank is provided with a water inlet and outlet and an air inlet and outlet; the bottom parts of the back plate and the side plate are provided with mounting grooves, a water inlet and drainage main pipe and a gas inlet and exhaust main pipe are arranged on the mounting grooves, and a valve is arranged on the water inlet and drainage main pipe; the water inlet and outlet on each buoyancy tank is connected with a water inlet and outlet main pipe, and the air inlet and outlet on each buoyancy tank is connected with an air inlet and outlet main pipe; a water charging belt, a water stop and a sealing belt are arranged in the mounting groove, the sealing belt is embedded into the bottom of the water stop, the water stop is arranged below the water charging belt, and the sealing belt is extruded out from the lower side of the water stop after the water charging belt is charged with water;
the construction steps for treating the channel defects are as follows:
firstly, tying steel wire ropes for hoisting on two hoisting rings, hoisting a steel caisson into a side slope lining panel to be treated of a channel by using a crane, and floating the steel caisson in water due to buoyancy of the buoyancy tank;
step two, the water inlet and outlet main pipe is connected with the water outlet end of the water pump through a pipeline, a valve on the water inlet and outlet main pipe is opened, the water pump extracts canal water and fills the water into the floating box, so that the steel caisson slowly sinks and is attached to and pressed on the side slope lining panel;
step three, continuously filling water into each buoyancy tank, increasing the weight of the steel caisson on the water stop belt, pressing the water stop belt on the side slope lining panel and tightly attaching the water stop belt to the side slope lining panel, and achieving primary sealing;
filling water into the water filling belt by using a manual water pressing pump, increasing the volume of the water filling belt after the water filling belt is filled with water, extruding a sealing belt from the lower part of the water stopping belt, and tightly pressing the sealing belt on the side slope lining panel to realize deep sealing;
step five, closing a valve on the water inlet and outlet main pipe, placing the water inlet end of a water pump into the area surrounded by the steel caisson, placing the water outlet end of the water pump into a channel, pumping water in the area surrounded by the steel caisson to a river channel by using the water pump, checking whether leakage exists at the bottom of the steel caisson, repeating the step three and the step four if leakage does not exist, and draining accumulated water in the area surrounded by the steel caisson and performing slope defect repairing operation if no leakage exists;
and step six, after the slope is repaired, discharging water in the water filling belt and the buoyancy tank, enabling the steel caisson to float to the water surface again, and hoisting the steel caisson back to the channel bank by using a crane.
2. The underwater operation construction method for treating the channel defects according to claim 1, wherein: a traction ring is arranged at one end of the mounting groove at the bottom of the side plate, which is far away from the back plate, and a cable is tied on the traction ring; in the first step and the second step, workers pull cables on the ditch bank to adjust the posture of the steel caisson, and the positioning of the steel caisson is achieved.
3. The underwater operation construction method for treating the channel defects according to claim 1, wherein: the floating boxes are cuboids, each floating box is provided with a water inlet and outlet and an air inlet and outlet, the water inlet and outlet and the air inlet and outlet are respectively arranged on two parallel surfaces of the floating box, and the water inlet and outlet and the air inlet and outlet are both arranged at the geometric center of the plane where the water inlet and outlet and the air inlet and outlet are arranged; and in the sixth step, the water in the buoyancy tank is discharged in a process that a valve on the water inlet and drain main pipe is opened, the air inlet and exhaust main pipe is connected with an air compressor, the air compressor is used for inflating the buoyancy tank, compressed air enters the buoyancy tank from the air inlet and outlet, and water in the buoyancy tank is pressed out from the water inlet and drain port and is drained to the channel from the water inlet and drain main pipe.
4. The underwater operation construction method for treating the channel defects according to claim 3, wherein: the floating box comprises a first floating box arranged on the outer side surface of the left side plate, a second floating box arranged on the outer side surface of the back plate, a third floating box arranged on the outer side surface of the right side plate and a fourth floating box arranged on the inner side surface of the back plate; the second floating box and the fourth floating box are both parallel to the mounting groove at the bottom of the back plate; the first buoyancy tank and the third buoyancy tank are obliquely arranged relative to the mounting groove at the bottom of the side plate.
5. The underwater operation construction method for treating the channel defects according to claim 1, wherein: the mounting groove comprises a first groove plate and a second groove plate, the upper ends of the first groove plate and the second groove plate are connected in a sealing mode, partition plates and buckling parts are arranged on the first groove plate and the second groove plate respectively, a cavity for mounting the water-filled belt is formed above the two partition plates after the first groove plate and the second groove plate are fixed, and the water-filled belt is arranged in the cavity; a movable plate is arranged between the water charging belt and the partition plate; clamping grooves are formed in two sides of the water stop, a notch is formed in the bottom of the water stop, and a through hole communicated with the notch is formed in the upper end face of the water stop; the upper end of the water stop is clamped between the partition plate and the buckling part, and the buckling part is embedded into the clamping groove; an extrusion rod is arranged in the notch, and a plurality of connecting columns are arranged on the extrusion rod at intervals; the connecting column is inserted into the through hole, and the upper end of the connecting column is fixed with the movable plate; the connecting column is sleeved with a spring, the upper end of the spring is in contact with the movable plate, and the lower end of the spring is in contact with the upper end face of the water stop belt; the sealing band is disposed within the notch and secured to the squeeze bar.
6. The underwater operation construction method for treating the channel defects according to claim 5, wherein: the bottom surface of the water stop is provided with a plurality of grooves along the length direction of the water stop; the bottom of waterstop is provided with the rectangle cavity, and the height of rectangle cavity is less than the height of draw-in groove.
7. The underwater operation construction method for treating the channel defects according to claim 6, wherein: the upper end of the water stop is provided with a reinforcing plate, and the height of the reinforcing plate is higher than that of the clamping groove.
8. The underwater operation construction method for treating the channel defects according to claim 5, wherein: the sealing strip comprises a rectangular sleeve, a core plate, a connecting part and a pipe clamp which are integrally formed; the core plate is arranged inside the rectangular sleeve, the upper end of the core plate is connected with the upper end of the rectangular sleeve, and a gap is formed between the lower end of the core plate and the bottom of the rectangular sleeve; the connecting parts are arranged on two sides of the core plate symmetrically, one end of each connecting part is connected with the core plate, the other end of each connecting part is connected with the rectangular sleeve, and the connecting parts are all inclined downwards; the pipe clamps are arranged at the upper end of the sealing belt at intervals and are buckled with the extrusion rod.
9. The underwater operation construction method for treating the channel defects according to claim 5, wherein: the top parts of the first groove plate and the second groove plate are fixed through upper bolts, and the joint surface of the first groove plate and the second groove plate is coated with sealant; the second groove plate is provided with a threaded hole, the first groove plate is provided with a bolt hole corresponding to the threaded hole, a lower bolt is inserted into the bolt hole and screwed into the corresponding threaded hole, and a sealing washer is arranged between the lower bolt and the first groove plate.
10. The underwater operation construction method for treating the channel defect as claimed in any one of claims 1 to 9, wherein: the one end that the backplate was kept away from to the mounting groove of curb plate bottom is provided with the gyro wheel, and the height that highly is less than the mounting groove lower extreme and is higher than the height of waterstop lower extreme of gyro wheel minimum, and the one side that the backplate was kept away from to the gyro wheel stretches out in the mounting groove.
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| CN206829157U (en) * | 2017-06-05 | 2018-01-02 | 黄河勘测规划设计有限公司 | The channel steel cofferdam system quickly repaired for the slope lining cutting of water channel canal |
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