CN111719496A - Dam surface underwater repairing device and method - Google Patents
Dam surface underwater repairing device and method Download PDFInfo
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- CN111719496A CN111719496A CN202010588631.5A CN202010588631A CN111719496A CN 111719496 A CN111719496 A CN 111719496A CN 202010588631 A CN202010588631 A CN 202010588631A CN 111719496 A CN111719496 A CN 111719496A
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- construction
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- dam
- face
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a dam face underwater repairing device which comprises a construction bin and a man-entering pipeline, wherein the construction bin is a hollow cylinder with an opening on one surface; the opening end of the water-stopping device faces the horizontal direction, a main water-stopping belt and an auxiliary water-stopping belt are sequentially arranged on the annular end face of the opening end of the water-stopping device from inside to outside, and the outer edge of the auxiliary water-stopping belt exceeds the outer edge of the end face of the opening end of the construction bin; the side wall of the water inlet pipe is provided with a water pumping hole and a manhole respectively, and the manhole pipe is communicated with the manhole and is fixedly connected with the construction bin in a sealing way. The invention also discloses an underwater dam surface repairing method by using the device. Before construction, the invention evacuates water in the construction bin, realizes the adsorption of the construction bin on the dam surface by utilizing the internal and external pressure difference of the construction bin and the water stop device, forms a waterless construction environment in the construction bin, and provides a construction environment which is equal to dry land construction.
Description
Technical Field
The invention belongs to the technical field of underwater construction repair of hydraulic engineering, and particularly relates to a dam surface underwater repair device and method.
Background
At present, reservoir dam danger eliminating and reinforcing technologies at home and abroad need to realize dry land construction and restoration, namely, reservoir emptying is carried out to a certain water level, and then construction is carried out. However, the construction cost is high, the construction period is long, the effect is slow, and the loss of the storage capacity of the emptying reservoir affects the power generation, irrigation, shipping and the like, so that huge economic loss is caused. Although some existing underwater repair materials such as PBM polymer, SR impermeable module, SXM underwater sealant and the like can ensure that the underwater concrete is not dispersed to a certain extent, and further realize underwater concrete repair, the construction cost of the technology is still high, and the technology is not mature.
Disclosure of Invention
The invention provides a dam surface underwater repairing device and method with low construction cost and short construction period for solving the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems in the prior art is as follows: an underwater dam face repairing device comprises a construction bin and a man-entering pipeline, wherein the construction bin is a hollow cylinder with an opening on one side; the opening end of the water-stopping device faces the horizontal direction, a main water-stopping belt and an auxiliary water-stopping belt are sequentially arranged on the annular end face of the opening end of the water-stopping device from inside to outside, and the outer edge of the auxiliary water-stopping belt exceeds the outer edge of the end face of the opening end of the construction bin; the side wall of the water inlet pipe is provided with a water pumping hole and a manhole respectively, and the manhole pipe is communicated with the manhole and is fixedly connected with the construction bin in a sealing way.
Further, still include gasbag and balancing weight, the gasbag is used for exerting ascending power to the construction storehouse, and the balancing weight is used for exerting decurrent power to the construction storehouse.
Furthermore, a water stop pressing strip is arranged on the back of the part of the auxiliary water stop belt, which exceeds the outer edge of the end surface of the construction bin; the left side and the right side of the opening end of the construction bin are provided with hydraulic telescopic rods which can stretch in the horizontal direction; one end of the hydraulic telescopic rod is fixed on the construction bin, and the other end of the hydraulic telescopic rod is pressed on the water stop pressing strip after extending out.
Further, the construction bin is square box-shaped.
Further, the inner wall size when the opening of construction storehouse was placed upwards is: the length is 2-3 m, the width is 2-3 m, the height is 2-3 m, and the wall thickness is 0.4-0.6 m.
Further, the construction bin is cylindrical with one end open and the other end closed.
Further, the inner wall size when the opening of construction storehouse was placed upwards is: the diameter is 2-3 m, the height is 2-3 m, and the wall thickness is 0.4-0.6 m.
Further, the construction bin is made of concrete.
The invention also provides a dam face underwater repairing method by using the dam face underwater repairing device, which comprises the following steps:
firstly, fixedly connecting a construction bin with a man-in pipeline, and pulling and hoisting the construction bin by using a cable to enable an opening of the construction bin to face a dam face and an opening of the man-in pipeline to face upwards and hoist the construction bin into water;
step two, after the construction bin descends to the dam face defect, enabling the construction bin to be close to the dam body, and enabling the auxiliary water stop belt to be tightly attached to the dam face;
step three, water in the construction bin is pumped through the water pumping hole, and a main water stop of the construction bin is tightly attached to the dam surface under the action of external water pressure;
fourthly, the operating personnel and the construction materials enter the construction bin through the manhole, and the operating personnel performs construction operation;
and fifthly, after construction is finished, injecting water into the construction bin through the water pumping hole, balancing the water pressure inside and outside the construction bin, and hoisting and recovering the construction bin.
The invention has the advantages and positive effects that: the construction bin with one open end is arranged, water in the construction bin is pumped out before construction, the adsorption of the construction bin on a dam surface is realized by utilizing the internal and external pressure difference of the construction bin and the water stop device, a water-free construction environment is formed in the construction bin, and a construction environment which is equal to that of dry land construction is provided. The method can be used in places where construction and repair are needed on the dam face at the upstream of the dam, underwater safe and efficient construction of dam face repair is achieved, and economic loss caused by construction when the reservoir is emptied is avoided.
Drawings
FIG. 1 is a schematic structural diagram of an underwater dam surface repairing device.
Fig. 2 is a sectional view a-a of fig. 1.
In the figure: 1. a dam body; 2. dam face defects; 3. a construction bin; 4. a water pumping hole; 5. a human inlet pipeline; 6. a cable; 7. an air bag; 8. a balancing weight; 9. a main water stop; 10. an auxiliary water stop; 11. water stop layering; 12. a hydraulic telescopic rod.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are enumerated in conjunction with the accompanying drawings, and the following detailed description is given:
referring to fig. 1 to 2, an underwater dam surface repairing device includes a construction bin 3 and a man-entering pipeline 5, wherein the construction bin 3 is a hollow cylinder with an opening on one side; the opening end of the water-stopping device faces the horizontal direction, a main water-stopping belt 9 and an auxiliary water-stopping belt 10 are sequentially arranged on the annular end face of the opening end of the water-stopping device from inside to outside, and the outer edge of the auxiliary water-stopping belt 10 exceeds the outer edge of the end face of the opening end of the construction bin 3; the side wall of the water pumping device is respectively provided with a water pumping hole 4 and a manhole, and a manhole pipe 5 is communicated with the manhole and is fixedly connected with the construction bin 3 in a sealing way.
The annular end face of the opening end of the construction bin 3 can extend outwards or inwards and is used for increasing the water stop adhesion surface, so that the adsorption force and the friction force are increased.
Further, an air bag 7 and a counterweight 8 can be further included, wherein the air bag 7 can be used for exerting upward force on the construction cabin 3, and the counterweight 8 can be used for exerting downward force on the construction cabin 3. Fill the gassing to gasbag 7 to and increase and decrease and put into the balancing weight 8 in the construction storehouse 3, can finely tune the stress balance in construction storehouse 3, avoid hawser 6 to adjust to float too big and cause 3 slopes etc. in construction storehouse.
Furthermore, a water stop pressing strip 11 can be arranged on the back of the part of the auxiliary water stop belt 10, which exceeds the outer edge of the end face of the construction bin 3; the left side and the right side of the opening end of the construction bin 3 can be provided with hydraulic telescopic rods 12 which can stretch in the horizontal direction; one end of the hydraulic telescopic rod 12 is fixed on the construction bin 3, and the other end of the hydraulic telescopic rod is pressed on the water stop pressing strip 11 after extending out.
The hydraulic telescopic rod 12 is a telescopic hydraulic cylinder which is formed by sleeving two or more piston type hydraulic cylinders, and a piston rod of a piston cylinder of a previous stage is a cylinder barrel of a piston cylinder of a next stage. When pressure oil enters from the rodless cavity, the cylinder barrel with the largest effective area of the piston begins to extend, and when the pressure oil reaches the end point, the cylinder barrel with the next largest effective area of the piston begins to extend. The hydraulic telescopic rod can obtain a long working stroke when extending out, has short axial length when retracting, occupies small space and has compact structure. The hydraulic telescopic rod 12 is driven by a hydraulic pump, a hydraulic station can be arranged, and the hydraulic telescopic rod 12 is controlled to stretch out and draw back through a hydraulic valve.
The hydraulic telescopic rod 12 can be a hydraulic telescopic rod in the prior art, and is installed and driven and controlled by adopting a conventional technical means.
The telescopic end of the hydraulic telescopic rod 12 can be provided with a hydraulic radial expansion sleeve head, when the telescopic end of the hydraulic telescopic rod 12 extends to the position of the water stop pressure strip 11, the expansion sleeve head expands outwards along the radial direction under the action of hydraulic oil, and the expansion sleeve head is pressed on the water stop pressure strip 11 to apply pressure towards the auxiliary water stop belt 9 to the water stop pressure strip 11. The hydraulic radial expansion sleeve head can adopt the structure in the prior art and adopts the conventional technical means for installation and drive control.
Further, the construction bin 3 may be a square box shape. Namely, the appearance is a square cylinder, a square cavity is arranged in the square cylinder, and one end of the square cylinder is opened. When the square box-shaped construction bin 3 is placed with the opening upwards, the size of the inner wall is as follows: the length is 2-3 m, the width is 2-3 m, the height is 2-3 m, and the wall thickness is 0.4-0.6 m.
Further, the construction bin 3 may also be a cylinder having one end open and the other end closed. Namely, the appearance is a cylindrical column body, a cylindrical cavity is arranged in the cylindrical column body, and one end of the cylindrical column body is opened. When 3 openings of construction storehouse of cylinder were placed up, its inner wall size was: the diameter is 2-3 m, the height is 2-3 m, and the wall thickness is 0.4-0.6 m.
The construction bin 3 may be made of concrete. The concrete manufacturing method is simple and the construction period is short.
The invention also provides an embodiment of a dam face underwater repairing method using the dam face underwater repairing device, which comprises the following steps:
firstly, fixedly connecting a construction bin 3 with a man-in pipeline 5, and pulling and hoisting the construction bin 3 by using a cable 6 to enable an opening of the construction bin 3 to face a dam face and an opening of the man-in pipeline 5 to face upwards to be hoisted into water.
The assembled integral device is lifted into water through the mooring rope 6, the tension of the mooring rope 6 is controlled to ensure that the construction bin 3 is stably sunk to the upstream dam face defect 2 and the opening side faces the dam face.
And step two, after the construction bin 3 descends to the dam face defect, enabling the construction bin 3 to be close to the dam body 1, and enabling the auxiliary water stop belt 10 to be attached to the dam face.
If the back of the auxiliary water stop 10 is provided with a water stop batten 11; and the left and right sides of the opening end of the construction bin 3 are provided with hydraulic telescopic rods 12 which can stretch in the horizontal direction; when the construction bin 3 is close to the dam body 1, the hydraulic telescopic rod 12 is driven to enable the telescopic end of the hydraulic telescopic rod to extend out and be in pressure joint with the water stop batten 11, and pressure towards the dam face is applied to the auxiliary water stop 10; helping the auxiliary water stop 10 to cling to the dam face.
Step three, pumping water in the construction bin 3 through the water pumping hole 4, and tightly attaching a main water stop 9 of the construction bin 3 to the dam surface under the action of external water pressure; and pumping water from the water pumping hole 4, reducing the water level in the construction bin 3 at the moment, and finally pumping out the water in the construction bin 3 to form an atmospheric pressure environment communicated with the outside of the water surface.
If the hydraulic telescopic rod 12 is used for pressing the auxiliary water stop 10, the hydraulic telescopic rod 12 is retracted after water in the construction bin 3 is drained. After the water pumping is finished, an anhydrous construction environment is formed in the construction bin 3.
If use gasbag 7 and balancing weight 8, then the accessible fills the gassing to gasbag 7 and increases and decrease in construction storehouse 3 and put into modes such as balancing weight 8, finely tunes the stress balance in construction storehouse 3, avoids hawser 6 to adjust to float too big and causes construction storehouse 3 slopes etc..
And fourthly, the operating personnel and the construction materials enter the construction bin 3 through the manhole, and the operating personnel performs construction operation.
And fifthly, after construction is finished, injecting water into the construction bin 3 through the water pumping holes 4 to balance the water pressure inside and outside the construction bin 3, and hoisting and recovering the construction bin 3. After the internal and external water pressures are balanced, the adsorption force between the main water stop 9 and the auxiliary water stop 10 and the dam face is reduced, the construction bin 3 is pulled upwards and towards the opposite direction of the dam face, the main water stop 9 and the auxiliary water stop 10 are separated from the dam face, and the construction bin 3 and the like are integrally hoisted.
If the air bag 7 is used, the air bag 7 can be inflated and matched with a hoisting system to float and recover the whole device. The air bag 7 and the balancing weight 8 are used for balancing buoyancy, gravity, pulling force of the mooring rope 6 and friction force borne by the device and can be adjusted according to actual conditions.
The structure, the working process and the working principle of the present invention are further explained by a preferred embodiment of the present invention as follows:
the defect area of the upstream dam surface is about 1m multiplied by 1m and is positioned at the position 20m under water.
An underwater dam surface repairing device comprises a construction bin 3, a man-entering pipeline 5, a mooring rope 6, an air bag 7, a balancing weight 8, a main water stop 9, an auxiliary water stop 10, a water stop pressing strip 11 and a hydraulic telescopic rod 12. The construction bin 3 is hollow and cylindrical, one end of the construction bin is open, the other end of the construction bin is closed, a water pumping hole 4 and a manhole are arranged on the side wall of the construction bin 3, the water pumping hole 4 is used for pumping water, decompressing, filling water and pressurizing for the construction bin 3, and the manhole is used for conveying constructors and construction materials; the hoisting points of the cable 6 on the construction bin 3 are distributed in a triangular shape; the air bag 7 and the balancing weight 8 are used for balancing the gravity, the buoyancy, the pull force of the mooring rope 6 and the like of the construction bin 3 and are arranged according to actual needs; the main water stop belt 9 and the auxiliary water stop belt 10 are both arranged at the end part of one side of the opening of the construction bin 3, the water stop pressing strip 11 is arranged on the auxiliary water stop belt 10, and the hydraulic telescopic rod 12 can apply force towards the dam face to the water stop pressing strip 11 so as to help the auxiliary water stop belt 10 to be attached to the dam face of the dam body 1.
The construction bin 3 is made of concrete, the diameter of the inner wall of a cylinder of the construction bin is 3m, the axial length of the construction bin is 3m, and the wall thickness of the construction bin is 0.5 m; the whole device is stably hung in water through the mooring rope 6, after the device is filled in the water, the construction bin 3 is automatically filled with water, the stress of the mooring rope 6 is adjusted to ensure the underwater posture of the construction bin 3, and the opening of the construction bin 3 is kept facing to the dam surface and is stably sunk; the water level in the manhole is equal to the water level of the reservoir in the sinking process; after the construction bin 3 reaches the vicinity of the upstream dam face defect 2, starting a hydraulic telescopic rod 12, pressing a water stop pressing bar 11 on an auxiliary water stop strip 10, after the auxiliary water stop strip 10 contacts the upstream dam face of the dam, starting to pump water from a water pumping hole 4, lowering the water level in a man-in hole in the water pumping process, reducing the pressure in the construction bin 3, gradually adsorbing the construction bin 3 on the dam face under the action of internal and external pressure difference, after the water pumping is finished, retracting the hydraulic telescopic rod 12, deforming the main water stop strip 9 under stress, pressing and attaching the main water stop strip between the construction bin 3 and the dam face, forming a water-free construction environment in the bin, enabling operators and required materials to enter the construction bin 3 through a manhole, and enabling the operators to start dam face repair; after the repair is finished, water is injected into the construction bin 3 through the water pumping hole 4, the pressure difference between the inside and the outside of the construction bin 3 is gradually balanced, the adsorption force of the main water stop 9 and the auxiliary water stop 10 is reduced, and the construction bin 3 is pulled by the cable 6 to separate the main water stop 9 and the auxiliary water stop 10 from the dam face; if necessary, the air bag 7 can be inflated to increase the buoyancy borne by the whole device, and the device recovery is completed by matching with the cable 6.
In this embodiment, the buoyancy is about 210kN, the dead weight of the construction bin 3 is about 550kN, after a dry chamber construction environment is formed in the construction bin 3, the adsorption force absorbed on the dam surface is about 2500kN, the massage friction coefficient is 0.2, the wall surface friction force borne by the construction bin 3 is about 500kN, and the direction of the friction force changes along with the balance relationship among the dead weight of the device, the buoyancy and the tension of the mooring rope 6, so that the stability of the whole device in the construction process is easily realized.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (9)
1. The dam face underwater repairing device is characterized by comprising a construction bin and a man-entering pipeline, wherein the construction bin is a hollow cylinder with one open side; the opening end of the water-stopping device faces the horizontal direction, a main water-stopping belt and an auxiliary water-stopping belt are sequentially arranged on the annular end face of the opening end of the water-stopping device from inside to outside, and the outer edge of the auxiliary water-stopping belt exceeds the outer edge of the end face of the opening end of the construction bin; the side wall of the water inlet pipe is provided with a water pumping hole and a manhole respectively, and the manhole pipe is communicated with the manhole and is fixedly connected with the construction bin in a sealing way.
2. The dam underwater repair device of claim 1, further comprising an air bag for applying an upward force to the construction chamber and a counterweight for applying a downward force to the construction chamber.
3. The dam face underwater repair device according to claim 1, wherein a water stop bead is provided on the back of the portion of the auxiliary water stop that exceeds the outer edge of the end face of the construction silo; the left side and the right side of the opening end of the construction bin are provided with hydraulic telescopic rods which can stretch in the horizontal direction; one end of the hydraulic telescopic rod is fixed on the construction bin, and the other end of the hydraulic telescopic rod is pressed on the water stop pressing strip after extending out.
4. The dam underwater repair device of claim 1, wherein the construction bin is box-shaped.
5. The dam face underwater repair device of claim 4, wherein the dimensions of the inner wall of the construction chamber when the opening of the construction chamber is placed upward are: the length is 2-3 m, the width is 2-3 m, the height is 2-3 m, and the wall thickness is 0.4-0.6 m.
6. The dam underwater repair device of claim 1, wherein the construction chamber is cylindrical with one end open and the other end closed.
7. The dam face underwater repair device of claim 6, wherein the dimensions of the inner wall of the construction chamber when the opening of the construction chamber is placed upward are: the diameter is 2-3 m, the height is 2-3 m, and the wall thickness is 0.4-0.6 m.
8. The dam underwater repair device of claim 1, wherein the construction chamber is made of concrete.
9. An underwater dam repair method using the underwater dam repair device according to any one of claims 1 to 8, comprising the steps of:
firstly, fixedly connecting a construction bin with a man-in pipeline, and pulling and hoisting the construction bin by using a cable to enable an opening of the construction bin to face a dam face and an opening of the man-in pipeline to face upwards and hoist the construction bin into water;
step two, after the construction bin descends to the dam face defect, enabling the construction bin to be close to the dam body, and enabling the auxiliary water stop belt to be tightly attached to the dam face;
step three, water in the construction bin is pumped through the water pumping hole, and a main water stop of the construction bin is tightly attached to the dam surface under the action of external water pressure;
fourthly, the operating personnel and the construction materials enter the construction bin through the manhole, and the operating personnel performs construction operation;
and fifthly, after construction is finished, injecting water into the construction bin through the water pumping hole, balancing the water pressure inside and outside the construction bin, and hoisting and recovering the construction bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010588631.5A CN111719496A (en) | 2020-06-24 | 2020-06-24 | Dam surface underwater repairing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010588631.5A CN111719496A (en) | 2020-06-24 | 2020-06-24 | Dam surface underwater repairing device and method |
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| Publication Number | Publication Date |
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| CN111719496A true CN111719496A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010588631.5A Pending CN111719496A (en) | 2020-06-24 | 2020-06-24 | Dam surface underwater repairing device and method |
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| CN (1) | CN111719496A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775533A (en) * | 2022-05-24 | 2022-07-22 | 四川省水利电力工程局有限公司 | Dam upstream face is restoreed construction equipment under water |
-
2020
- 2020-06-24 CN CN202010588631.5A patent/CN111719496A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775533A (en) * | 2022-05-24 | 2022-07-22 | 四川省水利电力工程局有限公司 | Dam upstream face is restoreed construction equipment under water |
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