CN111501674A - Water-stopping inspection and leakage treatment structure for structural joint of plunge pool and water-stopping inspection and leakage treatment method - Google Patents
Water-stopping inspection and leakage treatment structure for structural joint of plunge pool and water-stopping inspection and leakage treatment method Download PDFInfo
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- CN111501674A CN111501674A CN202010298097.4A CN202010298097A CN111501674A CN 111501674 A CN111501674 A CN 111501674A CN 202010298097 A CN202010298097 A CN 202010298097A CN 111501674 A CN111501674 A CN 111501674A
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The invention provides a structure for water stop inspection and leakage treatment of a structural joint of a plunge pool and a method for water stop inspection and leakage treatment, wherein a hollow groove is arranged between an upper water stop structure and a lower water stop structure of the structural joint between concrete plates forming the plunge pool, and the hollow groove is used as a water stop defect inspection channel and can also be used as a leakage treatment channel; dividing the plunge pool into a plurality of inspection areas through a water stopping separation structure welded between an upper water stopping structure and a lower water stopping structure; the structure seams in the same inspection area are communicated with each other, and the structure seams between different inspection areas are not communicated with each other; more than three steel pipes connected to the basic gallery from the hollow groove are pre-buried in each inspection area of the plunge pool and used as a water inlet pipe, a water outlet pipe and an exhaust pipe for water stop inspection and a grouting pipe and a grout outlet pipe for leakage treatment. The hollow groove and the pre-buried steel pipe are not only water stop checking structures but also leakage processing channels. The invention can quickly find the water leakage position, carry out nondestructive repair treatment, eliminate the hidden danger of the leakage of the plunge pool and improve the flood discharge safety degree of the dam.
Description
Technical Field
The invention relates to a structure and a method for inspecting and treating water stop of a seam of a plunge pool structure. The method is suitable for water seepage inspection and treatment of concrete structures in water conservancy and hydropower engineering.
Background
The plunge pool (or stilling pool) is a concrete structure built at the bottom of a riverbed at the downstream of a dam, and when the dam discharges flood, the water body in the plunge pool (or stilling pool) can dissipate the energy of the flood discharged by the dam. The general plunge pool (or stilling pool) is wide in range and is formed by connecting a plurality of concrete plates, and water stop is arranged at the indirect joint of the plates to prevent water bodies in the pool from leaking along the joint. Because the concrete at the lower part of the water stop is difficult to pour, the defect of incompact combination with the concrete can be caused to form a water seepage hidden trouble. Especially, the plunge pool (or stilling pool) bears the impact of flood discharge water flow and the repeated action of pulsating pressure for a long time, and the fatigue deformation of water stopping at the joint is easy to cause, thereby forming a water seepage channel. Because the concrete plates forming the plunge pool (or stilling pool) are more, a large number of structural joints are formed, and the water stopping defects of the structural joints are hidden in the concrete, so that the surface is difficult to observe. Accidents of water flooding galleries caused by large water leakage occur in some projects, and the bottom plate of the water-filled pond can be unstable in severe cases. The leakage treatment needs to be carried out by drilling and grouting on the surface of the concrete, and certain damage is caused to the overflowing surface and water stop of the concrete.
How to find the accurate water seepage position quickly and carry out reliable seepage treatment without damaging the concrete overflowing surface and water stopping is the guarantee of the safe operation of the plunge pool.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: to the problem that above-mentioned exists, provide a structure is handled in pond structure seam stagnant water inspection and seepage, can seek the position of leaking fast to the harmless restoration is handled, eliminates pond seepage hidden danger, improves dam flood discharge degree of safety.
Therefore, the technical scheme adopted by the invention is as follows: a structure seam water stop inspection and leakage treatment structure of a plunge pool is characterized in that a structure seam between concrete plates forming the plunge pool is provided with a hollow groove between an upper water stop structure and a lower water stop structure, and the hollow groove is used as a water stop defect inspection channel and a leakage treatment channel;
dividing the plunge pool into a plurality of inspection areas through a water stopping separation structure welded between an upper water stopping structure and a lower water stopping structure; the structure seams in the same inspection area are communicated with each other, and the structure seams between different inspection areas are not communicated with each other;
more than three steel pipes connected to the basic gallery from the hollow groove are pre-buried in each inspection area of the plunge pool and used as a water inlet pipe, a water outlet pipe and an exhaust pipe for water stop inspection and a grouting pipe and a grout outlet pipe for leakage treatment.
Further, the inlet of the water inlet pipe and the outlet of the water outlet pipe in each inspection area are arranged far away from each other, and the outlet of the exhaust pipe is located at the highest position of the inspection area.
Furthermore, the inspection area is rectangular, the inlet of the water inlet pipe and the outlet of the water outlet pipe are diagonally arranged at the structural seam on the outermost side of the inspection area, and the outlet of the exhaust pipe is positioned on the side of the highest position of the rectangular inspection area.
Furthermore, pre-buried steel pipes are connected between the two ends of the hollow groove which is not provided with the structural seams of the inlet pipe inlet, the outlet pipe outlet and the exhaust pipe outlet and the basic gallery to serve as a spare grouting pipe and a spare grout outlet pipe.
And furthermore, more than four steel pipes are arranged, wherein three steel pipes are used as a water inlet pipe, a water outlet pipe and an exhaust pipe for water stop inspection, the rest steel pipes are used as grouting pipes or slurry outlet pipes for leakage treatment, and the steel pipes used as the water inlet pipe and the water outlet pipe for water stop inspection can be used as the grouting pipes or the slurry outlet pipes during leakage treatment.
Further, each steel pipe all sets up the valve.
Another object of the invention is to provide a method for inspecting and treating leakage of water in the seam of the plunge pool structure. Therefore, the invention adopts the following technical scheme:
a method for inspecting water seal of a structural joint of a plunge pool and treating leakage is characterized in that the inspection of the structural joint of the plunge pool comprises two stages of inspection;
the inspection of the plunge pool in the first stage before the first water filling comprises the following steps: each inspection area injects pressure water into the hollow groove through the water inlet pipe for inspection; temporarily closing the other reserved steel pipes except the water inlet pipe, the water outlet pipe and the exhaust pipe during water pressing, observing and recording the water quantity and the external leakage quantity of the water outlet pipe when the water outlet pipe starts to discharge water and observing whether the surface of the structural joint is seeped or not and recording the water seepage position when the water pressure of the water outlet pipe is constant;
checking leakage of the plunge pool in the operation period at the second stage, checking whether each embedded steel pipe leaks or not in a corridor regularly, and measuring water quantity and recording water seepage positions if water leaks;
carrying out leakage treatment on an inspection area where water seepage exists on the surface of the structural joint or the pre-buried steel pipe leaks in the operation period according to the area; the leakage treatment comprises the following steps:
pouring water-soluble polyurethane slurry into the basic gallery from one end to the other end through the embedded steel pipe, wherein the slurry flows along the structural joint hollow groove under certain grouting pressure, permeates into a concrete joint and fills the gap defect between concrete and water stop; after the pipe orifice at the other end discharges the thick liquid, the thick liquid discharging pipe is closed, and after the thick liquid is discharged and the pressure is stabilized for a period of time, the grouting pipe is closed; after the grout is cured, the cured grout not only fills the defects between concrete and water stop, but also forms a water stop strip which has certain elasticity and can expand when meeting water in the hollow groove, which is equivalent to adding one water stop, and improves the anti-seepage effect of the plunge pool.
The preferable pressure of pressurized water during inspection and grouting pressure during leakage treatment is 0.1-0.2 MPa.
The invention has the beneficial effects that: according to the invention, the structure seam of the plunge pool is divided into zones, so that a leakage part can be rapidly found out, a leakage channel can be found out through the hollow grooves arranged in the zones, repair treatment can be carried out, an auxiliary water stop can be added, a rapid inspection and nondestructive treatment method is provided for defects of plunge pool concrete and water stop, the construction is simple, the inspection is convenient, and the safety is high.
Drawings
FIG. 1 is a schematic view of a water inspection subarea of a seam of the plunge pool structure.
FIG. 2 is a schematic view of a single inspection zone inspection and grouting of the present invention.
Fig. 3 and 4 are sectional views of the structural joint water of the present invention, which are respectively a sectional view a-a and a sectional view B-B of fig. 2.
Fig. 5 is a sectional view of a structural seam water stop zone of the present invention, shown in section C-C of fig. 1.
Detailed Description
As shown in fig. 1 to 5, the present embodiment is a structure and a method for inspecting and processing water at a seam of a plunge pool, which can quickly find a position of water leaking at the seam of the plunge pool and perform reliable repairing processing.
The specific implementation method of the embodiment is as follows:
concrete is poured on the riverbed at the downstream of the dam to form a plunge pool, and the structural seams 3 among the concrete plates 2 are connected through water stop copper sheets 4 to prevent water bodies in the pool from leaking. 2 water stop copper sheets 4 are arranged, and a structural joint between two water stops is locally enlarged to form a hollow groove 5 which is used as a passage for detecting and treating defects of water stop and concrete.
Dividing the plunge pool into a plurality of closed inspection areas 10 by water-stopping separation sheets 41 welded on an upper water-stopping copper sheet 4 and a lower water-stopping copper sheet 4; the structure seam hollow grooves 5 in the same inspection area 10 are communicated with each other, and the structure seam hollow grooves 5 between the adjacent inspection areas are not communicated.
3 steel pipes 6 are pre-buried in each inspection area, and the hollow groove 5 is connected into the foundation gallery 1 of the plunge pool and is respectively used as a water inlet pipe 61, a water outlet pipe 62 and an exhaust pipe 63 for water stop inspection; by selecting the position of the water-stop partition sheet 41, each inspection area can be divided into a rectangle, the water inlet pipe 61 and the water outlet pipe 62 are arranged diagonally, and the air outlet pipe 63 is located on the side where the position is highest. The water inlet pipe 61, the water outlet pipe 62 and the exhaust pipe 63 can be used as a grouting pipe or a grout outlet pipe and an exhaust pipe when needed during leakage treatment. The steel pipes are pre-buried at two ends of the hollow groove 5 which is not provided with the structural joint of the inlet of the water inlet pipe, the outlet of the water outlet pipe and the outlet of the exhaust pipe and are led to the basic gallery 1 to be used as a grouting pipe 64-1 and a grout outlet pipe 64-2 during leakage treatment.
And the outlet of each steel pipe in the gallery is provided with a valve.
After the completion of pouring of the plunge pool, water stopping inspection is required before water is filled for the first time. Each inspection area 10 is inspected by injecting pressurized water into the hollow groove 5 through the water inlet pipe 61. And temporarily closing the reserved grouting pipe 64-1 and the reserved slurry outlet pipe 64-2 during water pressing, observing and recording the water quantity and the external leakage quantity of the water outlet pipe when the water outlet pipe 62 starts to discharge water under constant water pressure, observing whether the surface of the structural joint is water seepage or not, and recording the water seepage position.
And (3) periodically checking whether each embedded steel pipe leaks in the corridor 1 during the running period of the plunge pool, and measuring the water quantity and recording the water seepage position if water leaks.
And carrying out leakage treatment on an inspection area in which water seepage exists on the surface of the structural joint or the pre-buried steel pipe leaks in the operation period. The method specifically comprises the following steps:
the following embodiment is selected according to the area of the inspection area and the amount of water leakage, and the first embodiment can be selected when the inspection area is larger or the amount of water leakage is smaller, and the second embodiment can be selected conversely.
In the first embodiment, all grouting pipes 64-1 and all grout outlet pipes 64-2 in the inspection area are closed, water-soluble polyurethane grout is poured into the hollow grooves through the pre-buried water inlet pipe 61 in the basic gallery, the grout flows along the structural joint hollow grooves 5 under certain grouting pressure, permeates into concrete gaps and fills the gap defects 7 between the concrete and the water-stop copper sheets 4. And (3) closing the corresponding water outlet pipe and the exhaust pipe orifice after the water outlet pipe 62 and the exhaust pipe 63 in the other gallery discharge thick slurry, and closing the water inlet pipe 61 after the slurry is discharged and stabilized for 20 minutes, and finishing after the slurry is solidified for 24 hours.
In the second embodiment, water-soluble polyurethane grout is poured into the hollow groove through the embedded steel pipe (grouting pipe 64-1) in the basic gallery, and the grout flows along the structural joint hollow groove 5 under certain grouting pressure and permeates into a concrete gap to fill the gap defect 7 between the concrete and the water stop copper sheet 4. And closing the corresponding slurry outlets one by one after the slurry is discharged from the orifices of the slurry outlet pipes 64-2, the water inlet pipe 61, the water outlet pipe 62 and the exhaust pipe 63 in the other gallery, stopping the slurry pressure stabilization for 20 minutes, closing the grouting pipes 64-1, and finishing after the slurry is solidified for 24 hours.
The cured slurry not only fills the defect 7 between the concrete and the water stop copper sheet 4, but also forms a water stop strip which has certain elasticity and can expand when meeting water in the hollow groove 5, which is equivalent to adding one water stop, and improves the anti-seepage effect of the plunge pool.
The pressure of pressurized water during inspection and the grouting pressure during leakage treatment are 0.1-0.2 MPa.
The above embodiment is merely a preferred embodiment of the present invention, and those skilled in the art will understand that modifications or substitutions of technical solutions or parameters in the embodiment can be made without departing from the principle and essence of the present invention, and all of them shall be covered by the protection scope of the present invention.
Claims (7)
1. A structure seam water stop inspection and leakage treatment structure of a plunge pool is characterized in that a structure seam between concrete plates forming the plunge pool is provided with a hollow groove between an upper water stop structure and a lower water stop structure, and the hollow groove is used as a water stop defect inspection channel and a leakage treatment channel;
dividing the plunge pool into a plurality of inspection areas through a water stopping separation structure welded between an upper water stopping structure and a lower water stopping structure; the structure seams in the same inspection area are communicated with each other, and the structure seams between different inspection areas are not communicated with each other;
more than three steel pipes connected to the basic gallery from the hollow groove are pre-buried in each inspection area of the plunge pool and used as a water inlet pipe, a water outlet pipe and an exhaust pipe for water stop inspection and a grouting pipe and a grout outlet pipe for leakage treatment.
2. The structure of claim 1, wherein the inlet of the inlet pipe and the outlet of the outlet pipe in each inspection area are located away from each other, and the outlet of the exhaust pipe is located at the highest position of the inspection area.
3. The structure for inspecting and treating water seepage of a structural joint of a plunge pool according to claim 1, wherein the inspection area is rectangular, the inlet of the water inlet pipe and the outlet of the water outlet pipe are diagonally arranged at the structural joint at the outermost side of the inspection area, and the outlet of the air outlet pipe is positioned at the side of the highest position of the rectangular inspection area.
4. The structure of claim 1, wherein four or more steel pipes are provided, three of the steel pipes are used as the water inlet pipe, the water outlet pipe and the exhaust pipe for water sealing inspection, the remaining steel pipes are used as the grouting pipe or the grout outlet pipe for leakage treatment, and the steel pipes used as the water inlet pipe and the water outlet pipe for water sealing inspection can be used as the grouting pipe or the grout outlet pipe during leakage treatment.
5. The structure for inspecting water seal and treating seepage of structural joints of plunge pool according to claim 1, characterized in that pre-buried steel pipes are connected between the two ends of the hollow groove of the structural joint without the inlet of the water inlet pipe, the outlet of the water outlet pipe and the outlet of the exhaust pipe and the basic gallery as spare grouting pipes and outlet pipes.
6. The structure of claim 1, wherein each steel pipe is provided with a valve.
7. The method for inspecting water stopping and treating leakage of a structure for processing joint sealing water of a plunge pool structure according to claim 1, wherein the inspection for inspecting water stopping of the joint of the plunge pool structure comprises two stages of inspection;
the inspection of the plunge pool in the first stage before the first water filling comprises the following steps: each inspection area injects pressure water into the hollow groove through the water inlet pipe for inspection; temporarily closing the other reserved steel pipes except the water inlet pipe, the water outlet pipe and the exhaust pipe during water pressing, observing and recording the water quantity and the external leakage quantity of the water outlet pipe when the water outlet pipe starts to discharge water and observing whether the surface of the structural joint is seeped or not and recording the water seepage position when the water pressure of the water outlet pipe is constant;
checking leakage of the plunge pool in the operation period at the second stage, checking whether each embedded steel pipe leaks or not in a corridor regularly, and measuring water quantity and recording water seepage positions if water leaks;
carrying out leakage treatment on an inspection area where water seepage exists on the surface of the structural joint or the pre-buried steel pipe leaks in the operation period according to the area; the leakage treatment comprises the following steps:
pouring water-soluble polyurethane slurry into the basic gallery from one end to the other end through the embedded steel pipe, wherein the slurry flows along the structural joint hollow groove under certain grouting pressure, permeates into a concrete joint and fills the gap defect between concrete and water stop; after the pipe orifice at the other end discharges the thick liquid, the thick liquid discharging pipe is closed, and after the thick liquid is discharged and the pressure is stabilized for a period of time, the grouting pipe is closed; after the grout is cured, the cured grout not only fills the defects between concrete and water stop, but also forms a water stop strip which has certain elasticity and can expand when meeting water in the hollow groove, which is equivalent to adding one water stop, and improves the anti-seepage effect of the plunge pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010298097.4A CN111501674A (en) | 2020-04-16 | 2020-04-16 | Water-stopping inspection and leakage treatment structure for structural joint of plunge pool and water-stopping inspection and leakage treatment method |
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| CN202010298097.4A CN111501674A (en) | 2020-04-16 | 2020-04-16 | Water-stopping inspection and leakage treatment structure for structural joint of plunge pool and water-stopping inspection and leakage treatment method |
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| CN111501674A true CN111501674A (en) | 2020-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113203669A (en) * | 2021-04-26 | 2021-08-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Communication test method for detecting leakage of core wall of reservoir dam |
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| CN110954274A (en) * | 2019-11-25 | 2020-04-03 | 通号建设集团有限公司 | Assembly type pipe gallery waterproof test device and method |
| CN212506118U (en) * | 2020-04-16 | 2021-02-09 | 中国电建集团华东勘测设计研究院有限公司 | Structure is handled with seepage to stagnant water inspection of plunge pool structure seam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103557994A (en) * | 2013-11-21 | 2014-02-05 | 深圳市城市优筑科技有限公司 | External window side seam waterproof detection method and detection device |
| CN103603317A (en) * | 2013-12-11 | 2014-02-26 | 国家电网公司 | Water-stopping and leakage-prevention method for expansion joint of high-head water retaining structure |
| CN203866777U (en) * | 2014-04-25 | 2014-10-08 | 中国水电顾问集团华东勘测设计研究院有限公司 | Grouting treatment structure used after water stopping of cross joints of concrete dam fails |
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| CN113203669A (en) * | 2021-04-26 | 2021-08-03 | 中国电建集团贵阳勘测设计研究院有限公司 | Communication test method for detecting leakage of core wall of reservoir dam |
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Application publication date: 20200807 |