CN102383397B - Underwater suspended and drifted plugging construction method for high heads - Google Patents
Underwater suspended and drifted plugging construction method for high heads Download PDFInfo
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- CN102383397B CN102383397B CN201010273533.9A CN201010273533A CN102383397B CN 102383397 B CN102383397 B CN 102383397B CN 201010273533 A CN201010273533 A CN 201010273533A CN 102383397 B CN102383397 B CN 102383397B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
An underwater suspended and drifted plugging construction method for high heads includes steps of manufacturing a plug which is in the shape matched with a leakage port or piping port and can be suspended in water, mounting a trailing rope at the tail end of the plug and a guide rope which is capable of suspending in the water at the front end of the plug, placing a cloth bag filled with salt into a hollow-out portion of ends of the plug, throwing the plug into the water from the upstream of a constructed work and releasing the trailing rope at the tail end of the plug along with sinking, so that the plug can drift towards the downstream under the action of water flow when sinking to a leakage layer, the trailing rope is released slowly until the plug enters the leakage or piping port, and plugging is realized.
Description
Technical field
The present invention is for water conservancy and hydropower industry, relates to a kind ofly adopting high water head underwater hovering drift plugging construction method to be subject to broken ring to power station structure or water conservancy projects and shutoff is carried out in leakage or the piping of appearance.
Background technology
Because contingency causes power station structure or the broken ring of some water conservancy projectss, occur to leak or piping, when constructor can arrive accident vertically directly over time, take the method for parabolic, make parabolic directly drop on relief port or piping mouth place, parabolic is implemented effective shutoff to leakage or piping place.
In power station or some water conservancy projectss, the structure of some steel concrete or metal construction type are set, the position of its leakage or piping is often in structure bottom, said method is processed and can be dealt with problems for the leak stopping of low water head, if but take the method for direct parabolic under water at high water head, parabolic is subject to stopping of structure and can not directly drops on and leak or piping mouth place, cannot complete effective shutoff.
At high water head, adopt the drift plugging construction method that suspends can solve leakage or the piping of structure bottom under water, can guarantee construction safety again.First by test, adjust the weight of plugging device, make its in water in suspended state; During shutoff, plugging device is placed in to the upstream of structure (leaking or piping place), submerged, then, by the flow velocity of leakage or piping place upper water, plugging device floats to leakage or shutoff is carried out in piping place.This technology has solved loss and the harm that leakage or piping cause.
Summary of the invention
(1) simulated experiment
According to leak or the head of piping positions and the upstream extremity of structure apart from leaking or the distance of piping place is carried out scaled down simulated test, the material of simulated test is taked suspension, floating thing and sediment are all unfavorable for entering into and leak or piping place.
(2) plugging device design
Plugging device possesses water stopping function after contacting with leakage or piping aperture; Plugging device can bear corresponding negative pressure under water; Plugging device and leakage or piping place Contact have larger impact force, so plugging device will possess shock proof function; The shape of plugging device and leakage or piping aperture approach; After plugging device is made in water in suspended state.
(3) water seal plugging technique measure under plugging device
1) pull rope is set
Plugging device afterbody arranges pull rope, and its pull rope has adjusts the plugging device function of position and the flow direction under water.
2) apply strop
Strop possesses the function of guiding, with the object of strop easily along water (flow) direction by leaking or piping mouth.Consider the smooth traction guiding of plugging device, the strop that arranges in plugging device front portion, strop density is identical with the density of water, can be suspended in water, the density of general nylon rope is all greater than the density of water, the polystyrene foamed material that swathes at nylon rope, swathes a place every 300mm, to keep nylon rope to suspend in water.
3) increase counterweight
Plugging device is done suspension test, its result in advance: must be in suspended state.
Consideration is in pure suspended state, and plugging device is from structure advance into structure bottom, and when leaking or piping mouth moves, likely card is hung on structure, occurs jam.During the pull rope of traction plugging device afterbody, pull rope can only be given the power of plugging device diagonal upward direction, and likely stretchy plugging device not, causes the discarded of plugging device.When some precipitation state slightly, plugging device advances into structure bottom from structure, progressively down vacillates moving under the effect of water flow velocity.Plugging device likely can sink under water, the pull rope of pull end, and pull rope can be given the power of plugging device diagonal upward direction, and the region that plugging device will be got back to middle of the stream makes it recover down to vacillate moving.Therefore at plugging device weight a little after suspended state, there is under water flow action, have above in the situation of traction of pull rope and just can normally move about.
4) dose hypostasis
In order to guarantee that plugging device enters under water rapidly, certainly will will increase counterweight, for plugging device flows smoothly in leakage aspect, its counterweight also will disappear entering leakage aspect.The method of taking counterweight to disappear: adopt salt.Specific implementation method: wrap up salt with cotton, put into the openwork part of stopper end, thereby retinue's plugging device together enters in water, make plugging device fast-descending, when plugging device enters into leakage aspect, salt will be through dissolving disappearance after a while in water, and decline stops, making plugging device in leakage aspect substantially in suspended state.
(4) lower water concrete operations
Plugging device enters in water from the upstream of structure, (rope has dimension mark to loosen the drag rope of afterbody, according to the size of rope, can estimate plugging device residing position under water), with sinking with putting, when plugging device sinks to leakage aspect, drift downstream under the effect of current, slowly send rope to enter into and leaks or piping hole, realizes shutoff.
Accompanying drawing explanation
Fig. 1: high water head underwater hovering drift method ductus arteriosus occluder schematic diagram;
Fig. 2: plugging device sectional drawing.
Wherein: 1: plugging device, 2: leak
11: plugging device body, 12: plugging device cone, 13: steel plate for sealing water, 14: stiffened panel, 15: watertight rubber, 16: pull rope, 17: strop, 18: polyphenyl material.
The specific embodiment
Free end at plugging device is fastened strop, with cotton parcel salt, is placed in the free-ended centrum of plugging device.Strop swathes polystyrene foamed material.
Plugging device enters in water, loosen the pull rope (rope has dimension mark) of afterbody, with sinking with putting, while sinking to leakage aspect, due to slow at the flow rate of liquid of shutoff mouth upstream, strop guiding plugging device moves along the direction of current, along with sluggish flow float to shutoff mouth, during near leakage hole, current are rapidly, when arriving leakage hole, can to leakage hole, carry out shutoff rapidly.
Claims (4)
1. a high water head underwater hovering drift plugging construction method, is characterized in that comprising the steps: that (1) makes plugging device, the profile of plugging device and leakage or piping mouth are adapted, and plugging device can suspend in water; (2) at plugging device tail end, be provided with pull rope, head end is provided with strop, and strop can suspend in water; (3) at stopper end openwork part, put into the cloth bag that salt is housed; (4) plugging device is put into water from the upstream of structure, loosen the pull rope of its afterbody, with sinking with putting, when plugging device sinks to leakage aspect, drift downstream under the effect of current, slowly send pull rope that plugging device is entered into and leaks or piping hole, realizes shutoff.
2. high water head underwater hovering drift plugging construction method as claimed in claim 1, is characterized in that there is dimension mark on pull rope, according to the size on rope, can estimate plugging device residing position under water.
3. high water head underwater hovering drift plugging construction method as claimed in claim 1 or 2, is characterized in that strop density is identical with the density of water, can be suspended in water.
4. high water head underwater hovering as claimed in claim 3 drift plugging construction method, it is characterized in that strop adopts nylon rope, because the density of nylon rope is greater than the density of water, so on nylon rope, swathe polystyrene foamed material, to keep nylon rope to suspend in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273533.9A CN102383397B (en) | 2010-09-06 | 2010-09-06 | Underwater suspended and drifted plugging construction method for high heads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010273533.9A CN102383397B (en) | 2010-09-06 | 2010-09-06 | Underwater suspended and drifted plugging construction method for high heads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102383397A CN102383397A (en) | 2012-03-21 |
| CN102383397B true CN102383397B (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010273533.9A Active CN102383397B (en) | 2010-09-06 | 2010-09-06 | Underwater suspended and drifted plugging construction method for high heads |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106592534A (en) * | 2017-01-17 | 2017-04-26 | 叶莉莉 | Small piping cramming device |
| CN109440744B (en) * | 2018-12-24 | 2023-12-19 | 中国三峡建工(集团)有限公司 | Quick and safe temporary plugging structure and method for self-stabilizing diversion tunnel |
| CN114808852B (en) * | 2022-05-20 | 2024-03-29 | 中水北方勘测设计研究有限责任公司 | Inlet plugging device for tunnel overhaul |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344433Y (en) * | 1998-09-25 | 1999-10-20 | 尹学军 | Air bag for blocking leakage |
| CN2434338Y (en) * | 1999-10-17 | 2001-06-13 | 董禹全 | Dam bag |
| CN2561819Y (en) * | 2002-07-26 | 2003-07-23 | 王涛 | Self leakage positioning stopper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02108708A (en) * | 1988-10-14 | 1990-04-20 | Shiyarumu Corp:Kk | Water cut-off execution |
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2010
- 2010-09-06 CN CN201010273533.9A patent/CN102383397B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344433Y (en) * | 1998-09-25 | 1999-10-20 | 尹学军 | Air bag for blocking leakage |
| CN2434338Y (en) * | 1999-10-17 | 2001-06-13 | 董禹全 | Dam bag |
| CN2561819Y (en) * | 2002-07-26 | 2003-07-23 | 王涛 | Self leakage positioning stopper |
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| CN102383397A (en) | 2012-03-21 |
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Owner name: CHINA ELECTRIC POWER CONSTRUCTION BUILDING GROUP C Free format text: FORMER NAME: SINOHYDRO BUREAU 2 CO., LTD.;LI HONG;HAN YUE |
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| CP01 | Change in the name or title of a patent holder |
Address after: 100120, Beijing, Xicheng District six paved south side street, No. 1 Patentee after: Middle electricity building Group Co., Ltd Address before: 100120, Beijing, Xicheng District six paved south side street, No. 1 Patentee before: Sinohydro Bureau 2 Co., Ltd. |