CN110761243A - Buoyancy type geomembrane device for preventing dam breaking due to overtopping - Google Patents
Buoyancy type geomembrane device for preventing dam breaking due to overtopping Download PDFInfo
- Publication number
- CN110761243A CN110761243A CN201910991867.0A CN201910991867A CN110761243A CN 110761243 A CN110761243 A CN 110761243A CN 201910991867 A CN201910991867 A CN 201910991867A CN 110761243 A CN110761243 A CN 110761243A
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- CN
- China
- Prior art keywords
- dam
- side wall
- rectangular groove
- pvc pipe
- geomembrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000007797 corrosion Effects 0.000 claims abstract description 17
- 238000005260 corrosion Methods 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- 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
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
-
- 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
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/062—Constructions floating in operational condition, e.g. breakwaters or wave dissipating walls
-
- 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)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a buoyancy type geomembrane device for preventing a dam from being broken by overtopping, wherein a wave-blocking wall is arranged on the dam top on one side of the upstream surface, a rectangular groove is fixedly arranged on the side wall of the wave-blocking wall facing the water surface, the length direction of the rectangular groove is parallel to the height direction of the wave-blocking wall, a plurality of water inlet holes are formed in the side wall close to the top end of the rectangular groove, and a floating ball is arranged in the rectangular groove; the lower end of the floating ball is connected with one end of the corrosion-resistant metal wire, one end of the PVC pipe is fixedly connected to the bottom of the rectangular groove, the other end of the PVC pipe is located in the dam crest, the other end of the PVC pipe penetrates through the dam crest and extends out of the side wall of the lower downstream face of the dam crest, and the other end of the corrosion-resistant metal wire penetrates through the PVC pipe and extends out of the side wall of the lower downstream face of the dam crest and is connected with. The invention is arranged below the wave wall, and the geomembrane is automatically unfolded to protect the dam crest and the downstream surface from being washed when overtopping occurs, thereby greatly reducing the washing damage to the dam body, reducing the possibility of dam break and prolonging the service life of the small earth-rock dam.
Description
Technical Field
The invention relates to the technical field of geomembranes, in particular to a buoyancy type geomembrane device for preventing overtopping dam break.
Background
The reservoir is an important infrastructure of each country, and for China, the reservoir is an important component of each comprehensive flood control engineering system. Although dam engineering technology has been advancing over the past years since the first dam in our country was built, dam break events in reservoirs still occur every year. The vast majority of the dam break reservoir is an earth dam which accounts for 94.5% of the dam break, and if an earth-rock mixed dam with similar structural performance is added, the proportion is higher than 95.8%. Most reservoirs composed of earth and rockfill dams are located in remote hilly and mountainous areas and are near high, and water quantity of the reservoirs is suddenly discharged when the reservoirs break, so that downstream water level sudden rising and reservoir water level steep falling are caused. The dam break wave formed by the dam break can cause bank collapse and other loss in reservoir areas, and can cause disastrous effects in downstream areas of reservoirs.
In summary, the damage caused by dam break is immeasurable, and a large proportion of medium and small earth-rock dam break events are caused by overtopping. At present, most of domestic researches on effective measures for preventing the overtopping scouring of the earth and rockfill dam are only limited to the subsequent emergency treatment, and under the background, a simple, effective and reliable novel device for preventing the overtopping scouring of the earth and rockfill dam is necessary and has wide application prospect.
Disclosure of Invention
The invention aims to provide a buoyancy type geomembrane device for preventing a overtopping dam break.
The invention is realized by the following technical scheme:
a buoyancy type geomembrane device for preventing a dam from breaking through a flooded top is characterized in that a wave-blocking wall is arranged on the dam top on one side of the upstream face, a rectangular groove is fixedly arranged on the side wall of the wave-blocking wall facing the water, the length direction of the rectangular groove is parallel to the height direction of the wave-blocking wall, a plurality of water inlet holes are formed in the side wall close to the top end of the rectangular groove, and a floating ball is arranged in the rectangular groove;
bearing plates are arranged on the side wall of the downstream face of the dam and close to the dam crest, the length direction of the bearing plates is parallel to that of the dam crest, the bearing plates are supported on the side wall of the downstream face by a support, the bearing plates are obliquely arranged relative to the side wall of the downstream face, an acute included angle is formed between the bearing plates and the side wall of the downstream face, and a geomembrane roll is arranged between the bearing plates and the side wall of the downstream face;
the lower end of the floating ball is connected with one end of the corrosion-resistant metal wire, one end of the PVC pipe is fixedly connected to the bottom of the rectangular groove, the other end of the PVC pipe is located in the dam crest, the other end of the PVC pipe penetrates through the dam crest and extends out of the side wall of the lower downstream face of the dam crest, and the other end of the corrosion-resistant metal wire penetrates through the PVC pipe and extends out of the side wall of the lower downstream face of the dam crest and is connected with.
Further, one end of the geomembrane is pressed in the concrete pavement of the dam top. It acts as a fixation when it rolls along the downstream swimming surface.
Preferably, the inner diameter of the PVC pipe is equal to the outer diameter of the corrosion resistant wire. The PVC pipe is only enough to contain and pass through the corrosion-resistant metal wire.
Preferably, the distance between the top end of the wave wall and the top end of the rectangular groove is 50 cm.
Preferably, the water inlet holes on the rectangular grooves are circular holes.
The working principle is as follows: the upstream surface is provided with a rectangular groove 50cm below the wave wall, and the bottom surface of the rectangular groove is connected with the downstream surface through a PVC pipeline. The PVC pipe is almost sealed at both ends, leaving only a small hole enough for the corrosion resistant wire to be pulled freely. The downstream surface is fixed with the geomembrane through a bearing plate and a support, and one end of the geomembrane is pressed in the concrete pavement at the top of the dam. A buoyancy ball is mounted in the rectangular groove and is connected to the support of the downstream face by corrosion resistant wires which are located in the PVC pipe. When the upper reaches the rectangular channel side inlet opening height, during water can be followed the inlet opening and invaded the rectangular channel, made the water level in the rectangular channel rise, taut wire, reach certain degree after, the support is pulled down by the wire, the carrier plate then falls to the low reaches face, the automatic spreading of geomembrane book is spread on low reaches dam face.
Compared with the prior art, the invention has the beneficial effects that:
the invention is arranged below the wave wall, and the geomembrane is automatically unfolded to protect the dam crest and the downstream surface from being washed away when overtopping occurs, so that the washing damage to the dam body is greatly reduced, the possibility of dam break is reduced, and the service life of the small earth-rock dam is prolonged; the geomembrane has low manufacturing cost, good effect and convenient operation, the device taking the geomembrane as the material is suitable for the earth-rock dam with the wave wall and the concrete pavement on the dam crest, and after application and popularization, the problem of dam break of the earth-rock dam caused by overtopping in China can be solved.
Drawings
Fig. 1 is an overall structure of the present invention.
FIG. 2 partially shows the configuration of the carrier plate with the geomembrane roll;
FIG. 3 partially shows the structure of a rectangular slot;
figure 4 shows partially the structure of the PVC pipe.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in fig. 1-4, a buoyancy type geomembrane device for preventing a dam from being broken by overtopping is characterized in that a wave-blocking wall is arranged on the dam crest on one side of the upstream surface, a rectangular groove 7 is fixedly arranged on the side wall of the wave-blocking wall facing the water surface, the length direction of the rectangular groove is parallel to the height direction of the wave-blocking wall, a plurality of water inlet holes 8 are arranged on the side wall close to the top end of the rectangular groove, and a floating ball 4 is arranged in the rectangular groove;
a bearing plate 2 is arranged on the side wall of the downstream face of the dam and close to the dam top, the length direction of the bearing plate is parallel to the length direction of the dam top, the bearing plate is supported on the side wall of the downstream face by a support 3, the bearing plate is obliquely arranged relative to the side wall of the downstream face, an acute angle included angle is formed between the bearing plate and the side wall of the downstream face, a geomembrane roll 1 is placed between the bearing plate and the side wall of the downstream face, and one end of the geomembrane is pressed in a concrete pavement of;
the lower end of the floating ball is connected with one end of a corrosion-resistant metal wire 6, one end 5 of a PVC pipe is fixedly connected to the bottom of the rectangular groove, the other end of the PVC pipe is located in the dam crest, the other end of the PVC pipe penetrates through the dam crest and extends out of the side wall of the lower downstream face of the dam crest, and the other end of the corrosion-resistant metal wire 6 penetrates through the PVC pipe and extends out of the side wall of the lower downstream face of the dam crest and is connected with.
The inner diameter of the PVC pipe is equal to the outer diameter of the corrosion resistant wire 6, i.e. the PVC pipe is only sufficient to accommodate, pass through the corrosion resistant wire.
When the upstream water level is not raised to the rectangular groove, no water exists in the rectangular groove, the length of the corrosion-resistant metal wire is adjusted to enable the support on the downstream face to just support the bearing plate and the geomembrane roll, one end of the geomembrane is pressed in the concrete pavement on the top of the dam, and the support plays a role in fixing when rolling along the lower swimming face. When the upper reaches water level surpassed rectangular channel side inlet opening height, water was gone into through the inlet opening toward the rectangular channel in, and the water level constantly rises, and the floater floats for corrosion-resistant wire is strained, draws the support down, drives the carrier plate and falls to the downstream face, thereby makes the automatic downstream face that spreads of expansion of geomembrane book.
The non-illustrated parts referred to in the present invention are the same as or implemented by the prior art.
Claims (5)
1. The utility model provides a prevent dam is burst to overtopping formula geomembrane device, is provided with wave wall, characterized by on the dam crest of upstream face one side: a rectangular groove is fixedly arranged on the side wall of the wave-blocking wall facing the water surface, the length direction of the rectangular groove is parallel to the height direction of the wave-blocking wall, a plurality of water inlet holes are formed in the side wall close to the top end of the rectangular groove, and a floating ball is arranged in the rectangular groove;
bearing plates are arranged on the side wall of the downstream face of the dam and close to the dam crest, the length direction of the bearing plates is parallel to that of the dam crest, the bearing plates are supported on the side wall of the downstream face by a support, the bearing plates are obliquely arranged relative to the side wall of the downstream face, an acute included angle is formed between the bearing plates and the side wall of the downstream face, and a geomembrane roll is arranged between the bearing plates and the side wall of the downstream face;
the lower end of the floating ball is connected with one end of the corrosion-resistant metal wire, one end of the PVC pipe is fixedly connected to the bottom of the rectangular groove, the other end of the PVC pipe is located in the dam crest, the other end of the PVC pipe penetrates through the dam crest and extends out of the side wall of the lower downstream face of the dam crest, and the other end of the corrosion-resistant metal wire penetrates through the PVC pipe and extends out of the side wall of the lower downstream face of the dam crest and is connected with.
2. The buoyant geomembrane device for preventing the overtopping dam break as claimed in claim 1, wherein: one end of the geomembrane is pressed in the concrete pavement at the top of the dam.
3. The buoyant geomembrane device for preventing the overtopping dam break as claimed in claim 1, wherein: the inner diameter of the PVC pipe is equal to the outer diameter of the corrosion-resistant metal wire.
4. The buoyant geomembrane device for preventing the overtopping dam break as claimed in claim 1, wherein: the distance between the top end of the wave blocking wall and the top end of the rectangular groove is 50 cm.
5. The buoyant geomembrane device for preventing the overtopping dam break as claimed in claim 1, wherein: the water inlet hole on the rectangular groove is a circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910991867.0A CN110761243B (en) | 2019-10-18 | 2019-10-18 | Buoyancy type geomembrane device for preventing dam breaking due to overtopping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910991867.0A CN110761243B (en) | 2019-10-18 | 2019-10-18 | Buoyancy type geomembrane device for preventing dam breaking due to overtopping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110761243A true CN110761243A (en) | 2020-02-07 |
| CN110761243B CN110761243B (en) | 2021-02-26 |
Family
ID=69332692
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910991867.0A Expired - Fee Related CN110761243B (en) | 2019-10-18 | 2019-10-18 | Buoyancy type geomembrane device for preventing dam breaking due to overtopping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110761243B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809561A (en) * | 2020-06-15 | 2020-10-23 | 河海大学 | Method for preventing overtopping and dam break of earth dam |
| CN114293516A (en) * | 2022-02-24 | 2022-04-08 | 中水北方勘测设计研究有限责任公司 | Rapid solution method for preventing earth-rock dam overproof overtopping flood damage |
| CN114775535A (en) * | 2022-06-17 | 2022-07-22 | 山东省水利科学研究院 | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof |
| CN115059078A (en) * | 2022-05-19 | 2022-09-16 | 山东省水利科学研究院 | Geomembrane self-spreading device for preventing overtopping dam break and using method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2822858A1 (en) * | 2001-03-28 | 2002-10-04 | Jerome Regis Marie Sejournet | Emergency dyke for flood protection comprises inflated tubes held down by layers of sheet material and weighted lines in sleeves |
| CN101929141A (en) * | 2010-09-20 | 2010-12-29 | 水利部交通运输部国家能源局南京水利科学研究院 | Method and device for emergency repair of dam with overlength flood control tube bags in dangerous overflowing and violent-wave situation |
| CN203583436U (en) * | 2013-09-30 | 2014-05-07 | 河海大学 | Three-dimensional flexible vegetation protected slope for resisting overtopping and overflowing of embankment |
| CN110158546A (en) * | 2019-04-09 | 2019-08-23 | 中国水利水电科学研究院 | For earth and rockfill dam, the emergency safeguard structure and safeguard procedures of native bank of stone downstream slope |
-
2019
- 2019-10-18 CN CN201910991867.0A patent/CN110761243B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2822858A1 (en) * | 2001-03-28 | 2002-10-04 | Jerome Regis Marie Sejournet | Emergency dyke for flood protection comprises inflated tubes held down by layers of sheet material and weighted lines in sleeves |
| CN101929141A (en) * | 2010-09-20 | 2010-12-29 | 水利部交通运输部国家能源局南京水利科学研究院 | Method and device for emergency repair of dam with overlength flood control tube bags in dangerous overflowing and violent-wave situation |
| CN203583436U (en) * | 2013-09-30 | 2014-05-07 | 河海大学 | Three-dimensional flexible vegetation protected slope for resisting overtopping and overflowing of embankment |
| CN110158546A (en) * | 2019-04-09 | 2019-08-23 | 中国水利水电科学研究院 | For earth and rockfill dam, the emergency safeguard structure and safeguard procedures of native bank of stone downstream slope |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111809561A (en) * | 2020-06-15 | 2020-10-23 | 河海大学 | Method for preventing overtopping and dam break of earth dam |
| CN114293516A (en) * | 2022-02-24 | 2022-04-08 | 中水北方勘测设计研究有限责任公司 | Rapid solution method for preventing earth-rock dam overproof overtopping flood damage |
| CN114293516B (en) * | 2022-02-24 | 2023-09-29 | 中水北方勘测设计研究有限责任公司 | Rapid solving method for preventing earth and rockfill dam from exceeding standard and flooding |
| CN115059078A (en) * | 2022-05-19 | 2022-09-16 | 山东省水利科学研究院 | Geomembrane self-spreading device for preventing overtopping dam break and using method thereof |
| CN115059078B (en) * | 2022-05-19 | 2024-04-12 | 山东省水利科学研究院 | Geomembrane self-spreading device capable of preventing flood peak dam break and application method thereof |
| CN114775535A (en) * | 2022-06-17 | 2022-07-22 | 山东省水利科学研究院 | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof |
| CN114775535B (en) * | 2022-06-17 | 2022-08-26 | 山东省水利科学研究院 | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110761243B (en) | 2021-02-26 |
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