CN114775535B - Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof - Google Patents
Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof Download PDFInfo
- Publication number
- CN114775535B CN114775535B CN202210683568.2A CN202210683568A CN114775535B CN 114775535 B CN114775535 B CN 114775535B CN 202210683568 A CN202210683568 A CN 202210683568A CN 114775535 B CN114775535 B CN 114775535B
- Authority
- CN
- China
- Prior art keywords
- dam
- geomembrane
- water
- wave
- storage tank
- 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.)
- Active
Links
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
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
- E02B3/122—Flexible prefabricated covering elements, e.g. mats, strips
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
-
- 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
Abstract
The invention provides a protection device for preventing an earth-rock dam from overtopping and breaking and a using method thereof, wherein a wave-blocking wall is arranged at the dam crest, a geomembrane roll is arranged on a downstream dam slope, and one end of the geomembrane roll is fixed at the dam crest; the wave blocking wall is connected with a water storage tank in a sliding mode, the side wall of the water storage tank is connected with a boss, the dam crest is connected with an upright post, the upright post is connected with the boss in a sliding mode, and a spring is sleeved on the upright post; a rain shade is arranged above the water storage tank; the wave-blocking wall is provided with water through holes; a supporting rod is arranged at the top of the dam crest, a pulley is arranged at the top of the supporting rod, a rope is hung on the pulley, and one end of the rope is connected with the boss; a slot is formed in the downstream dam slope, a bearing plate is arranged on one side of the geomembrane roll, and the bottom end of the bearing plate is inserted into the slot; the other end of the rope is connected to the top of the bearing plate; one side of carrier plate is provided with the extrusion head, and when the carrier plate shifts up, the extrusion head extrudees the geomembrane book and drives the geomembrane book and move. The invention is simple, effective, stable and reliable, and can effectively prevent the overtopping and scouring of the earth-rock dam.
Description
Technical Field
The invention belongs to the technical field of hydraulic engineering, and particularly relates to a protection device for preventing an earth-rock dam from overtopping and breaking and a using method thereof.
Background
The reservoir is an important component of a comprehensive flood control engineering system, the dam break event of the reservoir sometimes occurs, most of the dam break reservoir is an earth dam and earth-rock mixed dam, and once the reservoir consisting of the earth-rock dam breaks down, the damage influence caused by the dam break is immeasurable. For effective measures for preventing overtopping scouring of the earth and rockfill dam, the overtopping scouring is prevented by automatically paving a geomembrane, for example, a buoyancy type geomembrane device for preventing the overtopping dam break disclosed in the invention patent with the publication number of CN 110761243B is researched domestically, and the device can automatically expand the geomembrane to protect the downstream surface from being scoured when overtopping occurs by utilizing buoyancy, but the device has the following problems: (1) the PVC pipes penetrate through the dam body, and during construction, the PVC pipes need to be dug and laid, so that the engineering quantity is large, and time and labor are wasted; (2) the support plate and the geomembrane are supported by the support, the support is supported between the surface of the support plate and the downstream surface, the length of the corrosion-resistant metal wire is adjusted to ensure that the support on the downstream surface just supports the support plate and the geomembrane roll, and the ideal state is difficult to maintain stably all the time because the support is not provided with a fixing device, and if the external factors of the support plate and the support which are touched carelessly by manual misoperation or are damaged intentionally by people or encounter severe weather such as strong wind and heavy rain are considered, the ideal state of just supporting can be broken, so that the geomembrane is laid and pasted by mistake; (3) because the metal wires are pulled by the upward floating of the floating balls, the automatic paving of the geomembrane is realized, but the condition needs to be considered, if the water level of the reservoir is within a normal range and far less than the height of the water inlet holes in the side surfaces of the rectangular grooves, when the reservoir is in a rainy day, rainwater enters the rectangular grooves through the water inlet holes, so that the floating balls float upwards, and the condition that the geomembrane roll is mistakenly paved is caused; (4) the wave blocking wall adopts a vertical wall body structure, the structure collides with waves at the front side, very high waves are often splashed, and the waves can enter the rectangular groove through the water inlet hole to cause the floating ball to rise, so that the geomembrane roll is mistakenly paved; (5) when the geomembrane roll is not laid, the geomembrane roll is exposed outside for a long time, and the geomembrane roll is aged due to wind, blowing and sun exposure, so that subsequent normal use is easily influenced; (6) overtopping flood flows down from a high position over the wave-retaining wall, directly scours the dam crest and is not beneficial to the protection of the dam crest.
In summary, the above-mentioned device has some disadvantages in practical application, so it is necessary to develop a simple, effective, stable and reliable protection device for preventing the overtopping and scouring of the earth and rockfill dam.
Disclosure of Invention
In order to solve the problems in the prior art, the protection device for preventing the overtopping and dam break of the earth-rock dam and the using method thereof are provided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the technical scheme provides a protection device for preventing an earth-rock dam from overtopping and breaking, wherein a wave blocking wall is arranged at the top of a dam crest, a geomembrane roll is arranged on a downstream dam slope of a dam body, and one end of the geomembrane roll is fixed at the dam crest; the water storage tank is connected to the back water surface of the wave blocking wall in a sliding mode, a boss is connected to the side wall of the water storage tank, an upright post is connected to the top of the dam crest and is connected with the boss in a sliding mode, a spring is sleeved on the upright post, the top of the spring is connected with the boss, and the bottom of the spring is connected with the upright post; a rain shade is arranged above the water storage tank and connected with the wave blocking wall; the wave blocking wall is provided with water through holes, and the water through holes are arranged above the water storage tank;
a supporting rod is arranged at the top of the dam crest, a wheel carrier is arranged at the top of the supporting rod, a pulley is connected onto the wheel carrier, a rope is hung on the pulley, and one end of the rope is connected with the boss; a slot is formed in the downstream dam slope, a bearing plate used for limiting the geomembrane roll is arranged on one side of the geomembrane roll, and the bottom end of the bearing plate is inserted into the slot; the other end of the rope is connected to the top of the carrier plate.
The upstream surface of the wave wall is also provided with a wave-proof plate; the water holes are arranged above the connection part of the wave-proof plate and the wave-blocking wall.
The water through holes are obliquely arranged; the water holes are arranged upwards in an inclined manner from the upstream surface of the wave-blocking wall to the downstream surface of the wave-blocking wall.
One end of the geomembrane roll extends to the wave blocking wall from the dam crest, a protective layer is arranged at the top of the dam crest, and one end of the geomembrane roll is pressed below the protective layer.
The bottom of the water storage tank is connected with a drain valve.
And a protective shell is arranged above the geomembrane, and the bottom end of the protective shell is connected to the top of the dam crest.
And a height difference is formed between the top of the protective shell and the dam crest, and a plunge pool is formed between the protective shell and the wave blocking wall.
And an extrusion head is arranged on one side of the bearing plate, and when the bearing plate moves upwards, the extrusion head extrudes the geomembrane roll and drives the geomembrane roll to move.
A sliding groove is formed in the back water surface of the wave-blocking wall, a sliding block is inserted into the sliding groove in a sliding mode, and the sliding groove is in a dovetail groove shape or a T-shaped groove shape; the sliding block is connected with the water storage tank.
The protective shell is provided with a plurality of overflow holes arranged at intervals.
The invention also provides a use method of the protection device for preventing the overtopping and dam break of the earth and rockfill dam, which comprises the following steps:
when the device is used, the bearing plate is inserted into the slot, an included angle area is formed between the downstream dam slope and the bearing plate, the geomembrane roll is placed in the included angle area, the extrusion head is positioned below the geomembrane roll, and the geomembrane roll is pressed to the side face of the bearing plate;
when the water level reaches the position of the water through hole, water flow continuously flows into the water storage tank through the water through hole, accumulated water in the water storage tank becomes more, the water storage tank moves downwards and compresses the spring, the rope is driven to move through the boss, when the rope moves, the bearing plate is lifted upwards through the guide of the pulley, the bearing plate is driven to move upwards, and acting force is generated between the extrusion head and the geomembrane;
along with the carrier plate bottom deviate from the slot gradually, the extrusion head slides on along the geomembrane book surface, when the carrier plate bottom does not receive the spacing of slot, the geomembrane book can knock off the carrier plate, and the carrier plate swings, and the geomembrane book is automatic to be expanded and is spread on downstream dam slope.
In the above method, the more specific process is as follows:
when the device is used, after the bearing plate is inserted into the slot, an included angle area is formed between the downstream dam slope and the bearing plate, the geomembrane roll is placed in the included angle area, the extrusion head is positioned below the geomembrane roll, and the geomembrane roll is pressed to the side face of the bearing plate under the action of self weight; when the water level reaches the position of the water passing hole, water flow continuously flows into the water storage tank through the water passing hole, accumulated water in the water storage tank becomes more, the water storage tank moves downwards and compresses the spring, the rope is driven to move through the boss, the bearing plate is lifted upwards through the guide of the pulley when the rope moves, the bearing plate is driven to move upwards, when the bearing plate moves upwards, the extrusion head can only vertically upwards due to the guiding effect of the slot, the extrusion head generates an oblique acting force on the geomembrane roll, and similarly, the geomembrane roll generates a reacting force on the extrusion head; the bottom end of the bearing plate gradually comes out of the slot, the extrusion head slides along the surface of the geomembrane roll, when the bottom end of the bearing plate is not limited by the slot, the geomembrane roll can knock off the bearing plate, the bearing plate swings, the limit of the bearing plate on the geomembrane is released, and the geomembrane roll automatically unfolds and spreads on a downstream dam slope;
when meeting rainy day, because the top of aqua storage tank has the rain shade, the rainwater can not fall into the aqua storage tank in, the whole weight of aqua storage tank is unchangeable, so the aqua storage tank can not move down, and the geomembrane book can't expand voluntarily, maintains the rolling state.
Compared with the prior art, the invention has the following advantages:
1. the geomembrane roll is driven to automatically expand in a linkage manner by changing the weight, when the geomembrane roll is used, flood reserved from a water through hole is received by the water storage tank, the water storage tank compresses the spring and continuously moves downwards along with the increasing volume of water in the water storage tank, the downward movement of the water storage tank drives the bearing plate to lift through the linkage of the rope, so that the bearing plate can be pulled out from the slot, and after the bearing plate is pulled out, the geomembrane roll can automatically roll down to complete automatic spreading and protect a downstream dam slope; in addition, when the mode is adopted, the rain shade is arranged above the water storage tank in a matched mode, so that rainwater can be effectively prevented from entering the water storage tank, the influence of rain is eliminated, and the problem that the geomembrane roll is unfolded mistakenly due to rain accumulation in the water storage tank is solved; in addition, the rope is arranged above the dam top instead of penetrating through the dam body, so that trenching, pre-embedding and other work are not needed, the original dam body is prevented from being damaged, the workload is reduced, and the time and the labor are saved.
2. Because the carrier plate adopts the mode of inserting the establishment, need not the support and additionally supports, its stability is high, is difficult for receiving adverse factor's such as bad weather such as strong wind and storm and artificial maloperation influence, as long as do not artificially deliberately extract the carrier plate from the slot in, the carrier plate just can be fine play the fender that rolls up the geomembrane and prop limiting displacement.
3. One end of the geomembrane roll extends to the wave blocking wall from the dam crest, the top of the dam crest is provided with a protective layer, one end of the geomembrane roll is pressed and held below the protective layer, the protective layer can play two roles, one is to press and hold one end of the fixed geomembrane roll, and the other is to protect the part of the dam crest from being washed away.
4. The water hole slope sets up, such a mode of setting up can eliminate the influence of unrestrained flower, because wave and fender wave wall produce the head-on collision, can splash very high unrestrained flower often, the unrestrained flower can get into through in the water hole, but because the water hole is the slope setting, the unrestrained flower can consume kinetic energy in crossing the water hole, and flow back to the reservoir in, just so can avoid the unrestrained flower to flow into in the aqua storage tank through crossing the water hole and cause the aqua storage tank weight gain, and make the geomembrane book mistake expand, still can dispose the wave breaker simultaneously in addition, the wave breaker can play fine unrestrained effect, further reduce the possibility that the unrestrained flower enters into the aqua storage tank through the water hole.
5. The protective casing arranged in the geomembrane roll protective device can play two roles, wherein the protective casing and the bearing plate form a relatively closed environment, so that a geomembrane roll can be protected, wind and sun can be avoided as much as possible, the aging speed is reduced, and the service life is prolonged; secondly, a height difference exists between the top of the protective shell and the dam crest, so that a plunge pool is formed between the protective shell and the wave-blocking wall, the plunge pool can protect a protective layer at the top of the dam crest, overtopping flood water flows down from a high position over the wave-blocking wall during overtopping, large scouring force is caused on the dam crest, loss of the protective layer is large, and due to the fact that the plunge pool is formed, the overtopping flood water falls onto the water surface of the plunge pool, scouring on the protective layer of the dam crest can be reduced, and a good protective effect is achieved.
6. One side at the carrier plate in this device is provided with the extrusion head, and the structure is ingenious, reasonable in design, and big problem is solved to the small-cost, effectively prevents artificial destruction, and the practicality is strong.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged schematic view of the present invention.
Fig. 3 is a top view of the slider engaged with the runner.
FIG. 4 is a right side view of the reservoir, post and spring combination.
Fig. 5 is an enlarged view of the mating detail of the carrier plate, the protective hull, and the geomembrane roll structure.
Figure 6 is a schematic view of the carrier plate being pulled up (the extrusion head squeezing the roll of geomembrane).
Fig. 7 is a schematic view of the carrier plate being lifted upward (after the geomembrane roll has been knocked off the carrier plate).
Fig. 8 is a cross-sectional view of a guard housing overflow aperture.
Description of reference numerals:
1, a dam body; 2, a wave wall; 3 downstream dam slope; 4, a wave-proof plate; 5, water passing holes; 6, a rain cover; 7 a water storage tank; 8, a drain valve; 9, a sliding block; 10 upright posts; 11, a boss; 12 springs; 13 a spring seat; 14 a protective layer; 15, rolling the geomembrane; 16 a protective housing; 161 overflow holes; 17 a carrier plate; 18 an extrusion head; 19, channel steel; 20 ropes; 21 supporting rods; 22 a wheel frame; 23 chute.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Example one
As shown in fig. 1-8, the present embodiment provides a protection device for preventing an earth-rock dam from breaking due to overtopping, wherein a dam body 1 includes a dam crest, an upstream dam slope and a downstream dam slope 3, a wave wall 2 is arranged at the top of the dam crest, a geomembrane roll 15 is arranged on the downstream dam slope 3 of the dam body 1, and one end of the geomembrane roll 15 is fixed at the dam crest; the water storage tank 7 is connected to the back surface of the wave wall 2 in a sliding manner, specifically, a sliding groove 23 is formed in the back surface of the wave wall 2, as shown in fig. 4, a sliding block 9 is inserted into the sliding groove 23 in a sliding manner, the sliding groove 23 can be a dovetail groove or a T-shaped groove, and a dovetail groove is preferred in the embodiment; the slide block 9 is connected with the water storage tank 7; the side wall of the water storage tank 7 is connected with a boss 11, the top of the dam crest is connected with an upright post 10, the upright post 10 is connected with the boss 11 in a sliding manner, specifically, a sliding hole is formed in the boss 11, the upright post 10 freely penetrates through the sliding hole, and the boss 11 can move up and down along the upright post 10; the cover is equipped with spring 12 on the stand 10, and spring 12 top links to each other with boss 11, and spring 12 bottom links to each other with stand 10, and for the convenience of the connection of spring 12, the cover is equipped with spring holder 13 on stand 10, and spring 12's bottom is connected in spring holder 13 upper surface.
A rain shade 6 is arranged above the water storage tank 7, and the top of the rain shade 6 can be slightly inclined, so that rainwater can flow down quickly; the rain shade 6 is connected with the wave wall 2.
The wave-blocking wall 2 is provided with a water through hole 5, and the position of the water through hole 5 is arranged above the water storage tank 7; the top of the water storage tank 7 can be connected with a water inlet hopper, the water inlet hopper is close to the wave blocking wall 2, and when water flows through the water holes 5, the water can conveniently enter the water storage tank 7.
A supporting rod 21 is arranged at the top of the dam crest, a wheel carrier 22 is arranged at the top of the supporting rod 21, a pulley is connected on the wheel carrier 22, a rope 20 is hung on the pulley, and one end of the rope 20 is connected with the boss 11; a slot is formed in the downstream dam slope 3, a bearing plate 17 used for limiting the geomembrane roll 15 is arranged on one side of the geomembrane roll 15, and the bottom end of the bearing plate 17 is inserted into the slot; the other end of the cable 20 is connected to the top of the carrier plate 17.
In order to ensure the stable insertion of the carrier plate 17, a U-shaped channel 19 may be inserted into the slot.
Because the carrier plate 17 adopts to insert the mode of establishing, need not the support and additionally supports, its stability is high, is difficult for receiving adverse factor's such as severe weather and artificial maloperation such as strong wind and storm, as long as do not artificially extract carrier plate 17 from the slot, carrier plate 17 just can be fine play and roll up 15 fender of effect to the geomembrane.
In order to protect the dam crest, one end of the geomembrane roll 15 extends to the wave-blocking wall 2 from the dam crest, the top of the dam crest is provided with a protective layer 14, one end of the geomembrane roll 15 is pressed and held below the protective layer 14, the protective layer 14 can be a concrete protective layer, the protective layer 14 can play two roles, one is to press and hold one end of the fixed geomembrane roll 15, and the other is to protect the part of the dam crest from being washed away.
The bottom of the water storage tank 7 is connected with a drain valve, so that accumulated water in the water storage tank 7 can be drained conveniently, and the water storage tank 7 can move upwards to recover to the original state conveniently.
The working principle of the device is as follows:
when in use, the bottom end of the bearing plate 17 is inserted into the slot, and the stability of the bearing plate 17 can be ensured due to the limit of the slot; when the water level reached water hole 5 position, rivers constantly flowed in aqua storage tank 7 through water hole 5, ponding in the aqua storage tank 7 becomes more, aqua storage tank 7 moves down and compression spring 12, and then drive rope 20 through boss 11 and remove, when rope 20 removed, can upwards carry out the pulling bearing plate 17 through the direction of pulley, the bearing plate 17 bottom is deviate from the slot gradually, when the bearing plate 17 bottom is not limited by the slot, geomembrane book 15 can knock off bearing plate 17, the bearing plate 17 swings, the spacing of bearing plate 17 to the geomembrane is relieved, geomembrane book 15 expandes automatically and spreads on downstream dam slope, protection downstream slope dam 3 is not washd, the washing damage that the dam body 1 received has significantly reduced, reduce the possibility of dam break, prolong small-size earth-rock dam life.
The setting of crossing water hole 5 can play the effect of prevention in advance, crosses water hole 5 and sets up in the position that is close to 2 tops of wave wall, will cross before the overtopping soon, through crossing water hole 5, plays cloth prevention effect in advance, prevents that the geomembrane book from expanding untimely problem.
It should be noted that, in rainy days, the rain shade 6 is arranged above the water storage tank 7, so that rainwater cannot fall into the water storage tank 7, the whole weight of the water storage tank 7 is unchanged, the water storage tank 7 cannot move downwards, the geomembrane roll 15 cannot be automatically unfolded, and the rolling state is maintained. The setting of the rain shade 6 can effectively solve the problem of misoperation caused by factors such as rain and the like in the prior art.
In addition, in the application, the rope 20 is arranged above the dam crest instead of penetrating through the dam body 1, so that the work of ditching, pre-embedding and the like is not needed, the original dam body 1 is prevented from being damaged, the workload is reduced, and the time and the labor are saved.
Example two
With continued reference to fig. 1-8, on the basis of the first embodiment, the water through holes 5 may be disposed in an inclined manner, and the water through holes 5 are disposed in an inclined manner from the upstream side of the wave-blocking wall 2 to the downstream side of the wave-blocking wall 2. Such setting mode is for eliminating the influence of unrestrained flower, because wave and 2 production frontal impacts of wave wall, often can splash very high unrestrained flower, and the unrestrained flower probably gets into in water hole 5, but because crossing water hole 5 and being the slope setting, the unrestrained flower can consume kinetic energy in crossing water hole 5 to flow back to the reservoir in, just so can avoid the unrestrained flower to lead to the fact 7 weight gains of aqua storage tank in water storage tank 7 to flow into through water hole 5, and make the geomembrane roll up 15 mistake expandes.
EXAMPLE III
As another preferred technical solution, in order to better eliminate the influence of the wave, on the basis of the second embodiment, a wave guard plate may be further disposed on the upstream surface of the wave wall 2, and the wave guard plate has an arc-shaped structure with a concave surface facing the water surface; the water through holes 5 are arranged above the connection part of the wave-proof plate and the wave-blocking wall 2; the wave-proof plate can play a good wave-eliminating role, and further reduces the possibility that the spray enters the water storage tank 7 through the water holes 5.
Example four
With continued reference to fig. 1-8, as another preferred solution, on the basis of the above embodiment, a protective casing 16 is disposed above the geomembrane, and the bottom end of the protective casing 16 is connected to the top of the dam top. The end part of the protective casing 16 is close to the bearing plate 17, the protective casing 16 and the bearing plate 17 form a relatively closed environment, the geomembrane roll 15 can be protected, the geomembrane roll is prevented from being blown by wind and being exposed to the sun as much as possible, the aging speed is reduced, and the service life is prolonged.
It should be noted that, a height difference exists between the top of the protective housing 16 and the dam crest, and the protective housing 16 is integrally in a structure similar to a Z shape, so that a plunge pool is formed between the protective housing 16 and the wave blocking wall 2, the plunge pool can protect the protective layer 14 at the top of the dam crest, and during overtopping, overtopping flood flows down from a high position over the wave blocking wall 2 to generate a large scouring force on the dam crest, and the scouring of the protective layer 14 is large, and due to the formation of the plunge pool, the overtopping flood falls down on the water surface of the plunge pool, so that the scouring of the protective layer 14 at the dam crest can be reduced, and a good protective effect is achieved.
The protective casing 16 is provided with a plurality of overflow holes 161 arranged at intervals, and the arrangement of the overflow holes 161 is to ensure that accumulated water at the pond can be conveniently discharged. Since the aperture ratio of the overflow holes 161 is small, the flood over the roof flows into the area between the wave wall 2 and the protective case 16, and the water displacement is much smaller than the water inflow, and a plunge pool is formed quickly.
EXAMPLE five
With continued reference to fig. 1-8, to prevent intentional vandalism by pulling the carrier plate 17 intentionally out of the slot, the inventor intentionally provided a squeeze head 18 on one side of the carrier plate 17; when the bearing plate 17 moves upwards, the extrusion head 18 extrudes the geomembrane roll 15 and drives the geomembrane roll 15 to move.
The invention also provides a use method of the protection device for preventing the overtopping and dam break of the earth and rockfill dam, which comprises the following steps:
when the geomembrane roll is used, after the bearing plate 17 is inserted into the slot, an included angle area is formed between the downstream dam slope and the bearing plate 17, the geomembrane roll 15 is placed in the included angle area, the extrusion head 18 is positioned below the geomembrane roll 15, and the geomembrane roll 15 is pressed to the side face of the bearing plate 17 under the self-weight action; when the water level reaches the position of the water through hole 5, water flow continuously flows into the water storage tank 7 through the water through hole 5, accumulated water in the water storage tank 7 becomes more, the water storage tank 7 moves downwards and compresses the spring 12, and then the rope 20 is driven to move through the boss 11, when the rope 20 moves, the bearing plate 17 is lifted upwards through the guide of the pulley to drive the bearing plate 17 to move upwards, when the bearing plate 17 moves upwards, the extrusion head 18 only can vertically move upwards due to the guide effect of the slot, the extrusion head 18 generates an oblique acting force on the geomembrane roll 15, and similarly, the geomembrane roll 15 generates a reaction force on the extrusion head 18; as the bottom end of the bearing plate 17 gradually comes out of the slot, the extrusion head 18 slides upwards along the surface of the geomembrane roll 15, when the bottom end of the bearing plate 17 is not limited by the slot, the geomembrane roll 15 can knock the bearing plate 17, the bearing plate 17 swings, the limitation of the bearing plate 17 to the geomembrane is released, and the geomembrane roll 15 automatically unfolds and spreads on the downstream dam slope 3.
The following is explained in detail:
referring to fig. 6-7 in the specific use process, after the bearing plate 17 is inserted into the slot, an included angle area is formed between the downstream dam slope and the bearing plate 17, the geomembrane roll 15 is placed in the included angle area, and the geomembrane roll 15 is pressed to the side face of the bearing plate 17 under the action of self weight; because the extrusion head 18 is arranged below the geomembrane, if the bearing plate 17 is pulled out of the slot, the obstruction of the extrusion head 18 must be overcome, and because the geomembrane roll 15 is heavy, the bearing plate 17 is difficult to pull by manpower alone, the bearing plate 17 is difficult to pull out, and the self weight of the geomembrane roll 15 can play a good role in protection, so that the geomembrane roll can be prevented from being damaged maliciously by people; when the water in the water storage tank 7 is enough, the bearing plate 17 can be driven to move upwards by depending on the whole weight of the water storage tank 7, when the bearing plate 17 moves upwards, the extrusion head 18 can only vertically move upwards due to the guiding function of the slot, the extrusion head 18 generates an oblique acting force on the geomembrane roll 15, so that the geomembrane roll 15 can move towards the direction close to the protective shell 16, and the extrusion head 18 can slide upwards along the surface of the geomembrane roll 15; similarly, the geomembrane roll 15 generates a reaction force to the extrusion head; because the low reaches dam slope 3 is the slope setting, so the top both sides of slot are the difference of height, and the one side peak of height is marked as A point, and the short one side peak is marked as B point, and when the bottom of carrier plate 17 removed to B some position, geomembrane book 15 had a decurrent effort under the dead weight effect, and carrier plate 17 can strike carrier plate 17 rapidly under the reaction force effect this moment, backs off carrier plate 17, and geomembrane book 15 rolls down along low reaches dam slope 3 under the action of gravity to accomplish automatic the spreading. This structure is ingenious, reasonable in design, and big problem is solved to the small-cost, prevents effectively that the people from destroying, and the practicality is strong.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A protection device for preventing an earth-rock dam from overtopping and breaking is characterized in that a wave-blocking wall is arranged at the top of a dam crest, a geomembrane roll is arranged on a downstream dam slope of a dam body, and one end of the geomembrane roll is fixed at the dam crest; the dam is characterized in that a water storage tank is connected to the back surface of the wave-blocking wall in a sliding mode, a boss is connected to the side wall of the water storage tank, an upright post is connected to the top of the dam crest and is connected with the boss in a sliding mode, a spring is sleeved on the upright post, the top of the spring is connected with the boss, and the bottom of the spring is connected with the upright post; a rain shade is arranged above the water storage tank and connected with the wave blocking wall; the wave blocking wall is provided with water through holes, and the water through holes are arranged above the water storage tank;
a supporting rod is arranged at the top of the dam crest, a wheel carrier is arranged at the top of the supporting rod, a pulley is connected onto the wheel carrier, a rope is hung on the pulley, and one end of the rope is connected with the boss; a slot is formed in the downstream dam slope, a bearing plate used for limiting the geomembrane roll is arranged on one side of the geomembrane roll, and the bottom end of the bearing plate is inserted into the slot; the other end of the rope is connected to the top of the bearing plate;
one side of carrier plate is provided with the extrusion head, and when the carrier plate shifts up, the extrusion head extrudees the geomembrane book and drives the geomembrane book and move.
2. The device for preventing the overtopping and dam break of the earth and rockfill dam as claimed in claim 1, wherein the upstream surface of the wave wall is further provided with a wave-proof plate; the water holes are arranged above the connection part of the wave-proof plate and the wave-blocking wall.
3. The device for protecting the earth-rock dam from overtopping and breaking as claimed in claim 1, wherein the water through holes are obliquely arranged; the water holes are arranged upwards in an inclined manner from the upstream surface of the wave-blocking wall to the downstream surface of the wave-blocking wall.
4. The device for preventing the overtopping and dam break of the earth and rock dam as claimed in claim 1, wherein one end of the geomembrane roll extends from the dam crest to the wave-blocking wall, a protective layer is arranged on the top of the dam crest, and one end of the geomembrane roll is pressed and held below the protective layer.
5. The device for protecting an earth and rockfill dam against overtopping and dam break as claimed in claim 1, wherein a protective casing is disposed above said geomembrane, and a bottom end of said protective casing is connected to a top of said dam crest.
6. The protection device for preventing the overtopping and dam breaking of the earth and rockfill dam as claimed in claim 1, wherein a sliding groove is formed in the back water surface of the wave-blocking wall, a sliding block is slidably inserted into the sliding groove, and the sliding groove is in a dovetail groove or a T-shaped groove; the sliding block is connected with the water storage tank.
7. The device as claimed in claim 5, wherein the protective casing is provided with a plurality of overflow holes arranged at intervals.
8. The use method of the protection device for preventing the overtopping and dam break of the earth and rockfill dam as claimed in any one of claims 1 to 7, comprising the following steps:
when the device is used, the bearing plate is inserted into the slot, an included angle area is formed between the downstream dam slope and the bearing plate, the geomembrane roll is placed in the included angle area, the extrusion head is positioned below the geomembrane roll, and the geomembrane roll is pressed to the side face of the bearing plate;
when the water level reaches the position of the water through hole, water flow continuously flows into the water storage tank through the water through hole, accumulated water in the water storage tank becomes more, the water storage tank moves downwards and compresses the spring, the rope is driven to move through the boss, when the rope moves, the bearing plate is lifted upwards through the guide of the pulley, the bearing plate is driven to move upwards, and acting force is generated between the extrusion head and the geomembrane;
along with the carrier plate bottom deviate from the slot gradually, the extrusion head slides on along the geomembrane book surface, when the carrier plate bottom does not receive the spacing of slot, the geomembrane book can knock off the carrier plate, and the carrier plate swings, and the geomembrane book is automatic to be expanded and is spread on downstream dam slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210683568.2A CN114775535B (en) | 2022-06-17 | 2022-06-17 | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210683568.2A CN114775535B (en) | 2022-06-17 | 2022-06-17 | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114775535A CN114775535A (en) | 2022-07-22 |
| CN114775535B true CN114775535B (en) | 2022-08-26 |
Family
ID=82421601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210683568.2A Active CN114775535B (en) | 2022-06-17 | 2022-06-17 | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114775535B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020022446A (en) * | 2000-09-20 | 2002-03-27 | 신훈 | Repairing method of earth-fill dam |
| CN110761243A (en) * | 2019-10-18 | 2020-02-07 | 河海大学 | Buoyancy type geomembrane device for preventing dam breaking due to overtopping |
| CN110777731A (en) * | 2019-10-18 | 2020-02-11 | 河海大学 | Composite geomembrane structure for emergency rescue of piping of earth and rockfill dam |
| CN211142975U (en) * | 2019-10-18 | 2020-07-31 | 河海大学 | Door opening type geomembrane device for preventing dam break |
| CN111809561A (en) * | 2020-06-15 | 2020-10-23 | 河海大学 | Method for preventing overtopping and dam break of earth dam |
| CN216640442U (en) * | 2021-11-29 | 2022-05-31 | 南京扬安智能科技有限公司 | Portable earth dam safety protection structure |
-
2022
- 2022-06-17 CN CN202210683568.2A patent/CN114775535B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020022446A (en) * | 2000-09-20 | 2002-03-27 | 신훈 | Repairing method of earth-fill dam |
| CN110761243A (en) * | 2019-10-18 | 2020-02-07 | 河海大学 | Buoyancy type geomembrane device for preventing dam breaking due to overtopping |
| CN110777731A (en) * | 2019-10-18 | 2020-02-11 | 河海大学 | Composite geomembrane structure for emergency rescue of piping of earth and rockfill dam |
| CN211142975U (en) * | 2019-10-18 | 2020-07-31 | 河海大学 | Door opening type geomembrane device for preventing dam break |
| CN111809561A (en) * | 2020-06-15 | 2020-10-23 | 河海大学 | Method for preventing overtopping and dam break of earth dam |
| CN216640442U (en) * | 2021-11-29 | 2022-05-31 | 南京扬安智能科技有限公司 | Portable earth dam safety protection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114775535A (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3748085A1 (en) | Flood barrier | |
| OA11407A (en) | Protective elements, devices comprising said elements and method for protecting a zone against floods and avalanches. | |
| CN110761243A (en) | Buoyancy type geomembrane device for preventing dam breaking due to overtopping | |
| CN111236275B (en) | Fish scale pit and catch basin comprehensive runoff retaining system and construction method thereof | |
| CN114622520B (en) | Ecological slope protection structure of hydraulic engineering river course | |
| CN114775535B (en) | Protection device for preventing overtopping and dam break of earth and rockfill dam and using method thereof | |
| CN115059078A (en) | Geomembrane self-spreading device for preventing overtopping dam break and using method thereof | |
| CN212270867U (en) | Vertical seam type fishway suitable for emergency flood discharge | |
| CN219343027U (en) | Protection device for preventing earth-rock dam from overtopping and breaking | |
| CN210562017U (en) | Mud-rock flow flexible blocking net and mud-rock flow flexible blocking dam | |
| CN108505489B (en) | Protective dike and protection method thereof | |
| CN214363272U (en) | Water conservancy flood control dyke structure | |
| CN115095266A (en) | Waterproof device for automatic lifting of underground garage automobile ramp and using method | |
| CN214328741U (en) | Hydraulic engineering slope protection structure | |
| CN213682028U (en) | Combined energy dissipater of energy dissipation pier in diffusion type chute drop-expansion type underflow energy dissipation pool | |
| CN116145908B (en) | Roof water storage and drainage control device for urban waterlogging prevention | |
| CN208183767U (en) | A kind of soil erosion protecting and greening system | |
| CN209053075U (en) | A kind of drainage arrangement for land control | |
| CN219930855U (en) | Bank slope shore protection device | |
| CN213571988U (en) | Pile plate wall | |
| CN111119137A (en) | Method for manually regulating and controlling scouring of bottom plate of drainage groove of barrier lake and air bag cushion | |
| CN216110256U (en) | Metal flood control gate for urban flood control | |
| JP2004003238A (en) | Water gate for preventing high tide | |
| CN214089757U (en) | Reservoir spillway flood discharge safety protection net | |
| CN220117407U (en) | Small-size escape canal apron strutting arrangement of no reservation groove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |