Novel overflow dam energy dissipation and scour prevention structure
By installing anti-scour devices on the upper side of the dam and energy dissipation devices on the lower side, and using water pressure gauges to monitor and control the water flow, the problems of cavitation and impact during flood discharge were solved, achieving effective energy dissipation and anti-scour effects.
Patent Information
- Application Number
- CN202520164319.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-24
AI Technical Summary
Existing dams suffer from cavitation and impact effects from water flow during flood discharge, resulting in insufficient energy dissipation space.
Anti-scouring and energy dissipation devices are adopted. The upper water pressure gauge monitors the vacuum zone and replenishes water, while the lower water pressure gauge monitors the impact force and sprays water in the opposite direction to buffer it. Anti-scouring and energy dissipation devices are installed on the upper and lower sides of the dam to reduce the damage of water flow to the dam.
It effectively prevents vacuum erosion and water flow impact on the dam, improves the dam's protective effect, and achieves effective energy dissipation and scour prevention.
Smart Images
Figure CN223753295U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water conservancy engineering technical field, concretely is a novel overflow dam energy dissipation anti-scour structure. BACKGROUND
[0002] Dam is a water conservancy hub, for developing and utilizing river hydraulic resources, taking engineering measures on river channel, building water conservancy type building controlling and dominating water flow, arranging it on reasonable position, mutually cooperating and coordinating work, thereby realizing hydraulic water conservancy task and composing an organic complex, including water retaining building, water releasing building etc. CONTENT OF UTILITY MODEL
[0003] (I) technical problem solved
[0004] In view of the prior art's insufficient, the utility model provides a novel overflow dam energy dissipation anti-scour structure, solves the cavitation and impact effect of water flow to dam, reaches the effect of anti-scour and energy dissipation.
[0005] (II) technical scheme
[0006] To realize above-mentioned purpose, the utility model provides following technical scheme: a novel overflow dam energy dissipation anti-scour structure, including dam, anti-scour device for filling the vacuum area of water flow and dam surface and energy dissipation device for reducing water flow impact force, the water flow of dam top side produces vacuum area when flowing down along upper side, the anti-scour device sets up in the upper side position of dam's slope, the energy dissipation device sets up in the lower side position of dam;
[0007] The anti-scour device includes upper water pressure measuring meter and upper water replenishing pipe, the upper water pressure measuring meter is installed in the upper side slope position of dam surface, the upper water replenishing pipe is installed in the upper side slope position of dam surface, and the upper water replenishing pipe is communicated with the water body in the reservoir surrounded by the dam through the water pump, and the upper water pressure measuring meter is arranged on the upper and lower sides of the upper water replenishing pipe.
[0008] The energy dissipation device includes lower water replenishing pipe, assembly type energy dissipation main body, anchor bar, stainless steel plate, corrosion-resistant bolt and lower water pressure measuring meter, the anchor bar penetrates the assembly type energy dissipation main body and is inserted into the inside of dam, the stainless steel plate is installed at the top of assembly type energy dissipation main body, the top end of anchor bar penetrates the stainless steel plate and extends above the stainless steel plate, the corrosion-resistant bolt is installed at the top end of anchor bar, the lower water replenishing pipe is installed in the inside of assembly type energy dissipation main body, and the end of lower water replenishing pipe points to the water side, and the lower water pressure measuring meter is installed on the surface of assembly type energy dissipation main body.
[0009] Preferably, the upper water pressure measuring meter and the upper water replenishing pipe are installed in the region where the upper side surface of the dam produces a vacuum area.
[0010] Preferably, the upper water supplement pipe is arranged in three rows and staggered distribution, and the diameter of the upper water supplement pipe is 50 cm.
[0011] Preferably, the tail pipe wall of the upper water supplement pipe is an inner bending structure.
[0012] Preferably, the lower water pressure gauge is installed on the surface of the assembled energy dissipation body and located at the position of the water-approaching measurement.
[0013] Preferably, the bottom of the assembled energy dissipation body is embedded into the dam.
[0014] Preferably, the energy dissipation device is provided with two rows, and the two rows of energy dissipation devices are staggered.
[0015] Compared with the prior art, the utility model provides a novel overflow dam energy dissipation and anti-scouring structure, has the following beneficial effects:
[0016] 1. The novel overflow dam energy dissipation and anti-scouring structure, through the upper water pressure gauge, whether the vacuum zone is generated on the dam surface is monitored, when the vacuum zone is generated on the dam surface, the pressure is monitored to be smaller by the upper water pressure gauge, thereby controlling the upper water supplement pipe to carry out water pumping to supplement the water in the vacuum zone position, thereby preventing the vacuum erosion, and the protection effect on the dam is improved.
[0017] 2. The novel overflow dam energy dissipation and anti-scouring structure, the water flow on the dam surface flows downwards to the bottom, and is impacted on the surface of the assembled energy dissipation body, the impact pressure is monitored through the lower water pressure gauge, the impact pressure is smaller when the water flow is smaller, only the water flow is buffered by the assembled energy dissipation body, when the water flow is larger, the impact pressure is monitored to be too large by the lower water pressure gauge, the lower water supplement pipe is controlled to carry out reverse water spraying, the impact force generated by the water flow in the upstream is reduced through the reverse water spraying mode, and the buffering protection effect is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a structural schematic view of the utility model;
[0019] Figure 2 It is a structural schematic view of the utility model Figure 1 It is an enlarged view of the anti-scouring device structure in the utility model, wherein (a) is a partial structure detail view;
[0020] Figure 3 It is an enlarged view of the energy dissipation device structure in the utility model; Figure 1
[0021] It is a top view of the two rows of staggered distribution of the upper water pressure gauge and the upper water supplement pipe of the anti-scouring device in the utility model; Figure 4
[0022] Figure 5 The utility model discloses an assembled energy dissipation main body of energy dissipation device's two rows staggered distribution's plan view.
[0023] 1, dam; 2, upper water pressure measuring gauge; 3, lower water supplement pipe; 4, assembled energy dissipation main body; 5, anchor bar; 6, stainless steel plate; 7, corrosion-resistant bolt; 8, vacuum zone; 9, upper water supplement pipe; 10, anti-scour device; 11, energy dissipation device; 12, lower water pressure measuring gauge. DETAILED DESCRIPTION
[0024] The utility model discloses an assembled energy dissipation main body of energy dissipation device's two rows staggered distribution's plan view.
[0025] Please refer to Figures 1-5 The utility model provides a novel overflow dam energy dissipation anti-scour structure, including dam 1 for filling up the vacuum zone 8 of water flow and dam 1 surface anti-scour device 10 and for reducing water flow impact force energy dissipation device 11, the water flow of dam 1 top side generates vacuum zone 8 when flowing down along the upper side, and the anti-scour device 10 is arranged at the upper side of the inclined surface of the dam 1, and the energy dissipation device 11 is arranged at the lower side of the dam 1.
[0026] The anti-scour device 10 includes an upper water pressure measuring gauge 2 and an upper water supplement pipe 9, the upper water pressure measuring gauge 2 is installed at the upper side of the inclined surface of the dam 1, the upper water supplement pipe 9 is installed at the upper side of the inclined surface of the dam 1, the upper water supplement pipe 9 is communicated with the water body in the reservoir surrounded by the dam 1 through the water pump, and the upper water pressure measuring gauge 2 is arranged on the upper side and the lower side of the upper water supplement pipe 9.
[0027] The energy dissipation device 11 includes a lower water supplement pipe 3, an assembled energy dissipation main body 4, an anchor bar 5, a stainless steel plate 6, a corrosion-resistant bolt 7 and a lower water pressure measuring gauge 12, the anchor bar 5 penetrates through the assembled energy dissipation main body 4 and is inserted into the inside of the dam 1, the stainless steel plate 6 is installed at the top of the assembled energy dissipation main body 4, the top end of the anchor bar 5 penetrates through the stainless steel plate 6 and extends above the stainless steel plate 6, the corrosion-resistant bolt 7 is installed at the top end of the anchor bar 5, the lower water supplement pipe 3 is installed in the inside of the assembled energy dissipation main body 4, the end of the lower water supplement pipe 3 points to the water side, the lower water pressure measuring gauge 12 is installed on the surface of the assembled energy dissipation main body 4, and the lower water supplement pipe 3 is connected to the upstream of the dam 1, and the great water pressure of the upstream of the dam 1 is utilized to control the backwash.
[0028] Further, the upper water pressure gauge 2 and the upper water supplement pipe 9 are installed in the area of the dam 1 where the upper side surface generates the vacuum area 8, the water pressure gauge is used to monitor the vacuum area 8 generated when the water flow overflows the dam, the vacuum area 8 will cause cavitation erosion phenomenon, damage the dam, the water pump supplements water to the vacuum area 8 through the water supplement pipe, fills the vacuum area 8, thereby avoiding the cavitation erosion phenomenon, and achieving the effect of preventing the scouring.
[0029] Further, the upper water supplement pipe 9 is arranged in three rows and staggered, the diameter of the upper water supplement pipe 9 is 50 cm, the dam axial spacing is 5-10 times the diameter of the water supplement pipe, and the dam surface spacing is 1 / 5-1 / 4 of the length of the vacuum area 8.
[0030] Further, the tail pipe wall of the upper water supplement pipe 9 is an inwardly curved structure, thereby avoiding the generation of a new vacuum area 8 due to the water supplement pipe extending out of the dam, resulting in the occurrence of cavitation erosion phenomenon.
[0031] Further, the lower water pressure gauge 12 is installed on the surface of the assembled energy dissipation body 4 and located in the water-facing position, when the lower water pressure gauge 12 monitors that the water flow has small impact pressure, the water flow is blocked by the assembled energy dissipation body 4 to reduce the flow velocity, thereby achieving the effect of energy dissipation, when the lower water pressure gauge 12 monitors that the water flow has large impact pressure, the water flow is sprayed in the opposite direction through the cooperation of the water pump and the lower water supplement pipe 3, thereby reducing the flow velocity of the water flow flowing down from the upper part, and achieving the effect of energy dissipation.
[0032] Further, the bottom of the assembled energy dissipation body 4 is embedded into the dam 1, thereby improving the integrity and stability of the assembled energy dissipation body 4 and the dam 1.
[0033] Further, the energy dissipation device 11 is provided in two rows, and the two rows of energy dissipation devices 11 are staggered, the spacing between the two rows is 2-3 times the length of the assembled energy dissipation body 4, and the spacing between the assembled energy dissipation bodies 4 in the same row is 1 / 10 of the width of the dam 1.
[0034] In use, the assembled energy dissipation body 4 is embeddedly assembled to the dam 1 at a position close to the downstream by the cooperation of the anchor bar 5, the stainless steel plate 6 and the corrosion-resistant bolt 7, the surface pressure of the dam 1 is monitored by the upper water pressure gauge 2 during the process that the upstream water flow of the dam 1 flows along the surface of the dam 1 downwards, when the vacuum zone 8 is generated, the pressure of the vacuum zone 8 area monitored by the upper water pressure gauge 2 becomes smaller, the upper water supplement pipe 9 is controlled to pump water to supplement the vacuum zone 8, so as to prevent the vacuum erosion, when the water flow flows to the downstream, the water flow is blocked and buffered by the assembled energy dissipation body 4, the impact force generated by the water flow is monitored by the lower water pressure gauge 12, when the water flow is small, the impact force is small, at this time, only the assembled energy dissipation body 4 is used to block and buffer, when the pressure monitored by the lower water pressure gauge 12 is too large, the lower water supplement pipe 3 is controlled to spray water reversely, the water flow of the reversely sprayed water collides with the upstream water flow, so as to reduce the impact force of the upstream water flow, and the buffering protection function is achieved.
[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A new type of energy dissipating and scouring preventing structure for an overflow dam, comprising a dam (1), a scouring preventing device (10) for filling the vacuum area (8) between the water flow and the surface of the dam (1), and an energy dissipating device (11) for reducing the impact force of the water flow, characterized in that: The water flow on the top of the dam (1) generates a vacuum area (8) when flowing downwards, the anti-scour device (10) is arranged on the upper side of the slope of the dam (1), and the energy dissipation device (11) is arranged on the lower side of the dam (1); The anti-scour device (10) comprises an upper water pressure gauge (2) and an upper water supplement pipe (9), the upper water pressure gauge (2) is installed on the upper side of the surface of the dam (1), and the upper water supplement pipe (9) is installed on the upper side of the surface of the dam (1); the upper water supplement pipe (9) is communicated with the water body in the reservoir surrounded by the dam (1) through a water pump, and the upper water pressure gauge (2) is arranged on the upper and lower sides of the upper water supplement pipe (9). The energy dissipation device (11) comprises a lower water supplement pipe (3), an assembled energy dissipation body (4), an anchor bar (5), a stainless steel plate (6), a corrosion-resistant bolt (7) and a lower water pressure gauge (12), the anchor bar (5) penetrates through the assembled energy dissipation body (4) and is inserted into the inside of the dam (1), the stainless steel plate (6) is installed on the top of the assembled energy dissipation body (4), the top end of the anchor bar (5) penetrates through the stainless steel plate (6) and extends above the stainless steel plate (6), the corrosion-resistant bolt (7) is installed on the top end of the anchor bar (5), the lower water supplement pipe (3) is installed in the inside of the assembled energy dissipation body (4), and the end of the lower water supplement pipe (3) points to the water side, and the lower water pressure gauge (12) is installed on the surface of the assembled energy dissipation body (4).
2. A new type of energy-dissipation and scour-prevention structure for an overflow dam according to claim 1, characterized in that: The upper water pressure gauge (2) and the upper water supplement pipe (9) are installed in the area where the vacuum area (8) is generated on the upper side of the dam (1).
3. A new type of overflow dam energy dissipation and scour prevention structure according to claim 1, characterized in that: The upper water supplement pipe (9) is arranged in three rows and is distributed in a staggered manner, and the diameter of the upper water supplement pipe (9) is 50cm.
4. A novel energy dissipating and scour protection structure for an overflow dam according to claim 1, characterized in that: The tail pipe wall of the upper water supplement pipe (9) is an inwardly curved structure.
5. A novel energy dissipating and scour protection structure for an overflow dam according to claim 1, characterized in that: The lower water pressure gauge (12) is installed on the surface of the assembled energy dissipation body (4) and located on the water side.
6. A novel energy dissipating and scour protection structure for an overflow dam according to claim 1, characterized in that: The bottom of the assembled energy dissipation body (4) is embedded into the inside of the dam (1).
7. A novel energy dissipating and scour protection structure for an overflow dam according to claim 1, characterized in that: The energy dissipation device (11) is provided with two rows, and the two rows of energy dissipation devices (11) are arranged in a staggered manner.