Concrete dam crest hidden type drainage structure system
By installing a concealed drainage structure on the top of the concrete dam and connecting the collection trough and the main drainage pipe with longitudinal and transverse stainless steel drainage pipes, the construction difficulties of traditional drainage systems are solved, the dam surface is kept aesthetically pleasing and erosion is prevented, and the durability of the concrete dam is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional dam crest drainage systems are difficult to construct and cannot guarantee flatness, which affects aesthetics and can easily lead to dam surface erosion. Long-term erosion can affect the durability of concrete.
A concealed drainage structure system is adopted, including upstream and downstream concrete dam crests, wave walls and guardrails, with water inlets and collection troughs. The system is connected to the main drainage pipe through longitudinal and transverse stainless steel drainage pipes. Combined with drainage grates and pipe opening protection, the system achieves drainage between the collection trough and the upstream reservoir of the dam.
It solves the construction problems of traditional drainage systems, maintains the aesthetics of the dam surface, avoids dam surface erosion, and improves the durability of concrete dams.
Smart Images
Figure CN224031828U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water conservancy and hydropower engineering concrete dam crest structure technical field, concretely relates to a kind of concrete dam crest hidden drainage structure system. BACKGROUND
[0002] Concrete dam crest is usually larger in width to meet the requirements of traffic, dam crest building arrangement, etc., forming a larger catchment area on the dam crest, so a drainage system needs to be set.
[0003] Currently, the usual way of dam crest drainage is to set a transverse slope with very small slope on the dam crest, using dam crest drainage ditch to drain the water accumulated on the dam crest to the left and right abutments, or using drainage pipes to lead to the upstream or downstream dam surface. The disadvantages of this drainage system are: ① The construction of one-way slope is difficult to ensure the flatness of the road surface, and water accumulation is easy to form; ② A separate dam crest drainage ditch needs to be set or combined with a cable trench to arrange the drainage ditch, which affects the appearance of the dam surface; ③ Centralized drainage is easy to cause erosion and pollution to the dam surface, and long-term erosion affects the durability of concrete. SUMMARY
[0004] The purpose of the utility model is to provide a concrete dam crest hidden drainage structure system suitable for concrete gravity dams and arch dams, which solves the problems of disordered arrangement of traditional dam crest drainage systems and erosion of the dam surface.
[0005] In order to achieve the above-mentioned purpose, the utility model realizes the following technical solutions:
[0006] A concrete dam crest hidden drainage structure system, comprising upstream and downstream concrete dam crests respectively provided with transverse slopes, an upstream wave protection wall is provided on the end face of the upstream concrete dam crest, and a downstream guardrail is provided on the end face of the downstream concrete dam crest, a plurality of water inlets and water collection tanks are respectively provided on the bottom of the upstream wave protection wall or the downstream guardrail, and the water collected on the dam crest flows through the water inlets and the water collection tanks and then through the in-dam drainage pipeline to the upstream surface of the dam for drainage.
[0007] Further, the drainage pipeline comprises longitudinal drainage stainless steel pipes, transverse drainage stainless steel pipes and main drainage stainless steel pipes, the longitudinal drainage stainless steel pipes connect a plurality of water collection tanks horizontally arranged in the upstream or downstream to the drainage pipeline, and the transverse drainage stainless steel pipes connect the downstream drainage pipeline to the main drainage stainless steel pipe.
[0008] Further, the longitudinal drainage stainless steel pipes and the transverse drainage stainless steel pipes are respectively provided with slopes, which facilitates the flow of collected water to the main drainage stainless steel pipe.
[0009] Further, the water inlets are provided with drainage gratings, and the bottom of the water collection tank is provided with a pipe opening grille guard.
[0010] Furthermore, transverse joints are provided between the dam sections.
[0011] Compared with the prior art, this utility model has the following advantages:
[0012] This utility model discloses a concealed drainage structure system for concrete dam crests, applicable to concrete gravity dams and arch dams, especially for medium and high dams in areas with heavy rainfall. The wide dam crest results in a large catchment area. Water collected on the dam crest can enter the collection trough through side drainage grates and then flow into the upstream reservoir through the dam body drainage pipes. This solves the problems of messy layout and dam surface erosion in traditional dam crest drainage systems. Attached Figure Description
[0013] Figure 1 This is a side view of the present invention.
[0014] Figure 2 This is a schematic diagram of the longitudinal arrangement of this utility model.
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the drainage channel of this utility model.
[0016] Attached reference numerals: 1. Upstream concrete dam crest; 2. Downstream concrete dam crest; 3. Upstream wave wall; 4. Downstream guardrail; 5. Drainage grate; 6. Water collection trough; 7. Pipe opening grille protection; 8. Horizontal drainage stainless steel pipe; 9. Longitudinal drainage stainless steel pipe; 10. Main drainage stainless steel pipe; 11. Horizontal joint. Detailed Implementation
[0017] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.
[0018] like Figure 1 , 2 As shown in Figures 1 and 3, a concealed drainage structure system for a concrete dam crest includes an upstream concrete dam crest 1 and a downstream concrete dam crest 2, each with a transverse slope. An upstream wave wall 3 is installed on the end face of the upstream concrete dam crest 1, and a downstream guardrail 4 is installed on the end face of the downstream concrete dam crest 2. Three water inlets and a water collection trough 6 are respectively installed on the bottom connecting side of the upstream wave wall 3 or the downstream guardrail 4. The water collection trough 6 is located below the water inlets. The connecting side specifically refers to the connection part between the bottom of the upstream wave wall 3 or the downstream guardrail 4 and the upstream concrete dam crest 1 or the downstream concrete dam crest 2. The water collected on the dam crest flows through the water inlets and the water collection trough 6 and then flows to the upstream face of the dam through the drainage pipe inside the dam for drainage.
[0019] The drainage pipeline comprises longitudinal drainage stainless steel pipes 9, transverse drainage stainless steel pipes 8 and a main drainage stainless steel pipe 10, the longitudinal drainage stainless steel pipes 9 connect the three water collecting tanks 6 arranged transversely in the upstream or downstream to the drainage pipeline, and the transverse drainage stainless steel pipes 8 connect the downstream drainage pipeline to the main drainage stainless steel pipe 10. Specifically, in the upstream, the longitudinal drainage stainless steel pipes 9 connect the three water collecting tanks 6 arranged transversely in the upstream to the main drainage stainless steel pipe 10; in the downstream, the longitudinal drainage stainless steel pipes 9 connect the three water collecting tanks 6 arranged transversely in the downstream to the transverse drainage stainless steel pipes 8, and then the transverse drainage stainless steel pipes 8 connect to the main drainage stainless steel pipe 10. The water outlet of the main drainage stainless steel pipe 10 is lower than the normal water level.
[0020] Preferably, the longitudinal drainage stainless steel pipes 9 and the transverse drainage stainless steel pipes 8 are respectively provided with slopes, so as to facilitate the water flow to the main drainage stainless steel pipe 10.
[0021] Preferably, the water inlet is provided with a drainage grate 5, and the bottom of the water collecting tank 6 is provided with a pipe opening grille guard 7.
[0022] The dam sections are provided with transverse joints, and each dam section is provided with the above drainage structure.
[0023] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the concept of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as being within the protection scope of the present application.
Claims
1. A concrete dam crest concealed drainage structure system, comprising an upstream concrete dam crest and a downstream concrete dam crest respectively provided with a transverse slope surface, an upstream wave protection wall is arranged on the end surface of the upstream concrete dam crest, and a downstream guardrail is arranged on the end surface of the downstream concrete dam crest, characterized in that: The bottom of the upstream wave wall or the downstream guardrail is respectively provided with a plurality of water inlets and water collecting channels, and the dam top water collecting flow is drained to the upstream face of the dam through the water inlets, the water collecting channels and the dam inner drainage pipeline.
2. A concealed drainage structure system for concrete dam crest according to claim 1, characterized in that: The drainage pipeline comprises longitudinal drainage stainless steel pipes, transverse drainage stainless steel pipes and main drainage stainless steel pipes, the longitudinal drainage stainless steel pipes are connected to the drainage pipeline from a plurality of water collecting channels horizontally arranged in the upstream or downstream, and the transverse drainage stainless steel pipes are connected to the main drainage stainless steel pipes from the downstream drainage pipeline.
3. A concealed drainage system for concrete dam crest according to claim 2, characterized in that: The longitudinal drainage stainless steel pipes and the transverse drainage stainless steel pipes are respectively provided with slopes, so that the water collecting flow is conveniently drained to the main drainage stainless steel pipes.
4. A concealed drainage system for a concrete dam according to claim 2 or 3, wherein: The water inlets are provided with drainage gratings, and the bottom of the water collecting channel is provided with a pipe opening grid protection.