Combined structure arranged above water inlet / outlet and used for guiding and discharging ditch water
By setting up a three-tiered structure above the inlet and outlet of the hydropower station, the problem of silt and solid runoff entering the reservoir from gullies was solved, achieving smooth water flow and structural protection.
Patent Information
- Application Number
- CN202520064033.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-10
AI Technical Summary
In water conservancy and hydropower projects, the development of gullies is unavoidable, causing silt and solid runoff to enter the reservoir, damaging the inlet and outlet structures and slopes.
The system adopts a three-tiered structure, including a cantilevered slope structure, a guide and drainage retaining wall structure, and a flow diversion and energy dissipation structure, which respectively intercept stone debris, silt, and energy-dissipating water flow to ensure that the water flows smoothly into the reservoir.
It effectively intercepts solid runoff in gullies, reduces the risk of silt blockage, protects the inlet and outlet structures, avoids damage to the drainage structure by high-speed water flow, and achieves smooth water flow.
Smart Images
Figure CN223675282U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water conservancy and hydropower engineering technical field especially a combined structure of arranging in the guide ditch water of water inlet / outlet upper part. BACKGROUND
[0002] In the development of water conservancy and hydropower, many gully development and cannot avoid geological conditions are inevitably encountered. When the water inlet / outlet of hydropower station is developed by many gullies, in order to intercept the sediment and solid runoff in gully into the reservoir, and the structure and slope of water inlet / outlet are protected from the damage of ditch water, which becomes the design problem. UTILITY MODEL CONTENTS
[0003] The utility model solves the technical problem that: in view of the above existing problems, a combined structure of arranging in the guide ditch water of water inlet / outlet upper part is provided.
[0004] The utility model adopts the technical scheme that: a combined structure of arranging in the guide ditch water of water inlet / outlet upper part, comprising:
[0005] The wall type slope structure is arranged on the top platform of the slope above the water inlet / outlet of hydropower station, is used to carry out the preliminary filtration to the gully water that gully flows into, to intercept the stone and block stone in gully water;
[0006] The guide and drainage retaining wall structure is arranged on the next stage platform of the wall type slope structure along the slope, is used to carry out the secondary filtration to the gully water that is preliminarily filtered, to intercept the sediment in gully water;
[0007] The guide and energy dissipation structure is arranged on the next stage platform of the guide and drainage retaining wall structure along the slope, is used to carry out the energy dissipation to the gully water that is secondarily filtered, to make it smooth and lead into the reservoir.
[0008] Through the above technical means, the wall type slope structure is used as the first stage filtration structure, the wall type slope structure intercepts the stone and block stone in gully water, the guide and drainage retaining wall structure is used as the second stage filtration structure, the guide and drainage retaining wall structure intercepts the sediment in gully water, the guide and energy dissipation structure is used as the third stage energy dissipation structure, and the gully water after filtration is energy dissipated and guided to the reservoir.
[0009] In some embodiments, the guide and drainage retaining wall structure is in the shape of "eight", the cross section of the guide and drainage retaining wall structure adopts gravity type, a plurality of flow discharge bottom holes are arranged at the bottom of the guide and drainage retaining wall structure along the horizontal direction, and a fixed trash screen is arranged at the hole opening of the wall type slope structure close to the flow discharge bottom hole.
[0010] In some embodiments, a sediment intercepting step is arranged between the wall bottom plate of the guide and drainage retaining wall structure and the flow discharge bottom hole, so that the upstream side of the guide and drainage retaining wall structure forms a sediment intercepting pit for intercepting sediment.
[0011] In some embodiments, a stainless steel pipe is embedded in the slag retaining step and penetrates through the guide and drainage retaining wall structure, and is used to discharge the ditch water at the bottom of the guide and drainage retaining wall structure.
[0012] In some embodiments, the guide and drainage structure comprises a drainage open channel section, a slope culvert section and a cover culvert section, the drainage open channel section is adjacent to the drainage side of the guide and drainage retaining wall structure, the slope culvert section is arranged along the slope, one end of the slope culvert section is connected to the lower part of the drainage open channel section, the other end of the slope culvert section is connected to the cover culvert section, the cover culvert section is arranged on the slope gate well platform, and the outlet end of the cover culvert section is communicated with the reservoir.
[0013] In some embodiments, the cross section of the drainage open channel section adopts a tapered rectangular cross section, the cross section of the slope culvert section adopts a rectangular cross section, the cross section of the cover culvert section adopts a rectangular cross section, and continuous energy dissipation steps are arranged inside the drainage open channel section and the slope culvert section, and a drop well is arranged at the connection between the slope culvert section and the cover culvert section.
[0014] In some embodiments, a stainless steel handrail is arranged on the side wall in the slope culvert section, a steel door is arranged on the side wall at the bottom of the slope culvert section, and a steel ladder is arranged on the inner side wall of the drop well.
[0015] In some embodiments, the cover of the cover culvert section adopts a prefabricated concrete cover, and an asphalt concrete pavement is arranged on the prefabricated concrete cover.
[0016] In some embodiments, a longitudinal slope of 1% is arranged on the cross section of the cover culvert section to facilitate drainage.
[0017] In some embodiments, a plurality of drainage holes are arranged on the top of the cantilever wall type slope structure along the horizontal direction, and a concrete pavement layer is arranged on the slope surface between the cantilever wall type slope structure and the guide and drainage retaining wall structure.
[0018] The utility model discloses the beneficial effects are:
[0019] 1. A three-level layered structure is arranged on the upper slope of the water inlet / outlet of the hydropower station, the first level is the cantilever wall type slope structure, which blocks the large solid runoff in the ditch water, protects the downstream structure from the impact of large-volume objects, the second level is the guide and drainage retaining wall structure, which intercepts the sediment in the ditch water and reduces the risk of sediment blocking the drainage channel, and the third level is the guide and drainage structure, which dissipates the energy of the filtered ditch water and prevents high-speed water flow from impacting and damaging the drainage structure, so that the ditch water is finally smoothly guided into the reservoir through twice filtration and three times guide, and damage to the water inlet / outlet structure is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a schematic diagram of a planar structure of the present application.
[0021] Figure 2 is a schematic diagram of a sectional structure of the present application.
[0022] Figure 3 is a schematic diagram of a structure of a wall-piercing slope structure in the present application.
[0023] Figure 4 is a schematic diagram of a structure of a guide and drainage retaining wall structure in the present application.
[0024] Figure 5 is a schematic diagram of a structure of a drainage open channel section in the present application.
[0025] Figure 6 is a schematic diagram of a structure of a slope culvert section in the present application.
[0026] Figure 7 is a schematic diagram of a structure of a cover plate culvert section in the present application.
[0027] Explanation of reference signs:
[0028] 1, wall-piercing slope structure; 2, flow discharge flat hole; 3, guide and drainage retaining wall structure; 4, slag blocking step; 5, stainless steel pipe; 6, fixed trash screen; 7, flow discharge bottom hole; 8, drainage open channel section; 9, slope culvert section; 10, cover plate culvert section; 11, drop well; 12, slope gate well platform; 13, steel ladder; 14, energy dissipation step; 15, steel door; 16, stainless steel handrail; 17, precast concrete cover plate; 18, asphalt concrete pavement.
[0029] This specification includes reference to“one embodiment” or“an embodiment”. Occurrence of the phrase“in one embodiment” or“in an embodiment” does not necessarily refer to the same embodiment. Particular features, structures, or characteristics can be combined in any suitable manner in an embodiment consistent with this disclosure.
[0030] “includes”, this term is open. As used in the appended claims, this term does not exclude additional structures or steps. DETAILED DESCRIPTION
[0031] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme of the present application will be further explained in combination with specific embodiments.
[0032] In combination with Figures 1 to 7As shown, the embodiment is a combined structure for guiding and draining ditch water above the water inlet / outlet, which comprises a cantilever wall type slope sticking structure 1, a guiding and draining retaining wall structure 3 and a flow guiding and energy dissipating structure. The top platform of the slope above the water inlet / outlet of the hydropower station is provided with the cantilever wall type slope sticking structure 1, which is used for preliminarily filtering the ditch water flowing into the ditch to intercept the stone and block stones in the ditch water. The cantilever wall type slope sticking structure 1 is provided with the guiding and draining retaining wall structure 3 on the next level platform along the slope, which is used for secondarily filtering the ditch water preliminarily filtered to intercept the silt in the ditch water. The guiding and draining retaining wall structure 3 is provided with the flow guiding and energy dissipating structure on the next level platform along the slope, which is used for dissipating the energy of the ditch water secondarily filtered to smoothly introduce the ditch water into the reservoir.
[0033] In some embodiments, as shown in Figure 2 With Figure 3 As shown, the top of the cantilever wall type slope sticking structure 1 is provided with a plurality of drainage flat holes 2 spaced apart horizontally. Specifically, five drainage flat holes 2 are provided in the embodiment, each hole having a size of 1m x 1m. The drainage flat holes 2 are located at the upper position of the cantilever wall type slope sticking structure 1 and are flush with the top. The five holes are arranged in a linear type with a spacing of 0.5m. The cross section of the cantilever wall type slope sticking structure 1 is gravity type, with a width of 0.5m and a height of 1.4m. A concrete protective layer is provided on the surface of the slope between the cantilever wall type slope sticking structure 1 and the guiding and draining retaining wall structure 3. The concrete protective layer is specifically cleared according to the site terrain at a ratio of 1:1, and the cantilever wall type slope sticking structure 1 and the concrete protective layer form an integral whole. The cantilever wall type slope sticking structure 1 plays a first role in intercepting the residue, and the concrete protective layer can effectively protect the slope.
[0034] In some embodiments, as shown in Figure 1 , Figure 2 With Figure 4 As shown, the guiding and draining retaining wall structure 3 is in the shape of an "eight" and is located on the next level of the cantilever wall type slope sticking structure 1. The cross section of the guiding and draining retaining wall structure 3 is gravity type. Specifically, the specific specifications of the guiding and draining retaining wall structure 3 in the embodiment are a top width of 0.8m, a bottom width of 2.4m and a height of 5m. A plurality of drainage bottom holes 7 are provided at the bottom of the guiding and draining retaining wall structure 3 spaced apart horizontally. The drainage bottom holes 7 are provided with fixed trash barriers 6 near the orifice of the cantilever wall type slope sticking structure 1. Specifically, three drainage bottom holes 7 are provided at the lower part of the guiding and draining retaining wall structure 3 in the embodiment, each having a width of 1m. The size of the fixed trash barrier 6 in the embodiment is 1.05m x 1.05m. The fixed trash barrier 6 is a finished steel grating, which can be replaced regularly during operation.
[0035] Further, a residue intercepting step 4 is provided between the wall bottom plate of the guiding and draining retaining wall structure 3 and the drainage bottom hole 7, so that the upstream side of the guiding and draining retaining wall structure 3 forms a residue intercepting pit. The height of the residue intercepting step 4 in the embodiment is 60cm, and the width of the residue intercepting pit is 5m. The residue intercepting pit can be cleaned and maintained as needed in the later period.
[0036] Further, the slag blocking step 4 is embedded with stainless steel pipes 5 which penetrate through the drainage retaining wall structure 3, and the stainless steel pipes 5 are used to drain the ditch water at the bottom of the drainage retaining wall structure 3.
[0037] In some embodiments, as shown in Figure 5 、 Figure 6 and Figure 7 , the flow guiding and energy dissipating structure includes a drainage open channel section 8, a slope culvert section 9 and a cover culvert section 10. The drainage open channel section 8 is connected to the drainage side of the drainage retaining wall structure 3, and specifically, the drainage open channel section 8 is connected below the orifice of the drainage bottom hole 7. The slope culvert section 9 is arranged along the slope, one end of the slope culvert section 9 is connected to the lower part of the drainage open channel section 8, and the other end of the slope culvert section 9 is connected with the cover culvert section 10, the cover culvert section 10 is arranged on the slope gate well platform 12, and the outlet end of the cover culvert section 10 is connected to the reservoir.
[0038] Further, the cross section of the drainage open channel section 8 adopts a tapered rectangular cross section, the net width gradually changes from 4.6m to 2.4m, and the net height is 2.5m. The cross section of the slope culvert section 9 adopts a rectangular cross section, and the net size is 2m x 2.4m. The inside of the drainage open channel section 8 and the slope culvert section 9 is provided with a continuous energy dissipating step 14, and the connection part of the slope culvert section 9 and the cover culvert section 10 is provided with a drop well 11, which collects and dissipates the ditch water flowing from the slope to reduce the flow rate of the ditch water. Specifically, the drop well 11 is located directly below the end of the slope culvert section 9, and the net cross-sectional size is 2.5m x 4.1m.
[0039] Further, the side wall of the slope culvert section 9 is provided with a stainless steel handrail 16, the bottom side wall of the slope culvert section 9 is provided with a steel door 15, and the inner side wall of the drop well 11 is provided with a steel ladder 13, so as to facilitate the inspection and maintenance of the staff in the later period.
[0040] Further, the cross section of the cover culvert section 10 adopts a rectangular cross section, and the cross section of the cover culvert section 10 is provided with a longitudinal slope of 1% to facilitate drainage, the net width is 2m, and the net height gradually changes from 2m to 2.3m. The cover of the cover culvert section 10 adopts a prefabricated concrete cover 17, and the prefabricated concrete cover 17 is paved with an asphalt concrete pavement 18.
[0041] The implementation principle of the combined structure for guiding and draining ditch water arranged above the inlet / outlet is as follows:
[0042] In this embodiment, the gully water developed in the gully is blocked and drained by adopting the principle of blocking and draining combination and mainly draining. Specifically, the first grade pick wall type slope structure 1 can effectively block larger solid runoff, so that the gully water is drained into the next grade structure after rough filtration. In this way, the downstream structure is protected from the impact of large volume objects, and preliminary rough filtration is also performed.
[0043] For the second grade "eight" type guide and drain retaining wall structure 3, two drainage modes are provided to adapt to the gully water drainage requirements under different flow conditions: when small flow gully water is discharged, the gully water is filtered and drained into the drainage open channel section 8 below through the fixed trash screen 6 through the drain bottom hole 7 of the retaining wall, and when large flow gully water is discharged, the sediment in the gully water is deposited at the lower part of the retaining wall, and the gully water is washed over the retaining wall and into the drainage open channel. This way can ensure smooth water flow under high flow conditions, while reducing the risk of sediment blocking the drainage system.
[0044] After being treated by the previous grade structure, the gully water has been fully filtered, and then the energy of the water flow is reduced through the side slope culvert section 9 and the drop well 11 to prevent high-speed water flow from eroding and damaging the structure. Finally, the gully water is smoothly drained into the reservoir through the cover plate culvert section 10.
[0045] The structure improves the water quality and reduces the possibility of harmful substances entering the reservoir, and also avoids damage to the slope and the inlet / outlet structure.
[0046] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A combination structure for arranging a gutter for draining water above an inlet / outlet, characterized in that, The utility model relates to a kind of structures for preventing and controlling gully water, including: The wall-piercing slope structure (1) is arranged on the top platform of the slope above the water inlet / outlet of the hydropower station, and is used to preliminarily filter the gully water flowing into the gully, so as to intercept the stone and block stone in the gully water; The guide and drainage retaining wall structure (3) is arranged on the next level platform of the wall-piercing slope structure (1) along the slope, and is used to secondarily filter the gully water preliminarily filtered, so as to intercept the silt in the gully water; The flow guide and energy dissipation structure is arranged on the next level platform of the guide and drainage retaining wall structure (3) along the slope, and is used to dissipate the energy of the gully water secondarily filtered so as to smoothly introduce it into the reservoir.
2. The combination of claim 1, wherein: The guide and drainage retaining wall structure (3) is in the shape of "eight", the cross section of the guide and drainage retaining wall structure (3) adopts gravity type, and the bottom of the guide and drainage retaining wall structure (3) is provided with a plurality of discharge bottom holes (7) spaced apart along the horizontal direction, and the discharge bottom hole (7) is provided with a fixed trash barrier (6) near the aperture of the wall-piercing slope structure (1).
3. A combination structure for directing gutter water over a water inlet / outlet according to claim 2, characterized in that: The wall bottom plate of the guide and drainage retaining wall structure (3) is provided with a debris blocking step (4) between the discharge bottom hole (7), so that the upstream side of the guide and drainage retaining wall structure (3) forms a debris blocking pit for blocking debris.
4. The combination of claim 3, wherein: The debris blocking step (4) is pre-buried with a stainless steel pipe (5) penetrating through the guide and drainage retaining wall structure (3), and the stainless steel pipe (5) is used to discharge the gully water at the bottom of the guide and drainage retaining wall structure (3).
5. The combination structure of claim 1, wherein: The flow guide and energy dissipation structure includes a drainage open channel section (8), a slope culvert section (9) and a cover culvert section (10), the drainage open channel section (8) is adjacent to the drainage side of the guide and drainage retaining wall structure (3), the slope culvert section (9) is arranged along the slope, one end of the slope culvert section (9) is connected to the lower part of the drainage open channel section (8), the other end of the slope culvert section (9) is connected with the cover culvert section (10), the cover culvert section (10) is arranged on the slope gate well platform (12), and the outlet end of the cover culvert section (10) is communicated with the reservoir.
6. A combination structure for directing gutter water over a water inlet / outlet according to claim 5, characterized in that: The cross section of the drainage open channel section (8) adopts a tapered rectangular cross section, the cross section of the slope culvert section (9) adopts a rectangular cross section, the cross section of the cover culvert section (10) adopts a rectangular cross section, and the inside of the drainage open channel section (8) and the slope culvert section (9) is provided with a continuous energy dissipation step (14), and the connection part of the slope culvert section (9) and the cover culvert section (10) is provided with a drop well (11).
7. The combination of claim 6, wherein: The sidewall in the slope culvert section (9) is provided with a stainless steel handrail (16), the sidewall at the bottom of the slope culvert section (9) is provided with a steel door (15), and the inner sidewall of the drop well (11) is provided with a steel ladder (13).
8. The combination of claim 5, wherein: The cover of the cover culvert section (10) adopts a prefabricated concrete cover (17), and the prefabricated concrete cover (17) is paved with asphalt concrete pavement (18).
9. The combination of claim 5, wherein: The cross section of the cover culvert section (10) is provided with a longitudinal slope of 1% to facilitate drainage.
10. The combination structure of claim 1, wherein: The top of the wall-piercing slope structure (1) is provided with a plurality of discharge flat holes (2) spaced apart along the horizontal direction, and the slope surface between the wall-piercing slope structure (1) and the guide and drainage retaining wall structure (3) is provided with a concrete pavement layer.