Discharge outlet structure of rainwater ditch on beach face
By designing a beach-surface rainwater drainage structure including storm drains, storm drain foundations, foot protection stones, beach shoulder retaining walls, silt stones and anti-silt stones, the exposure and silt in the prior art are solved. The problem of this has achieved the concealment of the storm drain and the stability of the beach.
Patent Information
- Application Number
- CN202420931797.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The discharge outlet of the existing beach surface rain drain is easily exposed to the beach surface, affecting the landscape, and easily silting, destroying the stability of the beach sand transportation system.
A storm drain discharge port structure on the beach surface is designed, including storm drain, storm drain foundation, footblock stone, beach shoulder retaining wall, skeleton stone and anti-silt stone. Through the combination of these components, the storm drain is hidden in Below the beach surface, prevent siltation and enhance structural stability.
It effectively hides the storm drain, reduces the impact on the beach landscape, and reduces the risk of siltation, promotes the stability of the beach and the formation of islands and reefs, and maintains the stability of the beach around the discharge outlet.
Smart Images
Figure CN222456295U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rainwater channels, in particular to a rainwater channel discharge outlet structure on a beach. Background Art
[0002] In recent years, coastal cities have successively carried out beach restoration work in coastal waters and have achieved certain results. However, coastal beach restoration will inevitably transform the existing stormwater channels along the coast. In the coastal zone close to the city center, the stormwater channels are mostly the main channels for urban rainwater discharge, and they bear the heavy responsibility of drainage and flood prevention.
[0003] The traditional practice of setting up stormwater outlets in the beach area is to discharge directly on the beach shoulder. The outlet is exposed to the beach area frequented by tourists, which not only affects the beach landscape but also easily causes siltation, thus destroying the stability of the beach sand transport system. Utility Model Content
[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a stormwater channel discharge outlet structure on a beach surface, which can prevent the discharge outlet from being exposed on the beach surface and solve the problem that the discharge outlet is prone to siltation.
[0005] The storm drain outlet structure on the beach surface according to the embodiment of the utility model comprises a storm drain, which is arranged on the beach and is located below the beach surface; a storm drain foundation, which is arranged at the bottom of the storm drain and is used to provide support for the storm drain; two foot guard stones, which are symmetrically arranged on both sides of the storm drain and are arranged along the extension direction of the storm drain, and the foot guard stones extend downward and span between the storm drain and the storm drain foundation, and the foot guard stones are used to prevent the foundation sand from flowing at the bottom of the storm drain. loss; beach shoulder retaining wall, the number of beach shoulder retaining walls is the same as the number of footing blocks, each footing block is provided with a corresponding beach shoulder retaining wall, the beach shoulder retaining wall is located at the end of the footing block close to the discharge end of the stormwater channel, the beach shoulder retaining wall is used to resist the upper beach shoulder sand of the stormwater channel; bottom protection sheet stone, the bottom protection sheet stone is connected to the foundation of the stormwater channel, the bottom protection sheet stone is located at the discharge end of the stormwater channel, the bottom protection sheet stone is used to enhance the structural stability of the stormwater channel; anti-siltation riprap, the anti-siltation riprap is arranged at the end of the bottom protection sheet stone opposite to the stormwater channel, the anti-siltation riprap is used to prevent the loss of quicksand.
[0006] The stormwater channel outlet structure on the beach surface according to the embodiment of the utility model has at least the following beneficial effects: by combining with the beach landscape, the stormwater channel is hidden below the beach surface, and at the same time, the beach shoulder sand preservation requirements are taken into account through the beach shoulder retaining wall, which, on the one hand, reduces the impact of the stormwater channel outlet on the landscape and the risk of siltation, and on the other hand, promotes the formation of islands and reefs, further maintaining the stability of the beach around the outlet.
[0007] According to some embodiments of the utility model, a sand retaining wall is provided on the top of the storm water channel, and the extension direction of the sand retaining wall is perpendicular to the extension direction of the storm water channel.
[0008] According to some embodiments of the present invention, the cross-sectional area of the storm drain foundation gradually increases in a direction away from the storm drain.
[0009] According to some embodiments of the present utility model, the storm drain foundation includes a crushed stone cushion layer and a base bed block stone layer, and the crushed stone cushion layer and the base bed block stone layer are arranged in sequence in a direction away from the storm drain.
[0010] According to some embodiments of the present invention, the top elevation of the storm drain is lower than the average daily low tide level of the beach.
[0011] According to some embodiments of the present invention, the beach shoulder retaining wall is arranged obliquely.
[0012] According to some embodiments of the present invention, the cross-sectional area of the bottom protection sheet stone gradually increases in a direction away from the storm drain.
[0013] According to some embodiments of the utility model, the arrangement distance of the anti-siltation riprap along the extension direction of the rainwater channel is greater than the arrangement distance of the bottom protection sheet stones along the extension direction of the rainwater channel.
[0014] According to some embodiments of the present invention, the width of the foot protection stone is greater than one third of the width of the storm drain.
[0015] According to some embodiments of the present invention, the bed block layer extends in a direction away from the storm drain to beyond the daily average low water level line.
[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0018] Figure 1 It is a cross-sectional view of the storm drain outlet structure on the beach surface according to an embodiment of the utility model;
[0019] Figure 2 for Figure 1 Sectional view of 1-1;
[0020] Figure 3 for Figure 1 Sectional view of 2-2.
[0021] Reference numerals:
[0022] Stormwater channel 100, sand retaining wall 110;
[0023] Stormwater channel foundation 200, crushed stone cushion layer 210, bed block stone layer 220;
[0024] Foot protection stone 300;
[0025] Beach shoulder retaining wall 400;
[0026] Backing sheet stone 500;
[0027] Anti-siltation riprap 600;
[0028] The beach is 10, the beach shoulder and beach boundary point are 20, and the beach shoulder is 30. DETAILED DESCRIPTION
[0029] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a first or second description, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0033] refer to Figures 1 to 3 The invention describes a storm drain outlet structure for a beach surface according to an embodiment of the utility model.
[0034] like Figures 1 to 3As shown, the stormwater channel outlet structure on the beach surface includes a stormwater channel 100, which is arranged on the beach 10 and is located below the beach surface of the beach 10; a stormwater channel foundation 200, which is arranged at the bottom of the stormwater channel 100 and is used to provide support for the stormwater channel 100; two footing blocks 300, which are symmetrically arranged on both sides of the stormwater channel 100, and the footing blocks 300 are arranged along the extension direction of the stormwater channel 100, and the footing blocks 300 extend downward and span between the stormwater channel 100 and the stormwater channel foundation 200, and the footing blocks 300 are used to prevent the foundation quicksand at the bottom of the stormwater channel 100 from being lost; a beach shoulder retaining wall 400; The number of beach shoulder retaining walls 400 is the same as the number of footing blocks 300. Each footing block 300 is correspondingly provided with a beach shoulder retaining wall 400. The beach shoulder retaining wall 400 is located at one end of the footing block 300 close to the discharge end of the stormwater channel 100. The beach shoulder retaining wall 400 is used to resist the upper beach shoulder sand of the stormwater channel 100; the bottom protection sheet stone 500, the bottom protection sheet stone 500 is connected to the stormwater channel foundation 200, the bottom protection sheet stone 500 is located at the discharge end of the stormwater channel 100, and the bottom protection sheet stone 500 is used to enhance the structural stability of the stormwater channel 100; the anti-siltation riprap 600, the anti-siltation riprap 600 is arranged at the end of the bottom protection sheet stone 500 opposite to the stormwater channel 100, and the anti-siltation riprap 600 is used to prevent the loss of quicksand.
[0035] like Figure 1As shown, the stormwater channel 100 is arranged in the front-to-back direction, the beach 10 is above the stormwater channel 100, and the sand cover of the beach 10 is arranged on the stormwater channel 10 so that the stormwater channel 100 is hidden in the beach 10. A stormwater channel foundation 200 is arranged at the lower end of the stormwater channel 100, and the stormwater channel foundation 200 provides a stable basic platform on the beach 10 to support the structure of the entire stormwater channel 100 and prevent the stormwater channel 100 from settling on the beach 10. Foot protection blocks 300 are symmetrically arranged at the left and right ends of the stormwater channel 100, and the two foot protection blocks 300 extend in the front-to-back direction. Specifically, the foot protection blocks 300 extend downward and are arranged between the stormwater channel 100 and the stormwater channel foundation 200 in a blocking shape. The footing block 300 extends forward to be flush with the discharge end of the stormwater channel 100, and a beach shoulder retaining wall 400 is also provided at the front end of each footing block 300. The beach shoulder retaining wall 400 extends forward from the discharge end of the stormwater channel 100 to form a barrier to block the beach shoulder 30 sand on the upper part of the stormwater channel 100. The front end of the stormwater channel 100 is also provided with a bottom protection sheet 500, which is arranged on the stormwater channel foundation 200, that is, the bottom protection sheet 500 is located in the area enclosed by the stormwater channel 100, the stormwater channel foundation 200 and the beach shoulder retaining walls 400 on both sides. The front end of the bottom protection sheet 500 is provided with an anti-siltation riprap 600, which extends in the left-right direction. Specifically, the anti-siltation riprap is arranged between two beach shoulder retaining walls 400 in the left-right direction. Therefore, by combining with the landscape of the beach 10, the stormwater channel 100 is hidden below the surface of the beach 10, and at the same time, the beach shoulder retaining wall 400 takes into account the sand preservation requirements of the beach shoulder 30. On the one hand, the impact of the stormwater channel 100 discharge outlet on the landscape and the risk of siltation are reduced, and on the other hand, the formation of islands and reefs is promoted to further maintain the stability of the beach 10 around the discharge outlet.
[0036] In some specific embodiments of the present invention, the distance from the top of the stormwater channel 100 to the elevation of the beach 10 is greater than 1 m.
[0037] In some specific embodiments of the present invention, in order to increase the stability of the footing stone 300 and prevent erosion of the channel sidewall and lateral movement of the soil, the width of the footing stone 300 needs to be greater than one third of the width of the storm drain 100 .
[0038] In some specific embodiments of the present invention, a sand retaining wall 110 is disposed on the top of the storm drain 100, and the extension direction of the sand retaining wall 110 is perpendicular to the extension direction of the storm drain 100. Figure 1 and Figure 2 As shown, a sand retaining wall 110 is provided at the top of the storm drain 100 along the left and right directions. The sand retaining wall 110 can resist the sand on the beach shoulder 30 above the storm drain 100, thereby maintaining the slope of the beach shoulder 30 to protect the sandy soil of the beach 10 and reduce the risk of the beach 10 being eroded, lost or damaged.
[0039] In some specific embodiments of the present invention, the cross-sectional area of the storm drain foundation 200 gradually increases in a direction away from the storm drain 100. Figure 2 and Figure 3 As shown, the cross-sectional area of the stormwater channel 100 gradually increases from top to bottom, and the four sides of the stormwater channel foundation 200 extend outward in an inclined shape in a direction away from the stormwater channel 100 to form a stable platform structure, further improving the structural stability of the stormwater channel 100. Specifically, the stormwater channel foundation 200 includes a crushed stone cushion layer 210 and a base bed block stone layer 220, and the crushed stone cushion layer 210 and the base bed block stone layer 220 are arranged in sequence in a direction away from the stormwater channel 100, that is, the crushed stone cushion layer 210 and the base bed block stone layer 220 are arranged in sequence from top to bottom. Specifically, the thickness of the crushed stone cushion layer 210 is not less than 0.4m.
[0040] In some specific embodiments of the present utility model, the top elevation of the stormwater channel 100 is lower than the average low tide level of the beach 10 every day. Specifically, the top elevation of the stormwater channel 100 is at least 0.5m lower than the average low tide level of the beach 10 every day. When it cannot be guaranteed, i2 is adjusted to meet the requirements. It should be noted that the average low tide level of the beach 10 every day refers to the average value of the daily minimum water level observed on the beach 10 during a natural tidal cycle, which is determined based on the periodic changes of the tide. The average low tide level of the beach 10 every day is an important parameter for determining the location and range of the coastline, and can be used in aspects such as coastline planning, land use planning, coastal protection and management. Understanding the low tide water level helps to determine the stable area and possible erosion area of the beach 10, so as to take appropriate measures to protect the beach 10 and nearby land.
[0041] Therefore, when the stormwater channel 100 is located in areas such as the beach 10 or the seashore, it is necessary to discharge rainwater from nearby areas. If the top elevation of the stormwater channel 100 is higher than or close to the average low tide level of the beach 10, then during low tide in the tidal cycle, the outlet of the stormwater channel 100 may be blocked by seawater, and the rainwater cannot be discharged smoothly, resulting in water accumulation problems. By setting the top elevation of the stormwater channel 100 to be lower than the average low tide level of the beach 10, it can be ensured that at low tide, the outlet of the stormwater channel 100 is below the seawater level to prevent seawater from flowing back into the stormwater channel 100. In this way, even at low tide, the stormwater channel 100 can continue to discharge rainwater normally and keep the drainage system unobstructed. In addition, setting the top elevation of the stormwater channel 100 to be lower than the average low tide level of the beach 10 is also conducive to preventing seawater and waves from eroding the structure of the stormwater channel 100, reducing damage to the stormwater channel 100 and maintenance costs.
[0042] In some specific embodiments of the utility model, the beach shoulder retaining wall 400 is tilted. By tilting the retaining wall, the structural stability of the beach shoulder retaining wall 400 is improved, and the impact force of the wave on the beach shoulder retaining wall 400 is reduced. Specifically, when the wave hits the beach shoulder retaining wall 400, the tilt of the wall surface can disperse the energy of the wave, reduce the area of action of the impact force, and thus reduce the pressure on the beach shoulder retaining wall 400 structure.
[0043] In some specific embodiments of the present invention, in order to enhance the stability of the bottom protection sheet stone 500 and its ability to resist water flow impact, the cross-sectional area of the bottom protection sheet stone 500 gradually increases in the direction away from the storm drain 100. Figure 1 As shown, the range of the bottom protection sheet 500 is expanded on the plane. In this specific embodiment, the bottom protection sheet 500 expands symmetrically in the direction away from the rainwater channel 100, and the expansion angle is 45°. Therefore, when rainwater flows out of the rainwater channel 100, a water flow with a certain speed and impact force will be formed. When flowing through the bottom protection sheet 500, the speed and impact force of the water flow will be slowed down, so that it can pass through the bottom protection sheet 500 more smoothly, reduce the impact of the water flow impact, and provide more effective protection measures to prevent erosion and soil loss.
[0044] Specifically, the backing sheet stone 500 is concrete.
[0045] Specifically, the distance of the anti-siltation riprap 600 along the extending direction of the rainwater channel 100 is greater than the distance of the bottom protection sheet stone 500 along the extending direction of the rainwater channel 100.
[0046] In some specific embodiments of the present invention, in order to enhance the stability of the stormwater channel 100 and prevent bottom erosion, the bed block stone layer 220 is extended to the direction away from the stormwater channel 100 beyond the daily average low water line. Specifically, extending the bed block stone layer 220 beyond the daily average low water line can increase the base area of the stormwater channel 100, provide a larger support area, increase the stability of the stormwater channel 100 structure, reduce soil deposition and erosion at the bottom of the stormwater channel 100, and reduce the risk of scouring at the bottom of the channel.
[0047] The discharge structure of the stormwater channel 100 on the beach 10 is described in detail below with reference to a specific embodiment.
[0048] The height inside the stormwater channel 100 is h1, the height difference between the top surface of the stormwater channel 100 and the beach surface 10 is h2, the height of the sand retaining wall 110 is h3, the elevation difference of the beach surface 10 is H1, the average daily low tide level of the beach 10 is H2, the top elevation of the stormwater channel 100 is H3, the bottom elevation of the stormwater channel 100 is H4, the top elevation of the riverbed silt surface is H5, and the top elevation of the foot protection stone 300 is H6.
[0049] The slope of the bottom of the stormwater channel 100 before the beach boundary point 20 at the discharge outlet beach shoulder 30 is i1, the slope of the bottom of the stormwater channel 100 after the beach boundary point 20 at the discharge outlet beach shoulder 30 is i2, the slope of the beach shoulder 30 is i3, and the slope of the bottom protection stone 500 concrete is i4.
[0050] The length of the base bed stone layer 220 in front of the beach shoulder 30 and the beach surface boundary point 20 is L1, the length of the base bed stone layer 220 behind the beach shoulder 30 and the beach surface boundary point 20 is L2, the length of the discharge outlet bottom protection stone 500 along the left and right direction is L3, the length of the anti-siltation riprap 600 along the left and right direction is L4, the width of the stormwater channel 100 is B1, the width of the foot protection stone 300 is B2, and the width of the sand retaining wall 110 is L5.
[0051] Specifically, the width of the stormwater channel 100 is B1, and the internal heights are h1 and i1 which are determined by hydraulic calculation of the stormwater channel 100. Meanwhile, the elevation H1-H3 from the top of the stormwater channel 100 to the beach 10 is greater than 1 m.
[0052] Specifically, the distance between the daily average low tide level H2 of the beach 10 and the top elevation H3 of the stormwater channel 100 is 0.5 m, and at the same time, the length L2 of the subgrade rock layer 220 after the beach shoulder 30 beach boundary point 20 extends to 5 m beyond the daily average low water level line.
[0053] Specifically, to reduce sediment accumulation at the end of the discharge port, i4≥2i2.
[0054] Specifically, the width L5 and the height h3 of the sand retaining wall 110 are 0.5 m.
[0055] Specifically, the discharge port shoulder 30 gradual change retaining wall and the connecting footing block stone 300 use 250kg stones, the base bed block stone layer 220 uses 50kg stones, and the crushed stone cushion layer 210 has a thickness of 0.4m.
[0056] Specifically, the length L3 of the bottom protection stone 500 is determined according to 3H3-H4, and the length L4 of the discharge port anti-siltation riprap 600 is greater than the length L3 of the bottom protection stone 500.
[0057] Specifically, the top surface elevation H6 of the foot guard stone 300 is divided into two elevations. The 3m range at the end of the beach discharge outlet is H3+h3, and the rest should be less than H3-1m.
[0058] Specifically, the width B2 of the foot protection stone 300 is greater than 4 m and greater than one third of B1.
[0059] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A stormwater drainage outlet structure for a beach, characterized in that: include: A rainwater channel (100), wherein the rainwater channel (100) is arranged on the beach (10), and the rainwater channel (100) is located below the beach surface of the beach (10); A rainwater channel foundation (200), wherein the rainwater channel foundation (200) is arranged at the bottom of the rainwater channel (100), and the rainwater channel foundation (200) is used to provide support for the rainwater channel (100); Two foot protection blocks (300), the two foot protection blocks (300) are symmetrically arranged on both sides of the rainwater channel (100), the foot protection blocks (300) are arranged along the extension direction of the rainwater channel (100), the foot protection blocks (300) extend downward and span between the rainwater channel (100) and the rainwater channel foundation (200), and the foot protection blocks (300) are used to prevent the foundation quicksand at the bottom of the rainwater channel (100) from being lost; A beach shoulder retaining wall (400), wherein the number of the beach shoulder retaining walls (400) is the same as the number of the footing blocks (300), and each of the footing blocks (300) is provided with a corresponding beach shoulder retaining wall (400). The beach shoulder retaining wall (400) is located at one end of the footing blocks (300) close to the discharge end of the stormwater channel (100), and the beach shoulder retaining wall (400) is used to resist the upper beach shoulder sand of the stormwater channel (100); A backing stone (500), wherein the backing stone (500) is connected to the storm drain foundation (200), the backing stone (500) is located at the discharge end of the storm drain (100), and the backing stone (500) is used to enhance the structural stability of the storm drain (100); The anti-siltation riprap (600) is arranged at an end of the bottom protection sheet stone (500) opposite to the rainwater channel (100), and the anti-siltation riprap (600) is used to prevent the loss of quicksand.
2. The beach surface rainwater drain outlet structure according to claim 1 is characterized in that: A sand retaining wall (110) is provided on the top of the stormwater channel (100), and the extension direction of the sand retaining wall (110) is perpendicular to the extension direction of the stormwater channel (100).
3. The beach surface rainwater drain outlet structure according to claim 2 is characterized in that: The cross-sectional area of the storm drain foundation (200) gradually increases in a direction away from the storm drain (100).
4. The beach surface rainwater drain outlet structure according to claim 3 is characterized in that: The storm drain foundation (200) comprises a crushed stone cushion layer (210) and a bed block stone layer (220), wherein the crushed stone cushion layer (210) and the bed block stone layer (220) are arranged in sequence in a direction away from the storm drain (100).
5. The beach surface rainwater drain outlet structure according to claim 1 is characterized in that: The top elevation of the stormwater channel (100) is lower than the daily average low tide level of the beach (10).
6. The beach surface rainwater drain outlet structure according to claim 1 is characterized in that: The beach shoulder retaining wall (400) is arranged inclined.
7. The beach surface rainwater drain outlet structure according to claim 1 is characterized in that: The cross-sectional area of the bottom protection sheet stone (500) gradually increases in a direction away from the storm drain (100).
8. The beach surface rainwater drain outlet structure according to claim 1 is characterized in that: The distance at which the anti-siltation riprap (600) is arranged along the extension direction of the rainwater channel (100) is greater than the distance at which the bottom protection sheet stone (500) is arranged along the extension direction of the rainwater channel (100).
9. The beach surface rainwater drain outlet structure according to claim 1, characterized in that: The width of the foot protection stone (300) is greater than one third of the width of the storm drain (100).
10. The beach surface rainwater drain outlet structure according to claim 4, characterized in that: The bed block stone layer (220) extends in a direction away from the storm drain (100) to beyond the daily average low water level.