Box culvert structure for landscape lake
By incorporating an overflow weir and a water-blocking plate into the box culvert structure of the landscape lake, the problem of water level drop during floodgate maintenance was solved, enabling a safe and economical maintenance process, reducing water and electricity costs, and extending equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 何忠艳
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-12
AI Technical Summary
In landscape lake design, the water level needs to be lowered below the bottom of the floodgate during maintenance, which increases water and electricity costs and affects the maintenance of the landscape water level.
The system employs a combination of an overflow weir and a water-blocking plate. The water-blocking plate blocks the lake water when it is higher than the top of the overflow weir. During maintenance, the lake water level is kept constant, and drainage is carried out through the overflow weir to avoid direct impact on the water-blocking plate, thus ensuring safe maintenance.
This allows for safe maintenance of the floodgates without affecting the lake's water level, reducing water and electricity costs and improving the safety and convenience of maintenance.
Smart Images
Figure CN224227740U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to water conservancy technology, and in particular to a box culvert structure for landscape lakes. Background Technology
[0002] In landscape lake design, box culverts (rectangular cross-section culverts) are common drainage or water conveyance structures, mainly used to control water levels, connect water systems, or cope with rainstorm drainage.
[0003] Box culverts typically control water levels through floodgates installed inside them. When the floodgates need maintenance, the water level must be lowered below the bottom of the floodgates to ensure the safety of personnel during maintenance. However, when operating lake landscapes and resorts, the landscape lakes need to maintain a constant water level for a long time. When the water level drops, water needs to be replenished, which increases water costs and electricity costs for pumping station operation every time the floodgates are maintained. Utility Model Content
[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a box culvert structure for landscape lakes. It solves the problem that when a floodgate needs maintenance, the water level needs to be lowered below the bottom of the floodgate to ensure the safety of personnel during maintenance. However, when operating a lake landscape or resort, the landscape lake needs to maintain a constant water level for a long time, and water needs to be replenished when the water level drops. This also leads to increased water costs and electricity costs from pump station operation every time the floodgate is maintained.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a box culvert structure for landscape lakes, including a culvert and an openable floodgate located at the outlet end of the culvert. An overflow weir is provided in the middle of the inlet end of the culvert. Symmetrical concave plates are provided on the side wall of the overflow weir and the inner wall of the culvert. A removable water-blocking plate is provided in the concave plate, and the upper end of the water-blocking plate is higher than the upper end of the overflow weir.
[0006] Furthermore, a maintenance passage is provided at the top of the culvert, with one side of the maintenance passage corresponding to the back side of the water-blocking plate.
[0007] Furthermore, a lifting lug is provided at the upper end of the water-blocking plate, and a driving component is installed on the upper end face of the culvert. The output end of the driving component extends into the inner cavity of the culvert and connects with the lifting lug.
[0008] Furthermore, a water-stopping rubber is provided between the concave plate and the water-blocking plate.
[0009] Furthermore, bolts are provided on both sides of the concave plate, with one end of the bolt extending into the inner cavity of the concave plate. As the bolt end moves into the inner cavity of the concave plate, the inner wall of the concave plate compresses the water-stop rubber.
[0010] Furthermore, a central partition is provided in the middle of the culvert cavity, and a floodgate is located between the side wall of the central partition and the inner wall of the culvert.
[0011] Furthermore, the central partition has a first gap between the side of the overflow weir corresponding to the back of the overflow weir, allowing multiple people to pass through.
[0012] Furthermore, a fish-blocking net is installed next to the water-facing side of the overflow weir. The fish-blocking net, the concave plate, and the water-blocking plate are all made of stainless steel.
[0013] Furthermore, one side of the top of the culvert has a cut-off section located above the overflow weir and the water-blocking plate, and a cover plate is laid on the cut-off section.
[0014] Furthermore, the maintenance access is located between the cover plate and the opposite side edge of the culvert.
[0015] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, by combining the overflow weir and the water-blocking plate to block the lake water entering the culvert inlet, the lake water outside the culvert inlet is higher than the bottom of the culvert, and maintenance personnel can still enter the culvert to carry out maintenance on the flood discharge gate inside, and the maintenance does not affect the lake water level.
[0016] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description
[0017] Figure 1 This is a plan view of Embodiment 1 of this utility model.
[0018] Figure 2 This is a top plan view of the inner cavity of the culvert in Embodiment 1 of this utility model.
[0019] Figure 3 This is Embodiment 1 of the present utility model. Figure 2 Enlarged view of point A.
[0020] Figure 4 This is a top view of the cover plate of Embodiment 1 of this utility model.
[0021] Figure 5 This is a schematic view of Embodiment 1 of this utility model.
[0022] Explanation of reference numerals in the attached diagram:
[0023] First spacing 1;
[0024] Culvert 10, maintenance passage 11, central partition 12, cut-off 13, cover plate 14, floodgate 20, overflow weir 30;
[0025] 40. Concave plate 41. Water-blocking plate 41. Lifting lug 411. Driving component 42. Water-stopping rubber 43. Bolt 44;
[0026] Fish-blocking net 50. Detailed Implementation
[0027] Please refer to Figure 1-5 As shown, it illustrates the specific structure of a preferred first embodiment of the present invention, which is a box culvert structure for landscape lakes, including a culvert 10 and an openable floodgate 20 located at the outlet end of the culvert 10. An overflow weir 30 is provided in the middle of the inlet end of the culvert 10. The side wall of the overflow weir 30 and the inner wall of the culvert 10 are provided with symmetrical concave plates 40. A removable water-blocking plate 41 is provided in the concave plate 40, and the upper end of the water-blocking plate 41 is higher than the upper end of the overflow weir 30. The box culvert structure, originally designed for landscape lakes, uses the normal water level of the lake as the top elevation of the water-blocking plate 41. During routine operation and maintenance, the water-blocking plate 41 is normally closed, while the floodgate 20 at the outlet of the culvert 10 is normally open. Compared to existing technologies that simply use a floodgate, which results in one side of the floodgate facing the water and requires operators to release water before maintenance, the combination of the overflow weir 30 and the water-blocking plate 41 blocks the lake water entering the inlet of the culvert 10. Even when the lake water outside the inlet of the culvert 10 is higher than the bottom of the culvert 10, maintenance personnel can still enter the culvert 10 to perform maintenance on the floodgate 20, and this maintenance does not affect the lake water level.
[0028] It should be noted that the coordination between the overflow weir 30 and the water-blocking plate 41 allows for maximum elevation of the water-blocking plate 41 and the floodgate 20 during heavy rain to discharge floodwater and prevent upstream flooding due to untimely discharge. When the lake water level is higher than the landscape water level, the water-blocking plate 41 lowers to intercept the lake water. Since the lake water level is higher than the top of the overflow weir 30, the lake water can be discharged through the overflow weir 30. At the same time, the floodgate 20 is raised to allow the lake water to flow away. In this case, the floodgate 20 does not directly block the water, but rather uses the lower water-blocking plate 41 at the front to prevent excessive lake water from directly hitting the water-blocking plate 41 and causing damage due to high-speed water flow. When the lake water level is low or when it is desired to store the lake water at a high level, the water-blocking plate 41 and the floodgate 20 are closed simultaneously to prevent the lake water from flowing out, thus preserving the lake water and achieving the desired landscape effect.
[0029] For example, a maintenance passage 11 is provided at the top of the culvert 10, with one side of the maintenance passage 11 corresponding to the back side of the water-blocking plate 41. The maintenance passage 11 facilitates maintenance personnel to enter the culvert 10 to maintain the flood discharge gate 20 at the outlet of the culvert 10, as well as to carry out routine maintenance on the water-blocking plate 41.
[0030] For example, the upper end of the water-blocking plate 41 is provided with a lifting lug 411, and the upper surface of the culvert 10 is equipped with a driving component 42. The output end of the driving component 42 extends into the inner cavity of the culvert 10 and connects with the lifting lug 411. The driving component 42 can be a winch. Because the hook of the winch is connected to the lifting lug 411, before a rainstorm, the winch can be activated according to the rainstorm warning and rainfall amount to lift the water-blocking plate 41 upward, drain some lake water in advance, and provide space for accommodating lake water during rainfall.
[0031] For example, a water-stop rubber 43 is provided between the concave plate 40 and the water-blocking plate 41. When the water-blocking plate 41 is subjected to the pressure from the lake water, the leakage within the range of the water-stop rubber 43 does not exceed 0.1L / s, and it can work in an environment of -20°~50° to increase the water-blocking effect of the water-blocking plate 41.
[0032] For example, bolts 44 are provided on both sides of the concave plate 40. One end of the bolt 44 extends into the inner cavity of the concave plate 40. As one end of the bolt 44 moves into the inner cavity of the concave plate 40, the inner wall of the concave plate 40 compresses the water-stop rubber 43. The bolt 44 is a side-pressure screw, which is used to press down and seal the water-blocking plate 41. By tightening the bolt 44, the water-blocking plate 41 is pressed into the concave plate 40, and at the same time, it works with the water-stop rubber 43 to achieve a good sealing effect and prevent water penetration.
[0033] For example, a central partition 12 is provided in the middle of the inner cavity of the culvert 10, and a floodgate 20 is provided between the side wall of the central partition 12 and the inner wall of the culvert 10. The central partition 12 can reduce the span of the top slab and side wall, improve the structural deformation resistance, and disperse the upper earth pressure, water pressure or vehicle load (such as when the top of the box culvert is a road), avoiding local stress concentration.
[0034] For example, the partition 12 has a first gap 1 between one side of the overflow weir 30 and the back of the overflow weir 30, allowing multiple people to pass through. The first gap 1 allows multiple maintenance personnel to carry maintenance equipment to simultaneously inspect two or more floodgates 20 separated by the partition 12.
[0035] For example, a fish-blocking net 50 is provided next to the water-facing side of the overflow weir 30. The fish-blocking net 50, the concave plate 40, and the water-blocking plate 41 are all made of stainless steel. The stainless steel construction allows the water-blocking plate to be used for a longer period of time, thereby increasing the service life of the box culvert structure originally intended for landscape lakes.
[0036] For example, the top of the culvert 10 has a cut-out 13 on one side, which is located above the overflow weir 30 and the baffle plate 41, and a cover plate 14 is laid on the cut-out 13. The cut-out 13 and the cover plate 14 are provided so that when the baffle plate 40 or the baffle plate 41 fails, maintenance personnel can remove the cover plate 14 to replace or repair the baffle plate 41 from above.
[0037] It should be noted that greenery can also be laid on the cover plate 14 to enhance the overall aesthetics.
[0038] The maintenance passage 11 is located between the cover plate 14 and the opposite side edge of the culvert 10.
[0039] The box culvert structure used for landscape lakes also has at least the following effects;
[0040] An overflow weir 30 is directly built at the inlet end of the box culvert and a water-blocking plate 41 is installed to serve as a maintenance gate. This method is convenient to construct, has low cost, and provides conditions for the non-drainage construction of the downstream flood discharge gate 20 after water blocking.
[0041] In addition, if a floodgate is designed directly to block water instead of a water-blocking plate at the front, the floodgate is located on the water-facing side of the lake. The construction of the gate and gate chamber requires piling and foundation treatment, which increases the construction cost. The opening and closing of the floodgate requires gate chamber space, and the concrete structure of the gate chamber extends into the lake, affecting the environmental landscape. Directly constructing the floodgate requires a large construction space and cofferdams, which increases the cost even more.
[0042] For example;
[0043] Before the installation of the water-blocking plate 41 and the overflow weir 30 in this application, there is only the floodgate 20 and other supporting structures in the culvert. This causes the water in the lake to be in direct contact with one side of the floodgate 20. At this time, maintenance of the floodgate 20 requires opening the floodgate 20 to release the lake water first, so that the water level of the lake is lowered to be parallel to the bottom of the floodgate 20 before maintenance personnel can enter the site to carry out maintenance.
[0044] The addition of a water-blocking plate 41 and an overflow weir 30 to the culvert 10 can prevent a large amount of lake water from flowing into the culvert 10 through the water-blocking plate 41, while the overflow weir 30 is used to maintain the lake water level. At this time, there is a height difference between the lake water blocked by the overflow weir 30 and the bottom of the culvert 10 and the bottom of the culvert 10. That is, the culvert 10 may be in a state of no water, or a small flow of water through the overflow weir 30. These small flows of water will not affect the safety of maintenance personnel when they are repairing the floodgate 30. Thus, maintenance personnel can safely enter the culvert 10 to repair the floodgate 30 without opening the water-blocking plate 41 to release water to lower the lake water level.
[0045] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A box culvert structure for a landscape lake, comprising a culvert (10) and an openable floodgate (20) located at the outlet end of the culvert (10), characterized in that: An overflow weir (30) is provided in the middle of the inlet end of the culvert (10). The side wall of the overflow weir (30) and the inner wall of the culvert (10) are provided with symmetrical concave plates (40). A pluggable water-blocking plate (41) is provided in the concave plate (40). The upper end of the water-blocking plate (41) is higher than the upper end of the overflow weir (30).
2. The box culvert structure for landscape lakes according to claim 1, characterized in that: The culvert (10) is provided with a maintenance passage (11) at the top, and one side of the maintenance passage (11) corresponds to the back side of the water-blocking plate (41).
3. A box culvert structure for landscape lakes according to claim 1, characterized in that: The water-blocking plate (41) is provided with a lifting lug (411) at the upper end, and a driving component (42) is installed on the upper surface of the culvert (10). The output end of the driving component (42) extends into the inner cavity of the culvert (10) and connects with the lifting lug (411).
4. A box culvert structure for landscape lakes according to claim 1, characterized in that: A water-stop rubber (43) is provided between the concave plate (40) and the water-blocking plate (41).
5. A box culvert structure for landscape lakes according to claim 4, characterized in that: Bolts (44) are provided on both sides of the concave plate (40). One end of the bolt (44) extends into the inner cavity of the concave plate (40). As the one end of the bolt (44) moves into the inner cavity of the concave plate (40), the inner wall of the concave plate (40) compresses the water-stop rubber (43).
6. A box culvert structure for landscape lakes according to claim 1, characterized in that: The culvert (10) has a central partition (12) in the middle of its inner cavity, and the floodgate (20) is located between the side wall of the central partition (12) and the inner wall of the culvert (10).
7. A box culvert structure for landscape lakes according to claim 6, characterized in that: The partition (12) has a first gap (1) between one side of the overflow weir (30) and the back of the overflow weir (30) to allow multiple people to pass through.
8. A box culvert structure for landscape lakes according to claim 1, characterized in that: The overflow weir (30) is provided with a fish-blocking net (50) on the water-facing side. The fish-blocking net (50), the concave plate (40), and the water-blocking plate (41) are all stainless steel products.
9. A box culvert structure for landscape lakes according to claim 2, characterized in that: The culvert (10) has a cut-out (13) on one side of its top, the cut-out (13) being located above the overflow weir (30) and the water-blocking plate (41), and a cover plate (14) is laid on the cut-out (13).
10. A box culvert structure for a landscape lake according to claim 9, characterized in that: The maintenance passage (11) is located between the cover plate (14) and the opposite side edge of the culvert (10).