Slope drainage ditch structure

Abstract

The utility model relates to a drainage structure, in particular to a side slope drainage ditch structure which comprises an intercepting ditch and / or a side ditch arranged on a side slope, a self-dredging mechanism is arranged on one side in the intercepting ditch and / or the side ditch and comprises a water storage pool, a mud blocking wall is arranged on the top of the side wall of the side, facing the upstream side of the side slope, of the water storage pool, and the mud blocking wall is arranged on the side wall of the water storage pool. A hole is formed in the mud retaining wall, and a filtering device is arranged on the hole; a movable flashboard is arranged on the side wall of the side, facing the catchwater and / or the side ditch, of the reservoir, a floating ball is arranged in the reservoir, one end of a traction rope is connected with the floating ball, and the other end of the traction rope is connected with the movable flashboard through a pulley block. The anti-seepage drainage device is simple in structure, good in adaptability, good in anti-seepage drainage effect and low in maintenance cost, and has a self-dredging function.

Description

Technical Field

[0001] This utility model relates to a drainage structure, specifically a slope drainage ditch structure. Background Technology

[0002] With the development of infrastructure construction, slope drainage systems are becoming increasingly important in road engineering, water conservancy engineering, and mining engineering. As a key facility for intercepting surface runoff and preventing soil erosion, the structural design and drainage efficiency of slope drainage ditches directly affect the safety and service life of the project. However, existing slope drainage ditches generally suffer from the following technical problems:

[0003] (1) Difficulty in dredging: Traditional drainage ditches mostly adopt a fixed ditch structure, which is prone to shrinkage or even blockage due to siltation during long-term use. Especially under heavy rain or continuous rainfall conditions, a large amount of silt enters the ditch with the water flow, requiring frequent manual dredging operations, which is not only labor-intensive and inefficient, but also makes it difficult to ensure the continuous and stable operation of the drainage system. (2) Insufficient seepage prevention performance: The walls and bottoms of existing drainage ditches are mostly laid directly with rigid materials such as concrete or masonry, lacking effective seepage prevention measures. Under the action of seepage pressure, it is easy to cause leakage of the ditch wall or foundation settlement, leading to instability of the surrounding soil and exacerbating the risk of slope erosion. (3) Limited adaptability: For the drainage needs of multi-level slopes, traditional intercepting ditches are mostly of a single structural form (such as V-shaped trough or trapezoidal trough), which is difficult to take into account the drainage characteristics of different slope sections. For example, the upper slope has a large flow rate and fast velocity, while the bridle area needs to take into account both drainage and traffic functions. Traditional structures are difficult to achieve graded treatment and efficient connection. (4) Low level of automation: Existing drainage systems mostly rely on gravity flow for drainage and lack active regulation capabilities. When the water volume changes abruptly (such as a sudden flash flood), it is impossible to prevent the water level in the ditch from rising rapidly by dynamically adjusting the drainage volume, which can easily cause erosion damage or secondary disasters. Summary of the Invention

[0004] To address the aforementioned problems, this utility model proposes a slope drainage ditch structure that is simple in structure, highly adaptable, has good seepage prevention and drainage effects, low maintenance costs, and self-cleaning function.

[0005] The technical solution includes intercepting ditches and / or side ditches set on the slope. A self-cleaning mechanism is provided on one side of the intercepting ditches and / or side ditches. The self-cleaning mechanism includes a water storage tank. A mud retaining wall is provided on the top of the side wall of the water storage tank facing the upstream side of the slope. The mud retaining wall has holes, and a filter device is installed on the holes. A movable gate is provided on the side wall of the water storage tank facing the direction of the intercepting ditches and / or side ditches. A float is provided in the water storage tank. One end of the traction rope is connected to the float, and the other end is connected to the movable gate via a pulley system.

[0006] The filter device consists of a frame and two layers of filter screens inside the frame. The two layers of filter screens include an outer polyester fiber filter screen and an inner stainless steel filter screen. The bottom edge and two sides of the frame are covered with rubber pads.

[0007] The intercepting ditch and / or side ditch are laid with a surface layer, an impermeable layer and a base layer from top to bottom.

[0008] The intercepting ditch includes a V-shaped groove at the bottom, symmetrical ditch slopes on both sides, and a ditch platform connecting the V-shaped groove and the ditch slopes; the side ditch includes a V-shaped groove at the bottom and ditch slopes on both sides, wherein the upstream ditch slope is smoothly connected to one side of the V-shaped groove, and the downstream ditch slope is connected to the other side of the V-shaped groove via the ditch platform.

[0009] The slope is a multi-level slope, including at least the top of the slope, the slope surface, and the horse trail.

[0010] A drainage ditch is provided at the top of the slope, and a side ditch is provided on the inner side of the horse trail. The self-dredging mechanism is provided in both the drainage ditch and the side ditch.

[0011] The ditch has drainage holes that connect to the horse trail.

[0012] The shoulder of the horse trail is equipped with a horse trail sealing wall.

[0013] To address the problems existing in the background technology, the inventors made the following improvements:

[0014] 1) A self-cleaning mechanism is installed on one side of the intercepting ditch. A reservoir collects water flowing down the slope. A buoyant ball, linked to a pulley system, moves a gate. When the water level in the reservoir reaches a set threshold, the buoyant ball rises, pulling a traction rope through the pulley system to lift the gate, triggering periodic hydraulic flushing and achieving self-cleaning of the ditch. Once the water level drops back to the set threshold, the buoyant ball returns to its original position, pulling the traction rope through the pulley system to close the gate. The self-cleaning mechanism automatically triggers the cleaning action based on the liquid level difference, requiring no manual intervention and facilitating maintenance. A mud-retaining wall is installed on the top of the side wall of the reservoir facing the upstream slope to prevent sediment from entering the reservoir. A water-collecting filter screen is installed on the mud-retaining wall to separate rainwater and sediment from the slope, allowing them to flow smoothly into the reservoir for collection.

[0015] 2) The intercepting ditch adopts a layered waterproof structure, consisting of a surface layer, a seepage-proof layer, and a base layer laid sequentially from top to bottom. The surface layer can be a concrete surface layer (i.e., a water-conducting layer), the seepage-proof layer can be a polymer seepage-proof membrane or a clay seepage-proof layer, and the bottom layer is a compacted base layer constructed of mortar-grouted rubble. The three-layer structure works synergistically to effectively reduce the leakage rate and prevent seepage from eroding the next level of slope.

[0016] 3) In view of the characteristics of multi-level slopes, intercepting ditches and side ditches were designed. Intercepting ditches are more suitable for drainage at the top of the slope, while side ditches are more suitable for drainage between the upper slope and the horse trail. The flow velocity at the bottom of the V-shaped channel increases due to the cross-sectional contraction, which is conducive to the scouring of silt.

[0017] 4) This utility model has a simple structure, good adaptability, good seepage prevention and drainage effect, low maintenance cost, and self-cleaning function. It can adapt to different rainfall scour, greatly reduce the risk coefficient of slope scour and damage, and can achieve long-term and stable operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the cross-section of intercepting ditch 1.

[0020] Figure 3 This is a schematic diagram of the cross-section of side ditch 15.

[0021] Figure 4 This is a schematic diagram of the cross-section of Horse Track 8.

[0022] Figure 5 This is a cross-sectional structural diagram of the filter device 7.

[0023] Among them, 1. Interception ditch; 2. Water storage tank; 3. Movable gate; 4. Float ball; 5. Pulley block; 6. Mud retaining wall; 7. Filter device; 7-1. Polyester fiber filter screen; 7-2. Stainless steel filter screen; 7-3. Frame; 7-4. Rubber pad layer; 8. Walkway; 9. Drainage hole; 10. Walkway edge sealing wall; 11. Slope top; 12. Upper slope surface; 13. Lower slope surface; 14. Traction rope; 15. Side ditch; A. Surface layer; B. Seepage prevention layer; C. Foundation layer; D. V-shaped groove; E. Ditch side slope surface; F. Ditch side platform. Detailed Implementation

[0024] The present invention will be further explained below with reference to the accompanying drawings. For ease of description, the terms "upstream" and "downstream" are used with reference to the scouring direction of the water flow on the slope from top to bottom.

[0025] See Figure 1A water interception ditch and / or side ditch 15 are set on the slope. A self-cleaning mechanism is provided on one side of the water interception ditch 1 and / or side ditch 15. The self-cleaning mechanism includes a water storage tank 2 for storing water. A mud retaining wall 6 is provided on the top of the side wall of the water storage tank 2 facing the upstream side of the slope to block the mud and sand washed from the upstream side of the slope. A filter device 7 is installed on the mud retaining wall 6 to filter the mud and sand, so that the water coming from the upstream side of the slope can flow into the water storage tank 2 through the water collection filter screen. Preferably, the filter device consists of a frame 7-3 and two layers of filter screen installed in the frame 7-3. The two layers of filter screen include an outer polyester fiber filter screen 7-1 and an inner stainless steel filter screen 7-2. Preferably, the frame 7-3 is composed of four square timbers spliced ​​together, wherein the bottom edge and the two sides are covered with a rubber pad layer 7-4. The water collection filter screen 7 consists of an outer stainless steel filter screen 7-1 and an inner polyester fiber filter screen 7-2. The inner stainless steel filter screen 7-1 has higher strength and can better withstand pressure, while the inner polyester fiber filter screen 7-2 can filter water better. The side wall of the water storage tank 2 facing the intercepting ditch 1 and / or the side ditch 15 has a movable gate 3, which can be driven by external force to produce a lifting action, realizing the water storage tank 2's water storage and discharge. The water storage tank 2 is equipped with a float 4, which can move with the water in the water storage tank 2 under the action of buoyancy. The water level changes and rises / falls; one end of the traction rope 14 is connected to the float 4, and the other end is connected to the movable gate 3 via the pulley group 5. The rise and fall of the float 4 pulls the traction rope 14, generating a force. The pulley group 5 changes the direction of this force, ultimately causing the movable gate 3 to be raised and opened when the water level in the reservoir 2 rises to a set value, releasing the water in the reservoir 2 and using the liquid level difference to flush the intercepting ditch 1, achieving a self-cleaning effect. When the water level in the reservoir 2 drops, the movable gate 3 descends until the reservoir 2 is closed again. The specific number and installation position of the pulleys in the pulley group 5 can be reasonably designed according to actual needs to achieve the above-mentioned action process. This is existing technology and will not be described in detail. Those skilled in the art can also adjust the length of the traction rope 14 to control the timing of the opening and closing of the movable gate 3 (i.e., the set value). If the water level changes below the set value, the float 4 will not exert a force on the traction rope 14, thus preventing the movable gate 3 from rising.

[0026] by Figure 2 For example, the intercepting ditch is laid with a surface layer A, an impermeable layer B, and a base layer C from top to bottom. For instance, the surface layer A can be a concrete surface layer (i.e., a water-conducting layer), the impermeable layer B can be a polymer impermeable membrane or a clay impermeable layer, and the bottom layer C is a rammed base layer constructed of masonry blocks. The three-layer structure works together to effectively improve the overall strength of the intercepting ditch and reduce the leakage rate.

[0027] See Figure 2 The intercepting ditch 1-1 includes a V-shaped groove D at the bottom, symmetrical ditch slopes E on both sides, and a ditch platform F connecting the V-shaped groove D and the ditch slopes E; see also Figure 3 The side ditch 15 includes a V-shaped groove D at the bottom and ditch slopes E on both sides. The upstream ditch slope E is smoothly connected to one side of the V-shaped groove D (in this embodiment, the slope of the upstream ditch slope E is the same as that of one side of the V-shaped groove D, thus forming a straight line, which facilitates better collection of water from the upper slope 12). The downstream ditch slope E is connected to the other side of the V-shaped groove D via the ditch platform F.

[0028] The V-shaped channel D structure at the bottom is designed to increase the flow velocity caused by the cross-sectional contraction at the bottom of the V-shaped channel, which is conducive to the scouring of silt. The channel platform F connects the V-shaped channel D and the sloping surface E of the channel wall, which can form a secondary vortex in the boundary layer of the channel wall, which is conducive to capturing fine particles and achieving the purpose of intercepting silt. After the silt is intercepted to the intercepting ditch, it can be flushed and cleaned by the self-cleaning mechanism.

[0029] See Figure 1 In another embodiment, the slope can be a multi-level slope, consisting of a slope crest 11, an upper-level slope surface 12, a walkway 8, and a lower-level slope surface 13, from top to bottom. A ditch 1 is provided at the slope crest 11, and a side ditch 15 is provided inside the walkway 8. Both the intercepting ditch 1 and the side ditch 15 are equipped with a self-cleaning mechanism, the structure and working principle of which are as described above. See also... Figure 4 The ditch slope E downstream of the ditch 15 has a drainage hole 9 that communicates with the horse trail 8, which can realize lateral drainage and wash the horse trail; a horse trail sealing wall 10 is provided between the shoulder of the horse trail 8 and the lower slope 13.

[0030] Furthermore, in slopes of more advanced levels, side ditches and self-dredging mechanisms can be flexibly installed as needed.

Claims

1. A side slope drainage ditch structure including a cut-off trench and / or a side trench provided on a side slope, characterized by, The self-dredging mechanism is arranged on one side of the water interception ditch and / or the side ditch, and comprises a water storage pool, a mud retaining wall is arranged on the top of the side wall of the water storage pool on the upstream side of the side slope, a hole is formed in the mud retaining wall, and a filter device is arranged on the hole; an active gate is arranged on the side wall of the water storage pool on the side of the water interception ditch and / or the side ditch, a floating ball is arranged in the water storage pool, one end of a traction rope is connected to the floating ball, and the other end of the traction rope is connected to the active gate through a pulley block.

2. The edge drain structure of claim 1, wherein The filter device is composed of a frame and two layers of filter screens arranged in the frame, the two layers of filter screens comprise an outer polyester fiber filter screen and an inner stainless steel filter screen, and the bottom edge and the two side edges of the frame are wrapped with rubber pads.

3. The edge drain structure of claim 1, wherein The water interception ditch and / or the side ditch are sequentially paved with a surface layer, an anti-seepage layer and a foundation layer from top to bottom.

4. The edge drain structure of any one of claims 1-3, wherein, The water interception ditch comprises a V-shaped groove at the bottom, slope surfaces at the two sides and slope platforms connecting the V-shaped groove and the slope surfaces, and the side ditch comprises a V-shaped groove at the bottom and slope surfaces at the two sides, wherein the upstream slope surface is smoothly connected to one side of the V-shaped groove, and the downstream slope surface is connected to the other side of the V-shaped groove through the slope platform.

5. The edge drain structure of claim 4, wherein The side slope is a multi-stage side slope, and at least comprises a top, a slope surface and a horse path.

6. The edge drain structure of claim 5, wherein The top is provided with a water interception ditch, the inner side of the horse path is provided with a side ditch, and the water interception ditch and the side ditch are both provided with the self-dredging mechanism.

7. The edge drain structure of claim 5, wherein The slope surface of the side ditch is provided with a drainage hole communicating with the horse path.

8. The edge drain structure of any one of claims 5-7, wherein, The shoulder of the horse path is provided with a horse path edge sealing wall.

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