Mountain torrent ditch energy dissipation and scour prevention treatment structure

Abstract

The utility model belongs to the technical field of energy dissipation and flood discharge, and particularly discloses a mountain torrent ditch energy dissipation and scour prevention treatment structure which comprises a step arranged at the bottom of a ditch body of a mountain torrent ditch and arranged in the water flow direction of the mountain torrent ditch. A plurality of baffle ridges distributed at intervals are sequentially arranged in a ditch body of the mountain torrent ditch in the water flow direction of the mountain torrent ditch. And a drainage channel is arranged between one side of the baffle sill and one side of the ditch body of the mountain torrent ditch. The baffle sill can disperse water flow, reduce water flow velocity, reduce water flow impact force, avoid artificial high water level, prevent the baffle sill from being destroyed by washing, and avoid geological disasters.

Description

Technical Field

[0001] The utility model relates to the technical field of energy dissipation and flood discharge, in particular to an energy dissipation and anti-scour management structure for a mountain torrent ditch. Background Art

[0002] Hilly and plateau areas are prone to sudden flash floods. Natural river ditches have large longitudinal slopes, large flow rates and fast velocity. Most flash flood ditches are natural river channels and natural slopes. The river channels and slopes are severely eroded, which can easily lead to continuous erosion of the river channels and cause the collapse of natural slopes, resulting in flash floods and serious threats to the safety of buildings and residents along the river.

[0003] Flash flood gullies typically have steep channel gradients, resulting in large, rapid flash flood flows and severe erosion. Traditional flash flood gully management often utilizes costly concrete structures. Common flash flood containment structures include solid dams (with drainage holes in the dam body) that intercept the entire riverbed, comb dams, etc. However, the drainage holes occupy a relatively small cross-section of the riverbed, leading to the problem of artificially raising the riverbed water level. Flash flood gullies are also prone to sudden debris flow disasters. These powerful debris flows can directly impact high-rise dams (typically 5-10 meters high) that intercept debris flows across their entire cross-section and are easily destroyed. Utility Model Content

[0004] The utility model provides a mountain torrent ditch energy dissipation and anti-scour management structure, which aims to disperse water flow, reduce water flow impact force, avoid energy dissipation sills from being washed away, and avoid geological disasters.

[0005] The utility model is realized through the following technical solutions: a flash flood ditch energy dissipation and anti-scour management structure, comprising steps arranged at the bottom of the flash flood ditch and arranged along the water flow direction of the flash flood ditch; a plurality of energy dissipation sills distributed at intervals are arranged in sequence in the ditch body of the flash flood ditch along the water flow direction of the flash flood ditch; a drainage channel is provided between one side of the energy dissipation sill and one side of the ditch body of the flash flood ditch.

[0006] In this plan, the steps set along the flow direction of the mountain torrent ditch can disperse the water flow, reduce the flow velocity, and play a role in energy dissipation and speed reduction. At the same time, this plan is a non-one-time interception of solid objects. By setting up multiple energy dissipation sills, water release and stone blocking can be achieved step by step, which increases the stability of the energy dissipation sills, reduces the impact force of debris flows, avoids the energy dissipation sills from being washed away, and avoids debris flow disasters.

[0007] A drainage channel is provided on one side of the stilling sill and the mountain torrent ditch, so that the water flow can enter the lower riverbed through the drainage channel of the stilling sill structure, or directly overflow the stilling sill when the water level is high during the flood season, thereby reducing the flow rate of mountain torrents, reducing the scouring of the river channel and the impact on the stilling sill, and avoiding geological disasters such as secondary bank collapse and mudslides caused by scouring.

[0008] Furthermore, the water-facing side and the water-receiving side of the stilling sill are inclined surfaces inclined to each other.

[0009] Beneficial effect: The mutually inclined slopes on the water-facing side and the water-receiving side of the stilling sill make the stilling sill form a stable structure, thereby improving the structural strength of the stilling sill and thus improving the ability to resist the impact of water flow.

[0010] Furthermore, an energy dissipation pool is formed between the water-facing side of the energy dissipation slope and both sides of the ditch body of the mountain torrent ditch and adjacent steps.

[0011] Beneficial effects: The energy dissipation pool in this scheme can buffer the water flow in the pool, further reduce the flow rate of mountain torrents, and reduce the scouring of the river channel.

[0012] Furthermore, the top of the energy dissipation sill is flat.

[0013] Beneficial effects: The top of the stilling sill in this solution is flat, which can reduce the height of the stilling sill. Such a low stilling sill is less impacted by the water flow, which can increase stability. At the same time, it can be directly flooded when the water level is high during the flood season without hindering flood flow.

[0014] Furthermore, a buffer pad is provided on the water-facing side of the stilling sill.

[0015] Beneficial effects: The buffer pads in this solution can reduce the impact damage of solid objects and increase the protection of the force dissipation sill.

[0016] Furthermore, the upper portion of the stilling sill is provided with drainage holes penetrating the water-facing side and the water-retaining side thereof.

[0017] Beneficial effect: The setting of the drainage holes in this solution can reduce the impact of water flow on the stilling sill, while maintaining the downward flow of water.

[0018] Furthermore, the drainage holes are arranged to be inclined downward from the water-facing side to the water-retaining side of the stilling sill.

[0019] Beneficial effect: Such a setting can guide the water flow, so that the water flows out from the back water side of the energy dissipation sill along the drainage hole, reducing water splashing.

[0020] Furthermore, the steps are of gabion stone cage structure.

[0021] Beneficial effects: The stepped gabion stone cage structure in this scheme replaces the traditional concrete structure for anti-scour protection, and uses gabion stone cages that adapt to the bank slope to protect the bank from collapse, thereby reducing the project cost.

[0022] Furthermore, a stilling sill foundation is provided at the bottom of the stilling sill, and the stilling sill foundation is embedded in the bottom and side wall of the mountain torrent ditch. The side of the stilling sill away from the drainage channel is embedded in the side wall of the mountain torrent ditch.

[0023] Beneficial effects: The energy dissipation sill foundation in this scheme can facilitate the construction of the energy dissipation sill and provide stable support for the energy dissipation sill. The energy dissipation sill and the energy dissipation sill foundation are embedded in the side wall of the mountain torrent ditch, which can improve the stability and firmness between the two and the ditch body of the mountain torrent ditch.

[0024] Furthermore, the drainage channels of two adjacent energy dissipation sills are arranged in a staggered manner.

[0025] Beneficial effect: The drainage channels between adjacent stilling sills in this scheme are staggered, which changes the drainage flow direction of each level of stilling sill, realizes the dispersion of water flow, and the drainage channels staggered on the side can avoid raising the river water level as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a top view of an embodiment of a mountain torrent ditch energy dissipation and anti-scour management structure of the utility model;

[0028] Figure 2 It is a cross-sectional view of an embodiment of a mountain torrent ditch energy dissipation and anti-scour management structure of the present utility model.

[0029] Markings and corresponding parts names in the accompanying drawings:

[0030] Step 1, energy dissipation sill foundation 2, energy dissipation sill 3, energy dissipation pool 4, drainage hole 5, buffer pad 6, drainage channel 7, original ditch bottom line 8, slope protection 9. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0032] like Figure 1-Figure 2 As shown, this embodiment provides a flash flood ditch energy dissipation and anti-scour management structure, including a step 1 arranged at the bottom of the flash flood ditch and along the water flow direction of the flash flood ditch, wherein the step 1 is arranged along the original bottom line 8 of the flash flood ditch and is located below the original bottom line 8.

[0033] In this embodiment, the step 1 is a gabion stone cage structure, that is, the step 1 is formed by gabion stone cages. The gabion stone cages used in the utility model to form the step 1 replace the traditional step 1 formed by a concrete structure. It has strong environmental adaptability, low engineering cost, and good anti-scouring effect. In this embodiment, the step 1 type gabion stone cage is used to protect the bottom and reduce scouring. At the same time, the slope protection 9 on both sides of the ditch body of the mountain torrent ditch adopts gabion stone cages adapted to the bank slope to protect the bank and prevent the bank from being trampled, thereby reducing the engineering cost.

[0034] A plurality of energy-dissipating sills 3 are arranged in sequence along the water flow direction of the mountain torrent ditch in the ditch body. The plurality of energy-dissipating sills 3 are distributed at intervals, and do not intercept solid objects at one time, but intercept stones and drain water step by step, so as to disperse the water flow and reduce the water flow velocity, and can reduce the impact on the energy-dissipating sills 3, thereby protecting the energy-dissipating sills 3 and increasing the stability of the energy-dissipating sills 3.

[0035] A drainage channel 7 is provided between one side of the stilling bank 3 and one side of the ditch body of the mountain torrent ditch. Figure 1 As shown, in this embodiment, the drainage channels 7 of two adjacent stilling sills 3 are staggered, thus distributing the water flow. In this embodiment, the stilling sills 3 are 1-2 meters high, and their width accounts for 1 / 2-3 / 4 of the riverbed width. The drainage channels 7 in this embodiment are large-section, formed by the gaps between the stilling sills 3 and the sidewalls of the mountain torrent ditch. This large size makes blockages less likely, and even if blockage occurs, floodwaters can overflow.

[0036] In the existing technology, a 5-10m high retaining dam is generally used to block the water flow, which is equivalent to building a small dam and raising the original river water level. The flash flood ditch energy dissipation and anti-scour management structure in the utility model only needs to be 1-2m higher than the original riverbed. By setting multiple energy dissipation sills 3 and staggered drainage channels 7, the river water level can be kept constant and the impact force on the energy dissipation sills 3 can be reduced.

[0037] like Figure 2 As shown, in this embodiment, the water-facing side and the water-repelling side of the stilling sill 3 are inclined surfaces inclined to each other, and the top of the stilling sill 3 is a plane, so that the longitudinal section of the stilling sill 3 forms a trapezoidal structure. In this embodiment, an energy dissipation pool 4 is formed between the water-facing side of the stilling sill 3 and both sides of the ditch body of the mountain torrent ditch and the adjacent steps 1.

[0038] In this embodiment, a stilling sill foundation 2 is provided at the bottom of the stilling sill 3, and the stilling sill foundation 2 is embedded in the bottom and side walls of the mountain torrent ditch. The stilling sill foundation 2 and the stilling sill 3 are formed by pouring concrete, and the side of the stilling sill 3 away from the drainage channel 7 is embedded in the side wall of the mountain torrent ditch. This can improve the firmness and reliability between the stilling sill foundation 2 and the stilling sill 3 and the mountain torrent ditch.

[0039] Furthermore, in another embodiment, a buffer pad 6 is provided on the water-facing side of the energy dissipation sill 3 . The buffer pad 6 in this embodiment is made of rubber. The buffer pad 6 can reduce direct impact damage to the energy dissipation sill 3 caused by fixed objects.

[0040] Furthermore, in another embodiment, drainage holes 5 are provided on the upper portion of the stilling sill 3, extending through both the upstream and downstream sides. Multiple drainage holes 5 are provided, spaced apart, and arranged downwardly from the upstream side of the stilling sill 3 toward the downstream side. Drainage channel 7 and drainage holes 5 maintain a water channel, mitigating water flow impacts without raising the overall water level in the river.

[0041] The utility model adopts a combination of a non-full-section intercepting low-type energy dissipation sill 3, a staggered drainage channel 7, an energy dissipation pool 4, and a step 1-type gabion stone cage to reduce the flow velocity. The utility model adopts the gabion stone cage step 1 energy dissipation method to reduce water scouring, and then the water flows into the energy dissipation pool 4, where the water flow is buffered. The water flow can enter the lower riverbed through the drainage channel 7 of the non-full-section intercepting low-type energy dissipation sill 3 structure, or directly overflow over the energy dissipation sill 3 during high water levels during flood season, thereby reducing the flow velocity of mountain torrents, reducing the scouring effect on the river channel, and avoiding geological disasters such as secondary bank collapse caused by scouring.

[0042] The width of the energy dissipation sill 3 adopted in the present invention is only 1 / 2-3 / 4 of the width of the riverbed, and the height is only 1-2m. The arrangement of the staggered drainage channels 7 makes it possible for the present invention to be a mountain torrent ditch energy dissipation and anti-scour management structure without raising the riverbed water level. The energy dissipation sill 3 intercepts large stones step by step at the bottom, playing the role of stone blocking and drainage; the energy dissipation sill 3 adopted in the present invention is subjected to small impact force and is not easily destroyed, and the buffer pad 6 is arranged on the water-facing surface of the energy dissipation sill 3 to reduce the impact damage of solid objects, thereby increasing the protection of the energy dissipation sill 3.

[0043] The utility model adopts a non-full-section interception low-type energy dissipation sill 3 structure to effectively disperse water flow, reduce water flow velocity, and do not need to raise the river water level. In addition, the utility model adopts the energy dissipation sill 3 to intercept debris flow solids step by step, and the energy dissipation pool 4 can store solids step by step; the energy dissipation pool 4 can store the intercepted solids step by step, which is convenient for cleaning with a long-arm backhoe during the non-flood season. In addition, the utility model adopts a step 1 gabion stone cage structure instead of the traditional concrete structure for anti-scour protection, and adopts gabion stone cages that adapt to the bank slope to protect the bank from collapse, which can effectively reduce the project cost.

[0044] It should be noted that the above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

[0045] In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] In the description of this document, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only used to illustrate the relative position relationship between the various components or components, and do not particularly limit the specific installation orientation of the various components or components.

[0047] In the descriptions of this document, some terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0048] In this document, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0049] The structures, proportions, sizes, etc. drawn in the drawings in this application are only used to match the contents disclosed in this technical solution for those skilled in the art to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0050] The terms used in this document are those commonly used in the art currently in consideration of the functions of the present disclosure, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present disclosure. Therefore, the terms used in the document should not be understood as simple names, but rather as a general description based on the meaning of the terms and the present disclosure.

[0051] Flowcharts or text are used in this document to illustrate the operational steps performed according to the embodiments of the present application. It should be understood that the operational steps in the embodiments of the present application are not necessarily performed in the exact order in which they are described. Instead, the various steps may be processed in reverse order or simultaneously, as needed. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0052] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A mountain torrent gully energy dissipation and anti-scour management structure, characterized in that: It includes steps arranged at the bottom of the mountain torrent ditch and along the water flow direction of the mountain torrent ditch; a plurality of energy dissipation sills are arranged in sequence at intervals in the ditch body along the water flow direction of the mountain torrent ditch; a drainage channel is provided between one side of the energy dissipation sill and one side of the ditch body of the mountain torrent ditch.

2. A mountain torrent gully energy dissipation and anti-scour management structure according to claim 1, characterized in that: The water-facing side and the water-receiving side of the stilling sill are inclined surfaces inclined to each other.

3. A mountain torrent gully energy dissipation and anti-scour management structure according to claim 1, characterized in that: An energy dissipation pool is formed between the water-facing side of the dissipation sill and both sides of the ditch body of the mountain torrent ditch and adjacent steps.

4. A mountain torrent gully energy dissipation and anti-scour management structure according to claim 2, characterized in that: The top of the energy dissipation sill is a plane.

5. The mountain torrent gully energy dissipation and anti-scour management structure according to claim 1 is characterized in that: A buffer pad is provided on the water-facing side of the stilling sill.

6. A mountain torrent gully energy dissipation and anti-scour management structure according to claim 1, characterized in that: The upper part of the stilling sill is provided with drainage holes which penetrate through the water-facing side and the water-receiving side thereof.

7. A mountain torrent gully energy dissipation and anti-scour management structure according to claim 6, characterized in that: The drainage holes are arranged to be inclined downward from the water-facing side to the water-retaining side of the stilling sill.

8. The mountain torrent gully energy dissipation and anti-scour management structure according to claim 1, characterized in that: The steps are of gabion stone cage structure.

9. The mountain torrent gully energy dissipation and anti-scour management structure according to claim 1, characterized in that: A stilling sill foundation is provided at the bottom of the stilling sill, and the stilling sill foundation is embedded in the bottom and side wall of the mountain torrent ditch. The side of the stilling sill away from the drainage channel is embedded in the side wall of the mountain torrent ditch.

10. A mountain torrent gully energy dissipation and scour prevention management structure according to any one of claims 1 to 9, characterized in that: The drainage channels of two adjacent stilling sills are arranged alternately.

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