Multi-stage energy dissipation channel structure suitable for abrupt slope terrain

Abstract

The utility model belongs to the technical field of engineering, and particularly provides a multi-stage energy dissipation channel structure suitable for abrupt slope terrains, which comprises a multi-stage energy dissipation unit, an outlet apron and a reinforced gabion which are sequentially connected from top to bottom. Each stage of energy dissipation unit comprises an abrupt slope and a stilling pool, and the lower end of the abrupt slope is connected with the stilling pool. However, energy formed by overhigh height difference is concentrated at the tail end for energy dissipation treatment, and the problems of large investment, large occupied area and poor safety often exist. According to the utility model, the difficulty that energy generated by height difference is concentrated at the tail end to be eliminated is avoided, the energy dissipation effect is greatly improved, the safety is better guaranteed, the building scale is reduced, and the investment is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of engineering technology, and specifically relates to a multi-level energy dissipation channel structure suitable for steep slope terrain. Background Art

[0002] In flood drainage, irrigation and water supply projects, it is inevitable to encounter steep slopes with large height differences. This kind of terrain often leads to the accumulation of large amounts of energy at the end of the steep slope, increasing the difficulty and cost of energy dissipation treatment, and even worse, causing certain harm to the project. In the past, the treatment method would explore other paths near the project and re-find solutions with small height differences and long lines to avoid the line passing through steep slopes with large height differences. However, this often conflicts with land acquisition or other constraints, resulting in the project being restricted and difficult to advance. In the past, the commonly used engineering measures were to build large-scale energy dissipation facilities at the end of the steep slope, but the energy formed by the excessive height difference is concentrated at the end for energy dissipation treatment, which often results in large investments, large land occupation, and poor safety. Therefore, there is an urgent need for a new channel structure suitable for steep slopes.

[0003] The Chinese patent document with publication number CN202221979109.0 discloses an energy dissipation and anti-impact structure, which relates to the technical field of water conservancy engineering. The utility model includes a water conservancy engineering channel, ambush, energy dissipation plate and diverter plate. Ambush is arranged on both sides of the water conservancy engineering channel, and energy dissipation grooves are opened in the side walls of the ambush. Energy dissipation plates are arranged on the rear end side walls of the energy dissipation grooves, and diverter plates are installed at the center of the water conservancy engineering channel. The document adds energy dissipation plates on the side walls of the ambush, and the energy dissipation plates can block the channel water so that it can better enter the energy dissipation grooves on the side walls of the ambush, and the diverter plate can divert the channel water in the channel so that the bottom of the channel directly forms two streams, and the upper water flow impacts each other under the action of the ambush, energy dissipation plates and energy dissipation grooves to weaken the impact energy. This document solves the problem that the existing energy dissipation and anti-scouring structures used in water conservancy projects mainly use the seafloor on both sides of the water conservancy project channel. In order to increase the mitigation and weakening effect of the seafloor, the only way is to increase the vertical height of the seafloor. The increase in the vertical height of the seafloor increases the width of the water conservancy project channel, which not only increases the difficulty of construction, but also causes the channel to occupy a larger area, which is not conducive to implementation. It does not solve the disadvantage that the water flow in flood discharge, irrigation and water supply projects is difficult to dissipate energy when encountering steep slopes with large height differences. Utility Model Content

[0004] The utility model provides a multi-level energy dissipation channel structure suitable for steep slope terrain. The purpose is to overcome the problem that in the prior art flood drainage, irrigation and water supply projects, water flows encounter steep slope sections with large height differences. It is necessary to build large-scale energy dissipation facilities at the end of the steep slope. However, the energy formed by the excessive height difference is concentrated at the end for energy dissipation treatment, which often results in large investment, large land occupation and poor safety.

[0005] To this end, the utility model provides a multi-level energy dissipation channel structure suitable for steep slope terrain, including multi-level energy dissipation units, outlet ambush and reinforced gabions, which are connected in sequence from top to bottom; each level of energy dissipation unit includes a steep slope and an energy dissipation pool, and the lower end of the steep slope is connected to the energy dissipation pool.

[0006] Preferably, the number of the multi-stage energy dissipation units is 2-4.

[0007] Preferably, the steep slope has a gradient of 1:0.5-1:3.

[0008] Preferably, the steep slope is a rectangular channel with an aspect ratio of 1.0-1.5.

[0009] Preferably, the width of the stilling pool is the same as the width of the upstream steep slope.

[0010] Preferably, the length of the energy dissipation pool is 15-40m.

[0011] Preferably, the depth of the energy dissipation pool is 1-5m.

[0012] Preferably, the width of the outlet seafloor is the same as the width of the upstream stilling basin.

[0013] Preferably, the length of the outlet seawater is 10-20m.

[0014] Preferably, the outlet sea is made of reinforced gabions.

[0015] Beneficial effects of the utility model:

[0016] 1. The multi-stage energy dissipation channel structure suitable for steep slope terrain provided by the utility model improves the channel layout structure, and dissipates energy through multi-stage energy dissipation units in combination with the terrain height difference, so that when the energy accumulates to a certain critical value, a first-stage energy dissipation unit is set, and the process is repeated in sequence through multi-stage energy dissipation until the height difference and energy dissipation are completed; in this way, the difficulty of concentrating the energy generated by the height difference at the end for elimination is avoided, the energy dissipation effect is greatly improved, the safety is more guaranteed, the scale of the building is reduced, and the investment will also be greatly reduced; therefore, the use of this multi-stage energy dissipation channel structure suitable for steep slope terrain is of great significance.

[0017] 2. The multi-stage energy dissipation channel structure provided by the utility model, which is suitable for steep slope terrain, sets the number of multi-stage energy dissipation units to 2-4 levels. The use of multi-stage energy dissipation within this range is economical and practical.

[0018] 3. The multi-level energy dissipation channel structure provided by the utility model is suitable for steep slopes. The steep slope has a slope of 1:0.5-1:3, which avoids the problem of excessive concentration of energy due to a large slope ratio and the problem of too gentle a slope ratio often requiring more land and difficult coordination in the project.

[0019] 4. The multi-level energy dissipation channel structure provided by the utility model is suitable for steep slope terrain. The outlet sea is covered with reinforced gabions, which have a strong energy dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Figure 1 It is the structural front view of a multi-level energy dissipation channel structure suitable for steep slope terrain;

[0022] Figure 2 It is a top view of the structure of a multi-level energy dissipation channel structure suitable for steep slope terrain;

[0023] Figure 3 It is a cross-section of a steep slope.

[0024] Explanation of reference numerals: 1. Steep slope; 2. Energy dissipation pool; 3. Exit sea floodplain; 4. Steel bar gabion;

[0025] 1.1, Reinforced concrete rectangular channel; 1.2, Plain concrete cushion; 1.3, Crushed stone cushion;

[0026] 11. Level 1 steep slope; 21. Level 1 energy dissipation pool; 12. Level 2 steep slope; 22. Level 2 energy dissipation pool; 13. Level 3 steep slope; 23. Level 3 energy dissipation pool. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] Embodiment 1:

[0029] like Figure 1 and Figure 2 As shown, a multi-level energy dissipation channel structure suitable for steep slope terrain includes a multi-level energy dissipation unit, an outlet ambush 3 and a reinforced gabion 4, and the multi-level energy dissipation unit, the outlet ambush 3 and the reinforced gabion 4 are connected in sequence from top to bottom; each level of energy dissipation unit includes a steep slope 1 and an energy dissipation pool 2, and the lower end of the steep slope 1 is connected to the energy dissipation pool 2.

[0030] The multi-stage energy dissipation channel structure suitable for steep slope terrain provided by the utility model improves the channel layout structure, and dissipates energy through multi-stage energy dissipation units in combination with the terrain height difference, so that when the energy accumulates to a certain critical value, a first-stage energy dissipation unit is set, and the process is repeated in sequence through multi-stage energy dissipation until the height difference and energy are completely dissipated; in this way, the difficulty of concentrating the energy generated by the height difference at the end for elimination is avoided, the energy dissipation effect is greatly improved, the safety is more guaranteed, the scale of the building is reduced, the construction of large-scale energy dissipation settings is avoided, and investment is saved; therefore, the use of the multi-stage energy dissipation channel structure suitable for steep slope terrain is of great significance.

[0031] Embodiment 2:

[0032] Based on Example 1, the number of the multi-stage energy dissipation units is 2-4.

[0033] Specifically, the level of energy dissipation can be determined according to the actual local conditions during the application process, which is generally 2-4 levels. It is more economical to use multi-level energy dissipation within this range. For easy understanding in conjunction with the attached drawings, the multi-level efficiency units are specifically: first-level efficiency unit, second-level efficiency unit, third-level efficiency unit, etc., and so on; the first-level efficiency unit is a first-level steep slope 11, a first-level energy dissipation pool 21, a second-level steep slope 12, a second-level energy dissipation pool 22, a third-level steep slope 13, a third-level energy dissipation pool 23, and so on, and so on.

[0034] Preferably, the steep slope 1 has a slope of 1:0.5-1:3.

[0035] Specifically, the slope of steep slope 1 is 1:0.5-1:3, which avoids the problem of excessive energy concentration due to a too large slope ratio and the problem of too gentle a slope ratio often requiring more land and difficult coordination in the project.

[0036] Preferably, Figure 3 As shown, the steep slope 1 is a rectangular channel with an aspect ratio of 1.0-1.5.

[0037] Specifically, it is preferred to use a rectangular channel with a steep slope 1 and a width-to-height ratio of 1.0-1.5. The construction conditions of the rectangular channel are relatively mature and the construction quality is easy to ensure.

[0038] Preferably, the steep slopes 1 in the multi-stage energy dissipation units have the same or different slopes; specifically, the steep slopes in each stage of the energy dissipation units are set according to actual conditions to minimize the floor space while achieving energy dissipation.

[0039] Preferably, the width of the energy dissipation pool 2 is the same as the width of the upstream steep slope 1. This arrangement is easy to construct and has a strong energy dissipation effect.

[0040] Preferably, the length of the energy dissipation pool 2 is 15-40m. This arrangement is easy to construct and has a strong energy dissipation effect.

[0041] Preferably, the depth of the energy dissipation pool 2 is 1-5 m. This arrangement is easy to construct and has a strong energy dissipation effect.

[0042] Preferably, the width of the outlet seafloor 3 is the same as the width of the upstream stilling pool 2. This arrangement is easy to construct and has a strong energy dissipation effect.

[0043] Preferably, the length of the outlet sea cover 3 is 10-20 m. This arrangement is easy to construct and has a strong energy dissipation effect.

[0044] Preferably, the outlet seawall 3 is made of reinforced gabions, which have a strong energy dissipation effect.

[0045] Preferably, the steep slope 1 and the energy dissipation pool 2 are both made of impact-resistant and wear-resistant concrete; the concrete is economical, easy to construct, and has good impact resistance and wear resistance.

[0046] Preferably, the steep slope 1 is composed of a reinforced concrete rectangular channel 1.1, a plain concrete cushion layer 1.2 and a crushed stone cushion layer 1.3 from top to bottom. The steep slope of this structure is easy to construct and has good construction quality.

[0047] The working principle of the utility model is:

[0048] In combination with the terrain height difference, energy dissipation is carried out step by step from top to bottom through multi-level energy dissipation units. Specifically, when the energy is accumulated to a certain critical value, a first-level energy dissipation unit is set, and the water flows through the steep slope in the efficiency unit of this level into the stilling pool in the efficiency unit of this level to complete the first-level efficiency; repeat the above steps and complete multi-level energy dissipation by setting multi-level energy dissipation units until the height difference and energy dissipation are completed.

[0049] In the description of the present invention, it is necessary to understand that if there are terms such as "upper" and "lower" indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention.

[0050] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are identical or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A multi-level energy dissipation channel structure suitable for steep slope terrain, characterized by: The invention comprises a multi-level energy dissipation unit, an outlet sea apron (3) and a reinforced gabion (4), wherein the multi-level energy dissipation unit, the outlet sea apron (3) and the reinforced gabion (4) are connected in sequence from top to bottom; each level of the energy dissipation unit comprises a steep slope (1) and an energy dissipation pool (2), and the lower end of the steep slope (1) is connected to the energy dissipation pool (2).

2. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The number of the multi-stage energy dissipation units is 2-4.

3. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The steep slope (1) has a slope of 1:0.5-1:

3.

4. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The steep slope (1) is a rectangular channel with an aspect ratio of 1.0-1.

5.

5. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The width of the stilling pool (2) is the same as the width of the upstream steep slope (1).

6. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The length of the energy dissipation pool (2) is 15-40m.

7. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The depth of the energy dissipation pool (2) is 1-5 m.

8. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The width of the outlet apron (3) is the same as the width of the upstream stilling basin (2).

9. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The length of the outlet apron (3) is 10-20m.

10. The multi-level energy dissipation channel structure suitable for steep slope terrain as claimed in claim 1, characterized in that: The outlet seawall (3) is made of reinforced gabions.

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