Stilling basin system for preventing outer slope toe of inland river bank from being scoured

Abstract

The utility model relates to the technical field of water conservancy projects, and discloses a stilling pool system for preventing an outer slope toe of an inland river bank from being scoured, which comprises the bank, a drainage pipe is fixedly mounted in the bank, C30 concrete retaining walls positioned on two sides of the drainage pipe are fixedly mounted on the left side of the bank, and the C30 concrete retaining walls are fixedly mounted on the right side of the bank. C30 plain concrete is arranged at the bottom of the C30 concrete retaining wall. Through the arrangement of the reservoir, the horizontal stilling pool and the thick riprap apron, efficient sterilization of water flow energy is achieved, meanwhile, the construction cost is controlled, the design of the reservoir effectively reduces the water flow energy, tail sills are specially arranged on the two sides of the horizontal stilling pool, the sterilization effect on the water body energy is further enhanced, and the energy-saving effect is achieved. In addition, the thick riprap apron is additionally arranged, so that the protection range of the whole stilling system is expanded, the energy dissipation and scour prevention requirements of the long-term unrepaired river embankment are met, and the embankment instability problem caused by long-term scour during drainage is fundamentally prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, and more specifically to a stilling pool system for preventing the outer slope foot of an inner river bank from being washed away. Background Art

[0002] An energy dissipation pool is an energy dissipation facility, usually installed downstream of a discharge structure to induce a bottom flow water jump in a rapid stream. In water conservancy projects, some dams and ship locks have large outlet energy, so an energy dissipation pool is installed at their outlet to eliminate the impact energy of the water on the dam body. The energy dissipation pool is mainly used to utilize the water jump generated in the pool after the discharge, which is then converted into a slow flow and discharged through the energy dissipation pool to meet the requirements of energy dissipation and anti-scouring. Although conventional energy dissipation pool designs are widely used in large-scale water conservancy and hydropower construction projects, conventional energy dissipation pools are difficult to apply in river construction projects that require strict water and soil conservation. After the conventional energy dissipation pool is installed, the water flow may still scour the pit in the river channel, causing soil erosion, which may cause the embankment to be directly scoured by the discharge for a long time, and the silt outside the embankment foot frequently flows, which in turn causes the embankment to become unstable. Therefore, it is necessary to improve the conventional energy dissipation pool to meet the needs of such projects. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an energy dissipation pool system for preventing the outer slope foot of an inner river bank from being scoured, which has the advantage of preventing the bank from becoming unstable due to the scouring of the foundation by water.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy dissipation pool system for preventing the outer slope foot of an inner river embankment from being eroded, comprising an embankment, a drainage pipe is fixedly installed inside the embankment, a C30 concrete retaining wall located on both sides of the drainage pipe is fixedly installed on the left side of the embankment, the bottom of the C30 concrete retaining wall is provided with C30 plain concrete, an inclined bottom plate type energy dissipation pool located between two C30 concrete retaining walls is provided on the left side of the embankment, a C15 plain concrete cushion layer is provided at the bottom of the inclined bottom plate type energy dissipation pool, the left end of the inclined bottom plate type energy dissipation pool is fixedly connected to a water storage tank, the left end of the water storage tank is fixedly connected to a horizontal energy dissipation pool, and the left end of the horizontal energy dissipation pool is provided with a thick riprap guard.

[0005] As a preferred technical solution of the present utility model, the thickness of the C30 plain concrete is 0.5 meters, and the thickness of the C15 plain concrete cushion layer is 0.1 meters.

[0006] As a preferred technical solution of the utility model, a tail sill is provided at the left end of the horizontal energy dissipation pool and adopts a plain concrete structure.

[0007] As a preferred technical solution of the utility model, the length of the thick riprap apron is 5 meters, and the thickness of the thick riprap apron is 0.6 meters.

[0008] As a preferred technical solution of the utility model, the width of the horizontal energy dissipation pool is the same as the width of the thick riprap apron, and pine pile foundations are evenly arranged at the bottom of the horizontal energy dissipation pool.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0010] The utility model realizes efficient disinfecting of water flow energy and controls the project cost by arranging inclined bottom plate type energy dissipation pool, water storage pool, horizontal energy dissipation pool and thick riprap protection tank. Specifically, the combination of inclined bottom plate type energy dissipation pool and water storage pool not only reduces the foundation filling volume, but also optimizes the cost control. The design of the water storage pool effectively reduces the water flow energy. The tail sills specially arranged on both sides of the horizontal energy dissipation pool further enhance the disinfecting effect of water body energy. This ingenious layout enables the water flow to fully diffuse and slow down in the energy dissipation pool, effectively reducing the scouring of the downstream riverbed by the water flow. In addition, the protection range of the whole energy dissipation system is expanded by adding the thick riprap protection tank. The thick riprap protection tank effectively disperses the impact force of the water flow, stabilizes the riverbed and ensures the safety of the riverbank. This not only meets the energy dissipation and anti-scouring requirements of the long-term disrepair riverbank, but also fundamentally prevents the problem of embankment instability caused by long-term scouring of water discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the longitudinal section structure of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the horizontal stilling pool of the utility model;

[0013] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0014] In the figure: 1. Embankment; 2. Drainage pipe; 3. C30 concrete retaining wall; 4. C30 plain concrete; 5. Sloping bottom plate type energy dissipation pool; 6. C15 plain concrete cushion layer; 7. Reservoir; 8. Horizontal energy dissipation pool; 9. Thick riprap protection tank. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] like Figures 1 to 3As shown, the utility model provides an energy dissipation pool system for preventing the outer slope foot of the inner river embankment from being scoured, comprising an embankment 1, a drainage pipe 2 is fixedly installed inside the embankment 1, C30 concrete retaining walls 3 are fixedly installed on the left side of the embankment 1 and are located on both sides of the drainage pipe 2, and C30 plain concrete 4 is provided at the bottom of the C30 concrete retaining wall 3, and an inclined bottom plate type energy dissipation pool 5 is provided on the left side of the embankment 1 between the two C30 concrete retaining walls 3, and a C15 plain concrete cushion layer 6 is provided at the bottom of the inclined bottom plate type energy dissipation pool 5, a water storage tank 7 is fixedly connected to the left end of the water storage tank 7, a horizontal energy dissipation pool 8 is fixedly connected to the left end of the water storage tank 7, and a thick riprap tank 9 is provided at the left end of the horizontal energy dissipation pool 8.

[0017] Through the design of the water reservoir 7, the water flow can be dissipated, and the tail sill is set at the left end of the horizontal energy dissipation pool 8 to further dissipate the water energy. In addition, the thick riprap guard 9 is added to form a complete energy dissipation system to extend the protection range.

[0018] The thickness of the C30 plain concrete 4 is 0.5 meters, and the thickness of the C15 plain concrete cushion layer 6 is 0.1 meters.

[0019] Through the design of C30 plain concrete 4 and C15 plain concrete cushion layer 6, the anti-scouring ability of the bottom of the energy dissipation pool can be increased, the riverbed can be protected from being eroded by water flow, and at the same time, water flow can be prevented from penetrating into the foundation through the bottom of the energy dissipation pool, thereby ensuring the normal operation of the energy dissipation pool.

[0020] The left end of the horizontal stilling pool 8 is provided with a tail sill, and adopts a plain concrete structure.

[0021] Through the design of the tail sill, the water energy can be further eliminated, allowing the water flow to fully diffuse and slow down in the energy dissipation pool.

[0022] Among them, the length of the thick riprap guard 9 is 5 meters, and the thickness of the thick riprap guard 9 is 0.6 meters.

[0023] The design of the thick riprap apron 9 can effectively disperse the energy of the water flow, slow down the speed of the water flow, and prevent the water flow from eroding the riverbed.

[0024] The width of the horizontal energy dissipation pool 8 is the same as the width of the thick riprap apron 9, and rods are evenly arranged at the bottom of the horizontal energy dissipation pool 8.

[0025] Through the design of the inserted rods, the stability of the horizontal energy dissipation pool 8 can be improved and the destructive effect of the water flow on the horizontal energy dissipation pool 8 can be reduced.

[0026] The working principle and use process of this utility model:

[0027] When the water flows through the drainage pipe 2, it flows into the interior of the water storage tank 7 through the inclined bottom plate type energy dissipation pool 5. Through the design of the water storage tank 7, the water flow can be dissipated, and then it flows into the horizontal energy dissipation pool 8. The tail sill is arranged at the left end of the horizontal energy dissipation pool 8, which can further eliminate the energy of the water body, so that the water flow can be fully diffused and decelerated in the energy dissipation pool. Then the water flows to the top of the thick riprap apron 9. The thick riprap apron 9 can disperse the energy of the water flow, reduce the impact force of the water flow on the riverbed, and reduce the destructive effect of the water flow on the riverbed. At the same time, it can reduce the silt and other impurities in the water flow from silting up on the riverbed, keep the riverbed clean and unobstructed, so as to meet the energy dissipation and anti-scouring requirements of the river embankment that has been in disrepair for many years, and prevent the embankment from being directly eroded by the discharge of water for a long time, and the silt outside the embankment foot from flowing frequently, thereby causing the problem of instability of the embankment.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stilling pool system for preventing the outer slope foot of an inner river bank from being scoured, comprising a bank (1), characterized in that: A drainage pipe (2) is fixedly installed inside the embankment (1); a C30 concrete retaining wall (3) is fixedly installed on the left side of the embankment (1) and is located on both sides of the drainage pipe (2); and C30 plain concrete (4) is provided at the bottom of the C30 concrete retaining wall (3); A sloping bottom plate type energy dissipation pool (5) located between two C30 concrete retaining walls (3) is provided on the left side of the embankment (1); a C15 plain concrete cushion layer (6) is provided at the bottom of the sloping bottom plate type energy dissipation pool (5); a water reservoir (7) is fixedly connected to the left end of the water reservoir (7); a horizontal energy dissipation pool (8) is fixedly connected to the left end of the horizontal energy dissipation pool (8); and a thick riprap guard (9) is provided at the left end of the horizontal energy dissipation pool (8).

2. The energy dissipation pool system for preventing the outer slope foot of the inner river bank from being scoured according to claim 1, characterized in that: The thickness of the C30 plain concrete (4) is 0.5 meters, and the thickness of the C15 plain concrete cushion layer (6) is 0.1 meters.

3. The energy dissipation pool system for preventing the outer slope foot of the inner river bank from being scoured according to claim 1, characterized in that: The left end of the horizontal stilling pool (8) is provided with a tail sill, and adopts a plain concrete structure.

4. The energy dissipation pool system for preventing the outer slope foot of the inner river bank from being scoured according to claim 1, characterized in that: The length of the thick riprap apron (9) is 5 meters, and the thickness of the thick riprap apron (9) is 0.6 meters.

5. The energy dissipation pool system for preventing the outer slope foot of the inner river bank from being scoured according to claim 1, characterized in that: The width of the horizontal energy dissipation pool (8) is the same as the width of the thick riprap protection tank (9), and pine pile foundations are evenly arranged at the bottom of the horizontal energy dissipation pool (8).

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