CN216041029U - Simple stilling pool structure composed of impact-proof walls - Google Patents

Abstract

The utility model discloses a simple stilling pool structure consisting of stilling walls, which comprises a stilling pool main body, wherein the stilling pool main body comprises a riverbed, two sides of the riverbed are connected with riverway shore bases, the upstream side of the riverbed is provided with a first stilling wall, the downstream side of the riverbed is provided with a second stilling wall, the surface of the riverbed is provided with a first stilling layer, a buffer layer and a second stilling layer, the first stilling layer is discontinuously provided with a plurality of first stilling grooves, the second stilling layer is continuously provided with a plurality of second stilling grooves, the surface of the riverbed is also provided with a plurality of stilling piers, and the tail end of the riverbed is provided with a tail sill. The simple stilling pool structure comprises a first impact-proof wall and a second impact-proof wall which are respectively arranged at proper positions of a downstream riverbed of a hydropower station, so that not only can a building on the upstream of the impact-proof walls be protected from being further damaged by the downstream of the riverbed, but also the simple stilling pool formed by the two impact-proof walls can be matched with a first stilling layer, a buffer layer and a second stilling layer to further remove upstream water energy.

Description

Simple stilling pool structure composed of impact-proof walls

Technical Field

The utility model belongs to the technical field of stilling ponds, and particularly relates to a simple stilling pond structure consisting of impact-proof walls.

Background

The large rivers in the southwest region of China are more, the hydraulic resources are rich, and the landform change of the river basin is large, so that the development of the hydraulic resources is facilitated. In recent years, the hydraulic engineering of China is rapidly developed, more and more high dam hubs are built and put into operation in succession along with the development of domestic hydroelectric resources and the improvement of dam building technology, and the southwest area of China even forms the largest hydraulic hydroelectric hub group in the world scale. However, the river in the area generally develops a deep covering layer, the stratum engineering property is poor, and during the operation of the power station, the covering layer of the downstream riverbed is washed by the drainage of clean water all the year round, and the riverbed is cut down remarkably.

The excessive cutting of the downstream riverbed of the power station not only damages or threatens the downstream coastal buildings and the riverbed bank slope, but also is mainly characterized in that the overall descending of the downstream riverbed can cause the water level at the downstream of the stilling pool to be reduced, so that the energy dissipation effect of the originally designed energy dissipation structure is obviously reduced, the downstream water energy of the stilling pool is too large, the downstream riverbed is washed by larger water energy and is easily started, the riverbed is further reduced after the riverbed is started, even a large pit is formed at the local part, the circulation is repeated, the current situation of deep cutting of the riverbed is caused, the energy dissipation operation condition is not consistent with the originally designed working condition, and serious washing damage can be further caused. In this case, the brushing of the downstream riverbed is also gradually intensified with the prolongation of the operation time, which in turn jeopardizes the safe operation of the upstream relative buildings and even the dams.

SUMMERY OF THE UTILITY MODEL

In view of the problems raised by the above background art, the present invention is directed to: aims to provide a simple stilling pool structure consisting of impact-proof walls.

In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a simple and easy stilling pool structure of constituteing by scour protection wall, includes the stilling pool main part, the stilling pool main part is including the riverbed, the both sides of riverbed are connected with the river course bank, first scour protection wall is installed to the upstream side of riverbed, second scour protection wall is installed to the downstream side of riverbed, the riverbed surface is equipped with first stilling layer, buffer layer and second stilling layer, first stilling layer is intermittent to be equipped with a plurality of first stilling grooves, the buffer layer is the setting of concave structure, the exit of buffer layer is the slope setting, the second stilling layer is continuous to be equipped with a plurality of second stilling grooves, the riverbed surface still is equipped with a plurality of stilling mounds, the tail end of riverbed is equipped with the sill, the sill is connected with second scour protection wall.

Further, the river bed is arranged in a stepped structure, the first stress relief layer is arranged on the upper layer of the river bed, the buffer layer is arranged on the middle layer of the river bed, and the second stress relief layer is arranged on the lower layer of the river bed. The structure design improves the force eliminating effect.

Further, the first impact-proof wall and the second impact-proof wall are made of reinforced concrete. Such structural design makes first impact-resistant wall and second impact-resistant wall more durable.

Further inject, all be equipped with two-layer reinforcing bar, first layer in first scour protection wall and the second scour protection wall reinforcing bar is X-shaped structure and arranges, the second floor reinforcing bar is the cruciform structure and arranges. Such structural design makes first scour protection wall and second scour protection wall more resist shock.

Further limiting, the cross sections of the first force-eliminating grooves and the second force-eliminating grooves are arranged in a semicircular structure. The structure design enables the force eliminating effect on water to be better.

The utility model has the beneficial effects that: the utility model provides a simple stilling pool structure consisting of impact walls, which consists of a first impact wall and a second impact wall, which are respectively arranged at proper positions of a downstream riverbed of a hydropower station, so that not only can buildings upstream of the impact walls be protected from further downcutting damage of the riverbed, but also the simple stilling pool consisting of two impact walls can be matched with a first stilling layer, a buffer layer and a second stilling layer to further remove upstream water energy, and the simple stilling pool structure plays an active role in long-term safe operation of the hydropower station and stability of the river.

Drawings

The utility model is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic structural diagram of a simple stilling pool structure composed of impact walls according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a simplified stilling pool structure composed of impact walls according to an embodiment of the present invention;

the main element symbols are as follows:

stilling pool main part 1, riverbed 2, river course bank 3, first scour protection wall 4, second scour protection wall 5, first power layer 6, buffer layer 7, second power layer 8, first power recess 9, second power recess 10, power mound 11, tail sill 12, reinforcing bar 13 of removing.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1-2, the simple stilling pool structure composed of stilling walls of the present invention includes a stilling bed 2, two sides of the stilling bed 2 are connected with river channel shore 3, a first stilling wall 4 is installed at the upstream side of the stilling bed 2, a second stilling wall 5 is installed at the downstream side of the stilling bed 2, a first stilling layer 6, a buffer layer 7 and a second stilling layer 8 are installed on the surface of the stilling bed 2, the first stilling layer 6 is intermittently provided with a plurality of first stilling grooves 9, the buffer layer 7 is arranged in an inward concave structure, the outlet of the buffer layer 7 is arranged in an inclined manner, the second stilling layer 8 is continuously provided with a plurality of second stilling grooves 10, the surface of the stilling bed 2 is further provided with a plurality of stilling piers 11, the tail end of the stilling bed 2 is provided with a tail sill 12, and the tail sill 12 is connected with the second stilling wall 5.

In the embodiment, the first impact-proof wall 4 is arranged at the tail end of a building at the upstream of a power station, the top elevation of the first impact-proof wall 4 is consistent with the height of the building at the upstream of the power station, the top of the second impact-proof wall 5 can be 2-3 m higher than a riverbed according to hydraulic analysis on the basis of the elevation of the riverbed 2, and the thicknesses of the first impact-proof wall 4 and the second impact-proof wall 5 are determined according to specific geomechanical parameters of a deep covering layer and can generally be 0.8-1.2 m; the heights of the first impact-proof wall 4 and the second impact-proof wall 5 are determined by calculation according to the conditions of the photo album stratum and the scouring depth of the riverbed, and are generally not less than 10m, and in the two impact-proof walls, the first impact-proof wall 4 is used as a starting point of a stilling basin while protecting an upstream building; the second scour protection wall 5 is as the sill tail of stilling basin, and cooperation sill 12 has the function of solid bed sediment trapping concurrently, and riverbed 2 between the twice scour protection wall is stilling basin bottom plate, and the reply is answered around the twice scour protection wall, and the cooperation is gone up first power layer 6, buffer layer 7 and second power layer 8 and has been constituteed a simple but reliable energy dissipater, when effectively protecting power station upper reaches building, further water energy of killing.

Preferably, the riverbed 2 is arranged in a stepped structure, the first stress relief layer 6 is arranged on the upper layer of the riverbed 2, the buffer layer 7 is arranged on the middle layer of the riverbed 2, and the second stress relief layer 8 is arranged on the lower layer of the riverbed 2. The structure design improves the force eliminating effect. In practice, other structural shapes of the riverbed 2 may be considered as the case may be.

Preferably, the first impact-proof wall 4 and the second impact-proof wall 5 are made of reinforced concrete. Such a structural design makes the first impact protection wall 4 and the second impact protection wall 5 more durable. In fact, other structural shapes of the first impact-prevention wall 4 and the second impact-prevention wall 5 can be considered according to specific situations.

All be equipped with two-layer reinforcing bar 13 in preferred first scour protection wall 4 and the second scour protection wall 5, first layer reinforcing bar 13 is X-shaped structural arrangement, and second floor reinforcing bar 13 is the cruciform structural arrangement. Such a structural design makes the first impact protection wall 4 and the second impact protection wall 5 more impact resistant. In fact, other structural shapes of the first impact-prevention wall 4 and the second impact-prevention wall 5 can be considered according to specific situations.

Preferably, the cross sections of the first force-eliminating grooves 9 and the second force-eliminating grooves 10 are arranged in a semicircular structure. The structure design enables the force eliminating effect on water to be better. In fact, other structural shapes of the first force-dissipating groove 9 and the second force-dissipating groove 10 can be considered according to specific situations.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (5)

1. A simple stilling pool structure composed of a scour wall is characterized in that: comprising a stilling pool main body (1), and the stilling pool main body (1) includes a riverbed (2), and the riverbed (2) ) is connected with a river bank platform (3) on both sides, the upstream side of the river bed (2) is installed with a first anti-scour wall (4), and the downstream side of the river bed (2) is installed with a second anti-scour wall ( 5), the surface of the river bed (2) is provided with a first damping layer (6), a buffer layer (7) and a second damping layer (8), and the first damping layer (6) is intermittently provided. There are several first force-relief grooves (9), the buffer layer (7) is arranged in a concave structure, the outlet of the buffer layer (7) is arranged obliquely, and the second force-relief layer (8) A plurality of second force-reducing grooves (10) are continuously arranged, a plurality of force-reducing piers (11) are also arranged on the surface of the river bed (2), and a tail sill (12) is arranged at the rear end of the river bed (2), The tail sill (12) is connected with the second impact wall (5). 2. A simple stilling pool structure composed of anti-scour walls according to claim 1, characterized in that: the river bed (2) is arranged in a stepped structure, and the first stilling layer (6) is arranged On the upper layer of the river bed (2), the buffer layer (7) is arranged in the middle layer of the river bed (2), and the second damping layer (8) is arranged in the lower layer of the river bed (2). 3. A simple stilling pool structure composed of a washout wall according to claim 2, characterized in that: the first washout wall (4) and the second washout wall (5) are made of reinforced concrete made. 4. A simple stilling pool structure composed of a washout wall according to claim 3, characterized in that: the first washout wall (4) and the second washout wall (5) are both provided with There are two layers of reinforcing bars (13), the reinforcing bars (13) of the first layer are arranged in an X-shaped structure, and the reinforcing bars (13) of the second layer are arranged in a cross-shaped structure. 5. A simple stilling pool structure composed of a washout wall according to claim 4, characterized in that: the transverse direction between the first and second stilling grooves (9) and the second stilling grooves (10) The cross section is arranged in a semicircular structure.

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