CN215052616U

CN215052616U - Storage capacity system for sedimentation storage capacity regeneration of medium and small-sized reservoirs

Info

Publication number: CN215052616U
Application number: CN202120451505.5U
Authority: CN
Inventors: 谢遵党; 宋修昌; 毛重阳
Original assignee: Yellow River Engineering Consulting Co Ltd
Current assignee: Yellow River Engineering Consulting Co Ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-12-07
Anticipated expiration: 2031-03-02

Abstract

The utility model provides a reservoir capacity system for sediment reservoir capacity regeneration of medium and small size reservoirs, which comprises a main reservoir dam, a secondary dam arranged at the tail of the medium and small size reservoir, and a sand flushing groove arranged in a reservoir area and positioned between the main reservoir dam and the secondary dam; the utility model has reasonable design of the whole structure, and realizes a siltation storage capacity regeneration structure system by establishing the secondary dam and establishing the sand flushing groove between the secondary dam and the main dam; when the inflow volume of the main river channel is small and cannot reach the flow and flow rate required by silt flushing, the sluice gate under the drainage dam is used for retaining water and storing water, and after enough water volume is stored, the sluice gate is opened and water is discharged to flush the silt; when the reservoir is at a low water level, the sand washing principle of the desilting pool is applied to design flow beam water for washing sand, and the sand in the subareas in the reservoir is discharged out of the main dam through the sand washing groove.

Description

Storage capacity system for sedimentation storage capacity regeneration of medium and small-sized reservoirs

Technical Field

The utility model relates to a reservoir siltation storage capacity regeneration technical field, concretely relates to carry out siltation storage capacity regeneration's storage capacity system to middle-size and small-size reservoir.

Background

The reservoir is used as an important comprehensive hydro-junction, and the exertion of all functions of the reservoir provides important guarantee for solving the problems of frequent drought and waterlogging and the like in China, efficiently utilizing water resources, promoting economic development and maintaining social stability.

At present, China has a large number of small and medium-sized reservoirs; the phenomenon of large amount of silt deposition caused in the process of many years of application enables the storage capacity of the reservoir to be reduced year by year, and further the normal operation of the reservoir is seriously influenced.

It is therefore often necessary to desilt the reservoir. At present, the reservoir dredging method which is relatively extensive has natural flushing and mechanical dredging in flood season.

The influence of the self structure of the reservoir is received, the sand discharge of the reservoir by utilizing the natural flushing in the flood season can cause a large amount of waste of the incoming water in the flood season due to the sand discharge operation, and the sand flushing range is too limited; mechanical dredging is complex in operation and high in cost, and is difficult to widely use.

Therefore, a reservoir capacity structure with a storage capacity regeneration performance is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a storage capacity system for the sedimentation storage capacity regeneration of medium and small sized reservoirs aiming at the defects of the prior art; the utility model discloses the system is through establishing two dams to establish the sand washing groove between two dams and main dam, when reservoir low water level, the application desilting pond sand washing principle is washed sand with design flow beam water, and the sectional silt is through outside the sand washing groove discharge main dam in with the storehouse.

The technical scheme of the utility model is that: a storage capacity system for carrying out sedimentation storage capacity regeneration aiming at a medium-small reservoir comprises a main reservoir dam, a secondary dam arranged at the tail of the medium-small reservoir and a sand flushing groove arranged in a reservoir area and positioned between the main reservoir dam and the secondary dam; the secondary dam comprises a non-overflow dam arranged at the tail of a medium and small reservoir and used for blocking up the water level and a drainage dam used for draining the excess water of the reservoir;

the sand flushing groove comprises a sand flushing main groove arranged on the runoff of the reservoir area of the small and medium-sized reservoir and a plurality of sand flushing side grooves which are arranged on the runoff of the reservoir area of the small and medium-sized reservoir and are positioned on two sides of the sand flushing main groove.

Furthermore, a first sand discharge gate is arranged at the tail of the medium and small reservoir; the first sand discharge gate is positioned at any one end of the two sides of the main dam of the reservoir; the sand washing groove is connected with the first sand discharge gate, and a first sand washing funnel is arranged at the connection part; at present, a sand discharge gate is not built on a plurality of dam bodies in the existing small and medium-sized reservoirs during construction, so that the sand discharge gate needs to be further built to meet the requirement of sand flushing.

Further, the main reservoir dam comprises a main reservoir dam body and a second sand discharge gate arranged on the main reservoir dam body; the sand washing groove is connected with the second sand discharge gate, and a second sand washing funnel is arranged at the connection part; the existing sand discharge gate on the original main dam of the reservoir is utilized to construct a reservoir capacity regeneration system, and the sand discharge gate does not need to be further constructed, so that the construction cost can be greatly saved.

Further, the non-overflow dam adopts any one of a gravity dam, an earth-rock dam or a rock-fill dam; determining to adopt a gravity dam, an earth-rock dam or a rock-fill dam according to the actual condition of the reservoir; and the construction of the drainage dam is comprehensively determined according to factors such as reservoir size, non-overflow dam, field actual conditions and the like.

Furthermore, the sluicing dam comprises a sluicing dam body, a drainage bottom hole formed in the sluicing dam body, and an arc gate arranged inside the drainage bottom hole.

Furthermore, the width ratio of the sand flushing main groove to the sand flushing side groove is 2.5-4: 1; the sand-washing main groove is used as a sand-washing main load, and the sand-washing side groove is used for carrying out auxiliary sand washing; on the one hand, the sand washing range can be effectively enlarged, on the other hand, the actual sand washing capacity can be enhanced, and the sand washing effect is further improved.

Furthermore, 4-20 sand flushing side grooves are formed, and 4-20 sand flushing side grooves are uniformly distributed on two sides of the sand flushing main groove; and determining the number of the actual sand flushing side grooves according to factors such as the size of the reservoir, the actual field situation and the like.

Compared with the prior art, the utility model discloses beneficial effect:

1. the utility model has reasonable design of the whole structure, and realizes a siltation storage capacity regeneration structure system by establishing the secondary dam and establishing the sand flushing groove between the secondary dam and the main dam; when the inflow volume of the main river channel is small and cannot reach the flow and flow rate required by silt flushing, the sluice gate under the drainage dam is used for retaining water and storing water, and after enough water volume is stored, the sluice gate is opened and water is discharged to flush the silt; when the reservoir is at a low water level, the sand washing principle of the desilting basin is applied to design flow beam water for washing sand, and the sand in the subareas in the reservoir is discharged out of the main dam through the sand washing groove;

2. the utility model discloses once only drop into, holistic maintenance cost is lower in follow-up desilting removes sand, is fit for promoting in a large number.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 3 is a cross-sectional view of the water dam of the present invention;

the system comprises a reservoir main dam 1, a reservoir secondary dam 2, a non-overflow dam 21, a drainage dam 22, a drainage dam body 221, a drainage bottom hole 222, an arc gate 223, a sand flushing tank 3, a sand flushing main tank 31 and a sand flushing side tank 32.

Detailed Description

Example 1: as shown in fig. 1, the reservoir capacity system for carrying out sedimentation and reservoir capacity regeneration on medium and small-sized reservoirs comprises a main reservoir dam 1, a secondary dam 2 arranged at the tail of the medium and small-sized reservoir, and a sand flushing tank 3 arranged in a reservoir area and positioned between the main reservoir dam 1 and the secondary dam 2; the secondary dam 2 comprises a non-overflow dam 21 arranged at the tail of a medium-small reservoir for blocking up the water level and a drainage dam 22 for draining the excess water of the reservoir; the non-overflow dam 21 adopts a gravity dam; as shown in fig. 3, the drainage dam 22 includes a drainage dam body 221, a drainage bottom hole 222 provided on the drainage dam body 221, and an arc-shaped gate 223 provided inside the drainage bottom hole 222;

the sand flushing groove 3 comprises a sand flushing main groove 31 arranged on the runoff of the reservoir area of the medium-small reservoir and a plurality of sand flushing side grooves 32 arranged on the runoff of the reservoir area of the medium-small reservoir and positioned at two sides of the sand flushing main groove 31; the width ratio of the sand flushing main groove 31 to the sand flushing side groove 32 is 2.5: 1; the number of the sand flushing side grooves 32 is 6, and the 6 sand flushing side grooves 32 are uniformly distributed on two sides of the sand flushing main groove 31.

Wherein, a first sand discharge gate is arranged at the tail of the medium and small reservoir; the first sand discharge gate is positioned at the right end of the reservoir main dam 1; the sand flushing groove 3 is connected with the first sand discharge gate, and a first sand flushing funnel is arranged at the joint.

Example 2: the difference from example 1 is: as shown in fig. 2, the main reservoir dam 1 includes a main reservoir dam body and a second sand discharge gate arranged on the main reservoir dam body; the sand flushing groove 3 is connected with the second sand discharge gate, and a second sand flushing funnel is arranged at the joint.

Claims

1. A storage capacity system for carrying out sedimentation storage capacity regeneration on small and medium-sized reservoirs comprises a main reservoir dam (1), a secondary dam (2) arranged at the tail of the small and medium-sized reservoir, and a sand flushing groove (3) arranged in a reservoir area and positioned between the main reservoir dam (1) and the secondary dam (2); the secondary dam (2) is characterized by comprising a non-overflow dam (21) arranged at the tail of a medium-small reservoir for blocking up the water level and a drainage dam (22) for draining the excess water of the reservoir;

the sand washing groove (3) comprises a sand washing main groove (31) arranged on the runoff of the reservoir area of the small and medium-sized reservoir and a plurality of sand washing side grooves (32) which are arranged on the runoff of the reservoir area of the small and medium-sized reservoir and are positioned at two sides of the sand washing main groove (31).

2. The reservoir capacity system for the sediment reservoir capacity regeneration of the small and medium-sized reservoir according to claim 1, wherein a first sand discharge gate is arranged at the tail of the medium and medium-sized reservoir; the first sand discharge gate is positioned at any one end of two sides of the main dam (1) of the reservoir; the sand flushing groove (3) is connected with the first sand discharge gate, and a first sand flushing funnel is arranged at the joint.

3. The reservoir capacity system for the sediment reservoir capacity regeneration of the medium and small size reservoir as claimed in claim 1, characterized in that the reservoir main dam (1) comprises a reservoir main dam body and a second sand discharge gate arranged on the reservoir main dam body; the sand flushing groove (3) is connected with the second sand discharge gate, and a second sand flushing funnel is arranged at the joint.

4. The reservoir capacity system for the sediment reservoir capacity regeneration of the medium and small reservoir as claimed in claim 1, wherein the non-overflow dam (21) is any one of a gravity dam, an earth-rock dam or a rock-fill dam.

5. The reservoir capacity system for the sediment reservoir capacity regeneration of the small and medium-sized reservoirs according to claim 1, wherein the drainage dam (22) comprises a drainage dam body (221), a drainage bottom hole (222) arranged on the drainage dam body (221), and an arc-shaped gate (223) arranged inside the drainage bottom hole (222).

6. The reservoir capacity system for sediment reservoir capacity regeneration of small and medium size reservoirs according to claim 1, wherein the width ratio of the sand flushing main tank (31) to the sand flushing side tank (32) is 2.5-4: 1.

7. The reservoir capacity system for sediment reservoir capacity regeneration of small and medium size reservoirs according to claim 1, wherein the number of sand flushing side grooves (32) is 4-20, and the 4-20 sand flushing side grooves (32) are uniformly distributed on two sides of the sand flushing main groove (31).