CN211735240U

CN211735240U - River network flow increasing and quality improving system for plain polder area

Info

Publication number: CN211735240U
Application number: CN202020008716.7U
Authority: CN
Inventors: 张云; 谢先坤; 张婧; 王侃睿
Original assignee: Shanghai Water Engineering Design and Research Institute Co Ltd
Current assignee: Shanghai Water Engineering Design and Research Institute Co Ltd
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-10-23
Anticipated expiration: 2030-01-03

Abstract

The utility model discloses a river network flow-increasing and quality-improving system for plain polder area, include: forming an upstream river channel in the range of the upstream area of the plain polder area; forming a downstream river channel in the range of the downstream area of the plain polder area; the river network is formed in the plain polder area and provided with a water inlet end and a water outlet end, the water inlet end of the river network is communicated with the upstream river channel, and the water outlet end of the river network is communicated with the downstream river channel; the water inlet pump gate is arranged between the water inlet end of the river network and an upstream river channel; a plurality of lifting pump gates which are arranged in the river network at intervals and used for lifting the water level of key nodes of the river network; and a plurality of movable overflow weirs which are arranged in the river network at intervals and used for improving hydrodynamic force. The utility model discloses can analyze the river system pattern, the distribution of optimal control node hydrodynamic force realizes the orderly flow of river network water.

Description

River network flow increasing and quality improving system for plain polder area

Technical Field

The utility model relates to a hydraulic engineering technical field especially relates to a river network flow-increasing and quality-improving system in plain polder area.

Background

The country of the plain polder is low, the water level of the river network is controlled to be low, the water body of the river channel is poor in fluidity and relatively disordered, the orderly flow and self-purification of the water body cannot be realized, meanwhile, the water body of the polder area influenced by tides is poor in exchange performance with the outside, the whole water quality is difficult to regulate and control, and in addition, the inflow of external pollution sources causes the black and odorous river channel to influence the urban environment, so that the urban development is restricted.

In order to solve the problems of complexity, poor river mobility, serious pollution, unbalanced water quality, difficult scheduling and the like of urban water systems of plain river networks, improve the water quality of water bodies in local areas, improve the hydrodynamic force of river channels and improve the water environment quality, the applicant finds a solution to the problems through beneficial exploration and research, and the technical scheme to be introduced below is generated under the background.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve lies in: aiming at the problems of complex river network water system, poor river fluidity, serious pollution, unbalanced water quality, difficult scheduling and the like in the plain polder area, the river network flow increasing and quality improving system for the plain polder area, which can improve the river fluidity and water quality balance degree, reduce the pollution degree of the river and facilitate the water scheduling, is provided.

The utility model discloses the technical problem that will solve can adopt following technical scheme to realize:

a river network flow-increasing and quality-improving system for a plain polder area comprises:

forming an upstream river channel in the range of the upstream area of the plain polder area;

forming a downstream river channel in the range of the downstream area of the plain polder area;

the river network is formed in the plain polder area and provided with a water inlet end and a water outlet end, the water inlet end of the river network is communicated with the upstream river channel, and the water outlet end of the river network is communicated with the downstream river channel;

the water inlet pump gate is arranged between the water inlet end of the river network and an upstream river channel;

a plurality of lifting pump gates which are arranged in the river network at intervals and used for lifting the water level of key nodes of the river network; and

and the movable overflow weirs are arranged in the river network at intervals and used for improving hydrodynamic force.

In a preferred embodiment of the present invention, the river network is formed by a plurality of river channels arranged in a criss-cross manner and communicating with each other.

In a preferred embodiment of the utility model, the heights of the weir tops of the plurality of movable overflow weirs are sequentially reduced according to the river flow direction of the flat country, so that a hydraulic slope is formed.

In a preferred embodiment of the present invention, the movable overflow weir is of an assembled steel structure.

In a preferred embodiment of the present invention, the movable overflow weir is a movable structure located above the river bed elevation, and normally opens the water retaining wall, and sinks to discharge the flood.

In a preferred embodiment of the present invention, the movable overflow weir can be adjusted up and down to form a water level difference between upstream and downstream, the water flow overflows from the weir crest to increase the contact area between the water body and the air, and the ecological floating bed arranged upstream and downstream of the movable overflow weir improves the ecological effect.

Due to the adoption of the technical scheme, the beneficial effects of the utility model reside in that:

1. the utility model can analyze the water system pattern, optimize and control the hydrodynamic force distribution of the nodes, and realize the ordered flow of the river network water body;

2. the movable overflow weir of the utility model can form a water level difference, enhance the hydrodynamic force and realize the controllable and orderly flow of river water flow;

3. the utility model discloses an ecological bed that floats is adopted outward to activity overflow weir, for various aquatic organisms provide living environment, increases river course ecology.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1, a river network flow increasing and upgrading system for a flat country comprises an upstream river channel 100, a downstream river channel 200, a river network 300, a water inlet pump gate 400,

lift pump gates

500a and 500b and

movable overflow weirs

600a, 600b, 600c and 600 d. Of course, the number of the lift pump gates and the number of the movable overflow weirs in this embodiment are not limited to those in this embodiment, and should be determined according to the structure of the river network 300.

The upstream watercourse 100 is formed in the upstream area of the flat polder area 10, and the water quantity of the upstream watercourse needs to be sufficient, the water quality is excellent, and the upstream watercourse is generally a main watercourse of a peripheral water system of the flat polder area 10.

The downstream river channel 200 is formed in the downstream area of the flat polder area 10, and is generally a main drainage channel of a water system at the periphery of the flat polder area 10, and has sufficient drainage capacity.

The river network 300 forms a river network in the flat area, the river network 300 has a water inlet end 301 and a water outlet end 302, the water inlet end 301 of the river network 300 is communicated with the upstream river channel 100, and the water outlet end thereof is communicated with the downstream river channel 200. The river network 300 is formed by a plurality of river channels which are arranged in a criss-cross manner and are communicated with each other. In this embodiment, the river network 300 specifically comprises spaced apart and laterally extending

river channels

310, 320, 330, 340 and spaced apart and longitudinally extending

river channels

350, 360, 370. One end of the river channel 310 is used as a water inlet end 301 of the river network 300, the other end of the river channel 310 is communicated with one end of the river channel 370, and the other end of the river channel 370 is used as a water outlet end 302 of the river network 300; one end of the river channel 340 is connected in parallel to the position of the river channel 370 close to the water outlet end 302 of the river network 300, the other end of the river channel is communicated with one end of the river channel 350, and the other end of the river channel 350 is connected in parallel to the position of the river channel 310 close to the water inlet end 301 of the river network 300; the river channel 360 is positioned between the

river channels

310 and 340, one end of the river channel 360 is connected in parallel with the middle position of the river channel 310, and the other end of the river channel 360 is connected in parallel with the middle position of the river channel 340; the river channel 320 is positioned between the

river channels

360 and 370, one end of the river channel is connected in parallel with the middle position of the river channel 360, and the other end of the river channel is connected in parallel with the middle position of the river channel 370; the river channel 330 is located between the

river channels

350 and 360, one end of the river channel 330 is connected in parallel to the middle of the river channel 350, the other end of the river channel 330 is connected in parallel to the middle of the river channel 360, and the river channel 330 and the river channel 320 are not on the same straight line.

The water intake pump gate 400 is arranged between the water intake end 301 of the river network 300 and the upstream river channel 100, and is used for conveying the superior water bodies in the upstream area into the river network 300 in the plain polder area 10. When the water level of the upstream river channel 100 is higher than the water level of the river channel 310 of the river network 300, the water intake pump gate 400 is opened to draw water; when the water level of the upstream river channel 100 is lower than the water level of the river channel 310 of the river network 300, the intake pump gate 400 is opened to draw water.

The

lift pump gates

500a, 500b are spaced apart within the river network 300. Specifically, lift pump gate 500a is disposed on river channel 350 near the common connection point between

river channels

350, 310, and lift pump gate 500b is disposed on river channel 360 near the common connection point between

river channels

360, 310. The water level at the tail ends of the

river channels

350 and 360 is lifted by the

lifting pump gates

500a and 500b, so that the hydrodynamic force is enhanced, and the water circulation of the river network 300 in the plain polder area 10 is promoted.

The

movable weirs

600a, 600b, 600c, 600d are spaced apart in the river network 300, and serve to increase hydrodynamic force. Specifically, a movable weir 600a is provided on the waterway 370 near the common connection point between the

waterways

370, 320; the movable overflow weir 600b is arranged on the river channel 340 and close to the common connection point between the

river channels

340 and 360; a movable overflow weir 600c is disposed on the waterway 330 near the common junction between the

waterways

330, 360; a movable weir 600d is disposed over the river 370 near the outflow end 302 of the river network 300, the movable weir 600d being adapted to discharge excess water from the river network 300 to the downstream river 200. The heights of the crest of the

movable overflow weirs

600a, 600b, 600c and 600d are sequentially reduced according to the river flow direction of the flat country, so that hydraulic slope is formed, the hydrodynamic force is enhanced, and the controllable and orderly flow of river water flow is implemented.

The

movable overflow weirs

600a, 600b, 600c, 600d are fabricated steel structures, which are located above the river bottom elevation and are movable, and the movable overflow weirs are normally opened to retain water and sink to discharge flood. The

movable overflow weirs

600a, 600b, 600c and 600d can be adjusted up and down to form a water level difference between the upstream and the downstream, the water flow overflows from the weir crest to increase the contact area of the water body and the air, and the ecological floating beds arranged on the upstream and the downstream of the weir improve the ecological effect of the water flow.

When a large amount of flood is required to discharge the flood in the upstream river 100, the intake pump gate 400 is opened, and the gates of the

movable overflow weirs

600a and 600d are lowered to meet the requirements of discharging the flood and passing the flood.

The utility model discloses a theory of operation of plain polder district river network flow increase upgrading system is: a water level drop is formed between the upstream area and the downstream area of the river network 300, and after the water level drop is generated, the water level at the upstream falls to the downstream area, so that the river channel can be oxygenated, and meanwhile, the water level and the flow direction can be controlled by matching with the conventional pump gate.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A river network flow-increasing and quality-improving system for a plain polder area is characterized by comprising:

2. The stream increasing and upgrading system for the river network in the plateau polder area according to claim 1, wherein the river network is composed of a plurality of river channels which are arranged in a criss-cross manner and are communicated with each other.

3. The river network flow increasing and upgrading system for the flat area, according to claim 1, wherein heights of weir tops of the plurality of movable overflow weirs are sequentially decreased according to a river flow direction of the flat area, so that a hydraulic slope is formed.

4. The stream increasing and upgrading system for the river network in the plateau polder area according to claim 1, wherein the movable overflow weir is of an assembled steel structure.

5. The river network flow increasing and quality improving system for the flat area polder according to claim 1, wherein the movable overflow weir is movable above the river bottom elevation, and is normally opened to stop water and sunk to discharge flood.

6. The river network flow increasing and quality improving system for the flat country polder area according to claim 5, wherein the movable overflow weir is adjustable up and down to form a difference between water levels upstream and downstream, water flows overflow from the weir crest to increase the contact area between water and air, and ecological floating beds are arranged upstream and downstream of the weir crest to improve the ecological effect.