CN219430640U - Flood removal and stagnation separation system for high sediment urban landscape river - Google Patents

Abstract

The utility model discloses a flood-cleaning and stagnation-separating system for a multi-sediment urban landscape river, wherein a river landscape water storage area is sequentially divided into a first clear water area, a flood-driving area and a second clear water area from left to right, the flood-driving area penetrates through the landscape water storage area along the water flow direction, and the left side and the right side of the flood-driving area are provided with diversion trench side walls; the upstream and downstream ranges of the first clear water zone and the second clear water zone are consistent with those of the flood discharge zone, the inner sides of the first clear water zone and the second clear water zone are tightly attached to the diversion trench side wall, the outer sides of the first clear water zone and the second clear water zone are provided with river channel natural revetments, the upstream of the first clear water zone and the upstream of the second clear water zone are respectively provided with a water inlet, the upper ends of the diversion trenches of the flood discharge zone are connected with the river channel natural revetments, and the upstream water of the river channel can only enter the diversion trenches; the downstream river is internally provided with a hydraulic dam crossing the river. The system can separate the normally-blocked clear water and the flood-period sediment-rich flood into the independent partitions, can prevent the landscape water body from being damaged, avoid frequent dredging caused by sediment accumulation, and reduce the overall operation cost of the engineering.

Description

Flood removal and stagnation separation system for high sediment urban landscape river

Technical Field

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to a flood removal and stagnation separation system for a high-sediment urban landscape river.

Background

For a multi-sediment urban river, when a hydraulic dam is constructed to store water to form a landscape water surface, the upstream water carries a large amount of sediment, and the water body contains a large amount of impurities and initial rain pollutants, so that the flow velocity is reduced after the water enters a water storage area, a large amount of sediment is deposited, and the quality of the landscape water body is deteriorated.

Most of the current urban landscape river channels drain sediment in a mode of hydraulic dam collapse and flow rate elevation, and dredging is carried out regularly. However, the hydraulic dam can only drain partial sediment before the dam, the sediment draining effect on the upstream in the backwater range is not great, the water storage is required to be drained by regular dredging, the overall landscape image can be destroyed, and the sediment carries impurities and can cause the deterioration of the anaerobic odorizing water quality of the water body by long-term high-temperature irradiation. Therefore, how to solve the clogging problem of the urban landscape river with a large amount of sediment is a technical problem to be solved urgently by the technicians in the field.

Disclosure of Invention

The utility model aims to provide a flood-cleaning and stagnation-separating system for a multi-sediment urban landscape river so as to overcome the technical defects.

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

a flood-clearing and stagnation-separating system for a multi-sediment urban landscape river is characterized in that a river landscape water storage area is divided into three areas, a first clear water area, a flood-passing area and a second clear water area are sequentially arranged from left to right, the flood-passing area penetrates through the landscape water storage area along the water flow direction and is in the form of a return chute, and return chute side walls are arranged on the left side and the right side of the flood-passing area; the upstream and downstream ranges of the first clear water zone and the second clear water zone are consistent with those of the flood discharge zone, the inner sides of the first clear water zone and the second clear water zone are tightly attached to the diversion trench side wall, the outer sides of the first clear water zone and the second clear water zone are provided with river channel natural revetments, the upstream of the first clear water zone and the upstream of the second clear water zone are respectively connected with the diversion trench side walls on two sides of the flood discharge zone, no water inlet exists, the upper ends of diversion trenches of the flood discharge zone are connected with the river channel natural revetments, and the water coming from the upstream of the river channel can only enter the diversion trenches of the flood discharge zone; the downstream river of the river landscape water storage area is internally provided with a hydraulic dam, the hydraulic dam is used for storing water in the river by crossing the river, and the water storage height of the hydraulic dam is higher than the height of the return chute side wall. The hydraulic dam is used for blocking clear water when no rainfall occurs in the flood season, and the hydraulic dam collapses to operate after rainfall occurs in the flood season so as to enable flood to be smooth.

Further, the tail ends of the first clear water zone and the second clear water zone are respectively provided with a gate for storing water, and the gates are arranged close to one side of the flood-running zone and are not communicated with the flood-running zone independently.

Further, the cross section of the flood discharge area return launder is of a regular rectangular groove structure, the flood discharge area return launder comprises two vertical return launder side walls arranged on the left side and the right side of the flood discharge area, a return launder bottom plate is arranged between the bottoms of the two return launder side walls, the height of the return launder side walls is lower than 50cm of the water storage height of the hydraulic dam, and the return launder side walls are submerged below the water level in the normal water storage period.

Preferably, a coarse sand cushion layer is paved below the bottom plate of the return launder, and a PE composite geomembrane is paved below the coarse sand cushion layer of the bottom plate.

Preferably, the cross sections of the first clear water zone and the second clear water zone are irregular cross sections, and the cross section width is widened from upstream to downstream and then is narrow.

Further, the bottom plates of the first clear water area and the second clear water area are pebble bottom plates, and natural river stones, concrete layers, coarse sand cushion layers and PE composite geomembranes are sequentially arranged below the pebble bottom plates from top to bottom.

Further, a downstream pebble river bed is arranged between the tail end of the river landscape water storage area and the hydraulic dam.

Further, the heights of the tail ends of the first clear water zone, the second clear water zone and the flood discharge zone are consistent, and are all connected with a downstream pebble river bed, an expansion joint is arranged at the connection position, the foundation is 50cm wide, and the front-rear end slope ratio is 1:1.

Preferably, the elevation height Yu Gui of the river course natural revetment is 20-30 cm.

The utility model has the following beneficial effects:

1. the utility model divides the river channel into three subareas, the middle is a flood-driving area (namely flood channel), the two sides are clear water areas, the clear water areas are main areas of urban water landscape, the three subareas are all in the water return range of the hydraulic dam, under the condition of no rainfall in the flood season, the sediment quantity of the river channel is small, the three subareas normally block clear water after the downstream hydraulic dam is erected, flood in the flood season comes, the sediment quantity is large, the water body contains a large amount of impurities and initial rain pollutants, after the downstream hydraulic dam collapses, the flood is discharged from the middle flood-driving area without entering the clear water areas at the two sides, and the end gates of the clear water areas at the two sides are closed to maintain the original water storage state, so that the original water storage is kept free from pollution.

2. The flood-clearing and stagnation-separating system provided by the utility model does not influence the normal flood-moving capability of a river channel, and meanwhile, the system can lead clear water which is normally blocked and water with a large amount of silt and flood in the flood season to be in independent partitions, thereby meeting the requirements that a landscape water body is not damaged, avoiding frequent dredging caused by silt deposition and reducing the overall operation cost of engineering.

The foregoing description is only an overview of the technical solution of the present utility model, and in order to make the technical means of the present utility model more clearly understood, it can be implemented according to the content of the specification, and the following detailed description of the preferred embodiments of the present utility model will be given with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other designs and drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a general plan view of the present utility model;

FIG. 2 is a cross-sectional view taken along the direction A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along the B-B direction of FIG. 1;

FIG. 4 is an end plan view of the present utility model;

FIG. 5 is a C-C sectional view of FIG. 4;

FIG. 6 is a D-D sectional view of FIG. 4;

fig. 7 is an E-E sectional view of fig. 4.

Reference numerals illustrate:

1. a first clear water zone;

2. a flood zone; 2.1, a return chute side wall; 2.2, a bottom plate of the return launder;

3. a second clear water zone;

4. river course natural revetment;

5. a downstream pebble river bed;

6. a gate;

7. a hydraulic dam;

8. a coarse sand cushion layer;

9. PE composite geomembrane;

10. natural river stones;

11. a concrete layer;

12. a chamber bottom plate;

13. tooth wall;

14. expansion joints.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Detailed Description

The disclosure of the present utility model will be further understood in conjunction with the following detailed description of the preferred embodiments of the utility model, including examples. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. If the definition of a particular term disclosed in the prior art is inconsistent with any definition provided in the present utility model, the definition of the term provided in the present utility model controls.

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.

Example 1

Referring to fig. 1 and 4, the present embodiment relates to a flood removal and stagnation separation system for a multi-silt urban landscape river, wherein a river landscape water storage area is divided into three areas, namely a first clear water area 1, a flood discharge area 2 and a second clear water area 3 in sequence from left to right, further, the flood discharge area 2 penetrates through the landscape water storage area along the water flow direction, the form is a drainage groove, and the left side and the right side of the flood discharge area 2 are provided with drainage groove side walls 2.1; the upstream and downstream ranges of the first clear water zone 1 and the second clear water zone 3 are consistent with those of the flood discharge zone 2, the inner sides of the first clear water zone 1 and the second clear water zone 3 are tightly attached to the diversion trench side wall 2.1, the outer sides of the first clear water zone 1 and the second clear water zone 3 are provided with river channel natural revetments 4, the upstream sides of the first clear water zone 1 and the second clear water zone 3 are respectively connected with the diversion trench side walls 2.1 at the two sides of the flood discharge zone 2, no water inlet is formed, the upper ends of diversion trenches of the flood discharge zone 2 are connected with the river channel natural revetments 4, and the upstream water of a river channel can only enter the diversion trenches of the flood discharge zone 2; the downstream river of the river landscape water storage area is internally provided with a hydraulic dam 7, the hydraulic dam 7 transversely penetrates through the river for river water storage, and the water storage height of the hydraulic dam 7 is higher than the height of the return chute side wall 2.1. And when no rainfall occurs in the non-flood period, the hydraulic dam 7 stands up to hold clear water, and after the rainfall occurs in the flood period, the hydraulic dam 7 collapses to operate so as to ensure smooth flood.

The river channel is divided into three subareas, the middle is a flood channel (flood area), the two sides are clear water areas, the clear water areas are main areas of urban water landscapes, and the three subareas are all in the backwater range of the hydraulic dam 7. Under the condition of no rainfall in the non-flood period, the sediment quantity of the river is small, three subareas after the downstream hydraulic dam is erected normally block clear water, flood in the flood period comes, the sediment quantity is large in the wrapping of the river, a large amount of impurities and primary rain pollutants are contained in the water body, after the downstream hydraulic dam collapses, the flood is discharged from the middle flood-passing area without entering the clear water areas on two sides, and the tail gates of the clear water areas on two sides are closed to maintain the original water storage state, so that the original water storage is kept free from pollution.

Example 2

The embodiment relates to a flood removal and stagnation separation system for a multi-sediment urban landscape river, as shown in fig. 1, a river landscape water storage area is divided into three areas, namely a first clear water area 1, a flood discharge area 2 and a second clear water area 3 from left to right, further, the flood discharge area 2 penetrates through the whole landscape water storage area, the flood discharge area is in the form of a return chute, the cross section of the flood discharge area is in a regular rectangular groove structure, and the width setting of the flood discharge area is required to meet the flood discharge capacity. Specifically, as shown in fig. 2 and 3, the flood discharge area 2 is composed of two upright C20 concrete flood discharge side walls 2.1, the two flood discharge side walls 2.1 are disposed on the left and right sides of the flood discharge area 2, and bottoms of the two flood discharge side walls 2.1 are connected through a flood discharge bottom plate 2.2. Preferably, the top width of the return launder is 40-50 cm, the height of the return launder side wall 2.1 is 50cm lower than the water storage height of the hydraulic dam 7, and the return launder side wall 2.1 is submerged below the water level in the normal water storage period. It is worth mentioning that the river course retaining is controlled by hydraulic pressure dam 7, and hydraulic pressure dam 7 is located the river course low stream, and when no rainfall in the flood season, the water sand content is low for the upstream river course, and hydraulic pressure dam is the clear water of retaining in clear water district, flood district after standing the dam retaining. When rainfall occurs in the flood season, the sand content of the water coming from the upstream river is large, a large amount of impurities and initial rain pollutants are contained in the water body, the hydraulic dam 7 collapses to operate, the upstream flood is discharged into the downstream river through the return launders of the flood passing area 2, the upstream water inlet channels of the clear water areas on the two sides are closed, the downstream outlet gate 6 is closed, and the original water storage is maintained in the clear water areas and is not influenced by the flood.

As a further improvement of the utility model, referring to fig. 3, the return trough bottom plate 2.2 is a C20 concrete bottom plate with the thickness of 40-50 cm, a coarse sand cushion layer 8 is paved below the return trough bottom plate 2.2, and a PE composite geomembrane 9 is paved below the bottom plate coarse sand cushion layer 8 to prevent the water storage in the return trough from infiltration in the normal water storage period.

The upstream and downstream ranges of the first clear water zone 1 and the second clear water zone 3 are consistent with those of the flood discharge zone, and the first clear water zone 1 and the second clear water zone are the main landscape water storage zones, further, the upstream of the first clear water zone 1 and the second clear water zone 3 are respectively connected with the return chute side walls 2.1 on two sides of the flood discharge zone 2, no water inlet exists, the inner sides of the first clear water zone 1 and the second clear water zone 3 are tightly attached to the return chute side walls 2.1, the outer sides of the first clear water zone 1 and the second clear water zone 3 are provided with river course natural revetments 4, the river course natural revetments 4 are in arc irregular shapes, one side of each river course natural revetment 4 is connected with each return chute side wall 2.1, and accordingly, the inflow water on the upstream of a river course can only enter the return chute of the flood discharge zone 2. Preferably, the elevation of the river course natural revetment 4 is 20-30 cm higher than the side wall of the return groove, and the river course revetment is higher than the normal water storage period.

Further, the cross sections of the first clear water zone 1 and the second clear water zone 3 are irregular cross sections, and the cross section width is widened from upstream to downstream and then is narrow.

As a further improvement of the utility model, referring to fig. 3, the ends of the first clear water zone 1 and the second clear water zone 3 are respectively provided with a gate 6 for storing water, and the gates 6 are arranged near one side of the flood passing zone 2 and are not communicated with the flood passing zone 2 independently. Specifically, the gate 6 is composed of two side walls, a gate chamber bottom plate 12, a gate slot and a flat-plate stop log door, and the structure of the gate 6 is the prior art and will not be described herein. Referring to fig. 5, the gate height is lower than the side wall of the return chute, the width of the upstream and downstream sides of the gate chamber bottom plate 12 is 150cm, the height of the gate chamber bottom plate 12 is consistent with the height of the downstream pebble river bed 5, an expansion joint 14 is arranged at the joint, and a tooth wall 13 is arranged on the foundation.

As a further improvement of the utility model, the bottom plates of the first clear water area 1 and the second clear water area 3 are pebble bottom plates, and natural river stones 10, 5cm cement mortar, 20cm plain concrete, 10cm thick coarse sand cushion layers 8 and PE composite geomembranes 9 with the thickness of 25cm are sequentially arranged below the pebble bottom plates from top to bottom.

Referring to fig. 1, a downstream pebble river bed 5 is provided between the end of the river landscape water storage area and the hydraulic dam 7.

As a further improvement of the utility model, referring to fig. 4-7, the heights of the tail ends of the return launders of the first clear water zone 1, the second clear water zone 3 and the flood discharge zone 2 are consistent, and are all connected with the downstream pebble river bed 5, and expansion joints 14 are arranged in the connection, the foundation is a tooth wall 13 with the bottom width of 50cm and the front-rear end slope ratio of 1:1. Preferably, the expansion joint parting material uses a foam plate and a rubber water stop, and the top is sealed by PTN water stop sealant with the thickness of 2 cm.

Further, the river channel ratio drop of the first clear water zone 1, the flood-passing zone 2 and the second clear water zone 3 is 1.5 per mill.

Example 3

The utility model provides an operation principle of a flood removal and stagnation separation system for a multi-sediment urban landscape river, which comprises the following steps:

the river water storage is controlled by a downstream hydraulic dam 7, when no rainfall occurs in the flood season, the sand content of the upstream river water is low, the water quality is good, the hydraulic dam 7 is used for storing water in the vertical dam, the upstream water flows to the front of the dam through the return groove of the flood passing area 2, and then gradually returns to the upstream water, and the tail end gate of the clear water area is in an open state. After normal water storage is finished, the clear water area and the flood-moving area 2 are filled with the blocked clear water, the accumulation amount is small, and the tail gate 6 of the clear water area is in a closed state. When rainfall in flood season, the water from the upstream river channel has larger sand content, and the water contains a large amount of impurities and initial rain pollutants, the hydraulic dam 7 collapses the dam to run, the upstream flood is discharged into the downstream river channel through the flood discharge area 2, the flood discharge area 2 has smooth and straight form of the return groove, the roughness of the concrete bottom plate is low, the flow rate in the flood discharge area 2 is high, and the accumulation is difficult. The upstream water inlet channels of the clean water 1 on the two sides are closed, the downstream outlet gate 6 is closed, and the original water storage is maintained in the clean water area and is not influenced by flood.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that various changes, modifications, and alterations may be made within the scope of the utility model.

Claims (9)

1. A clear flood divide stagnating system for many silt city view river course, river course view water storage district divide into three district, from left to right is first clear water district (1), moves flood district (2), second clear water district (3) in proper order, its characterized in that: the flood-travelling area (2) penetrates through the landscape water storage area along the water flow direction and is in the form of a return chute, and return chute side walls (2.1) are arranged on the left side and the right side of the flood-travelling area (2); the upstream and downstream ranges of the first clear water zone (1) and the second clear water zone (3) are consistent with those of the flood-driving zone (2), the inner sides of the first clear water zone (1) and the second clear water zone (3) are tightly attached to the return groove side wall (2.1), the outer sides of the first clear water zone (1) and the second clear water zone (3) are provided with river course natural revetments (4), the upstream sides of the first clear water zone (1) and the second clear water zone (3) are respectively connected with the return groove side walls (2.1) at the two sides of the flood-driving zone (2), no water inlet exists, the upper ends of return grooves of the flood-driving zone (2) are connected with the river course natural revetments (4), and the upstream water of a river course can only enter the return grooves of the flood-driving zone (2); a hydraulic dam (7) is arranged in a river channel at the downstream of the river channel landscape water storage area, the hydraulic dam (7) traverses the river channel for storing water in the river channel, and the water storage height of the hydraulic dam (7) is higher than the height of the return chute side wall (2.1).

2. The flood removal and retention system for a silt-rich urban landscape river of claim 1, wherein: the tail ends of the first clear water zone (1) and the second clear water zone (3) are respectively provided with a gate (6) for storing water, and the gates (6) are arranged close to one side of the flood travelling zone (2) and are not communicated with the flood travelling zone (2) independently.

3. The flood removal and retention system for a silt-rich urban landscape river of claim 1, wherein: the cross section of the flood area (2) return launder is of a regular rectangular groove structure, the flood area comprises two vertical return launder side walls (2.1) arranged on the left side and the right side of the flood area (2), a return launder bottom plate (2.2) is arranged between the bottoms of the two return launder side walls (2.1), the height of the return launder side walls (2.1) is lower than the water storage height of the hydraulic dam (7) by 50cm, and the return launder side walls (2.1) are submerged below the water level in the normal water storage period.

4. A flood removal and retention system for a silt rich urban landscape river as claimed in claim 3 and wherein: coarse sand cushion layers (8) are paved below the return chute bottom plates (2.2), and PE composite geomembranes (9) are paved below the bottom plate coarse sand cushion layers (8).

5. The flood removal and retention system for a silt-rich urban landscape river of claim 1, wherein: the cross sections of the first clear water zone (1) and the second clear water zone (3) are irregular cross sections, and the cross section width is widened from upstream to downstream and then is narrow.

6. The flood removal and retention system for a silt-rich urban landscape river of claim 1, wherein: the bottom plates of the first clear water area (1) and the second clear water area (3) are pebble bottom plates, and natural river stones (10), concrete layers (11), coarse sand cushion layers (8) and PE composite geomembranes (9) are sequentially arranged below the pebble bottom plates from top to bottom.

7. The flood removal and retention system for a silt-rich urban landscape river of claim 1, wherein: a downstream pebble river bed (5) is arranged between the tail end of the river landscape water storage area and the hydraulic dam (7).

8. The flood removal and retention system for a silt rich urban landscape river of claim 7, wherein: the tail ends of the return launders of the first clear water zone (1), the second clear water zone (3) and the flood discharge zone (2) are consistent in elevation, and are connected with a downstream pebble river bed (5), an expansion joint (14) is arranged at the connection position, the foundation is 50cm wide, and the front-back end slope ratio is 1:1 of a tooth wall (13).

9. The flood removal and retention system for a silt-rich urban landscape river of claim 1, wherein: the elevation height Yu Gui of the river natural revetment (4) is 20-30 cm along the side wall (2.1) of the launder.