CN210177445U - Regulation and waterlogging prevention system for increasing water storage capacity of urban river - Google Patents
Regulation and waterlogging prevention system for increasing water storage capacity of urban river Download PDFInfo
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- CN210177445U CN210177445U CN201920569904.4U CN201920569904U CN210177445U CN 210177445 U CN210177445 U CN 210177445U CN 201920569904 U CN201920569904 U CN 201920569904U CN 210177445 U CN210177445 U CN 210177445U
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Abstract
The utility model provides a regulation and storage flood prevention system for increasing the water storage capacity of an urban river, which comprises an overflow dike, a wet pond wetland area and a river bank land area which are sequentially arranged from the river to the river bank; the top of the overflow dam is higher than the lowest water level of the river and lower than the highest water level of the river, the bank slope of the overflow dam facing the river is connected with the river slope of the river, a drain pipe leading from a wet pond in a wet pond wetland area to the river is embedded in the overflow dam, a check valve is arranged at the first end of the drain pipe extending into the river, and the check valve is not higher than the lowest water level of the river; a water collecting well is arranged in a wet pond of the wet pond wetland area, a water inlet of the water collecting well is not higher than the lowest water level of a river channel, and the drain pipe extends into the second end of the wet pond and is positioned in the water collecting well; and the land area of the river bank is not lower than the highest water level of the river channel. The utility model discloses can enrich the ecological environment of river course shore hosepipe, increase the regulation volume in river course.
Description
Technical Field
The utility model relates to a hydraulic engineering technical field especially relates to an increase regulation and storage prevention waterlogging system of urban river water storage capacity.
Background
In recent years, some cities have waterlogging caused by heavy rainfall every year. Urban waterlogging mainly manifests as river formation in streets, water intake of houses and river water backflow, and reflects the problems of urban drainage engineering (such as river regulation and storage).
In order to solve the problem of large-scale runoff of urban rainwater, local partial consumption is the best method, but a place for absorbing rainwater is needed, namely, a river channel needs to have enough regulation and storage capacity. The storage amount of the river needs to be increased, the simplest method is to enlarge the size of the river and increase the scale of the river, but the enlarged scale of the river occupies precious land for urban construction. The urban land is increasingly tense, and the conditions for enlarging the river channel to reduce waterlogging are not met. Therefore, it is necessary to find other space to absorb rainwater.
As shown in fig. 1, 3 segments of river bank slopes are provided on the south bank of a river in the new Shanghai Pudong area, the existing mud surface line 81 of the mud surface layer 8 extends from the river 1 to the land, the unfavorable geological bank line is 2100m long, and according to the blue line of the river, part of the existing river is located outside the blue line of the river. If the construction is carried out according to the blue line of the river channel, part of the existing river channel needs to be backfilled to build the originally planned river bank 7. If the originally planned river bank 7 is built, the height of the originally planned river bank 7 is about 4.2m, the embankment load is large, however, the river bank slope is provided with the silt clay layers 8, the thickness of the silt clay layers 8 is uneven, and the partial layer surfaces of the silt clay layers 8 are inclined planes and easily slide under the load action. Therefore, before the originally planned river bank 7 is constructed, a foundation treatment is required, which further increases the construction investment. In addition, the originally planned river bank 7 occupies more existing river channels, the originally planned landscape land is 20m away from the originally planned river channel upper opening line, and the river channel 1 is not organically combined with the originally planned landscape land. If the originally planned embankment scheme is adopted according to the blue line of the river channel, the storage regulation amount of the river channel 1 is very limited.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art, the to-be-solved technical problem of the utility model is to provide an increase regulation and prevention waterlogging system of city river course water storage capacity, with the wet pond wetland region as the ecological landscape of river course both sides to combine organically through overflow bank and river course, enrich the ecological environment of river course shore area, participate in the regulation work in river course, increase the regulation volume in river course, thereby improve the prevention waterlogging ability in city.
In order to solve the technical problem, the utility model provides a regulation and storage waterlogging prevention system for increasing the water storage capacity of an urban river, which comprises an overflow dike, a wet pond wetland area and a river bank land area which are sequentially arranged from the river to the river bank;
the top of the overflow dam is higher than the lowest water level of the river and lower than the highest water level of the river, the bank slope of the overflow dam facing the river is connected with the river slope of the river, a drain pipe leading from a wet pond in a wet pond wetland area to the river is embedded in the overflow dam, a check valve is arranged at the first end of the drain pipe extending into the river, and the check valve is not higher than the lowest water level of the river;
a water collecting well is arranged in a wet pond of the wet pond wetland area, a water inlet of the water collecting well is not higher than the lowest water level of a river channel, and the drain pipe extends into the second end of the wet pond and is positioned in the water collecting well;
and the land area of the river bank is not lower than the highest water level of the river channel.
Preferably, the top of the overflow dam is higher than the designed water level of the river.
Preferably, the wetland in the wet pond wetland area comprises a shallow marsh area and a deep marsh area, the water depth range of the shallow marsh area is 0-0.3 m, and the water depth range of the deep marsh area is 0.3-0.5 m.
Preferably, aquatic plants are planted on the river slope of the river channel, and the aquatic plants spread to the bottom of the river channel.
Preferably, the wetland area of the wet pond and the land area of the river bank jointly construct a tree-shrub-grass combined three-dimensional plant system.
Preferably, waterlogging-tolerant plants are planted in the wet ponds and/or wetlands of the wet pond-wetland area.
Preferably, the wet pond comprises a main pond and a preposed pond which are mutually communicated through a water distribution gabion, a pond slope of the main pond close to the overflow dike is connected with a dike slope of the overflow dike opposite to the river channel, a protection slope is arranged between the pond slope of the preposed pond close to the river bank land area and the river bank land area, and the preposed pond is communicated with an urban rainwater pipe and canal system distributed on the river bank land area; the water collecting well is arranged in the main pond.
Preferably, the check valve comprises a valve body and a valve core, a valve core cavity for the valve core to sink and float is arranged in the valve body, the bottom of the valve core cavity is communicated with the drain pipe, a water outlet communicated with a river channel is formed in the middle of the valve core cavity, the top of the valve core cavity is larger than the valve core, and the valve core is matched with the bottom of the valve core cavity in a plugging mode.
As above, the utility model discloses an increase regulation and prevention waterlogging system of city river water storage has following beneficial effect: the utility model discloses a regulation and storage flood control system arranges overflow dyke, wet pond wetland region and river bank land region in proper order from river course to river bank direction in order to avoid building original planning river bank, replaces original planning river bank with overflow dyke and wet pond wetland region, has so both increased greenery patches area, can regard as the regulation space in river course again. When the water level of the river channel is higher than the overflow dam, the water of the river channel overflows into the wet pond wetland area through the overflow dam to participate in the waterlogging prevention work of the river channel; when the water level of the river channel is not higher than the overflow dam, the wet pond wetland area plays the role of ecological landscape. Therefore, the wet pond wetland area is organically combined with the river channel through the overflow dam, and the functions of regulation, waterlogging prevention, ecological landscape enrichment and the like of the wet pond wetland area are realized.
Drawings
FIG. 1 is a schematic diagram of a prior art planned river bank;
fig. 2 is a schematic diagram of a first embodiment of the storage regulation and waterlogging prevention system of the present invention;
fig. 3 is a schematic diagram of a second embodiment of the storage regulation and waterlogging prevention system of the present invention;
FIG. 4 is a view showing an open state of the check valve;
fig. 5 shows a closed state diagram of the non-return valve.
Description of the element reference numerals
1 river course
11 lowest water level
12 designed water level
13 highest water level
2 Overflow dyke
21 drain pipe
3 wet pond wetland area
31 wet pond
311 Main pond
312 leading pond
313 water distribution gabion
314 water collecting well
315 reserved silt sedimentation area
Land area of 4 river bank
5 check valve
51 valve body
511 valve core chamber
52 valve core
6 urban rainwater pipe canal system
7 originally planning river levee
8 silt clay layer
81 Current mud line
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
As shown in fig. 1 and 2, the utility model provides a regulation and storage flood prevention system for increasing the water storage capacity of an urban river, which comprises an overflow dike 2, a wet pond wetland area 3 and a river bank land area 4 which are sequentially arranged from a river 1 to a river bank direction;
the system comprises an overflow dike 2, wherein the top of the dike (one side of the top of the dike close to the river channel 1 is generally superposed with a designed water level control line) of the overflow dike 2 is higher than the lowest water level 11 of the river channel 1 and lower than the highest water level 13 of the river channel 1, the dike slope of the overflow dike 2 facing the river channel 1 is connected with the river slope of the river channel 1, a drain pipe 21 leading from a wet pond 31 of a wet pond wetland area 3 to the river channel 1 is embedded in the overflow dike 2, a check valve 5 is arranged at the first end of the drain pipe 21 extending into the river channel 1, and the check valve 5 is not higher than;
a water collecting well 314 is arranged in a wet pond wetland area 3 and a wet pond 31 (the wet pond 31 is generally arranged at the upper opening line of an originally planned riverway, and a reserved sediment sedimentation area 315 can be arranged at the bottom of the wet pond 31) of the wet pond wetland area 3, the water inlet of the water collecting well 314 is not higher than the lowest water level 11 of the riverway 1, and the drain pipe 21 extends into the second end of the wet pond 31 and is positioned in the water collecting well 314;
the land area 4 of the river bank, the land area 4 of the river bank is not lower than the highest water level 13 of the river channel 1.
The utility model discloses a regulation and storage flood control system arranges overflow embankment 2, wet pond wetland region 3 and bank land region 4 in proper order from river course 1 to bank direction in order to avoid building original planning embankment 7, replaces original planning embankment 7 with overflow embankment 2 and wet pond wetland region 3, has so both increased greenery patches area, can regard as the regulation space of river course 1 again. When the water level of the river channel is higher than the overflow dam 2, the water of the river channel 1 overflows into the wet pond wetland area 3 through the overflow dam 2 to participate in the waterlogging prevention work of the river channel 1, and the wet pond wetland area 3 at least increases 23% of the storage regulation amount of the river channel 1; when the water level of the river channel is not higher than the overflow dam 2, the wet pond wetland area 3 plays the role of ecological landscape. Therefore, the wet pond wetland area 3 is organically combined with the river channel 1 through the overflow dam 2, and the functions of regulation, waterlogging prevention, ecological landscape enrichment and the like of the wet pond wetland area 3 are realized.
In order to realize the functions of regulation, storage, waterlogging prevention and ecological landscape enrichment of the wet pond and wetland area 3, a drain pipe 21 leading from the wet pond 31 of the wet pond and wetland area 3 to the river channel 1 is embedded in the overflow dam 2, a check valve 5 is arranged at the first end of the drain pipe 21 extending into the river channel 1, and the second end of the drain pipe 21 extending into the wet pond 31 is positioned in the water collecting well 314. The check valve 5 can realize the functions of automatic drainage and automatic interception. Wet pond wetland area 3 combines with river course 1 organically, makes the utility model discloses a regulation and prevention waterlogging system need not power when regulation and discharge waterlogging, need not manual operation, according to the water head difference between wet pond wetland area 3 and the river course 1 completely, accomplishes automatic retaining, the work of automatic emission soaring. The specific principle is as follows:
(1) regulation and storage principle of waterlogging
Under normal conditions, the wet pond wetland area 3 can be in a water-free state or a state of storing a small amount of water, and the ecological benefit of the wet pond wetland area 3 is brought into play; when the water level of the river channel 1 is lower than the top of the overflow dike 2, the check valve 5 is in a closed state, that is, the water in the river channel 1 cannot enter the drain pipe 21 through the check valve 5.
When rainfall occurs and the river water level exceeds the top of the overflow dike 2, the water in the river 1 overflows into the wet pond wetland area 3 through the top of the overflow dike 2 and then rises to the highest water level 13 of the river 1 together with the river water level.
(2) Drainage soaring principle
When the water level of the river channel is lowered, the waterlogging stored in the wet pond wetland area 3 is drained into the river channel 1 through the top of the dike of the overflow dike 2; when the water level of the river channel continues to fall and is lower than the top of the overflow dike 2, the water level of the wet pond wetland area 3 is higher than the water level of the river channel, the check valve 5 is in an open state under the action of the water pressure in the drain pipe 21, and the water in the wet pond wetland area 3 is discharged to the river channel 1 through the drain pipe 21; when the river water level is lowered to the lowest water level 11, the water in the wet pond wetland area 3 is emptied, and the storage space of the wet pond wetland area 3 is vacated for the next water storage.
The utility model discloses a regulation and storage prevention waterlogging system is with wet pond wetland regional 3 as the ecological landscape of river course both sides to combine organically through overflow levee 2 and river course 1, enrich the ecological environment of river course shore area, participate in the regulation work of river course 1, increase river course 1's regulation volume, thereby improve the prevention waterlogging ability in city.
Therefore, the utility model discloses a regulation and prevention waterlogging system is under the condition that does not increase river course land used, does not change the river course scale, and wet pond wetland is regional 3 is add to 1 both sides in river course to increase river course 1's regulation volume, increase the ecological variety of view. Parks adjacent to the river 1, urban green belts, green belts near expressways and overpasses, urban low-lying areas, areas with sufficient catchment surfaces and large runoff flood discharge pressure, etc. can be converted into wet pond wetland areas 3. When the wet pond wetland area 3 drains water into the river channel 1 through the drain pipe 21, the wet pond wetland area 3 can purify accumulated rainwater and regulate and store waterlogging of the river channel 1. On the premise of meeting and ensuring the flood control and drainage functions of the river channel 1, the river channel 1 is organically combined with the wet pond wetland area 3, and the regulation and storage amount of the river channel 1 is increased. The regulation and storage waterlogging prevention system aims at recovering and reconstructing a river bank ecological system and landscape thereof, changes the traditional water conservancy planning design, incorporates the ecological principle into the water conservancy planning design, constructs a landscape river channel with a hydrophilic idea, and realizes the water conservancy construction idea of harmonious harmony between people and nature.
The river channel 1 can be wide or narrow, can be bent or straight, can widen one section of the river channel 1 into a lake, and can form a small river center island in the middle of the river channel 1.
The top of the overflow dam 2 is higher than the designed water level 12 of the river channel 1. Thus, when the river water level is higher than the designed water level 12 of the river 1, the water in the river 1 flows into the wet-pond wetland area 3 through the top of the overflow dam 2.
In order to enrich the ecological environment of the wet pond wetland area 3, the wetland of the wet pond wetland area 3 comprises a shallow marsh area and a deep marsh area, the water depth range of the shallow marsh area is 0-0.3 m, the water depth range of the deep marsh area is 0.3-0.5 m, and therefore different types of aquatic plants can be planted according to different water depths.
In order to delay the inflow of waterlogging into the river channel 1 during heavy rains and facilitate the exchange of river water and groundwater in daily life, aquatic plants are planted on the river slope of the river channel 1 and spread to the river bottom of the river channel 1.
In order to accelerate the recovery of natural vegetation and promote the formation of ecological communities, the wet pond wetland area 3 and the riparian land area 4 jointly construct a tree-shrub-grass combined three-dimensional plant system. Meanwhile, aquatic organisms are contained in the river channel 1, a natural landscape line is formed in the waterfront area together, the ecological landscape of the river channel 1 is beautified, inhabitation places are provided for wild animals such as birds, and harmony between people and nature is achieved.
The wet pond wetland area 3 is an amphibious cross-over zone between the river channel 1 and the riparian land area 4, and the vegetation of the wet pond wetland area should change according to local climate, soil, microtopography, water body nutrition conditions and hydrological conditions. The ecological functions of the wet pond and wetland area 3 include maintaining species diversity, intercepting and filtering material flow, breeding fish, stabilizing adjacent ecological system, purifying water, etc., and provide suitable living environment for native animals and plants and foreign species introduced by special requirements. In addition, the area between the wet pond wetland area 3 and the river bank land area 4 changes the prior concrete and rock block masonry structure type, adopts a soft grass planting slope returning to nature as far as possible, and is combined with the green land scenic spots along the river bank.
In order to avoid that the plants in the wet pond wetland area 3 are drowned by waterlogging, the wet pond 31 and/or the wetland in the wet pond wetland area 3 is planted with waterlogging-resistant plants.
As shown in fig. 3, in order to deposit the impurities in the urban rainwater pipe canal system 6, the wet pond 31 includes a main pond 311 and a pre-pond 312 which are communicated with each other through a water distribution gabion 313, a pond slope of the main pond 311 close to the overflow dam 2 is connected with a bank slope of the overflow dam 2 opposite to the river channel 1, a revetment is arranged between the pond slope of the pre-pond 312 close to the river bank land area 4 and the river bank land area 4, and the pre-pond 312 is communicated with the urban rainwater pipe canal system 6 distributed on the river bank land area 4; the sump 314 is disposed in the main pond 311.
As shown in fig. 4 and 5, the check valve 5 includes a valve body 51 and a valve core 52, the valve body 51 has a valve core cavity 511 for the valve core 52 to sink and float, the bottom of the valve core cavity 511 is communicated with the drain pipe 21, the middle of the valve core cavity 511 is provided with a water outlet communicated with the river channel 1, the top of the valve core cavity 511 is larger than the valve core 52, and the valve core 52 is matched with the bottom of the valve core cavity 511 in a plugging manner. The specific gravity of the valve element 52 is slightly greater than that of water. The valve core 52 is generally spherical.
The working principle of the check valve 5 is to utilize the self weight and the internal and external water pressure difference of the valve core 52 to complete the opening or closing of the check valve, that is, the valve core 52 is sunk and floated by the water pressure, so as to realize the opening or closing of the check valve 5, and the specific principle is as follows:
as shown in fig. 4, the check valve 5 is automatically operated: when the water level of the wet pond 31 is higher than the river water level, the water pressure of the wet pond 31 is higher than the sum of the self weight of the valve core 52 and the river water pressure, the valve core 52 floats to the top of the valve core cavity 511, the water flow is not blocked from flowing to the river 1, and at the moment, the check valve 5 is in an open state.
As shown in fig. 5, when the water level of the wet pond 31 is lower than the river water level, under the combined action of the self weight and the river water pressure of the valve core 52, the valve core 52 sinks to the bottom of the valve core cavity 511, and forms a plugging fit with the bottom of the valve core cavity 511, so as to cut off the water flow, and prevent the water in the river 1 from flowing to the wet pond 31, and at this time, the bottom of the valve core cavity 511 is in a closed state.
To sum up, the utility model discloses a regulation and storage prevention waterlogging system is with wet pond wetland area as the ecological landscape of river course both sides to combine organically through overflow bank and river course, enrich the ecological environment of river course shore area, participate in the regulation work in river course, increase the regulation volume in river course, thereby improve the prevention waterlogging ability in city. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may 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 (8)
1. A regulation and storage waterlogging prevention system for increasing the water storage capacity of an urban river channel is characterized by comprising an overflow dike (2), a wet pond wetland area (3) and a river bank land area (4) which are sequentially arranged from the river channel (1) to a river bank;
the river channel drainage system comprises an overflow dike (2), wherein the top of the overflow dike (2) is higher than the lowest water level (11) of a river channel (1) and lower than the highest water level (13) of the river channel (1), the dike slope of the overflow dike (2) facing the river channel (1) is connected with the river slope of the river channel (1), a drainage pipe (21) leading from a wet pond (31) of a wet pond wetland area (3) to the river channel (1) is buried in the overflow dike (2), a check valve (5) is arranged at the first end, extending into the river channel (1), of the drainage pipe (21), and the check valve (5) is not higher than the lowest water level (11) of the river channel (1);
a water collecting well (314) is arranged in a wet pond (31) of the wet pond wetland area (3), a water inlet of the water collecting well (314) is not higher than the lowest water level (11) of the river channel (1), and a second end of the drain pipe (21) extending into the wet pond (31) is positioned in the water collecting well (314);
the river bank land area (4) is not lower than the highest water level (13) of the river channel (1).
2. The system of claim 1, wherein the system is characterized in that: the top of the overflow dike (2) is higher than the designed water level (12) of the river channel (1).
3. The system of claim 1, wherein the system is characterized in that: the wetland of the wet pond wetland area (3) comprises a shallow marsh area and a deep marsh area, the water depth range of the shallow marsh area is 0-0.3 m, and the water depth range of the deep marsh area is 0.3-0.5 m.
4. The system of claim 1, wherein the system is characterized in that: aquatic plants are planted on the river slope of the river channel (1), and the aquatic plants spread to the bottom of the river channel (1).
5. The system of claim 1, wherein the system is characterized in that: and the wet pond wetland area (3) and the riparian land area (4) jointly construct a tree-shrub-grass combined three-dimensional plant system.
6. The system of claim 1, wherein the system is characterized in that: waterlogging-resistant plants are planted in the wet pond (31) and/or the wetland of the wet pond and wetland area (3).
7. The system of claim 1, wherein the system is characterized in that: the wet pond (31) comprises a main pond (311) and a preposed pond (312) which are mutually communicated through a water distribution gabion (313), wherein a pond slope of the main pond (311) close to the overflow dike (2) is connected with a dike slope of the overflow dike (2) back to the river channel (1), a protection slope is arranged between the pond slope of the preposed pond (312) close to the river bank land area (4) and the river bank land area (4), and the preposed pond (312) is communicated with an urban rainwater pipe and channel system (6) distributed on the river bank land area (4); the water collecting well (314) is arranged in the main pond (311).
8. The system of claim 1, wherein the system is characterized in that: the check valve (5) comprises a valve body (51) and a valve core (52), a valve core cavity (511) for the valve core (52) to sink and float is formed in the valve body (51), the bottom of the valve core cavity (511) is communicated with a drain pipe (21), a water outlet communicated with a river channel (1) is formed in the middle of the valve core cavity (511), the top of the valve core cavity (511) is larger than the valve core (52), and the valve core (52) is matched with the bottom of the valve core cavity (511) in a plugging mode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117513506A (en) * | 2023-11-30 | 2024-02-06 | 广州珠科院工程勘察设计有限公司 | Water storage and drainage control device for reducing river water level |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117513506A (en) * | 2023-11-30 | 2024-02-06 | 广州珠科院工程勘察设计有限公司 | Water storage and drainage control device for reducing river water level |
| CN117513506B (en) * | 2023-11-30 | 2024-04-26 | 广州珠科院工程勘察设计有限公司 | Water storage and drainage control device for reducing river water level |
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