CN210946670U

CN210946670U - River structure suitable for urban river water ecology and water landscape improvement

Info

Publication number: CN210946670U
Application number: CN201921111005.6U
Authority: CN
Inventors: 王道虎; 周凤扬; 谢亚军; 周金晶; 范海平; 曾曾; 臧克家; 皇甫全欢; 孟佳佳; 罗静; 孙海波
Original assignee: Huai'an Water Conservancy Planning Service Center
Current assignee: Huai'an Water Conservancy Planning Service Center
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-07-07
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a river structure suitable for urban river water ecology and water landscape improvement, which comprises a landscape gate dam, a embankment, a platform and a gentle slope; building landscape gate dams at proper positions at two ends of the riverway to block high water in the river, and ensuring the normal water level of the riverway in the flood running period of the river or in dry seasons; and (4) carrying out dike descending, slope relieving, platform building and greening landscaping on the river levee between the two gates. The utility model discloses an urban river administers and provides neotype river course spatial structure, not only satisfies river course flood control waterlogging removal essential function, still satisfies water ecological environment integrated function, adapts to new period hydraulic work needs.

Description

River structure suitable for urban river water ecology and water landscape improvement

Technical Field

The utility model belongs to the hydraulic engineering field, in particular to be suitable for river structure that urban area river course water ecology and water landscape promoted.

Background

The urban river water ecological environment engineering aims at improving the ecological structure and functions of a river ecological system, enabling the river to be closer to the natural state and creating a good human-living environment besides improving the basic functions of flood control, waterlogging removal, shipping, water supply and the like in river management. The river structure refers to the three-dimensional scale of a river, and in the longitudinal direction, a river system is characterized by heterogeneity, tortuosity and section shape diversity; in the transverse direction, the river consists of a riparian zone, a dike, a beach, a water body and a riverbed and shows the interaction between the water body and the land; vertically, the river system manifests itself as the effects of groundwater on the hydrological elements and chemical composition of the river, and the interaction of the river with organisms living in the bed bottom. The cross-dimension is the most prominent structural pattern of the river. Cities are closely related to rivers, and rivers flowing through the cities have particularity and are endowed with more functions, so that the cities need to be integrated with partial functions of the cities besides the traditional water conservancy function, namely natural ecology, tourism and leisure, urban landscape, cultural activities and the like.

In recent years, along with the acceleration of the urbanization process, the contradiction that the land development and construction along the river channel contends with water is increasingly prominent, and the phenomenon that the cross section of the urban river channel is artificially narrowed is serious. In the initial stage of urbanization, the basic function is emphasized on one side, and the composite ecological function of the river channel is ignored, so that the phenomena of hardening, canalization and straightening of the river channel treatment commonly exist, the ecological system of the river channel is damaged, and the ecological function is lost. Therefore, advanced river treatment concepts and measures are of great importance in the river treatment process. The river channel is used as an important ecological corridor, and a river structural form integrating multiple functions of clean water quality of river water, wide water space, beautiful ecological environment and the like is found, so that the important problem of river channel treatment in urban areas is solved.

Disclosure of Invention

The utility model aims to provide a: designing a river structure suitable for improving the water ecology and water landscape of urban river channels, and providing a novel river channel space structure for urban river channel treatment; newly building a control gate station to meet the basic functions of flood control and waterlogging removal of the river; the elevation of the dike is reduced, and the gentle slope is built and is combined with the dike landscaping to meet the comprehensive function of the water ecological environment and meet the requirement of water conservancy work in a new period.

The utility model discloses a solution is: the river structure suitable for urban river water ecology and water landscape improvement comprises a landscape gate dam, a dike, a platform and a gentle slope; building landscape gate dams at proper positions at two ends of the riverway to block high water in the river, and ensuring the normal water level of the riverway in the flood running period of the river or in dry seasons; and (4) carrying out dike descending, slope relieving, platform building and greening landscaping on the river levee between the two gates.

Furthermore, the landscape gate dam positions at two ends of the river channel are selected, the factors of urban area range, traffic and engineering occupation are generally considered comprehensively, external high water is blocked, and the flood control and drainage functions of the internal river channel are borne by double gates and stations; the mode of combining the gate, the station and the bridge is adopted, the double gates are closed in a high water period, and flood spills are blocked; pumping out waterlogging of the river reach between the two gates through a pump station; and the gate is opened in a non-high water period so as to ensure the continuity and integrity of the river channel.

Furthermore, the river levee between the double gates is descended, the height of the top of the levee is not limited by design specifications of the levee, a certain height of 0.5m is additionally added according to the highest water level of the history, and the levee is generally descended by 1-3 meters.

Furthermore, after the embankment is lowered, the embankment body becomes wide, and a gentle slope 1 is built: 10 or more, shows hydrophilic.

Furthermore, a hydrophilic platform is built on the water-facing side of the dike, ecological interlocking concrete block protection is carried out on the river slope, greening transformation is carried out on the top surface and the water-backing side of the dike, trees and turf are planted, and shrubs are arranged sporadically to construct a riverside vegetation buffer zone.

Furthermore, renovation and transformation are carried out on the river between the double gates, the shape of the river is set based on the shape of the original water body, but the bayonet of the river channel is eliminated, the river channel is locally enlarged, the bent natural shape is increased, the wider water surface of the river is set to be a natural bay of aquatic animals and plants, and submerged plants and emergent plants are planted in the riparian zone of the river channel so as to adsorb ammonia nitrogen eutrophic substances.

The utility model has the advantages that:

1. the utility model is suitable for a large river course of non-flood carrying in urban area within range, application scope is wide.

2. The traditional method of 'flood control and city enclosing' is changed by constructing control gate station projects at two ends of a river channel;

3. by reducing the elevation of the river levee, greening engineering, a hydrophilic platform and the like are implemented on the river, and the hydrophilic leisure requirements of citizens are met;

4. ecological reconstruction is carried out on dikes on two sides of the river channel, the water environment and the water ecology of the river channel are effectively guaranteed, and the multifunctional requirement of urban economic and social development on the river channel is met.

5. The urban flood control battle line is shortened, and the flood control and flood fighting pressure in urban areas is reduced.

Drawings

FIG. 1 is a schematic cross-sectional view of a typical canal and river structure in a Huaian city district;

in the figure: 1 arbor, turf, 2 shrub, 3 submerged and emergent aquatic plants.

Detailed Description

The technical scheme of the utility model is further explained in the following by combining the attached drawings.

As shown in fig. 1, it is a schematic cross-sectional view of a canal river in a city district of Huaian city. A Huai Yin ship lock at the west side of a canal west in a Huai ' an city zone and a Huai ' an ship lock at the south end of the Huai ' an city zone from south to south are level-crossed with a Subei irrigation main canal, the total length of a river channel is 25.7km, the river bottom height is about 5.5m, the dike top height is 11.5-13.6 m, the river mouth width is about 100m, the canalization water level is about 9.5m, and the normal water depth is 3-5 m. The historical highest water level reaches 10.51m, and the lowest water level is 8.21 m.

The standard of 34.63km embankment sections is insufficient before the transformation of the inner canal, and the river passing through embankment buildings, docks and cargo yards along the line has a low flood control standard. As the river channel is positioned in the main urban area, if danger removing and reinforcing engineering measures such as standard reaching of dikes, dangerous work treatment and the like are adopted, the method of flood control, namely 'the enclosed city' is in conflict with urban planning and construction, and the implementation of the flood control scheme is difficult.

In 2018, in order to avoid the 'city surrounding effect' of flood control, a Tangerine lane and a north gate bridge control project are implemented at the south and north ends of a canal in Huaian city, and the distance between two gates is about 16 km. After the river course is built, the river course between the regions becomes an urban inland river, and the water level can be kept at 9.5-10.0 m. The elevation of the levee top is controlled to be about 11.0m according to the designed water level and a certain extra height; after the embankment is descended, the width of the embankment body exceeds 20 m; arranging a hydrophilic platform on the water-facing side of the dike, constructing a river slope into a gentle slope of 1: 8-1: 10, locally protecting ecological interlocking concrete blocks, implementing greening landscape improvement and transformation on the top surface and the water-back side of the dike, planting trees and turf 1, sporadically arranging shrubs 2, and constructing a riverside vegetation buffer zone; dredging the river channel between the double gates, locally widening the river channel to about 250m, and recovering the natural form of the river channel; submerged and emergent aquatic plants 3 are planted along the bank zone.

The utility model discloses an implementation has alleviateed urban area flood control pressure, has reached apparent aqueous dew hydrophilicity, improves the people and lives the environment, promotes the purpose of city grade. At present, the canal culture gallery engineering of canal in a city section becomes a key promotion project of Huaian, and the canal culture gallery engineering is created into a five-A-level world canal culture tourism area integrating the functions of Huaian historical culture experience, world canal culture exhibition and communication center, water amusement, live-action performance, health preservation vacation, business meeting and the like.

Claims

1. Be suitable for urban area river course water ecology and water landscape's river structure that promotes, characterized by: the device comprises a landscape gate dam, a dike, a platform and a gentle slope; building landscape gate dams at proper positions at two ends of the riverway to block high water in the river, and ensuring the normal water level of the riverway in the flood running period of the river or in dry seasons; and the river levee between the two gates is subjected to dike descending, slope relieving, platform building and greening landscaping.

2. The river structure suitable for urban river water ecology and water landscape improvement according to claim 1, wherein: the landscape gate dam positions at two ends of the river channel are selected, urban area range, traffic and engineering occupation factors are generally considered comprehensively, external high water is blocked, and the flood control and drainage functions of the internal river channel are borne by double gates and stations; the mode of combining the gate, the station and the bridge is adopted, the double gates are closed in a high water period, and flood spills are blocked; pumping out waterlogging of the river reach between the two gates through a pump station; and the gate is opened in a non-high water period so as to ensure the continuity and integrity of the river channel.

3. The river structure suitable for urban river water ecology and water landscape improvement according to claim 1, wherein: and (3) carrying out dike descending on the river dike between the double gates, wherein the elevation of the top of the dike is not limited by the design specification of the dike, and the dike is reduced by 1-3 meters under the control of a certain height of 0.5m according to the historical highest water level.

4. The river structure suitable for urban river water ecology and water landscape improvement according to claim 1, wherein: after the embankment is descended, the embankment body becomes wide, and a gentle slope 1 is built: 10 or more, shows hydrophilic.

5. The river structure suitable for urban river water ecology and water landscape improvement according to claim 1, wherein: a hydrophilic platform is built on the upstream side of the dike, the river slope is protected by ecological interlocking concrete blocks, greening transformation is implemented on the top surface and the downstream side of the dike, trees and turf are planted, and shrubs are sporadically arranged to construct a riverside vegetation buffer zone.

6. The river structure suitable for urban river water ecology and water landscape improvement according to claim 1, wherein: the method is characterized in that renovation and transformation are carried out on a river between double gates, the river shape is set based on the original water body shape, but a channel bayonet is eliminated, the river channel is locally enlarged, the bent natural shape is increased, a wider water surface of the river is set to be a natural bay of aquatic animals and plants, and submerged plants and emergent plants are planted in the riverway along the bank band to adsorb ammonia nitrogen rich nutrient substances.