Coastal shallow wetland construction method for hard landing river routes

A construction method and channel technology, applied in the construction of nearshore shoal wetlands, can solve the problems of limited interception capacity and treatment capacity, unsatisfactory treatment effect, single type of pollutant removal, etc., to achieve in-situ restoration and reduce erosion erosion , the effect of reducing the amount of excavation

Active Publication Date: 2017-05-31
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned deficiencies existing in the prior art, the technical problem to be solved by the present invention is: the existing wetland system has limited ability to intercept and treat pollutants in water, the types of pollutants to be removed are relatively single, and the treatment effect is unsatisfactory. To provide a method for constructing near-shore shoal wetlands with diversified functions for hard revetment channels. This method has the characteristics of good ecological restoration effect, complete functions, and universal application to various channels.

Method used

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  • Coastal shallow wetland construction method for hard landing river routes
  • Coastal shallow wetland construction method for hard landing river routes
  • Coastal shallow wetland construction method for hard landing river routes

Examples

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Effect test

Embodiment 1

[0034] A method for constructing near-shore shoal wetlands for hard revetment channels, using the following steps to construct:

[0035] 1) On both sides of the river, log piles are selected at the position where the difference between the height of the silt and the height of the water surface is +0.2 m, so that the shape of the wetland unit enclosed by the wooden pile and the river bank is rectangular, the length of the wetland unit is 6 m, and the area is 24 mm 2 , the maximum width of a wetland unit perpendicular to the river bank accounts for 10% of the channel width, the distance between adjacent wetland units on the same side of the river bank is 4 times the width of the river flat, and the distance between adjacent wetland units on the opposite side of the river is 2 times the width of the river flat;

[0036] 2) After step 1) is completed, the side length of the piled stones on the outside of the pile is 200 mm, and the total height of the piled stones on the outside of...

Embodiment 2

[0040] A method for constructing near-shore shoal wetlands for hard revetment channels, using the following steps to construct:

[0041] 1) On both sides of the river, log piles are selected at the position where the difference between the height of the silt and the height of the water surface is -0.1 m, so that the shape of the wetland unit enclosed by the wooden pile and the river bank is semi-elliptical, the length of the wetland unit is 8 m, and the area is 50 mm 2 , the maximum width of a wetland unit perpendicular to the river bank is 15% of the channel width, the distance between adjacent wetland units on the same side of the river bank is 6 times the width of the river flat, and the distance between adjacent wetland units on the opposite side of the river is 3 times the width of the river flat;

[0042] 2) After step 1) is completed, the side length of the piled stones on the outside of the pile is 300 mm, and the total height of the piled stones on the outside of the ...

Embodiment 3

[0046] A method for constructing near-shore shoal wetlands for hard revetment channels, using the following steps to construct:

[0047] 1) On both sides of the river, log piles are selected at the position where the difference between the height of the silt and the height of the water surface is +0.3 m, so that the shape of the wetland unit enclosed by the wooden pile and the river bank is wavy, etc. The length of the wetland unit is 7 m, and the area is 80 mm 2 , the maximum width of a wetland unit perpendicular to the river bank is not greater than 16% of the channel width, the distance between adjacent wetland units on the same side of the river bank is 7 times the width of the river flat, and the distance between adjacent wetland units on the opposite side of the river is 4 times the width of the river flat ;

[0048] 2) After step 1) is completed, the side length of the piled stones on the outside of the pile is 260 mm, and the total height of the piled stones on the ou...

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Abstract

The invention discloses a coastal shallow wetland construction method for hard landing river routes. The method comprises the steps that a site is selected on the two sides of a hard landing river route, poles are struck on the selected site, so that the pole and the river coast form a wetland unit, rock blocks are piled on one side of the river route near the struck poles, combined fillings are laid on the inner side of the bed body of the wetland unit, wetland plants are planted on the laid combined fillings, and the coastal shallow wetland is constructed. According to the construction method, the characteristics of large amount of microorganisms, dense biofilm, strong water treatment ability and strong adaptability of the combined fillings are utilized, an optimized combination of the wetland plants is adopted, the entrapment ability of the wetland to pollutants is strengthened, the purification effect of the nitrogen and phosphorus in water is increased, so that the overall biological system operates highly efficiently to finally form a stabilized and sustainably usable system, and the river water purification ability of the system is increased.

Description

technical field [0001] The invention relates to the field of ecological restoration of river channels, in particular to a method for constructing nearshore shoal wetlands for hard revetment river channels. Background technique [0002] Urban river slope protection is an important transition zone for the exchange of materials, energy and information between the water ecosystem and the terrestrial ecosystem. It can provide the main space for the survival and reproduction of various aquatic organisms, and at the same time, it can increase the source of animal and plant species and improve biodiversity. It has the functions of improving sex and ecosystem productivity, controlling soil erosion, stabilizing river banks, regulating microclimate and beautifying the environment. However, because people lack sufficient understanding of the health and balance of river ecosystems, water conservancy projects such as "cutting bends and straightening", "channelizing" and "hardening" have b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/18C02F3/32
CPCC02F3/327E02B3/18Y02A10/00Y02A20/402Y02W10/10
Inventor 丁露孙永军肖雪峰孙文全吴慧芳刘翠云夏霆吴燕霞郭莉莎贾正阳万志远
Owner NANJING UNIV OF TECH
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