Antifouling method for dredged mud in construction of water dredging engineering

A technology for engineering construction and anti-pollution, applied in the direction of river regulation, etc., can solve the problems of uneconomical, intensified diffusion, artificial laying of soil bags, etc., and achieve the effects of preventing secondary pollution, reducing impact force, and convenient operation

Active Publication Date: 2015-05-20
江苏省南京市航道管理处
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When a lot of sludge accumulates on lakes, offshore, and river beds, which affects water quality and waterways, it is necessary to dredge the sludge. The secondary pollution of polluted sediments or mud generated by water dredging projects will cause certain damage to the aquatic ecosystem. The impacts on the surrounding ecology mainly include: (1) During the dredging process, the disturbance and diffusion of the polluted sediment layer material intensified, and the suspended dredged matter produced caused a sharp increase in the suspended matter in the water in a short period of time, deteriorating the water quality
(2) During the dredging process, non-polluting organic suspended matter will damage the aquatic ecosystem
(3) The domestic sewage and oily sewage produced by construction ships during the dredging process will pollute the water environment
However, in water areas with a water depth of more than 2 meters, soil cofferdams can only be excavated in situ. During the excavation and filling process, mud diffusion pollution has already been caused. The top of the cofferdam needs to be continuously filled under the repeated erosion of waves. At the same time, the rise of the water level requires constant changes in the width and height of the soil cofferdam, which makes the filling cost of the soil cofferdam too high and uneconomical
The soil bag cofferdam can reduce the pollution of the water area during the filling process, but it has high requirements for the water depth. If the water depth exceeds 2 meters, it will require personnel to carry out diving operations. In addition, the construction of the soil bag requires a lot of manual laying. In the current high labor cost case, it is not economical

Method used

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  • Antifouling method for dredged mud in construction of water dredging engineering
  • Antifouling method for dredged mud in construction of water dredging engineering
  • Antifouling method for dredged mud in construction of water dredging engineering

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Embodiment 1

[0032] A water dredging construction mud throwing anti-fouling method, comprising the following steps:

[0033] (1), segmental processing color strip cloth unit, including: the length of each section of color strip cloth is 50m, the width is 6m, the positioning anchor rods are set at intervals of 3m on the color strip cloth, and the adjacent two positioning anchor rods are respectively arranged on the Both sides of the color strip cloth; the bottom end of the color strip cloth is firmly connected with the positioning anchor rod, and the top of the color strip cloth is loosely connected with the positioning anchor rod; 3 floating balls are tied every 1m at the top of the color strip cloth at a distance of 10cm, and the floating The ball is wrapped in a striped cloth;

[0034] (2) At a distance of 200-300m from the outlet of the mud pipe, insert the positioning anchor rod into the mud for 2-3m, so that the bottom of the color strip cloth is close to the mud surface, so that mult...

Embodiment 2

[0038] A water dredging construction mud throwing anti-fouling method, comprising the following steps:

[0039](1), segmental processing color strip cloth unit, including: the length of each section of color strip cloth is 50m, the width is 6m, the positioning anchor rods are set at intervals of 10m on the color strip cloth, and the adjacent two positioning anchor rods are respectively arranged on the Both sides of the color strip cloth; the bottom end of the color strip cloth is firmly connected with the positioning anchor rod, and the top of the color strip cloth is loosely connected with the positioning anchor rod; the foam board is wrapped every 1m at the top of the color strip cloth; every 1m at the bottom end of the color strip cloth package drop block;

[0040] (2) At a distance of 200-300m from the outlet of the mud pipe, insert the positioning anchor rod into the mud for 2-3m, so that the bottom of the color strip cloth is close to the mud surface, so that multiple co...

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Abstract

The invention discloses an antifouling method for dredged mud in construction of water dredging engineering. The method comprises the following steps: (1) sectionally processing colored strip units, wherein positioning anchor rods are arranged on each section of colored strip at intervals, two adjacent positioning anchor rods are respectively arranged on two sides of each colored strip, the bottom ends of the colored strips are tightly fastened and connected with the positioning anchor rods, the top ends of the colored strips are loosely connected with the positioning anchor rods, and floating devices are arranged between the top ends of the colored strips at intervals; (2) inserting the positioning anchor rods into mud at the position which is 200-300m far away from the opening of a mud discharge pipe, so that the plurality of colored strip units are overlapped in a staggered manner, so as to form a fence of a mud-dumping area, and the overlapping length of two adjacent colored strip units is 2-4m. The antifouling method disclosed by the invention is convenient to operate, the labor force is reduced, the top ends of the colored strips can automatically go up and down along with the water level change, the requirements can be met by once placement, the impact force of slurry can be effectively reduced, the slurry is prevented from overflowing, secondary pollution of surrounding water is prevented, and the pollution problem on a water district is not generated.

Description

technical field [0001] The invention relates to a mud throwing antifouling method for water dredging engineering construction, in particular to an antifouling method using a fence made of colored striped cloth. Background technique [0002] When a lot of sludge accumulates on lakes, offshore, and river beds, which affects water quality and waterways, it is necessary to dredge the sludge. The secondary pollution of polluted sediments or mud generated by water dredging projects will cause certain damage to the aquatic ecosystem. The impacts on the surrounding ecology mainly include: (1) During the dredging process, the disturbance and diffusion of the polluted bottom mud material intensified, and the suspended dredged matter produced caused a sharp increase in the suspended matter in the water in a short period of time, deteriorating the water quality. (2) During the dredging process, non-polluting organic suspended matter will damage the aquatic ecosystem. (3) Domestic sewag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B3/02
Inventor 施永富陈凤来童亮杨娟朱森林王青孔华南鲁宏战陆成学
Owner 江苏省南京市航道管理处
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