CN104141284B - Antifouling method for dredged mud in construction of water dredging engineering - Google Patents
Antifouling method for dredged mud in construction of water dredging engineering Download PDFInfo
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- CN104141284B CN104141284B CN201410398467.6A CN201410398467A CN104141284B CN 104141284 B CN104141284 B CN 104141284B CN 201410398467 A CN201410398467 A CN 201410398467A CN 104141284 B CN104141284 B CN 104141284B
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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
The present invention relates to a kind of Dredging Engineering waterborne and throw mud anti-fouling method, be specifically related to a kind of fence adopting colour bar cloth to make for antifouling method.
Background technology
When a lot of mud is piled up in lake, coastal waters, riverbed, when affecting water quality and navigation channel, need to dredge mud, the secondary pollution of the marine sediments that dredging works waterborne produces or mud causes certain destruction to aquatic ecosystem, impact ecological is around mainly contained: (1), dredge the material disturbance of polluted bed mud layer and diffusion aggravation in process, the suspension Dredged marerial produced causes suspended material in water sharply to increase in a short time, makes water quality deterioration.(2), dredge uncontamination organic suspended matter in process and destruction is produced to aquatic ecosystem.(3) sanitary sewage, the oil-polluted water of, dredging construction ship generation in process pollute water environment.Therefore, on the water in dredging works, the Dredged marerial that in dredged area, sediment deposit is dredged out is transferred to mud dumping area, avoids marine sediments or mud to pollute surrounding water, but the construction of mud dumping area cofferdam can acquire a certain degree of difficulty, and understand some mud and pass back into lake.
Existing cofferdam can be earth fill cofferdam, earth-bag cofferdam.But in the pool of the depth of water more than 2 meters, earth fill cofferdam can only excavate on the spot, excavate, fill the diffuse pollution just having caused mud in process, top, cofferdam is under the erosion repeatedly of wave, need constantly to fill up, the simultaneously rise of water level is to the width of earth fill cofferdam, requirement for height all in continuous change, and it is too high, uneconomical that this just causes earth fill cofferdam to fill cost.Earth-bag cofferdam can reduce the pollution of the process of filling to pool, but requires high to the depth of water, and the depth of water just needs personnel to carry out diving operation more than 2 meters, and the construction of earth bag needs a large amount of artificial layings in addition, when current price of labour service is high, also uneconomical.
Summary of the invention
The object of the present invention is to provide one easily Dredging Engineering waterborne throw mud anti-fouling method, the fence that colour bar cloth is made is used for the protection of dredging works mud dumping area waterborne by the method, can effectively stop mud excessive, prevent surrounding water secondary pollution.
The object of the invention is to be achieved through the following technical solutions:
A kind of Dredging Engineering waterborne throws mud anti-fouling method, comprises the following steps:
(1), segmental machining colour bar cloth unit, comprising: on every section of colour bar cloth, interval arranges positioning and anchoring bar, adjacent two positioning and anchoring bars are separately positioned on colour bar cloth both sides; Colour bar cloth bottom and positioning and anchoring bar are fastenedly connected, and colour bar cloth top is loosely connected with positioning and anchoring bar; Interval, colour bar cloth top arranges buoyant device;
(2), at the distance mud extraction mouth of pipe 200 ~ 300m place, inserted in mud by positioning and anchoring bar, multiple colour bar cloth unit is interlocked and overlaps the fence of formation to mud dumping area, wherein the lap length of adjacent two colour bar cloth unit is 2 ~ 4m.
In step (1), the length of the colour bar cloth of each colour bar cloth unit is 40 ~ 60m, is preferably 50m.The height of colour bar cloth is arranged according to hydrological data over the years and the water level in stage, to guarantee that the top of colour bar cloth exceeds the water surface.
Described colour bar cloth selects polyethylene colour bar cloth or polypropylene colour bar cloth, is preferably polyethylene colour bar cloth.Commercially available colour bar is covered with foot channel to intensity >=2100N/5CM, latitudinal strength >=1600N/5CM, water pressure resistance value >=2000MM water column, and intensity is large, for the fence of mud dumping area, can resist Lidar Equation, also can play waterproof action.
On every section of colour bar cloth, interval 3 ~ 25m arranges positioning and anchoring bar; Described positioning and anchoring bar is bamboo pole or steel pipe; The length of described positioning and anchoring bar is 12m; The diameter of described bamboo pole is 10 ~ 12cm, and the diameter of described steel pipe is 30 ~ 50mm.When bamboo pole selected by positioning and anchoring bar, preferred interval 3m arranges positioning and anchoring bar; When steel pipe selected by positioning and anchoring bar, the spacing of adjacent steel pipe suitably strengthens, and is preferably 10 ~ 25m.By nylon wire, colour bar cloth top loosely can be connected with positioning and anchoring bar; Also can by arranging connecting ring on colour bar cloth top, the internal diameter of connecting ring is greater than the diameter of positioning and anchoring bar, by connecting ring, colour bar cloth top is set in the loose connection of realization on positioning and anchoring bar; Loosely be connected by colour bar cloth top and positioning and anchoring bar and guarantee that colour bar cloth top can with the rise automatic lifting of water level.
On colour bar cloth top, interval 1 ~ 5m arranges buoyant device.Described buoyant device is one in ball float, cystosepiment or both combinations.Preferably, 3 ball floats or 3 blocks of cystosepiments are tied up every 1m at downward 8 ~ 12cm place, colour bar cloth top, and ball float or cystosepiment are wrapped in colour bar cloth, the buoyancy produced by ball float or cystosepiment guarantees to bubble through the water column in colour bar cloth top, can block the diffusion of mud.The diameter of described ball float is the polyethylene ball float of 8 ~ 12cm, diameter of bore 1.2 ~ 1.8cm.
During processing colour bar cloth unit, further pendant block is set at colour bar cloth bottom interval 1 ~ 5m, guarantees that mud face is close in colour bar cloth bottom, sewage can not be made to ooze out from bottom.More convenient in order to install, reduce pendant block pendant simultaneously and cause damage at bottom pulling colour bar cloth, be further wrapped in colour bar cloth by pendant block, adjacent pendant interblock is apart from being preferably 1m.Described pendant block preferentially selects concrete block.
In step (2), according to the situation in water-bed mud face, positioning and anchoring bar inserts 2 ~ 3m in mud, by positioning and anchoring bar, fence is fixedly positioning, can not tilt because of the impact of stormy waves, forgotten about it.The lap length of described adjacent two sections of colour bar cloth is preferably 3m.The positioning and anchoring bar of the overlap of adjacent colour bar cloth unit can tie further.
Another object of the present invention is to provide a kind of anti-pollution rail throwing mud for Dredging Engineering waterborne, this anti-pollution rail is formed by the staggered overlap joint of multiple colour bar cloth unit, described colour bar cloth unit comprises colour bar cloth, positioning and anchoring bar, buoyant device, on described colour bar cloth, interval arranges positioning and anchoring bar, and adjacent two positioning and anchoring bars are separately positioned on colour bar cloth both sides; Colour bar cloth bottom and positioning and anchoring bar bottom are fastenedly connected, and colour bar cloth top is loosely connected with positioning and anchoring bar; Interval, colour bar cloth top arranges buoyant device.Wherein, the lap length of adjacent two colour bar cloth unit is 2 ~ 4m, is preferably 3m.Preferred further, described interval, colour bar cloth bottom arranges pendant block.
The beneficial effect of the inventive method:
Anti-fouling method of the present invention is easy to operate, economical and practical, and it is antifouling that the Dredging Engineering waterborne being suitable for water field of big area throws mud, can effectively stop mud excessive, prevent surrounding water secondary pollution, and the discharge of top layer clear water after being conducive to suspension precipitation.
The colour bar cloth low price that the inventive method adopts, draw materials conveniently, intensity is high, can not produce pollution problem in use procedure to pool.
The inventive method employing segmentation colour bar cloth interlocks and overlaps, and according to the actual needs of job site, can increase or reduce colour bar cloth unit, laying, dismounting conveniently, decrease labour; In antifouling process, according to production requirement as fishing boat pass through time, directly can open at cohesive position, recover again after current, and fixed cofferdam reaches and cannot meet this generic request.
In the inventive method, colour bar cloth top is loosely connected with positioning and anchoring bar, can follow SEA LEVEL VARIATION automatic lifting, once lays and just can meet the demands.
Direction due to stormy waves per stage is not the same, therefore in the inventive method, adjacent positioned anchor rod is separately positioned on colour bar cloth both sides, alleviates the impact of both sides stormy waves on colour bar cloth.
The inventive method adopts segmental machining colour bar cloth to form fence to mud dumping area, can disperse fence stressing conditions, effectively prevent from, because Lidar Equation causes colour bar cloth integral inclined, guaranteeing that colour bar cloth can not be embedded under water by mud stretch bending in operation; And directly adopt whole piece colour bar cloth to form fence, then there is the defect that entirety is stressed, easily cause chain effect.
The inventive method is arranging fence at the distance mud extraction mouth of pipe 200 ~ 300m place, solves the too near part colour bar cloth of the colour bar cloth fence distance mud extraction mouth of pipe and is crushed on problem below mud scum, effectively can reduce the impact force of mud.
Accompanying drawing explanation
Fig. 1 is the anti-pollution rail schematic diagram be made up of multiple colour bar cloth unit in the inventive method.
Fig. 2 is the connection diagram of adjacent colour bar cloth unit under using state.
Fig. 3 is the structural representation of the colour bar cloth unit of embodiment 1.
Fig. 4 is the structural representation of the colour bar cloth unit of embodiment 2.
In figure, 1-fence, 2-colour bar cloth unit, 3-colour bar cloth, 4-positioning and anchoring bar, 5-ball float, 6-cystosepiment, 7-falls block.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
The inventive method is applied to stone mortar lake, the peaceful high new tunnel Qinhuaihe River section of relocating waterway regulation works, dredger does main in 3 ~ June, during this, the depth of water is lower than 6m, most earth is delivered to the mud dumping area outside the 100m of navigation channel nearby, lake region, stone mortar lake area 196 square kilometres, water velocity is more slow, but the change of water level is than very fast, there is large stretch of Culture pure seine and the fishing fishing net of fisherman in lake region, therefore need to stop the excessive of mud, marine sediments or mud is avoided to pollute surrounding water, also need to avoid part mud to pass back into lake, prevent surrounding water secondary pollution.Illustrated by following specific embodiment.
Embodiment 1
A kind of Dredging Engineering waterborne throws mud anti-fouling method, comprises the following steps:
(1), segmental machining colour bar cloth unit, comprising: the length of every section of colour bar cloth is 50m, width is 6m, and on colour bar cloth, interval 3m arranges positioning and anchoring bar, and adjacent two positioning and anchoring bars are separately positioned on colour bar cloth both sides; Colour bar cloth bottom is firmly connected with positioning and anchoring bar, and colour bar cloth top is loosely connected with positioning and anchoring bar; On colour bar cloth top, 3 ball floats are tied up every 1m by downward 10cm place, and are wrapped in by ball float in colour bar cloth;
(2), at the distance mud extraction mouth of pipe 200 ~ 300m place, positioning and anchoring bar is inserted 2 ~ 3m in mud, make colour bar cloth bottom be close to mud face, multiple colour bar cloth unit is interlocked and overlaps the fence of formation to mud dumping area, wherein the lap length of adjacent two colour bar cloth unit is 3m.
In the present embodiment method, described positioning and anchoring bar is length is 12m, diameter is the bamboo pole of 10 ~ 12cm.The polyethylene ball float of described ball float to be diameter be 10cm, diameter of bore 1.5cm.Colour bar cloth top is loosely connected with positioning and anchoring bar by nylon wire, guarantees that colour bar cloth top can with the rise automatic lifting of water level.
Adopt the present embodiment method can effectively stop mud excessive, prevent surrounding water secondary pollution.Simultaneously in antifouling process, the bamboo pole as positioning and anchoring does not tilt, fence not by mud stretch bending, fence can bear the impact of high sea, convenient and practical.
Embodiment 2
A kind of Dredging Engineering waterborne throws mud anti-fouling method, comprises the following steps:
(1), segmental machining colour bar cloth unit, comprising: the length of every section of colour bar cloth is 50m, width is 6m, and on colour bar cloth, interval 10m arranges positioning and anchoring bar, and adjacent two positioning and anchoring bars are separately positioned on colour bar cloth both sides; Colour bar cloth bottom is firmly connected with positioning and anchoring bar, and colour bar cloth top is loosely connected with positioning and anchoring bar; Cystosepiment is wrapped up every 1m on colour bar cloth top; In colour bar cloth bottom every 1m parcel pendant block;
(2), at the distance mud extraction mouth of pipe 200 ~ 300m place, positioning and anchoring bar is inserted 2 ~ 3m in mud, make colour bar cloth bottom be close to mud face, multiple colour bar cloth unit is interlocked and overlaps the fence of formation to mud dumping area, wherein the lap length of adjacent two colour bar cloth unit is 3m.
In the present embodiment method, described positioning and anchoring bar is length is 12m, diameter is the steel pipe of 40mm.Colour bar cloth top realizes loosely being connected by connecting ring and steel pipe, guarantees that colour bar cloth top can with the rise automatic lifting of water level.Described pendant block selects concrete block.
Adopt the present embodiment method can effectively stop mud excessive, prevent surrounding water secondary pollution.Simultaneously in antifouling process, the steel pipe as positioning and anchoring does not tilt, fence not by mud stretch bending, fence can bear the impact of high sea, convenient and practical.
Claims (9)
1. Dredging Engineering waterborne throws a mud anti-fouling method, it is characterized in that comprising the following steps:
(1), segmental machining colour bar cloth unit, comprising: on every section of colour bar cloth, interval arranges positioning and anchoring bar, adjacent two positioning and anchoring bars are separately positioned on colour bar cloth both sides; Colour bar cloth bottom and positioning and anchoring bar are fastenedly connected, and colour bar cloth top is loosely connected with positioning and anchoring bar; Interval, colour bar cloth top arranges buoyant device; In colour bar cloth bottom, interval 1 ~ 5m arranges pendant block, and described pendant block is wrapped in colour bar cloth;
(2), at the distance mud extraction mouth of pipe 200 ~ 300m place, inserted in mud by positioning and anchoring bar, multiple colour bar cloth unit is interlocked and overlaps the fence of formation to mud dumping area, wherein the lap length of adjacent two colour bar cloth unit is 2 ~ 4m.
2. Dredging Engineering waterborne according to claim 1 throws mud anti-fouling method, and it is characterized in that the length of the colour bar cloth of each colour bar cloth unit is 40 ~ 60m, on every section of colour bar cloth, interval 3 ~ 25m arranges positioning and anchoring bar.
3. Dredging Engineering waterborne according to claim 2 throws mud anti-fouling method, it is characterized in that the length of the colour bar cloth of each colour bar cloth unit is 50m.
4. Dredging Engineering waterborne according to claim 1 throws mud anti-fouling method, it is characterized in that described positioning and anchoring bar is bamboo pole or steel pipe; The diameter of described bamboo pole is 10 ~ 12cm, and the diameter of described steel pipe is 30 ~ 50mm.
5. Dredging Engineering waterborne according to claim 1 throws mud anti-fouling method, it is characterized in that arranging buoyant device at colour bar cloth top interval 1 ~ 5m; Described buoyant device is one in ball float, cystosepiment or both combinations.
6. Dredging Engineering waterborne according to claim 5 throws mud anti-fouling method, and it is characterized in that tying up 3 ball floats or 3 blocks of cystosepiments at downward 8 ~ 12cm place, colour bar cloth top every 1m, described ball float or cystosepiment are wrapped in colour bar cloth.
7. Dredging Engineering waterborne according to claim 1 throws mud anti-fouling method, it is characterized in that adjacent pendant interblock is apart from being 1m.
8. Dredging Engineering waterborne according to claim 1 throws mud anti-fouling method, it is characterized in that positioning and anchoring bar inserts 2 ~ 3m in mud.
9. Dredging Engineering waterborne according to claim 1 throws mud anti-fouling method, it is characterized in that the lap length of adjacent two sections of colour bar cloth is 3m.
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| CN201410398467.6A CN104141284B (en) | 2014-08-13 | 2014-08-13 | Antifouling method for dredged mud in construction of water dredging engineering |
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| CN201410398467.6A CN104141284B (en) | 2014-08-13 | 2014-08-13 | Antifouling method for dredged mud in construction of water dredging engineering |
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| CN104141284B true CN104141284B (en) | 2015-05-20 |
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| CN107268598B (en) * | 2017-06-28 | 2022-09-30 | 中交上海航道局有限公司 | Anti-pollution device for deep mixing ship |
| CN109403289B (en) * | 2018-08-31 | 2020-06-26 | 浙江省海洋水产研究所 | Method for reducing suspended matter diffusion in dredging engineering by using limiting device |
| CN109859606B (en) * | 2019-03-06 | 2021-05-07 | 水利部交通运输部国家能源局南京水利科学研究院 | Dredge boat mud cabin model |
| CN110485364A (en) * | 2019-08-25 | 2019-11-22 | 天津大学 | A kind of antifouling curtain suitable for river and lake environmental dredging engineering |
| CN115324088A (en) * | 2022-08-02 | 2022-11-11 | 中铁三局集团广东建设工程有限公司 | Cofferdam construction method |
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| JP2000096544A (en) * | 1998-09-21 | 2000-04-04 | Kihachiro Suzuki | Moving-type sludge outflow-preventing frame |
| CN2576793Y (en) * | 2002-10-16 | 2003-10-01 | 天津航道勘察设计研究院 | Device for preventing suspension from diffusing in dredging construction |
| CN101158149B (en) * | 2007-06-15 | 2010-05-19 | 中国科学院南京地理与湖泊研究所 | Full-enclosed type flexible deepwater enclosure |
| CN201280733Y (en) * | 2008-09-27 | 2009-07-29 | 中国港湾工程有限责任公司 | Mud-blocking curtain wall for scoop dredger construction |
| CN102518097B (en) * | 2011-11-11 | 2013-12-04 | 上海城投原水有限公司 | Sudden oil pollution pre-treatment system for large water intake port |
| CN203546688U (en) * | 2013-10-22 | 2014-04-16 | 中交天津港航勘察设计研究院有限公司 | Novel anti-pollution curtain applicable to dredging hydraulic reclamation engineering |
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