CN104141284A - 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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- CN104141284A CN104141284A CN201410398467.6A CN201410398467A CN104141284A CN 104141284 A CN104141284 A CN 104141284A CN 201410398467 A CN201410398467 A CN 201410398467A CN 104141284 A CN104141284 A CN 104141284A
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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 ofly adopt fence that colour bar cloth makes for antifouling method.
Background technology
When piling up a lot of mud on lake, coastal waters, riverbed, while affecting water quality and navigation channel, need to dredge mud, the marine sediments that dredging works waterborne produces or the secondary pollution of mud cause certain destruction to aquatic ecosystem, ecological around impact is mainly contained: (1), dredge the material disturbance of polluted bed mud layer and diffusion aggravation in process, the suspension dredging thing producing causes suspended material in water sharply to increase in a short time, makes water quality deterioration.(2), dredging uncontamination organic suspended matter in process produces and destroys aquatic ecosystem.(3), dredging sanitary sewage, the oil-polluted water that in process, construction ship produces pollutes water environment.Therefore, in dredging works, the dredging thing that in dredged area, sediment deposit is dredged is out transferred to mud dumping area on the water, avoids marine sediments or mud to pollute water body around, 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 exceed the pool of 2 meters in the depth of water, earth fill cofferdam can only excavate on the spot, excavate, fill the diffuse pollution that has just caused mud in process, top, cofferdam is under the erosion repeatedly of wave, need to constantly fill up, the width of the simultaneously rise of water level to earth fill cofferdam, requirement for height be all in continuous variation, 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 high to depth of water requirement, the depth of water exceedes 2 meters just needs personnel to carry out diving operation, and the construction of earth bag needs a large amount of artificial layings in addition, in the case of 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 the method is made colour bar cloth is for the protection of dredging works mud dumping area waterborne, can effectively stop mud excessive, prevent secondary pollution of water around.
The object of the invention is to be achieved through the following technical solutions:
A kind of Dredging Engineering waterborne is thrown 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), apart from the mud extraction mouth of pipe 200～300m place, positioning and anchoring bar is inserted in mud, make the staggered overlap joint in multiple colour bar cloth unit form the fence 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 arranges according to the water level in hydrological data over the years and stage, exceeds the water surface with the top of guaranteeing colour bar cloth.
Described colour bar cloth is selected 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 positioning and anchoring bar is selected bamboo pole, preferred interval 3m arranges positioning and anchoring bar; When positioning and anchoring bar is selected steel pipe, the spacing of adjacent steel pipe suitably strengthens, and is preferably 10～25m.Can colour bar cloth top be loosely connected with positioning and anchoring bar by nylon wire; Also can be by connecting ring being set 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 on positioning and anchoring bar and is realized loose connection; Loosely be connected and guarantee that colour bar cloth top can be with the rise automatic lifting of water level by colour bar cloth top and positioning and anchoring bar.
On colour bar cloth top, interval 1～5m arranges buoyant device.Described buoyant device is a kind of or both combinations in ball float, cystosepiment.Preferably, tie up 3 ball floats or 3 blocks of cystosepiments at downward 8～12cm place, colour bar cloth top every 1m, and ball float or cystosepiment are wrapped in colour bar cloth, the buoyancy producing by ball float or cystosepiment guarantees that colour bar cloth top bubbles through the water column, and 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.
Processing when colour bar cloth unit, further arranges pendant piece at colour bar cloth bottom interval 1～5m, guarantees that colour bar cloth bottom is close to mud face, can not make sewage ooze out from bottom.More convenient in order to install, reduce pendant piece pendant simultaneously and cause damage at bottom pulling colour bar cloth, further pendant piece is wrapped in colour bar cloth, adjacent pendant interblock is apart from being preferably 1m.Described pendant piece is preferentially selected concrete block.
In step (2), according to the situation of water-bed mud face, positioning and anchoring bar inserts 2～3m in mud, by positioning and anchoring bar, fence is fixedly positioning, and can not tilt, be forgotten about it because of the impact of stormy waves.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 further tie.
Another object of the present invention is to provide a kind of anti-pollution rail of throwing mud for Dredging Engineering waterborne, this anti-pollution rail is formed by the staggered overlap joint in 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.Further preferred, described interval, colour bar cloth bottom arranges pendant piece.
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 that is suitable for water field of big area is thrown mud, can effectively stop mud excessive, prevent secondary pollution of water around, and be conducive to the discharge of top layer clear water after suspension precipitation.
The colour bar cloth low price that the inventive method adopts, draws materials conveniently, and intensity is high, in use procedure, can not produce pollution problem to pool.
The inventive method adopts the staggered overlap joint of segmentation colour bar cloth, can be according to the actual needs of job site, increase or reduce colour bar cloth unit, and it is convenient to lay, remove, and has reduced labour; In antifouling process, when as current in fishing boat according to production requirement, can directly 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.
Because per stage of direction of stormy waves is not the same, therefore in the inventive method, adjacent positioned anchor rod is separately positioned on to colour bar cloth both sides, alleviate 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 because Lidar Equation causes colour bar cloth integral inclination, guarantees that colour bar cloth can be embedded under water by mud stretch bending in operating process; And directly adopt whole piece colour bar cloth to form fence, there is the defect that entirety is stressed, easily cause chain effect.
The inventive method is arranging fence apart from the mud extraction mouth of pipe 200～300m place, has solved colour bar cloth fence and has been crushed on the problem below mud scum apart from the too near part colour bar cloth of the mud extraction mouth of pipe, can effectively reduce the impact force of mud.
Brief description of the drawings
Fig. 1 is by the anti-pollution rail schematic diagram of multiple colour bar cloth cell formations in the inventive method.
Fig. 2 is the connection diagram of adjacent colour bar cloth unit under use 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 piece.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, 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 mainly 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, 196 square kilometres of lake region, stone mortar lake areas, water velocity is more slow, but the variation of water level is than very fast, there is large stretch of Culture pure seine and fisherman's fishing fishing net in lake region, therefore need to stop the excessive of mud, avoid marine sediments or mud to pollute water body around, also need to avoid part mud to pass back into lake, prevent secondary pollution of water around.Illustrate by following specific embodiment.
Embodiment 1
A kind of Dredging Engineering waterborne is thrown 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 that 50m, width are 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 ball float is wrapped in colour bar cloth;
(2), apart from the mud extraction mouth of pipe 200～300m place, positioning and anchoring bar is inserted to 2～3m in mud, make colour bar cloth bottom be close to mud face, make the staggered overlap joint in multiple colour bar cloth unit form the fence 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 that length is the bamboo pole that 12m, diameter are 10～12cm.Described ball float is that diameter is the polyethylene ball float of 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 be with the rise automatic lifting of water level.
Adopt the present embodiment method can effectively stop mud excessive, prevent secondary pollution of water around.Simultaneously in antifouling process, the bamboo pole of using as positioning and anchoring does not tilt, fence is by mud stretch bending, and fence can bear the impact of high sea, convenient and practical.
Embodiment 2
A kind of Dredging Engineering waterborne is thrown 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 that 50m, width are 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; Wrap up cystosepiment on colour bar cloth top every 1m; Fall piece in colour bar cloth bottom every 1m parcel;
(2), apart from the mud extraction mouth of pipe 200～300m place, positioning and anchoring bar is inserted to 2～3m in mud, make colour bar cloth bottom be close to mud face, make the staggered overlap joint in multiple colour bar cloth unit form the fence 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 that length is the steel pipe that 12m, diameter are 40mm.Colour bar cloth top is realized and being loosely connected with steel pipe by connecting ring, guarantees that colour bar cloth top can be with the rise automatic lifting of water level.Described pendant piece is selected concrete block.
Adopt the present embodiment method can effectively stop mud excessive, prevent secondary pollution of water around.Simultaneously in antifouling process, the steel pipe of using as positioning and anchoring does not tilt, fence is by mud stretch bending, and fence can bear the impact of high sea, convenient and practical.
Claims (10)
1. Dredging Engineering waterborne is thrown 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;
(2), apart from the mud extraction mouth of pipe 200～300m place, positioning and anchoring bar is inserted in mud, make the staggered overlap joint in multiple colour bar cloth unit form the fence 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 is thrown mud anti-fouling method, it is characterized in that the length of the colour bar cloth of each colour bar cloth unit is 40～60m, and on every section of colour bar cloth, interval 3～25m arranges positioning and anchoring bar.
3. Dredging Engineering waterborne according to claim 2 is thrown 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 is thrown 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 is thrown mud anti-fouling method, it is characterized in that, at colour bar cloth top interval 1～5m, buoyant device is set; Described buoyant device is a kind of or both combinations in ball float, cystosepiment.
6. Dredging Engineering waterborne according to claim 5 is thrown mud anti-fouling method, 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, and described ball float or cystosepiment are wrapped in colour bar cloth.
7. Dredging Engineering waterborne according to claim 1 is thrown mud anti-fouling method, it is characterized in that, at colour bar cloth bottom interval 1～5m, pendant piece is set.
8. Dredging Engineering waterborne according to claim 7 is thrown mud anti-fouling method, it is characterized in that described pendant piece is wrapped in colour bar cloth, and adjacent pendant interblock distance is 1m.
9. Dredging Engineering waterborne according to claim 1 is thrown mud anti-fouling method, it is characterized in that positioning and anchoring bar inserts 2～3m in mud.
10. Dredging Engineering waterborne according to claim 1 is thrown mud anti-fouling method, and the lap length that it is characterized in that 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 CN104141284B (en) | 2015-05-20 |
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Cited By (5)
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| CN107268598A (en) * | 2017-06-28 | 2017-10-20 | 中交上海航道局有限公司 | A kind of environmental control system for deep-layer stirring ship |
| CN109403289A (en) * | 2018-08-31 | 2019-03-01 | 浙江省海洋水产研究所 | A method of suspended matter diffusion in dredging work is reduced using device is limited |
| CN109859606A (en) * | 2019-03-06 | 2019-06-07 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of dredger ship spoil hopper 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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| Publication number | Priority date | Publication date | Assignee | Title |
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