CN104452656B - A kind of river course segmentation Dredging Construction method - Google Patents
A kind of river course segmentation Dredging Construction method Download PDFInfo
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- CN104452656B CN104452656B CN201410689295.8A CN201410689295A CN104452656B CN 104452656 B CN104452656 B CN 104452656B CN 201410689295 A CN201410689295 A CN 201410689295A CN 104452656 B CN104452656 B CN 104452656B
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- mud
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
Abstract
A kind of method that the invention discloses river course segmentation Dredging Construction, belong to river regulation technical field, it is by carrying out segmentation to river course, carry out respectively building flexible dam, at the long-pending mud groove of dam body front excavation, the water flow impact pressure after head difference and sluice discharge water after building a dam is utilized to carry out the process of bottom of river channel mud.Segmentation Dredging Construction method in river course of the present invention uses self-floating dam structure form, can change and automatic lifting according to river water level, then carry out segment processing, be beneficial to improve the sedimentary condition of mud；Drainage gate coordinates segmentation to amass the use of silt ditch, improves long-pending silt efficiency, be arranged over netted cover plate at long-pending silt ditch while draining, is used for blocking foreign material and protection personal security；By adding inorganic composite type medicament mud carried out harmless treatment, it is to avoid the soil body causes the secondary pollution of environment during recycling；Accelerate the discharging consolidation of mud, improve the treatment effeciency of mud.
Description
Technical field
The invention belongs to river regulation technical field, be specifically related to a kind of river course segmentation Dredging Construction method.
Background technology
China's water environment is faced with many-sided pressure such as water pollution, shortage of water resources and flood.Water pollution exacerbates shortage of water resources, and water ecological environment destroys and promotes flood to take place frequently.During the pollution of water body mostlys come from human social development, cause including industry, agricultural, life various aspects produced pollution thing, the pollution of water body to be solved, to be on the one hand controlled pollution from source, on the other hand seeks to carry out the exploitation of pollution clean-up technology.Water pollution be mainly reflected in river pollution, the river of pollution not only loses resource function and use value, and the environmental landscape around heavy damage, even jeopardizes the health of river resident.River pollution mainly due to substantial amounts of pollutant through accumulation year in year out, precipitate and accumulate in bed mud, absorption pollutant in sediment particles exchanges with pore water, thus outwards discharge pollutant, cause the secondary pollution of water body, and substantial amounts of bed mud is the hotbed that microorganism provides breeding, exacerbate the pollution in river.Therefore, during the regulation in river course, the cleaning of bed mud is extremely important.
If channel cleanout uses, traditional hydraulic engineering technology and equipment power consumption is high, efficiency is low, construction is slow, and therefore people are constantly developing various effective, practical, workable river course Removal Technology.Prior art has following method: 1) by subsection setup zanjon with construct the technology that river bottom mud is regularly cleared up by rubber dam, but rubber dam is difficult to construct, belong to fixed point engineering, whole river course can not be carried out desilting work, mud is only by simple air-drying process, the process time is longer, the pollutant in mud is not carried out harmless treatment, is easily caused the secondary pollution in periphery place during use；2) by arranging Drain contamination for river channel pipe, earth dam is constructed in segmentation, clears up pollutant method, the method constructional difficulties, operation inconvenience, processes the time long, it is impossible to ensure its validity processed and persistence；3) utilize supercharging device (large pump) that river bottom mud is rinsed in upstream, river course, change the physical arrangement of low-quality, utilize nethike embrane filtration method to be discharged by tiny mud in downstream, river course simultaneously, leach white garbage plastics and big contaminated sediment, modified and Resource recoveryization utilizes, the method needs subsection setup supercharging device, and need to work long hours, do not set special mud collection system, process time and costly, process for mud is inconspicuous, and the change to water ecology is helpful；4) method that plant equipment carries out riverway sludge cleaning is used, although it is these method simple in construction, easy to operate, but it in use keeps in repair higher with cost of upkeep, owing to plant equipment itself is the hugest, may be only available for roomy and deep river course, for shallower and narrow river inapplicable.
Summary of the invention
Goal of the invention: it is an object of the invention to provide a kind of river course segmentation Dredging Construction method, improves validity and the flexibility of channel cleanout, and the method is the most simple and practical, and construction is flexibly, with low cost, and workable.
Technical scheme: for achieving the above object, the present invention adopts the following technical scheme that
A kind of method of river course segmentation Dredging Construction, comprises the following steps:
1) carrying out river survey, segmentation, every segment distance is 800 ~ 1000m；
2) the long-pending silt ditch of excavation at segmentation, the degree of depth of long-pending silt ditch is 1.5 ~ 2.5m, and the end face at long-pending silt ditch is installed for blocking foreign material and the netted cover plate of protection personal security；
3) construct respectively in two sides, river course for the drainage gate sluiced；
4) building flexible dam between the drainage gate of two sides, river course, flexible dam can be with river automatic lifting, and the maximum height of automatic lifting is equal to the extreme high water in river；
5) building sludge treatment pond on bank, river course, be provided with drainpipe bottom sludge treatment pond, wrap up geomembrane outside drainpipe, drainpipe is internally formed loop in sludge treatment pond；
6) periodically carrying out discharging water of drainage gate, downstream mud flows under water impact effect, deposits in the long-pending silt ditch in another segmentation of downstream；
7) periodically carry out the collection of mud in long-pending silt ditch, and enter in sludge treatment pond；
8) in sludge treatment pond, admix inorganic composite type medicament and carry out silt harmless process；
9) moisture in mud is discharged by drainpipe from its surface and underdrain hole shining upon under gravity double action respectively, when mud water content is less than 40%, mud is transported out sludge treatment pond, uses as recyclable resource；
10) step 7) ~ 9 are repeated), until the mud of whole section has been cleared up.
In step 3), described drainage gate top exceeds flood level height 1m, exceeds 0.5m bottom riverbed bottom the drain outlet of drainage gate.
In step 4), described flexible dam is self-floating type flexible dam, and bottom it and both sides are connected with ground and drainage gate by anchor pole and press strip, and top is attached by the ground of steel wire rope with dam body front；It is provided with vertical fence in dam body front.
In step 5), the volume in described sludge treatment pond is at 50 ~ 100m3, the degree of depth is 2 ~ 3m.
Beneficial effect: compared with prior art, segmentation Dredging Construction method in river course of the present invention has the advantage that
1) flexible dam construction method is simple, quick detachable, and uses self-floating dam structure form, can change and automatic lifting according to river water level, then carry out segment processing, be beneficial to improve the sedimentary condition of mud；
2) drainage gate coordinates segmentation to amass the use of silt ditch, improves long-pending silt efficiency, be arranged over netted cover plate at long-pending silt ditch while draining, is used for blocking foreign material and protection personal security；
3) mud carried out harmless treatment by adding inorganic composite type medicament, it is to avoid the soil body causes the secondary pollution of environment during recycling；
4) it is provided with the drainpipe of crisscross connection bottom sludge treatment pond, outside drainpipe, wraps up geomembrane, in conjunction with shining upon, accelerate the discharging consolidation of mud, improve the treatment effeciency of mud.
Accompanying drawing explanation
Fig. 1 is river course plane；
Fig. 2 is the river course profile of ordinary water level state；
Fig. 3 is sludge treatment pond profile；
Fig. 4 is the part sectioned view of drainpipe.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described further.
As shown in Fig. 1 ~ 4, prepare, in the river course of desilting, to be provided with vertical fence 9 in the upstream of flexible dam 1, drainage gate 5 is arranged on the both sides of flexible dam 1, be provided with long-pending silt ditch 3 in the upstream of flexible dam 1, nerve of a covering shape cover plate 4 on long-pending silt ditch 3, mud 2 falls in long-pending silt ditch 3 through netted cover plate 4.Flexible dam 1 is further equipped with sludge treatment pond 6, is provided with drainpipe 7 in sludge treatment pond 6, wraps up geomembrane 8 in the outside of drainpipe 7, is provided with the gully-hole 10 for discharging mud 2 moisture in the bottom in sludge treatment pond 6.
The method of river course segmentation Dredging Construction, comprises the following steps:
1) carrying out river survey, segmentation, every segment distance is 800 ~ 1000m；
2) the long-pending silt ditch 3 of excavation at segmentation, the degree of depth of long-pending silt ditch 3 is 1.5 ~ 2.5m, and the end face at long-pending silt ditch 3 is installed for blocking foreign material and the netted cover plate 4 of protection personal security；
3) constructing respectively in two sides, river course for the drainage gate 5 sluiced, drainage gate 5 top exceeds flood level height 1m, exceeds 0.5m bottom riverbed bottom drain outlet；
4) building flexible dam 1 between the drainage gate 5 of two sides, river course, flexible dam 1 can change and automatic lifting according to river water level, and the maximum height of automatic lifting is equal to the extreme high water in river；
5) building sludge treatment pond 6 on bank, river course, be provided with crisscross connection drainpipe 7 bottom sludge treatment pond 6, wrap up geomembrane 8 outside drainpipe 7, drainpipe 7 is internally formed loop in sludge treatment pond 6；The volume in sludge treatment pond 6 is at 50 ~ 100m3, the degree of depth 2 ~ 3m；
6) periodically carrying out discharging water of drainage gate 5, downstream mud 2 flows under water impact effect, deposits in the long-pending silt ditch 3 in another segmentation of downstream；
7) periodically carry out the collection of mud 2 in long-pending silt ditch 3, and enter in sludge treatment pond 6；
8) in sludge treatment pond 6, admix inorganic composite type medicament and carry out mud 2 harmless treatment；
9) moisture in mud 2 is discharged by drainpipe 7 from its surface and underdrain hole 10 shining upon under gravity double action respectively, when mud 2 water content is less than 40%, mud 2 is transported out sludge treatment pond 6, uses as recyclable resource；
10) step 7 ~ 9 are repeated, until the mud 2 of whole section has been cleared up.
Wherein, in step 4), flexible dam 1 is self-floating type flexible dam, and bottom it and both sides are connected with ground and drainage gate 5 by anchor pole and press strip, and top is attached by the ground of steel wire rope with dam body front；Vertical fence 9 it is provided with in dam body front.
Claims (3)
1. the method for a river course segmentation Dredging Construction, it is characterised in that comprise the following steps:
1) carrying out river survey, segmentation, every segment distance is 800～1000m；
2) the long-pending silt ditch (3) of excavation at segmentation, the degree of depth of long-pending silt ditch (3) is 1.5～2.5m, long-pending silt ditch (3)
End face install for block foreign material and protection personal security netted cover plate (4)；
3) construct respectively in two sides, river course for the drainage gate (5) sluiced；
4) building flexible dam (1) between the drainage gate (5) of two sides, river course, flexible dam (1) can be with river
Automatic lifting, the maximum height of automatic lifting is equal to the extreme high water in river；
5) build sludge treatment pond (6) on bank, river course, be provided with drainpipe (7) in sludge treatment pond (6) bottom,
At drainpipe (7) outside parcel geomembrane (8), drainpipe (7) is internally formed in sludge treatment pond (6)
Loop；
6) periodically carrying out discharging water of drainage gate (5), downstream mud (2) flows under water impact effect
Dynamic, deposit in the long-pending silt ditch (3) in another segmentation of downstream；
7) periodically carry out the collection of long-pending silt ditch (3) interior mud (2), and enter in sludge treatment pond (6)；
8) in sludge treatment pond (6), admix inorganic composite type medicament and carry out mud (2) harmless treatment；
9) moisture in mud (2) shine upon with gravity double action under respectively from its surface and bottom collection
Water hole (10) is discharged by drainpipe (7), when mud (2) water content is less than 40%, by mud (2)
It is transported out sludge treatment pond (6), uses as recyclable resource；
10) step 7 is repeated)～9), until the mud of whole section (2) has been cleared up；Step 3) in,
Described drainage gate (5) top exceeds flood level height 1m, exceeds bottom the drain outlet of drainage gate (5)
0.5m bottom riverbed.
The method of segmentation Dredging Construction in river course the most according to claim 1, it is characterised in that: step 4)
In, described flexible dam (1) is self-floating type flexible dam, and bottom it and both sides are by anchor pole and press strip and ground
Connecting with drainage gate (5), top is attached by the ground of steel wire rope with dam body front；In dam body front
It is provided with vertical fence (9).
The method of segmentation Dredging Construction in river course the most according to claim 1, it is characterised in that: step 5)
In, the volume in described sludge treatment pond (6) is 50～100m3, the degree of depth is 2～3m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410689295.8A CN104452656B (en) | 2014-11-26 | 2014-11-26 | A kind of river course segmentation Dredging Construction method |
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| CN201410689295.8A CN104452656B (en) | 2014-11-26 | 2014-11-26 | A kind of river course segmentation Dredging Construction method |
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| CN104452656B true CN104452656B (en) | 2016-08-24 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105421288A (en) * | 2015-11-20 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | Large reservoir basin reservoir silt beach sand sluicing structure and construction method thereof |
| CN105862656B (en) * | 2016-04-27 | 2017-09-29 | 南通大学 | A kind of method suitable for river network in plain areas water and soil conservation |
| CN109111065B (en) * | 2018-08-07 | 2021-07-16 | 上海久树环境科技有限公司 | Riverbed ecological comprehensive restoration method |
| CN109024749B (en) * | 2018-09-20 | 2023-08-08 | 苏州希克曼物联技术有限公司 | Drop flushing type river bottom mud force medium and small flushing dredging device and dredging method thereof |
| CN110485378B (en) * | 2019-07-23 | 2020-07-31 | 中国科学院南京地理与湖泊研究所 | Two-stage river water impoundment system |
| CN110528612A (en) * | 2019-08-27 | 2019-12-03 | 中国建筑一局(集团)有限公司 | Urban Underground underground river desilting system and the engineering method desilted and dredged with the system |
| CN112523160A (en) * | 2020-08-31 | 2021-03-19 | 济南金宇公路产业发展有限公司 | River water ecological management method |
| CN112482299A (en) * | 2020-10-19 | 2021-03-12 | 广州建筑股份有限公司 | Construction method based on water system area field transformation |
| CN112391994A (en) * | 2020-11-25 | 2021-02-23 | 中铁北京工程局集团有限公司 | Construction process for mechanically removing floating mud in lake area |
| CN113233723A (en) * | 2021-05-11 | 2021-08-10 | 中国水利水电第五工程局有限公司 | Dredging method capable of improving dredging effect of river channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005030070A (en) * | 2003-07-14 | 2005-02-03 | Ohbayashi Corp | Flowing-down promoting dam structure and flowing-down promoting method of deposit sediment in dam water reservoir |
| CN101967821B (en) * | 2010-10-19 | 2012-02-22 | 上海交通大学 | Dredged sediment dewatering and drying stockyard and establishment method thereof |
| CN102877497A (en) * | 2012-08-02 | 2013-01-16 | 上海市离心机械研究所有限公司 | River channel desilting method |
| CN203346870U (en) * | 2013-07-03 | 2013-12-18 | 中交天津港航勘察设计研究院有限公司 | Drainage device of dredging hydraulic fill storage yards of high-organic-content rivers and lakes |
| CN103669281B (en) * | 2013-12-16 | 2015-06-10 | 重庆大学 | Method for assisting in fixed-point dredging of black and odorous watercourse through rubber dams |
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