CN105155463B - A kind of river course or the ecological dredging processing method in lake - Google Patents
A kind of river course or the ecological dredging processing method in lake Download PDFInfo
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- CN105155463B CN105155463B CN201510507326.8A CN201510507326A CN105155463B CN 105155463 B CN105155463 B CN 105155463B CN 201510507326 A CN201510507326 A CN 201510507326A CN 105155463 B CN105155463 B CN 105155463B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
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Abstract
The invention discloses the ecological dredging processing method in a kind of river course or lake, including：（1）Bed mud excavates and drying and other treatment；（2）Riverbed after dredging bed mud is up sequentially provided with supporting layer, transition zone, conversion zone, safe coatings, form potamobenthos film recovery system；（3）Riverbank and river levee are carried out with process and forms ecological shore protection system.Under the present invention background that bed mud is contaminated in river course aquatic ecosystem, the Ecological Restoration Project that application and development ecological theory is implemented, its essence is that " Ecological niche " of the sustainable development to solve river course and lake with engineering, environment, ecologic facies combination is repaired.
Description
Technical field
The invention belongs to field is administered with lake pollution in river, refer to further at a kind of river course or the ecological dredging in lake
Reason method.
Background technology
River course is the important carrier that civilization continues with economic development, is the important component part of harmony between man and nature coexistence,
It is also one of mark of city quality.In recent years, with China's economic liftoff, urbanization paces are accelerated, and cities and towns blowdown flow rate increases,
Many town rivers are heavily contaminated, black smelly outstanding problem.
River course with the primary pollution source in lake is：1. sanitary sewage；2. rainwash；3. house refuse；4. pollution form construction；
5. polluted bed mud.It is embodied in：Littoral sanitary sewage is seriously omitted in printing, and part of contaminated water directly enters river；River water poor fluidity,
Water quality deterioration；Embankment population hardening, lacks ecological；It is high that house refuse enters river rate；Building waste water, waste material enter river；Ecosystem
System degeneration etc..
Due to above-mentioned environmental problem, river and the bed mud in lake is caused to deposit seriously.Due to bed mud and river composition
It is the balanced body of a two-phase, pollutant between interact, affect；If pollution concentration is too high in bed mud, certainly will
Cause the pollutant in bed mud can discharge, affect water quality.
Especially some river alongshores have the area of industry park, its mainly pollute for organic matter, TP, TN, Cu, Pb, Zn,
Cd, Cr etc..
Alluvial deposits that river and bottom mud in lake bring essentially from river around and soil erosion and industrialization in recent years and
The pollutant producing in Development of China's Urbanization, knowable to some sampling sample analysis results, the superiors are by the activity of people in recent years
The sediment layer affecting and producing, the time due to being formed is shorter, and moisture content is higher, and density and hardness is relatively small.Sediment layer is
One layer of density, the hardness being formed through deposition for many years in river bed by the silt in river and lake, polluter and some impurity
Relatively large sediment layer.The bed mud that cleaning is processed at present is not processed substantially, usually directly stacks, or directly fills out
Bury process, secondary pollution is caused to environment.
One of river course and major measure of Water Environment In Lakes comprehensive improvement are exactly that river course is dredged with bottom mud in lake, river
Road plays positive effect with lake dredging during river course with lake treatment.At present, the dredging side to river course and lake
Method include draining pool manually dredge, not drainage machinery dredging, slush pump hydraulicking unit does pool dredging, Jet Dredging is dredged
Ship dredging, air-powered pump desilting etc..Although these methods play positive effect in terms of river course with lake pollution regulation, for
When dredging amount is larger, a large amount of plant equipment need to be put into manually, construction intensity and labor strength are big, and management is inconvenient, in fact
Apply difficulty big.And above-mentioned dredging method is merely resting in the aspect of traditional common engineering dredging, does not examine
Consider and combine the sustainable development to solve river course and water body in lake or claim the reparation of " Ecological niche " to ask with engineering, environment, ecologic facies
Topic.
Related names are explained：Plant cover concrete refers to can adapt to green plantss growth and have certain safeguard function
Concrete and its product.
Ecotypic Stone Mesh-box is to be widely used in traffic, water conservancy, municipal administration, gardens in recent years, in the engineering project such as water and soil conservation
A kind of new material structure.Ecotypic Stone Mesh-box is made according to different requirements by ecological grid.
Ecological grid is by the high zinc-coated wire of low-carbon (LC) high-strength for corrosion-resisting wear-proof or 5% aluminum-zinc rare earth alloy coating wire（Or
Homogeneity coated polymer steel wire）, it is woven into the mesh sheet of five hinge shapes, hexagon mesh, the length of its two-wire hinge portions by machinery
5cm should be not less than, not destroy the protective coating of steel wire.Ecological grid can be assembled into boxes and baskets according to engineering design requirements, and fills
Link into an integrated entity after entering the inserts such as block stone, be used as the new technique of the engineerings such as dyke, subgrade protection.
Content of the invention
For the deficiencies in the prior art, the present invention provides a kind of ecological dredging process side distinguishing with Traditional project dredging
Method, it is under the background that bed mud is contaminated in river course aquatic ecosystem, the restoration of the ecosystem that application and development ecological theory is implemented
Engineering, its essence is to be solved " Ecological niche " of the sustainable development in river course and lake and to be repaiied with engineering, environment, ecologic facies combination
Multiple.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of river course or the ecological dredging processing method in lake, including the process to bed mud, riverbed and river levee riverbank, have
Body comprises the following steps：
（1）With interim dam, river course is separated into multiple cofferdam, the bed mud in cofferdam is dug out, add modified in bed mud
Agent is modified, removes the heavy metal ion in bed mud, is then transported to after bed mud stacking drying bed carries out drying and other treatment and recycles；Institute
State bed mud and stack drying bed surrounding and be provided with and enclose low bank between fields, described low bank between fields medial wall of enclosing is provided with anti-seepage geomembrane, and described bed mud stacks mummification
Field is up sequentially provided with french drain impervious barrier, french drain, mud mattress layer, mud bed filter layer and the bed mud for stacking bed mud from bottom
Store up layer, in described french drain, be provided with leachate collection pipe；
（2）Riverbed after dredging bed mud is up sequentially provided with supporting layer, transition zone, conversion zone, safe coatings, form
Potamobenthos film recovery system；
（3）It is provided with staged Ecotypic Stone Mesh-box in the bottom of river levee, described staged Ecotypic Stone Mesh-box surface is earth backing layer, described
Bank slope face is provided with eco-concrete layer, and the bottom of described eco-concrete layer is connected with described staged Ecotypic Stone Mesh-box；
It is emergent aquactic plant vegetable layer on described earth backing layer and described eco-concrete layer, shield is planted in the dike face Shang Youdi face of described river levee
Layer, forms ecological shore protection system.
Emergent aquactic plant Rhizoma Acori Graminei is preferably planted on gabion earth backing layer and eco-concrete, Lagerstroemia indica L. is preferably planted in dike face.
Step（1）Described modifying agent is preferably flyash, and the consumption of described flyash is preferably the 0.08- of bed mud quality
0.12 times.Flyash contains the nutrient of the crops needs such as substantial amounts of soluble silicon, calcium, magnesium, phosphorus；In addition, flyash contains
There is Al2O3, CaO isoreactivity material, can remove in river bottom mud containing heavy metal ion.
Step（1）Described anti-seepage geomembrane is preferably polypropylene anti-seepage geomembrane.
Step（1）The described french drain preferably rubble of interior filling 30 ~ 50mm, described french drain cross section is trapezoidal, upper width
More than lower width.
Step（1）The preferred both sides of described leachate collection pipe interlock perforate, and pitch-row is 100mm-150 mm, and aperture is 15
mm -20 mm.
Step（1）Described mud mattress layer is preferably the gravel layer in 4 ~ 8mm for the particle diameter, the thickness 200mm- of described mud mattress layer
300mm.
Step（1）Described mud bed filter layer is preferably quartz sand layer between 1 ~ 2mm for the particle diameter, described mud bed filter layer
Thickness is 250mm-350mm.
Step（1）Described leachate collection pipe is preferably connected with sedimentation tank.It is easy to the filtrate of collection is sunk further
Shallow lake recycles after processing.
Step（2）Described supporting layer is preferably gravel between 8mm ~ 16mm for the particle diameter, and the thickness of described supporting layer is
100mm-200 mm.
Step（2）Described transition zone is preferably gravel between 4mm ~ 8mm for the particle diameter, and the thickness of described transition zone is
100mm-200 mm.
Step（2）Described conversion zone is preferably cobble between 2 ~ 4mm for the particle diameter, and the thickness of described conversion zone is 100mm-
200 mm.
Step（2）Described safe coatings are preferably quartz sand layer between 0.9mm ~ 1.5mm for the particle diameter, and described safety is covered
The thickness of cap rock is 100mm-200 mm.
Step（3）Described staged Ecotypic Stone Mesh-box preferably height is 400mm -500mm, and width is 400mm -500mm, long
Spend for 2000mm-2500mm, cylinder mould aperture is the block stone with diameter greater than 80mm for the filling in 60 mm ~ 80mm, cylinder mould.
Compared with prior art, the innovation of the present invention is：
1st, the ecological dredging processing method in the river course of the present invention or lake, using engineering measure, by the dredging of bed mud
Outside possibly the pollutant storing up in this layer being removed water body greatly, remove the endogenous of polluted-water, reduce pollutants in sediments
Release to water body；Using Ecological Measures, to improve water zoology cycle, the degeneration of containment stability of river channel, and it is Aquatic Ecosystem 2
The recovery of system creates conditions.
The bed mud dredged is modified with the method adding flyash, and modified bed mud can be used for the base manure in forest land and chases after
Fertilizer, is not only provided that the nutrient required for arboreal growth, improves forest production, and can be increase soil fertility with improved soil,
Accomplish forest land resource.
Described bed mud is stacked drying bed and bed mud can be stacked at bed mud and store up layer and carries out nature mummification dehydration, preferably will add
Plus the bed mud after modifying agent stores up layer in bed mud and carry out nature mummification dehydration, so process bed mud and do not result in secondary pollution.
2nd, the present invention adopts Ecological Measures, to improve water zoology cycle, the degeneration of containment stability of river channel, and is Ecology
The recovery of system creates conditions.Eco-concrete on described riverbank can grow small-sized straw or like vegetable, and can grow large-scale algae
Class, provides more vivospheries for microorganism, meiofauna simultaneously.
3rd, described be up sequentially provided with supporting layer, transition zone, conversion zone, safe coatings from riverbed, form potamobenthos
The recovery of film, in addition to the function that safety covers, also can be produced contact precipitation, absorption and oxygenolysiss to reasonable, be come with this
Improve water quality, repair the ecological environment of water body.
Brief description
Fig. 1 dredges annexation schematic diagram for the present invention's；
Fig. 2 is the sectional schematic diagram of the bed mud stacking drying bed of the present invention；
Fig. 3 is the sectional schematic diagram of the ecological shore protection system of the present invention；
Fig. 4 is the sectional schematic diagram of the potamobenthos film recovery system of the present invention；
In in figure
The interim dam of 1-；2- cofferdam；3- Veritical mud pump；4- excavator；5- forklift；6 belt conveyors；7- batch charger；
8- dump truck；9- bed mud stacks drying bed；9-1- encloses low bank between fields；9-2- anti-seepage geomembrane；9-3- french drain impervious barrier；9-4- french drain；
9-5- leachate collection pipe；9-6- mud mattress layer；9-7- mud bed filter layer；9-8- bed mud stacks layer；10- sedimentation tank；11- is ecological
Shore protection system；11-1- staged Ecotypic Stone Mesh-box；11-2- eco-concrete；11-3- earth backing layer；11-4- emergent aquactic plant layer；11-
Sheath is planted in 5- dike face；12- potamobenthos film recovery system；12-1- supporting layer；12-2- transition zone；12-3- conversion zone；12-4-
Safe coatings.
Specific embodiments
With reference to example, the present invention is described further
In order to be better understood from the present invention, with reference to embodiment, the present invention is described in more detail.
Embodiment 1
A kind of river course or the ecological dredging processing method in lake, including the process to bed mud, riverbed and river levee riverbank, have
Body comprises the following steps：
（1）With interim dam, river course is separated into multiple cofferdam, the bed mud in cofferdam is dug out, add modified in bed mud
Agent is modified, removes the heavy metal ion in bed mud, is then transported to after bed mud stacking drying bed carries out drying and other treatment and recycles；Institute
State bed mud and stack drying bed surrounding and be provided with and enclose low bank between fields, described low bank between fields medial wall of enclosing is provided with anti-seepage geomembrane, and described bed mud stacks mummification
Field is up sequentially provided with french drain impervious barrier, french drain, mud mattress layer, mud bed filter layer and the bed mud for stacking bed mud from bottom
Store up layer, in described french drain, be provided with leachate collection pipe；
（2）Riverbed after dredging bed mud is up sequentially provided with supporting layer, transition zone, conversion zone, safe coatings, form
Potamobenthos film recovery system；
（3）It is provided with staged Ecotypic Stone Mesh-box in the bottom of river levee, described staged Ecotypic Stone Mesh-box surface is earth backing layer, described
Bank slope face is provided with eco-concrete layer, and the bottom of described eco-concrete layer is connected with described staged Ecotypic Stone Mesh-box；
It is emergent aquactic plant vegetable layer on described earth backing layer and described eco-concrete layer, shield is planted in the dike face Shang Youdi face of described river levee
Layer, forms ecological shore protection system.
Dredge procedure declaration：
As shown in figure 1, described river bottom mud is dredged dredges method using draining pool machinery, with interim dam 1 by river course
It is separated into multiple cofferdam 2, select one of cofferdam Veritical mud pump 3 will dredge river in area first and drain, river is taken out
After dry, first with excavator 4, bed mud dug and transport bank, then be attached on belt conveyer 6 with forklift 5, and with batch charger 7 by flyash
It is added on belt conveyer with modified to bed mud（Its volume proportion is：Flyash:Bed mud=1:10, flyash contains substantial amounts of
The necessary nutrient of the crops such as soluble silicon, calcium, magnesium, phosphorus；In addition, flyash contains Al2O3, CaO isoreactivity material, energy
Remove river bottom mud in containing heavy metal ion）.Flyash conveys after mixing on belt conveyor by proportioning and river bottom mud
To dump truck 8, then bed mud is transported to by dump truck and stacks drying bed 9.
As shown in Figure 2, described bed mud stacks drying bed 9, and surrounding is provided with encloses low bank between fields 9-1, from 500 × 400mm braiding
Packeted soil ramp type encloses low bank between fields, encloses low bank between fields top width 1000mm, bottom width 2000mm.Enclose the polypropylene antiseepage soil laying 250g/ inside low bank between fields
Work film 9-2.From bottom, up direction is disposed with french drain impervious barrier 9-3 again（Impervious barrier is by clay and bentonite by volume
6:4 mix, highly for 300mm）, french drain 9-4（Filling 30 ~ 50mm rubble in french drain, french drain is trapezoidal, lower width 1000mm,
Upper width 2000mm, height 600mm）, leachate collection pipe 9-5（Caliber is DN150mm, becomes 60 ° of angles in the tube hub straight line that lets droop
Both sides interlock perforate, and pitch-row is 100mm, and aperture is 15）, mud mattress layer 9-6（Grain size of gravel 4 ~ 8mm, thickness 200mm）, mud bed
Filter layer 9-7（Quartz sand particle size 1 ~ 2mm, thickness 300mm）, bed mud stack layer 9-8（Bed mud carries out nature in stacking drying bed to be done
It is used as the base manure in forest land after changing dehydration and topdresses, be not only provided that the nutrient needed for arboreal growth, improve forest production, Er Qieke
With improved soil, increase soil fertility, accomplish forest land resource）, the percolate after filtration is after leachate collection pipe 9-5 collection
Enter sedimentation tank 10, supernatant after precipitation enters municipal sewage system, glar returns stacks drying bed.
From the figure 3, it may be seen that described ecological shore protection system 11, bottom is provided with staged Ecotypic Stone Mesh-box 11-1（Ecotypic Stone Mesh-box
Height 500mm, width 400mm, long 2000mm, iron wire cylinder mould uses in aperture 60 ~ 80mm, cylinder mould and loads with diameter greater than 80mm's
Block stone）.Ecotypic Stone Mesh-box surface is earth backing layer 11-3 planting plants, and Ecotypic Stone Mesh-box is up provided with ramp type infiltration concrete 11-2
To dike face（Eco-concrete selects the concrete prefabricated ball of 300mm, can grow small-sized straw or like vegetable, and can grow large-scale algae
Class, provides more vivospheries for microorganism, meiofauna simultaneously）；On gabion earth backing layer and eco-concrete, water is endured in plantation
Plant Rhizoma Acori Graminei 11-4, sheath 11-5 is planted in dike face.
As shown in Figure 4, described potamobenthos film recovery system 12, the river bed after dredging up is provided with support successively
Layer 12-1（Gravel, particle diameter 8 ~ 16mm, thickness is 100mm）, transition zone 12-2（Gravel, particle diameter 4 ~ 8mm, thickness is 100mm）, anti-
Answer layer 12-3（Cobble, particle diameter 2 ~ 4mm, thickness is 100mm）, safe coatings 12-4（Quartz sand, particle diameter 0.95 ~ 1.35mm is thick
Degree 200mm）.
The recovery of potamobenthos film, in addition to the function that safety covers, also can produce contact precipitation, absorption and oxidation to reasonable
Decomposition, to improve water quality with this, repairs the ecological environment of water body.
Embodiment 2
With a kind of river course of the present invention or the ecological dredging processing method in lake, the river course in certain city southern is administered.
In water quality assessment index before improvement, CODcr, ammonia nitrogen, total nitrogen and total phosphorus are bad V class on all sections, belong to typical
" black smelly " river, after administering, eliminates that river is black smelly, river water summer transparency generally improves to 400mm, and winter reaches
600mm, water quality reaches《Reuse of wastewater water for scenic environment use water standard》（GB/T 18921-2002）.
Claims (13)
1. the ecological dredging processing method in a kind of river course or lake, is characterized in that, including the place to bed mud, riverbed and river levee
Reason, specifically includes following steps：
（1）With interim dam, river course is separated into multiple cofferdam, the bed mud in cofferdam is dug out, add modifying agent to change in bed mud
Property, remove the heavy metal ion in bed mud, be then transported to after bed mud stacking drying bed carries out drying and other treatment and recycle；Described bottom
Mud is stacked drying bed surrounding and is provided with and encloses low bank between fields, and described low bank between fields medial wall of enclosing is provided with anti-seepage geomembrane, described bed mud stack drying bed from
Bottom is up sequentially provided with french drain impervious barrier, french drain, mud mattress layer, mud bed filter layer and stores up for stacking the bed mud of bed mud
Layer, is provided with leachate collection pipe in described french drain；
（2）Riverbed after dredging bed mud is up sequentially provided with supporting layer, transition zone, conversion zone, safe coatings, forms river bed
Biomembrane recovery system；
（3）It is provided with staged Ecotypic Stone Mesh-box in the bottom of river levee, described staged Ecotypic Stone Mesh-box surface is earth backing layer, described riverbank
Slope is provided with eco-concrete layer, and the bottom of described eco-concrete layer is connected with described staged Ecotypic Stone Mesh-box；Described
It is emergent aquactic plant vegetable layer on earth backing layer and described eco-concrete layer, sheath, shape are planted in the dike face Shang Youdi face of described river levee
Become ecological shore protection system.
2. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described modification
Agent is flyash, and the consumption of described flyash is 0.08-0.12 times of bed mud quality.
3. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described antiseepage
Geomembrane is polypropylene anti-seepage geomembrane.
4. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described french drain
The rubble of interior filling 30 ~ 50mm, described french drain cross section is trapezoidal, and upper width is more than lower width.
5. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described diafiltration
Liquid collecting pipe both sides interlock perforate, and pitch-row is 100mm-150 mm, and aperture is 15 mm -20 mm.
6. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described mud bed
Bed course is the gravel layer in 4 ~ 8mm for the particle diameter, the thickness 200mm-300mm of described mud mattress layer.
7. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described mud bed
Filter layer is quartz sand layer between 1 ~ 2mm for the particle diameter, and the thickness of described mud bed filter layer is 250mm-350mm.
8. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（1）Described diafiltration
Liquid collecting pipe is connected with sedimentation tank.
9. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（2）Described support
Layer is gravel between 8mm ~ 16mm for the particle diameter, and the thickness of described supporting layer is 100mm-200 mm.
10. river course or the ecological of lake dredge processing method according to claim 1, it is characterized in that, step（2）Described transition
Layer is gravel between 4mm ~ 8mm for the particle diameter, and the thickness of described transition zone is 100mm-200 mm.
The ecological dredging processing method in 11. river course or lakes according to claim 1, is characterized in that, step（2）Described reaction
Layer is cobble between 2 ~ 4mm for the particle diameter, and the thickness of described conversion zone is 100mm-200 mm.
The ecological dredging processing method in 12. river course or lakes according to claim 1, is characterized in that, step（2）Described safety
Cover layer is quartz sand layer between 0.9mm ~ 1.5mm for the particle diameter, and the thickness of described safe coatings is 100mm-200 mm.
The ecological dredging processing method in 13. river course or lakes according to claim 1, is characterized in that, step（3）Described ladder
Formula Ecotypic Stone Mesh-box height is 400mm -500mm, and width is 400mm -500mm, and length is 2000mm-2500mm, cylinder mould aperture
For the block stone with diameter greater than 80mm for the filling in 60 mm ~ 80mm, cylinder mould.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106904815A (en) * | 2017-02-07 | 2017-06-30 | 江苏江达生态环境科技有限公司 | A kind of natural water reparation, the method safeguarded |
| CN106906812B (en) * | 2017-03-17 | 2019-04-19 | 中国科学院武汉岩土力学研究所 | A method of artificial ecologic island is built using river and lake silt |
| CN108547251A (en) * | 2018-04-17 | 2018-09-18 | 北京夏都水利工程有限公司 | A kind of method that dredging is dug in water conservancy punching |
| CN109408982B (en) * | 2018-11-01 | 2019-06-14 | 中国水利水电科学研究院 | A kind of big partial size material dredging method |
| CN110790386A (en) * | 2019-10-23 | 2020-02-14 | 南京理工大学 | Ecological restoration method for steep lake shore zone of shallow lake with polluted bottom mud |
| CN110845103A (en) * | 2019-12-17 | 2020-02-28 | 河南省地质环境规划设计院有限公司 | Heavy metal polluted river bottom mud treatment method |
| CN112012160B (en) * | 2020-08-05 | 2022-04-19 | 兴源环境科技股份有限公司 | Environment-friendly dredging method |
| CN113371956B (en) * | 2021-02-10 | 2022-03-04 | 中庆建设有限责任公司 | Method for treating bottom mud of surface water body |
| CN113754214A (en) * | 2021-09-15 | 2021-12-07 | 中建三局第一建设工程有限责任公司 | Preparation method of bottom mud covering layer of black and odorous river channel and ecological restoration method of black and odorous river channel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1081733A (en) * | 1992-07-25 | 1994-02-09 | 山东省菏泽地区工业经济技术研究中心 | River course dry type desilting (excavation) method and equipment |
| AU2210195A (en) * | 1994-04-11 | 1995-10-30 | Lars Leander Eriksson | Method and apparatus for extraction of marine sediments |
| CN1263368C (en) * | 2004-02-19 | 2006-07-12 | 杨海军 | Engineering method of recovering degraduted river bank by reed |
| CN201458934U (en) * | 2009-08-31 | 2010-05-12 | 江苏江达生态科技有限公司 | River and lake sludge consolidation stock dump |
| CN102776866B (en) * | 2011-05-11 | 2015-03-04 | 同济大学 | Multi-dimensional filler ecological type protected slope construction method suitable for repairing riverways in towns |
| CN104803572B (en) * | 2015-05-12 | 2016-08-24 | 山东省环科院环境工程有限公司 | The dredging of ephemeral stream heavy metal polluted bed mud and dystopy administering method and system |
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