CN109024468A - The construction and its implementation method of ecology collection desilting - Google Patents
The construction and its implementation method of ecology collection desilting Download PDFInfo
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- CN109024468A CN109024468A CN201810901693.XA CN201810901693A CN109024468A CN 109024468 A CN109024468 A CN 109024468A CN 201810901693 A CN201810901693 A CN 201810901693A CN 109024468 A CN109024468 A CN 109024468A
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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
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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 belongs to the constructions and its implementation method of the ecology collection desilting of technical field of water environment treatment.Technical solution are as follows: mud-collecting slot is located at ingoing river and flows at the bed mud sedimentary in direction, and flows to vertical angle arrangement with ingoing river；River entrance two sides of the front end close to ingoing river of mud-collecting slot are arranged in baffle；Baffle and ingoing river flow to tilt angle arrangement, and the altitude range of baffle is between lake river normal low water level (N.L.W.L.) and lake river normal high water level (N.H.W.L.)；Bluff body is located at mud-collecting slot rear end；Bluff body and ingoing river flow to vertical angle arrangement；The altitude range of bluff body is between lake river normal low water level (N.L.W.L.) and lake river normal high water level (N.H.W.L.)；The slot inner top setting envelope body of mud-collecting slot, the interior setting of mud-collecting slot can monitor the observation facility of bed mud deposition in measurement mud-collecting slot.Controlled constrain in some setting range of the bed mud that need to be removed can be deposited by the technology and implementation method, effectively control sediment pollution, it is implementable to repeat at periodic or other desired Dredging Construction.
Description
Technical field
The present invention relates to technical field of water environment treatment, be related to a kind of ecological dredging technology for lake endogenous improvement and
Implementation method.
Background technique
Bottom mud in lake is the important component of natural water area, is both lake water-soil environment metaboly band, is also simultaneously
Heavy metal, organic matter, nitrogen phosphorus etc. with entering the savings of lake substance, are released under the effect of the extrinsicfactors such as stormy waves, temperature to overlying water
Nutritional ingredient is put, water pollution and lake eutrophication are caused, becomes important endogenous pollution.Bottom mud in lake be mainly derived from into
Loke shore terrestrial facies sand grain, the intracorporal suspended particulate of water, water plant and the algae residuum deposition of lake river conveying.Bottom mud in lake
Accumulation distribution, contamination characteristics and lake region position, go out ingoing river, lake region hydrological environment, external source environment etc. have it is more significant
Correlation, the seriously polluted region of bottom mud in lake are generally mainly distributed on the partial zones such as lake basin surface layer and polluted river channel lake inlet gulf
Domain.
Ecological dredging technology is one of the effective measures that endogenous pollution of substrate sludge of lake is administered.By engineering measure with lesser
It dredges project amount and more pollutant is removed into water body in lake in company with the earthwork together, can obviously reduce pollutant load water in bed mud
It is flat, cut down lake endogenous pollution load.In recent years, it is real all successively to carry out large-scale ecological dredging engineering for Taihu Lake, Chaohu etc.
It tramples, the preferable effect of acquirement.
But how to determine that suitable dredging range, dredging depth are extremely complex technical problems.Firstly the need of to lake
It moors bed mud and carries out large-scale bed mud distribution and pollution basic data investigation, then life is determined by basic survey Analysis on Results demonstration
State dredging range, dredging depth and scale, the engineering design period is long, time-consuming and laborious.Simultaneously as the main collection of bottom mud in lake pollution
In deposited in surface layer modern times, dredging engineering finally proves determining dredging depth, and generally shallower (dredging that be averaged of such as Taihu Lake is deep
Degree is 20~30cm), dredging area is huge, and (it is 110km that such as Taihu Lake, which adds up dredging area,2), this accurate, thin layer dredging is wanted
Derivation causes desilting efficiency data relatively low, and economy is poor, invests huge.On the other hand, the feelings constant in external hydrodynamic condition
Bed mud deposition, back-silting property have very strong regularity under condition, if estuary of the lake sediment pollution degree is more serious, bed mud deposition speed
Rate is higher, and part estuary of the lake region is even up to annual to increase by 10~20cm or more of bed mud deposition height.Even if having been carried out
Ecological dredging, but new polluted bed mud sedimentary will be generally formed after 3~5 years, dredging often will be carried out every the several years,
It is the region that dredging needs to pay close attention to.
To solve the practical problem faced in current lake ecological dredging, endogenous pollution of substrate sludge is effectively controlled, it is necessary to fill
Point using bed mud deposition and characteristic of back-silting, traditional " investigation-dredging-back-silt-dredging again " river harnessing ideas is changed into " orientation is become silted up
Long-pending, regular dredging " river harnessing ideas, a kind of more effective dredging design and construction technique scheme of exploratory development.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of for the pollution bottom such as estuary of the lake, cyanobacteria accumulation regions
Implement orientable siltation, a kind of construction for the ecology collection desilting for repeating at periodic or other desired dredging and its embodiment party in mud siltation critical regions
Method.Controlled constrain in some setting range of the bed mud that need to be removed can be deposited by the technology, effectively be controlled
Sediment pollution, and implementable repeat at periodic or other desired Dredging Construction.Become existing passive dredging as active dredging, solves existing dredging design
With time-consuming and laborious in work progress, less economical problem.
The technical solution of the present invention is as follows: including mud-collecting slot, baffle, bluff body；Mud-collecting slot is located at ingoing river flow direction side
To bed mud sedimentary at, and with ingoing river flow to vertical angle arrangement, mud-collecting slot be bed mud sedimentary under dig the recessed of formation
Groove body is fallen into, mud-collecting slot depth is greater than stormy waves to the maximum perturbation depth of bed mud；The front end of mud-collecting slot is arranged in baffle, close to enter
The estuary of the lake two sides in lake river；Baffle and ingoing river flow to tilt angle arrangement, and the altitude range of baffle is river and lake
Between normal low water level (N.L.W.L.) and river and lake normal high water level (N.H.W.L.)；Bluff body is located at mud-collecting slot rear end；Bluff body is vertical with ingoing river flow direction
Angle arrangement；The altitude range of bluff body is between river and lake normal low water level (N.L.W.L.) and river and lake normal high water level (N.H.W.L.).
Based on above-mentioned technical characteristic: the slot inner top setting envelope body of mud-collecting slot.
Based on above-mentioned technical characteristic: setting can monitor the observation for measuring bed mud deposition in the mud-collecting slot in mud-collecting slot
Facility.
In above-mentioned technical proposal, groove body depth, plane configuration and the structure of mud-collecting slot can be determining by design or experience is true
Fixed, groove body depth is generally not less than 1m.Sealing body main purpose is to pass through envelope when not having dredging condition or implementation plan temporarily
Body covering is passivated processing to the sediments in mud-collecting slot, controls sediment pollution, is also convenient for subsequent Dredging Construction.Feng Ticai
Expect that or mixtures thereof materials such as lime, haydite, modified clay etc. can be used, thickness is generally not less than 10cm.It is set inside mud-collecting slot
The observation facility set mainly intuitively to observe bed mud deposition, can be used reinforcing bar concrete square pile, water gauge is arranged above and marks, pushes up
Portion should be higher than that lake river normal high water level (N.H.W.L.) and warning lamp be arranged.Other existing electronic induction equipment or probe can also be used in observation facility
Deng.
Based on above-mentioned technical characteristic, baffle is that the staggered combination in multiple discontinuous water conservancy diversion monomers front and backs constitutes or is
Openable and closable movable gate.River entrance two sides of the front end close to ingoing river of mud-collecting slot, main purpose is arranged in baffle
It is to pass through mud-collecting slot realization orientation sedimentation for constraining the water flow of carrying silt.Not influence river course flood, baffle is preferably more
A discontinuous water conservancy diversion monomer is composed, and has certain tilt angle to arrange using with streamflow direction, and tilt angle can be 0
Degree is to 90 degree.The hard structures such as timber, bored concrete pile generally can be used in water conservancy diversion monomer, or using emergent aquactic plants mode of planting such as reeds
It realizes.Using hard structure, its crest level is generally not more than river and lake normal high water level (N.H.W.L.).
Based on above-mentioned technical characteristic, bluff body is that the staggered combination in multiple discontinuous choked flow monomers front and backs constitutes or is
Openable and closable movable gate.Bluff body is arranged in mud-collecting slot rear end, and main purpose is that the water flow of silt is carried for obstructing, and increases
It is arranged in the stop sedimentation time in mud-collecting slot region, general use with streamflow direction vertical angle.Not influence river
Flood passage, bluff body are preferably that multiple discontinuous choked flow monomers are composed.It is hard that timber, bored concrete pile etc. generally can be used in choked flow monomer
Matter structure, or realized using emergent aquactic plants mode of planting such as reeds.Using hard structure, its crest level is being generally not more than river and lake just
Usually water level.
Based on above-mentioned technical characteristic, the groove body surrounding of mud-collecting slot is edge slope structure.Main purpose is that maintenance groove body is stablized.Side
Soil-slope, ecology bag, step or other structures form side slope can be used in slope structure, it is proposed that the gradient can be 1:1~1:3.
Based on above-mentioned technical characteristic, the groove body bottom of mud-collecting slot is provided with cushion layer structure, makes bed mud sedimentary and lakebed bottom
Portion forms isolation, convenient for the construction of subsequent dredging engineering.Fine sand, rubble, lime, the pottery of certain partial size can be used in course
Or mixtures thereof materials such as grain, modified clay, thickness are not less than 10cm.
Based on above-mentioned technical characteristic, when edge slope structure is soil-slope, cushion layer structure extends from the groove body bottom of mud-collecting slot
To the side slope top layout of the edge slope structure.
A kind of implementation method of the construction of ecology collection desilting, comprising the following steps:
1) water, water pollution situation, sediment particles and deposition characteristics, under water basic survey: are come to ingoing river
Shape, river and lake flow velocity carry out data collection.
2) flow field being carried out using hydrodynamic force numerical model and particle analysis by sedimentation being simulated, lake inlet is determined by analytical calculation
The main range of deposition of estuary of the lake region bed mud and rate of stream, primarily determine design parameter, design parameter packet based on this
Include the bounds and cutting depth of mud-collecting slot, the position of baffle and bluff body；It is sharp again according to the design parameter primarily determined
It is simulated and is checked with numerical model, adjusted repeatedly and determine design parameter；On the basis of design parameter determines, controlled for pollution
System and regular dredging require to carry out mud-collecting slot design, determine the horizontal layout of mud-collecting slot, baffle and bluff body, horizontal layout packet
It includes the shape of mud-collecting slot, size and is arranged in bed mud sedimentary and specifically position, the opposite position of mud-collecting slot and baffle and bluff body
The specific quantization for setting relationship determines；Determine the tilt angle of baffle, the structural material of baffle and bluff body.
3) engineering construction: dry ground mode in cofferdam is carried out according to design scheme and is constructed.
4) daily monitoring: it is heavy that regular inspection mode passes through bed mud in the observation facility grasp mud-collecting slot being arranged in mud-collecting slot
Product situation determines and carries out Dredging Construction when reaching design siltation range.
5) Dredging Construction and envelope body covering: after the bed mud deposition in mud-collecting slot reaches predetermined depth, in mud-collecting slot
Bed mud carries out dredging.When not having dredging condition temporarily, in the top of mud-collecting slot setting envelope body.
6) maintenance after Dredging Construction: after Dredging Construction to mud-collecting slot, baffle and bluff body carry out Inspection and maintenance or
It repairs.
7) be recycled: according to the bed mud deposition of mud-collecting slot and dredging requirement, according to daily monitoring, Dredging Construction and
The mode of maintenance after the covering of envelope body, Dredging Construction is recycled.
Based on above-mentioned technical characteristic: when the groove body surrounding of mud-collecting slot is set as edge slope structure, above-mentioned mud-collecting slot parameter is true
In fixed and design, increase the design of the material, pattern of edge slope structure.
Based on above-mentioned technical characteristic: when the groove body bottom of mud-collecting slot is provided with cushion layer structure, mud-collecting slot parameter determine and
In design, increase the design of cushion layer structure material and thickness.
Exist the invention has the benefit that ingoing river bring bed mud can be made to deposit orientated deposition by the art of this patent
In mud-collecting slot, control bottom mud in lake is deposited on fixed area, is conducive to dredging engineering construction and endogenous pollution of substrate sludge control, reduces
Dredging engineering cost improves endogenous regulation effect, the maintenance lake dredging up regulation effect of longer time.
Detailed description of the invention
Fig. 1, floor map of the invention.
Fig. 2, diagrammatic cross-section of the invention.
Figure label signal are as follows:
1 mud-collecting slot
2 baffles
3 bluff bodys
4 envelope bodies
5 observation facilities
6 riverbanks
7 lakes
8 ground elevations
9 native state bed muds siltation range line
10 edge slope structures
11 ingoing rivers flow direction
12 bed mud mud mud upper threads
13 cushion layer structures
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.These embodiments are only used for
Illustrate the present invention, and not limitation of the present invention.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
As depicted in figs. 1 and 2, ingoing river flows into lake 7, native state bed mud siltation range line 9 such as Fig. 1 along riverbank 6
Shown in middle dotted line, ground elevation 8 is the absolute altitude on riverbank.Mud-collecting slot 1 is located at ingoing river and flows at the bed mud sedimentary in 11 directions,
And 11 vertical angles arrangement is flowed to ingoing river, mud-collecting slot 1 is the recess groove body that formation is dug under bed mud sedimentary；Mud-collecting slot is deep
Degree is greater than stormy waves to the maximum perturbation depth of bed mud；The front end that mud-collecting slot 1 is arranged in baffle 2 enters close to the river of ingoing river
Mouth two sides；Baffle 2 and ingoing river flow to 11 tilt angles arrangement, and the altitude range of baffle 2 is river and lake normal low water level (N.L.W.L.)
Between river and lake normal high water level (N.H.W.L.)；Bluff body 3 is located at 1 rear end of mud-collecting slot；Bluff body 3 and ingoing river flow to 11 vertical angle cloth
It sets；The altitude range of bluff body 3 is between river and lake normal low water level (N.L.W.L.) and river and lake normal high water level (N.H.W.L.)；The slot inner top of mud-collecting slot 1 is set
Envelope body 4 is set, setting can monitor the observation facility 5 of bed mud deposition in measurement mud-collecting slot in mud-collecting slot 1.
Fig. 1 and groove body surrounding shown in Fig. 2 are provided with edge slope structure 10, and main purpose is that maintenance groove body is stablized.Side slope
Soil-slope, ecology bag, step or other structures form side slope can be used in structure.
Groove body bottom is provided with cushion layer structure 13, and 13 main purpose of cushion layer structure is to make bed mud sedimentary and lakebed bottom shape
At isolation, convenient for the construction of subsequent dredging engineering.When the edge slope structure 13 of groove body surrounding is soil-slope, bed course should be extended to
At the top of side slope.The materials such as fine sand, rubble, lime, haydite, the modified clay of certain partial size or its mixing can be used in course
Object, thickness are not less than 10cm.
The envelope body 4 being arranged at the top of groove body, main purpose is to pass through envelope when not having dredging condition or implementation plan temporarily
The covering of body 4 is passivated processing to sediments, controls sediment pollution, is also convenient for subsequent Dredging Construction.Sealing body material can be used
Or mixtures thereof materials such as lime, haydite, modified clay etc., thickness are not less than 10cm.Mark in mud-collecting slot 1 shown in Fig. 2
Height is illustrated as bed mud mud mud upper thread 12.
Baffle 2 is arranged in 1 front end of mud-collecting slot close to river entrance two sides, and main purpose is to carry silt for constraining
Water flow realizes orientation sedimentation by mud-collecting slot 1.Not influence river course flood, baffle is preferably multiple discontinuous water conservancy diversion monomer groups
It closes, there is certain tilt angle to arrange using with streamflow direction.It is hard that timber, bored concrete pile etc. generally can be used in water conservancy diversion monomer
Matter structure, or realized using emergent aquactic plants mode of planting such as reeds.Using hard structure, its crest level is being generally not more than river and lake just
Normal high water level.
Bluff body 3 is arranged in 1 rear end of mud-collecting slot, and main purpose is that the water flow of silt is carried for obstructing, and increases it and is collecting
The stop sedimentation time in 1 region of mud groove.Not influence river course flood, bluff body be preferably multiple discontinuous bluff bodys combinations and
At.The hard structures such as timber, bored concrete pile generally can be used in choked flow monomer, or are realized using emergent aquactic plants mode of planting such as reeds.
Using hard structure, its crest level is generally not more than the normal ordinary water level of river and lake.
Baffle 2 and bluff body 3 can also be using other measures such as openable and closable movable gates.
Mud-collecting slot is internally provided with observation facility 5.Mainly intuitively to observe bed mud deposition.Reinforced concrete side can be used
Water gauge is arranged above and marks for stake, and top should be higher than that high water level and warning lamp is arranged.It is of course also possible to take other existing observations
Facility, not to illustrate to be limited in Fig. 2.
The technology is reasonably led by having the underwater region of river and lake of orientation siltation feature to excavate mud-collecting slot by setting
Fluid, bluff body and mud-collecting slot plane figure form realize riverbed sludge in the siltation of setting regions, by being arranged in mud-collecting slot
Interior observation facility grasps the bed mud siltation situation in mud-collecting slot, also envelope body can be arranged at top after mud-collecting slot is filled with.The skill
Art can greatly reduce the bed mud range of deposition of specific region, be convenient for regular bed mud dredging and subsequent processing, reduce bed mud
Influence of the pollution release to water quality.Sediment pollution control and endogenous improvement of the technology especially suitable for river and lake remittance mouth region domain.?
Technical step when specific implementation is as follows:
(1) basic survey.Water, water pollution situation, bed mud are come to the quasi- ingoing river for implementing dredging region first
Particle and deposition characteristics, underwater topography, river and lake flow velocity carry out detailed basic survey and analysis, for subsequent mud-collecting slot design ginseng
Number, which determines, provides base support.
(2) mud-collecting slot parameter is determining and designs: flow field is carried out using hydrodynamic force numerical model and particle analysis by sedimentation is simulated,
The main range of deposition of estuary of the lake region bed mud and rate of ingoing river are determined by analytical calculation, it is preliminary based on this true
Determine design parameter, design parameter includes the bounds and cutting depth of mud-collecting slot, the position of baffle and bluff body；According to first
The determining design parameter of step recycles numerical model to be simulated and checked, and adjusts repeatedly and determines design parameter；In design parameter
On the basis of determination, requires to carry out mud-collecting slot design for contamination control and regular dredging, determine mud-collecting slot, baffle and bluff body
Horizontal layout, horizontal layout includes the shape of mud-collecting slot, size and is arranged in bed mud sedimentary and specifically positions, mud-collecting slot with lead
The specific quantization of the relative positional relationship of fluid and bluff body determines；Determine tilt angle, baffle and the bluff body of baffle
Structural material.Meanwhile it also can determine the design of the material of edge slope structure, the design of pattern and cushion layer structure material and thickness.
(3) engineering construction.Engineering construction is carried out according to design scheme.It needs to apply using cofferdam dry ground mode when specific implementation
Work.
(4) daily monitoring.Bed mud deposition in mud-collecting slot is grasped by observation facility using regular inspection mode, is determined
Carry out Dredging Construction in time when reaching design siltation range.
(5) Dredging Construction and envelope body covering.After bed mud deposition in mud-collecting slot reaches predetermined depth, in mud-collecting slot
Bed mud carries out dredging.Dry work can be used in dredging.When not having dredging condition or implementation plan temporarily, to be contemplated that the bottom of at
Setting coating is passivated processing to sediments at the top of mud sedimentary, controls sediment pollution, is convenient for subsequent Dredging Construction.
(6) inspection dimension the maintenance after Dredging Construction: is carried out to mud-collecting slot, baffle and the bluff body after Dredging Construction
Shield is repaired.
(7) it is recycled: according to the bed mud deposition of mud-collecting slot and dredging requirement, according to daily monitoring, Dredging Construction
It is recycled with the mode of the maintenance after the covering of envelope body, Dredging Construction.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (14)
1. a kind of construction of ecology collection desilting, it is characterised in that: including mud-collecting slot (1), baffle (2), bluff body (3)；Institute
It states mud-collecting slot (1) to be located at the bed mud sedimentary in ingoing river flow direction (11) direction, and hangs down with ingoing river flow direction (11)
Squareness arrangement, the mud-collecting slot (1) are the recess groove body that formation is dug under the bed mud sedimentary, mud-collecting slot (1) depth
Greater than stormy waves to the maximum perturbation depth of bed mud；The baffle (2) setting is in the front end of the mud-collecting slot (1), close to entering lake
The estuary of the lake two sides in river；The baffle (2) and ingoing river flow direction (11) tilt angle arrangement, the baffle
(2) altitude range is between river and lake normal low water level (N.L.W.L.) and river and lake normal high water level (N.H.W.L.)；The bluff body (3) is located at the mud-collecting slot
(1) rear end；The bluff body (3) and ingoing river flow direction (11) vertical angle arrangement；The height model of the bluff body (3)
It encloses between river and lake normal low water level (N.L.W.L.) and river and lake normal high water level (N.H.W.L.).
2. a kind of construction of ecology collection desilting according to claim 1, it is characterised in that: the slot of the mud-collecting slot (1)
Inner top setting envelope body (4).
3. a kind of construction of ecology collection desilting according to claim 1, it is characterised in that: setting in the mud-collecting slot (1)
The observation facility (5) for measuring the interior bed mud deposition of mud-collecting slot (1) can be monitored.
4. a kind of construction of ecology collection desilting according to claim 2, it is characterised in that: setting in the mud-collecting slot (1)
The observation facility (5) for measuring the interior bed mud deposition of mud-collecting slot (1) can be monitored.
5. a kind of construction of ecology collection desilting according to claim 1, it is characterised in that: the baffle (2) is more
Staggered combination is constituted before and after a discontinuous water conservancy diversion monomer.
6. a kind of construction of ecology collection desilting according to claim 1, it is characterised in that: the baffle (2) is can
The movable gate of folding.
7. a kind of construction of ecology collection desilting described according to claim 1 or 5 or 6, it is characterised in that: the bluff body
(3) it is constituted for staggered combination before and after multiple discontinuous choked flow monomers.
8. a kind of construction of ecology collection desilting described according to claim 1 or 5 or 6, it is characterised in that: the bluff body
It (3) is openable and closable movable gate.
9. a kind of construction of ecology collection desilting according to claim 1, it is characterised in that: mud-collecting slot (1) groove body
Surrounding is set as edge slope structure (10).
10. a kind of construction of ecology collection desilting according to claim 9, it is characterised in that: the edge slope structure (10)
Groove body bottom for soil-slope, the mud-collecting slot (1) is provided with cushion layer structure (13), and the cushion layer structure (13) is from the collection
The groove body bottom of mud groove (1) extends to the side slope top layout of the edge slope structure (10).
11. a kind of construction of ecology collection desilting according to claim 1 or described in 9, it is characterised in that: the mud-collecting slot (1)
Groove body bottom be provided with cushion layer structure (13).
12. a kind of implementation method of the construction of ecology collection desilting as claimed in claim 4, it is characterised in that including following step
It is rapid:
1) water, water pollution situation, sediment particles and deposition characteristics, under water basic survey: are come to the ingoing river
Shape, river and lake flow velocity carry out data collection；
2) mud-collecting slot parameter is determining and designs: carrying out flow field using hydrodynamic force numerical model and particle analysis by sedimentation is simulated, pass through
Analytical calculation determines the main range of deposition of estuary of the lake region bed mud and rate of the ingoing river, preliminary based on this true
Determine design parameter, the design parameter include the mud-collecting slot (1) bounds and cutting depth, the baffle (2) and
The position of the bluff body (3)；It recycles numerical model to be simulated and checked according to the design parameter primarily determined, adjusts repeatedly
The whole determination design parameter；On the basis of the design parameter determines, require to carry out institute for contamination control and regular dredging
Mud-collecting slot (1) design is stated, determines the horizontal layout, described of the mud-collecting slot (1), the baffle (2) and the bluff body (3)
The structural material of the tilt angle of baffle (2), the baffle (2) and the bluff body (3)；
3) engineering construction: dry ground mode in cofferdam is carried out according to design scheme and is constructed；
4) it daily monitoring: is periodically patrolled by the observation facility (5) being arranged in the mud-collecting slot (1), grasps the collection
The interior bed mud deposition of mud groove (1) determines and carries out Dredging Construction when reaching design siltation range；
5) Dredging Construction and envelope body covering: after the bed mud deposition in the mud-collecting slot (1) reaches predetermined depth, to the collection mud
Bed mud in slot (1) carries out dredging, and when not having dredging condition temporarily, the envelope is arranged at the top of the mud-collecting slot (1)
Body (4)；
6) maintenance after Dredging Construction: to the mud-collecting slot (1), the baffle (2) and the bluff body after Dredging Construction
(3) Inspection and maintenance or reparation are carried out；
7) it is recycled: according to the bed mud deposition of the mud-collecting slot (1) and dredging requirement, according to the daily monitoring, institute
The mode for the maintenance stating Dredging Construction and sealing after body covering, the Dredging Construction is recycled.
13. the implementation method of the construction of ecology collection desilting according to claim 12, it is characterised in that: the mud-collecting slot
(1) groove body surrounding is set as edge slope structure (10), in the mud-collecting slot parameter determination and design, increases the edge slope structure (10)
Material and pattern design.
14. the implementation method of the construction of ecology collection desilting according to claim 12, it is characterised in that: the mud-collecting slot
(1) groove body bottom is provided with cushion layer structure (13), in the mud-collecting slot parameter determination and design, increases the cushion layer structure
(13) design of material and thickness.
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Cited By (2)
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| CN111411608A (en) * | 2020-04-01 | 2020-07-14 | 中国科学院南京地理与湖泊研究所 | Integrated method for sweeping, collecting and capturing endogenous pollutants and algae seeds on lake bottom surface |
| CN113045157A (en) * | 2020-10-26 | 2021-06-29 | 无锡德林海环保科技股份有限公司 | Sedimentation type sludge in-situ treatment device and method |
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| CN103669281A (en) * | 2013-12-16 | 2014-03-26 | 重庆大学 | Method for assisting in fixed-point dredging of black and odorous watercourse through rubber dams |
| CN106567361A (en) * | 2016-11-01 | 2017-04-19 | 上海勘测设计研究院有限公司 | System and method for controlling silt deposition in river channel |
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| CN103669281A (en) * | 2013-12-16 | 2014-03-26 | 重庆大学 | Method for assisting in fixed-point dredging of black and odorous watercourse through rubber dams |
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