CN1123354A - Apparatus for obtaining sands from bottom of river - Google Patents
Apparatus for obtaining sands from bottom of river Download PDFInfo
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- CN1123354A CN1123354A CN 94118717 CN94118717A CN1123354A CN 1123354 A CN1123354 A CN 1123354A CN 94118717 CN94118717 CN 94118717 CN 94118717 A CN94118717 A CN 94118717A CN 1123354 A CN1123354 A CN 1123354A
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- sand
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Abstract
The relieved teeth of the invented sand shovelling device are projected from the front of shovelling device main body, and inserted into mud by the action of gravity of said main body, then drawn by steel pick drawing boat to move, and then the mud is lifted up, through the lifting table and fallen in the bucket conveying chain, and then fed onto the mud carrier by barge-loading belt conveyor. Said relieved teeth are replaceable for superhard steel.
Description
The present invention relates in the civil engineering of ocean, is the apparatus for obtaining sands from bottom of river of support with the powerful propulsion plant of special operation ship.
The place, river mouth of super large rivers in the world mostly has the metropolis to be born.Though suffered huge sacrifice because of the diluvial attack of several since the wound generation, flood is the low-lying area of landfill gradually, has formed present vast Plain.Yet along with the development of this landfill, it is extremely shallow that near the depth of water the river mouth becomes, and rises on the riverbed, and dykes and dams are increased thereupon, and the danger of not only breaching a dyke increases, and it is also difficult to keep the air route.Though municipal government is not tossed aside this problem,, be close in artificial strength and can not have solved because deposition sand amount is too big.
Operation ship as the past has: silt pumping station, excavation motor vessel, bucket type ship, dipper dredger, backhoe shoveling ship etc.Though each sand amount of taking is increasing, any shoveling ship is not to use the steel wire tensioning around ship, squeezes into guide pile exactly ship is fixed.The job area of operation ship is confined to around it, therefore can not give full play to the effectiveness of dredge boat.These ships do not have maneuverability, and moving needs the time.In addition, dredge boat still hinders the obstacle of other ships.The actual effect of dredging from these ships of past and is that the water-bed sand of unit moves and can't compare with hundred million.Even the ship that can move separately not only costs an arm and a leg but also the ship storehouse of maximum tonnage can reach 6000m
3Steamer also can stay the vestige of excavation, so also in addition need water-bed ground is smooth.In addition, in the steamer operation way, when the earth water outlet, often earth is fallen into the water again owing to reason that can not prediction.Operating type to this backwardness can not be ignored.The most important thing is to keep away in the improvement in rivers, bay and do flood period, wholeheartedly finish predeterminated target in the dry phase.According to the present invention, as long as increase the steel punt-pole that to exploit one's power as required.In addition, occurring in nature, sand running-down in wide basin, alluvial is in the river course, if planned conversely (utilizing computer to realize) shovel is got sand, be transported in the contiguous identical river mouth, in metropolitan field, produce the Xin Lu district of desired height, move required investment by efficiently utilizing the soil can regain sand quickly, play the final purpose of administering rivers, resurrection harbour, development city.
In view of above problem, the present invention relates to a kind of dredging operation ship, provide a kind of bed mud mamoty to get device especially, using this device can finish the sand shovel efficiently gets, reach purpose of the present invention: shovel is got sand, the improvement rivers in the river bed, brings back to life harbour, navigation channel or produce the level land in the river mouth.
For achieving the above object, river bed of the present invention shovel is got the sand device, charge in the earth of river bed under the effect of main body deadweight by being contained in the superhard teeth that shovel gets main body, move in the river bed, effect lower edge of tractor tug then, make and mix soil and upwards shift out the water surface and fall into conveyer belt along the sand upgrade platform.Apparatus of the present invention also have the means of regulating native process of shovel and teeth angle, and have and prevent that sand from dropping out and fall into the means of korneforos again.
Below in conjunction with figure explanation structure of the present invention and effect.Wherein:
Fig. 1 is the operation ship allocation plan.
Fig. 2 is operation ship A-A skiagraph.
Fig. 3 is C-C skiagraph.
Fig. 4 is that shovel is got device lower junction composition.
Fig. 5 is that shovel is got device upper junction composition.
Fig. 6 is that back side D-D is to view.
Fig. 7 is that F-F is to elevation.
Fig. 8 is E-E profile.
The commutative tooth of Fig. 9 enlarges key diagram.
Figure 10 is B-B profile.
Figure 11 is deck funnel 4-1 key diagram that dewaters.Its a is the plane enlarged drawing, and b is the side enlarged drawing, and c removes the water pond enlarged drawing.
Figure 12 is chain 23 amplification profiles.
Figure 13 is steel punt-pole 1-1 amplification profile diagram.
Figure 14 is driving-belt barge 4I-I profile.
Figure 15 is the G-G profile of bucket type conveyer belt 3.
Figure 16 is driving wheel 3-1 a rotating part amplification profile.
Figure 17 is the further explanatory drawings of bucket type conveyer belt, and a is the location diagram of between centers, and b installs profile.
Figure 18 is that H-H is to elevation.Wherein symbol is represented respectively among the figure: 1: powerful punt-pole operation ship, 1-1: the steel punt-pole, 1-2: the slip case, 1-3: oil cylinder, 1-4: the oil pressure hoist engine, 1-5: the hole of deck ship, 1-6: tooth bar, 1-7: guide rail, 1-8: fastenings, 1-9: hydraulic operation chamber and cabin, 1-10: driving-belt barge 4 mooring hoist engines, 1-11: shovel is got the angular adjustment hoist engine, 1-12: connect steel wire, 1-13: bearing pin, 1-14: rubbing strake, 1-15: withe, 1-16: the synthetic operation chamber, 1-17: shovel is got the steel wire of angular adjustment hoist engine, 1-18: the drive division that is used to make the punt-pole inclination.2: the sand shovel is got device, 6: superhard sand shovel is got tooth, 7: the sand shovel is got the scraper bowl, 8 of device: horizontal component, 9: sand upgrade platform, 10: cross cleaning shoe, 11: drive motors, 12: sand falls mouth, 13: sand overburden, 14: shovel is got and regulated steel wire support, 15: shovel is got device lifting portion, 16: chain installing component, 17: water-bed ground, 18: shovel is got ground, 19: transmission tooth, 20; Main body wear protection platform, 21; Sand lid, 22: replaceable shovel is got the mounting screw, 23 of tooth 6: arc welding chain, 24: shovel is got device and is used whim, 25 up and down; Guide wheel, 3: the bucket type conveyer belt, 3-1: driving wheel, 3-2: idle pulley, 3-3: chain bucket: 3-4: bucket type conveyer belt hanging apparatus, 3-5: the chain bucket bolster, 3-6: the roller chain rivet, 3-7: sprocket wheel, 3-8: roller guide rail, 3-9: longeron, 3-10: crossbeam, 3-11: connector, 3-12: dividing plate, 3-13: the gap, 3-14: aperture, 3-1: chain bucket promotes uses the line dish, 4: the driving-belt barge, 4-1: the deck funnel, 4-2: luffing crane (be equipped with to look around and use sensor), 4-3: shovel is got the main body lifting appliance, 4-4: promote with line dish (hoist engine), 4-5: the Rubber Conveyor Belt Scrap of band hangnail, 4-6: the inclined bearing platform, 4-7:V type conveyer belt, 4-8: the turbo-generator chamber, 4-9: article warehouse and crewman's dormitory, 4-10: workshop, 4-11: the circulation hoist engine, 4-12: pulley, 4-15:V type band backing roll, 4-16: the break-in wheel, 4-17:V type band is around raising machine, 4-18:V type band lower support roller, 4-19: the tether bolt, 4-20: remove water pond, 4-21: remove the water pond aperture, 4-22: direct gutter, 4-23: suction water pipe, 4-24: motor, 4-25: pulsating pump, 4-26: deck funnel 4-1 support unit, 4-27: the deck, 4-28: deck funnel 4-1 supporting station, 4-29: muck haulage ship union piece, 4-30: the simple and easy pusher of centre frame port side, 4-31: the center adds the simple and easy pusher of starboard side, 5: the muck haulage ship, 5-1: push boat, 5-2: the sand loading part, 5-3: sand discharging door, 5-4: watertight aircase;
1. powerful tractor tug 1
As shown in figure 10, the structure of hull is with 3 square ships in succession together, is rigid structures.Upper deck is set as certain bending, so drainage is good.Sealing next door 1-5 is 4 to take turns piece, is two array structures.Longitudinal division 1-15 is connected into integrative-structure securely.Be provided with 6 holes 1-5 between next door, the motion space of this Kong Weigang punt-pole 1-1.Square steel plate manufacturing peculiar to vessel, its inner fluid-tight space makes it to obtain desired buoyancy, and hull is added with and prevents bending, the gusset that reverses, and also strengthens around the hole 1-5.Propulsion plant is housed on the deck, makes it to produce to advance and make a concerted effort.Be steel punt-pole 1-1 with tooth bar 1-6 and the gears engaged that are contained in the oil pressure hoist engine 1-4 be power, the action by drive division 1-18 makes it to tilt to 30 ° from 70 °, produces a propulsive force this moment.The sliding case 1-2 that is mounted with the bearing pin 13 of support steel punt-pole 1-1 drives on guide rail 1-7 by oil cylinder 1-3 and moves back and forth, and produces a propulsive force when advancing, and this propulsive force and above-mentioned propulsive force form to advance makes a concerted effort.As shown in the figure, this device on longitudinal direction, cross over longitudinal division 3 groups of settings in 1-15 fens.Generally make it by 2 groups among the 1-2,2-3,3-1 actions, realize advancing continuously.Therefore link together by the ships of fastenings 1-8, and be separated with rubbing strake material (rubber system) 1-14 wherein, these ships walked together, thereby can increase the quantity of steel punt-pole 2 these devices of row of configuration on the next door 1-15.Because these ships retreat difficulty, so be provided with the auxiliary propulsion plant (pusher in past) that can make it to walk at cabin 1-9.And this cabin is held concurrently and is oil (liquid) pressure operating chamber; Be provided with fuel tank, pump, motor, control valve, console etc.The overall operation that is provided with ship on the bow with synthetic operation chamber 1-16 (be operating as: between the oil pressure between relation, the hoist engine relation, speed governing, shovel get adjustments, the long-pending heap of sand, with the relation of other ship, reach and respectively install the observation that the depth of water is represented).Sensor, assurance, observation overall situation situation are housed in the place of necessity and judge.Operate by the electric remote control means that reach.Tractor tug 1 is got device 2 with shovel and is connected by the electric resistance welding chain 23 that is connected chain link 16,16-1, when can resist strong power, also can eliminate the impact that is caused by wave.Because steel punt-pole 1-1 inserts in the water-bed ground, 2 in 3 devices can not be subjected to the influence of wave impact.Shovel is got device 2 and the chain bucket conveyer belt can not produce fault like this.Tractor tug 1 becomes by the depth of water with interval between the conveyer belt barge 4 that can regard the loading trestle that floats on the surface as and (separates during shallow place, adjacent to each other during the depths), so be provided with hoist engine 1-10 in addition and steel wire 1-12 is connected on the bollard 4-19, adjust its spacing from, this process can not exert an influence to the chain bucket conveyer belt 3 in the middle of their.Hoist engine 1-11 and steel wire adjustment shovel are got angle, make the wedging amount increase and decrease of superhard hard tooth 6.Under the harsh climate condition, aborting job is 70 ° with whole punt-poles 1-1 and inserts water-bed faces, takes refuge attacking direction dorsad.The general ship of this ship is even better.The sand that this powerful tractor tug is got requirement except that shovel in a large number, also have traction chain conveyor 3, the ability of chain conveyor barge 4, muck haulage ship.
2. shovel is got device 2
The big setting that reaches ability less that shovel is got main body is a key point of the present invention.Kind was shoveled sand amount and the annual average sand amount that runs off that the amount of getting sand is decided by that requirement is all transported in 1 second.The so-called sand amount of all transporting is meant entended stream road and air route moved to the marine sand amount that should scalp will make the sand amount that is located in the same river mouth.The corresponding therewith number of getting steel punt-pole 1-1 is got into 3 figure place.Size, the ability of each operation ship have been determined thus.
The design speed of tractor tug of the present invention is 1m/s (every capable average speed), and the shovel ability of getting is wide 20m, and the difference that water-bed ground 17 and shovel are got ground 18 is that the wedging ground amount of replaceable tooth 6 is 1m, supposes to shovel and gets 20m
3/ s removes machinery overhaul, reorganizes and outfit and bad weather, day off etc., and can calculate every year by 300 days, work in 1 day 8 hours, and one day clay-shoveling amount is 20m so
3* 60 seconds * 60 minutes * 8 hours=60,000 m
3/ day, can shovel soil 1.8 hundred million m in 1 year
3/ year, the work if B works in three shifts then is 5.4 hundred million m
3/ year.
As announcing, the sand running-down amount in the Changjiang river is 500,000,000 m
3/ year, the Yellow River is 1,000,000,000 m
3/ year, can think after the Three Gorges Projects completion that the sand running-down phenomenon can eliminate, but can not expect that there is same result the Yellow River.
Shovel is got device 7 and is formed by the high-strength steel sheet welding assembly, and the commutative tooth 6 of its front end be an extra hard steel, and connects or with the way of welding in succession with bolt.In the most serious place of wearing and tearing, or in time change tooth or with gas cutting with it excision, repair as required.Water-bed sand can make like this to shovel and get in the easy wedging soil of device owing to during the solidification hardening of hydraulic pressure all the year round and little sand grains, can adopt alternate tooth arrangement mode (promptly go up and remove a tooth between a tooth and next tooth) as shown in the figure.Shovel is got device central authorities and is spill, does not overflow for making sand, adopts sand lid 21 to cover.There is chain installing component 16 at the two ends of teeth, and chain 23 is contained on the both sides 16-1 of steel punt-pole action center portion.(with reference to Fig. 1).When operation began, shovel was got main body 7 and is hung down by luffing crane 4-2, made it to contact with water-bed, owing to the front end of teeth 6 is given prominence to from the bottom surface of main body 7, so begin operation when being pulled.For shoveling process is regulated, hoist engine 1-11 pull lines 7,1-17 are linked to each other, with adjusting cable wire supporting 14 so can regulate the angle of teeth 6.Teeth wedging amount is excessive, and then to get sand too much for shovel, when overflowing in chain bucket 3-3, gets device lifting parts 15 with shovel and links to each other because shovel is got apparatus main body lifting appliance 4-3, regulates so main body 7 can be mentioned slightly.The sand got of shovel from after press forward, can not overflow to the outside.The tooth of left and right end portions shovels soil at first, and native then sand is by horizontal component 8, moves upward after rising to sand upgrade platform (9-1,9-2,9-3) together, further moves up under the covering of sand lid 21.In this motion for auxiliary sand, use motor 11 to drive and transmit gear 19, drive the axle motion of cross template 10 again, cleaning shoe 10 slowly turns round in the cross signature thereby make, and auxiliary native sand upwards promotes.At the rear portion of main body 7, chain-bucket conveyer belt idler shaft 3-2 connects together with the iron plate of main body 7, and sand is from sand mouthfuls 12 chain buckets 3-3 that fall into rotating running belt 3 that fall.Among the present invention, main body 7 focuses on water-bed the minimizing certainly owing to sealing produces buoyancy, and secondary or three grades of pulleys of use lifting appliance 4-3 can be laborsaving, so hoist engine 4-4 can be easy to it is sling.Among the present invention, be because the wide meeting of conveyer belt causes its decrease in efficiency and makes difficulty if sand upgrade platform 9 is divided into 3 the tunnel.Fall mouthful 12 sands that fall of sand fall into the water once more, for making it not disperse, adopt similar rubber system or the plastic sand lid 13 of dashboard on automobile down, play protective action.
3. chain-bucket transport tape
The chain-bucket transport tape was installed on the bucket dredger originally, was known technology.Part as the special operation ship is very important.Different with known technology is that the chain bucket of apparatus of the present invention does not need to shovel native operation, so it is lighter to adopt steel sheet to make weight.Chain bucket 3-3 is the L type, and identical with fall mouthfuls 12 width of sand that shovel is got device 2.Shown in the 15th figure, chain bucket 3-3 adopts appropriate width (being 8 five equilibriums among the figure) to separate with dividing plate 3-12.Have aperture 3-14 in the situation that does not influence its intensity on the chain bucket 3-3 of the present invention, gapped 3-13 between the chain bucket as shown in figure 16, can enter between the deck funnel 4-1 draining as much as possible like this.
Deck funnel 4-1 is located at the front end that transmits with 4, on the supporting station that receives the sand place live axle 3-1 is housed, it be contained in the idler shaft 3-2 that shovel gets on the device 2 and be combined to form conveyer belt.Driving wheel 3-1 and idle pulley 3-2 slowly embed sprocket wheel 3-7, and (the 17th figure a) is contained in chain bucket thereon and makes it revolution (the 17th figure b) for sprocket shaft 3-5 and 3-6 combinations of roller chain rivet.Except that 3-1,3-2, there are 4 axles to make support accessory among Figure 18 in addition.Except that supporting sand weight, lower shaft is also as the installation shaft of lifting appliance 3-4.The supporting of the pivoting part of chain-bucket conveyer belt 3 is longeron 3-9 and crossbeam 3-10 and link 3-11 shown in the 17th figure, chain 6 moves on guide rail 3-8.
The chain bucket conveyer belt 3 that shovel is got device 2 and the installation of conveyer belt 4 two ends increases the inclined degree increase with the depth of water, considers the length of steel punt-pole 1-1 and the necessary depth of water in air route, so design head of the present invention is 15m.So the inclination of chain bucket conveyer belt 3 is defined as 45 °.So the present invention can not surpass the local operation of 1m in the depth of water, after 45 °, sand can fall from chain bucket 3-3, lowers efficiency.So punt-pole is long to be 45m.
Utilize shovel to get device 2, for successfully transporting the sand that shovel is got, transport capacity is decided by to load the size of sand chain bucket 3-3 and the speed of gyration of driving wheel.
Shovel native overall operation because very slow, other ship tractor tug 1 and barge 4 by the time, for making it not get device 2 and chain bucket conveyer belt 3 conflicts, the sign that floating on the water other ship can be noticed with shovel.Put the shiny red emergency warning lamp night, or blow a whistle at comprehensive pulpit 1-6, the accident that prevents takes place.
4. the conveyer belt barge 4
Conveyer belt is a lot of local application.This conveyer belt barge can be regarded the pontoon bridge that can finish vital task as, and the efficient area of sand is piled on the muck haulage ship.
In the row configuration in 3 minutes three of barge upper conveyor belt.At the front end of barge, be provided with 3 deck funnels 4-1, supporting station 4-28, also be provided with luffing crane 4-2 and hoist engine 4-4.
This scraper device is whole when mobile, can be drawn by tugboat, shovel is got device 2 and chain bucket conveyer belt 3 is promoted near the water surface.
Make shovel get device when operation begins and use 3-1 action of hoist engine 24 and chain bucket device for lifting up and down, slowly they are reduced to and contact, when operation begins, these are lifted steel wires unclamp with water-bed ground.
As previously mentioned, this barge 4 is provided with the binding steel wire 1-12 that links tractor tug 1 and tether bolt 4-19 in addition, draws by it.
As shown in figure 11, the deck funnel is as drainage plant.Although chain bucket 3 from water emersion after aerial, before sand falls into the deck funnel moisture major part overflow, further remove moisture for being loaded into before being with 4-5 at sand, be provided with except that water pond 4-20 and aperture 4-21 in the bottom of deck funnel.On deck 4-27, utilize motor 4-24 and pulsating pump 4-2, gutter 4-22 and suction water pipe 4-23 are discharged outboard with water.Conveyer belt 4-5 slides in order to prevent sand, adopts the structure of the band hangnail of rubber system, so can not draining.
Conveyer belt approximately is 15 ° of oblique angles and soil is sent moves on on the inclined bearing platform 4-6, and directly fall on the V-type band 4-7 as shown in Figure 2.The V-type band extends to the belly (central portion) of muck haulage ship always, and sand is transported by 3 row conveyer belts 4-5.4-15 by 4 driven by motor runnings.The V-type band by backing roll 4-5 supporting, move, near end face the time by conversion roller 4-16 with V-type complanation type belt.The flat pattern belt becomes the V-type band again by backing roll 4-18 supportings when it rotates back into the top once again.After the muck haulage ship of a side was filled, motor 4-17 sent commentaries on classics, and belt is loaded into opposite side to motion in the other direction with soil and adorns on the native ship.Adorning native operation so promptly can Halfway Stopping.The muck haulage ship is in loading process, and by " moving-stop " such shuttling movement of the steel wire 4-12,4-13 of port and starboard, the native sand that makes that muck haulage ship 5 is moved evenly loads.
Because it is electric more that this ship needs, so be provided with ultra-large type turbo-generator 4-8 on the quarter.Be provided with the warehouse in addition, the crewman chamber 4-9 that rests, repairing factory 4-10 etc.
5. muck haulage ship
The present invention can obtain following effect:
1. this ship can be by tractor tug 1 traction, and trip is draged on the sea.
2. can increase and decrease as required steel punt-pole number.
3. can a large amount of in a short time mobile sands.
4. can in bigger field, pile up the soil, bring into play its effectiveness and make ground.
5. can other ship navigation of overslaugh in operation
6. need not smooth water-bed ground after the operation.
Claims (1)
- Sand shovel in a kind of river bed is got device, it is characterized in that: this device by shovel get main body 7, be contained in the extra hard steel material that can change on the main body 7 teeth 6, sand upgrade platform 9, auxiliary cleaning shoe 10, regulate shoveling process scraper bowl lifting appliance 4-3, adjust that tooth 6 shovels are gone into the lifting appliance 1-11 of angle, wearing and tearing prevents platform 20 and prevent that the sand overburden 21 that sand overflows from forming; And tooth 6 is got main body 7 at shovel and is charged in the mud under recast, moves in the river bed under the traction of tractor tug, forces earth to move along upgrade platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118717 CN1123354A (en) | 1994-11-21 | 1994-11-21 | Apparatus for obtaining sands from bottom of river |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118717 CN1123354A (en) | 1994-11-21 | 1994-11-21 | Apparatus for obtaining sands from bottom of river |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1123354A true CN1123354A (en) | 1996-05-29 |
Family
ID=5038962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118717 Pending CN1123354A (en) | 1994-11-21 | 1994-11-21 | Apparatus for obtaining sands from bottom of river |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1123354A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864781A (en) * | 2010-06-02 | 2010-10-20 | 段玉祥 | Mining machine for dredging |
| CN101940093A (en) * | 2010-08-03 | 2011-01-12 | 中国农业大学 | Monitoring device for shoveled soil amount on level ground |
| CN101245589B (en) * | 2007-02-12 | 2011-05-25 | 湖南人文科技学院 | Method for harnessing river and reservoir with sand stirring boat and liftable low water head dam |
| CN105155654A (en) * | 2015-09-19 | 2015-12-16 | 应国珍 | Special drainage machine |
| CN110886337A (en) * | 2019-12-05 | 2020-03-17 | 中国科学院南京地理与湖泊研究所 | Equipment and process for removing lake bottom overwintering blue algae seed source |
-
1994
- 1994-11-21 CN CN 94118717 patent/CN1123354A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245589B (en) * | 2007-02-12 | 2011-05-25 | 湖南人文科技学院 | Method for harnessing river and reservoir with sand stirring boat and liftable low water head dam |
| CN101864781A (en) * | 2010-06-02 | 2010-10-20 | 段玉祥 | Mining machine for dredging |
| CN101940093A (en) * | 2010-08-03 | 2011-01-12 | 中国农业大学 | Monitoring device for shoveled soil amount on level ground |
| CN101940093B (en) * | 2010-08-03 | 2013-01-23 | 中国农业大学 | Monitoring device for shoveled soil amount on level ground |
| CN105155654A (en) * | 2015-09-19 | 2015-12-16 | 应国珍 | Special drainage machine |
| CN110886337A (en) * | 2019-12-05 | 2020-03-17 | 中国科学院南京地理与湖泊研究所 | Equipment and process for removing lake bottom overwintering blue algae seed source |
| CN110886337B (en) * | 2019-12-05 | 2020-10-02 | 中国科学院南京地理与湖泊研究所 | Equipment and process for removing lake bottom overwintering blue algae seed source |
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