CN210712788U - Water hyacinth fishing device - Google Patents
Water hyacinth fishing device Download PDFInfo
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- CN210712788U CN210712788U CN201921005331.9U CN201921005331U CN210712788U CN 210712788 U CN210712788 U CN 210712788U CN 201921005331 U CN201921005331 U CN 201921005331U CN 210712788 U CN210712788 U CN 210712788U
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Abstract
The utility model discloses a water hyacinth fishing device, belonging to the field of water area fishing, comprising a fishing body; the buoy is connected to the salvaging body; the salvaging body comprises a plurality of frameworks which are arranged in parallel; the end parts of the frameworks are sequentially connected with the transverse connecting ropes of the adjacent frameworks; a fishing net fixed on the framework and the transverse connecting rope; the skeletons at the two end parts of the salvaging body are both connected with pull ropes, the two ends of the skeleton at each end part are respectively connected with the two ends of the pull ropes, and the length of each pull rope is greater than that of each skeleton; the buoy is arranged on the framework; the utility model discloses salvage efficiently, occupation space is little, practices thrift the cost, easy operation, advantages such as green.
Description
Technical Field
The utility model belongs to the field is salvaged in the waters, especially, relate to a water hyacinth fishing device.
Background
The water hyacinth, also known as water hyacinth, is a floating aquatic plant, has both asexual and sexual reproduction functions, has strong population recovery and diffusion capability, and can be rapidly reproduced under proper conditions. The rapid propagation of the water hyacinth aggravates the intra-seed competition, can cause a large amount of water hyacinth to be rotten and dead, causes water eutrophication, further promotes the growth of the water hyacinth, and forms a vicious circle. Meanwhile, the dense water hyacinth blocks sunlight from penetrating through the water body and flowing of the water body, reduces the dissolved oxygen amount of the water body, consumes a large amount of dissolved oxygen when the water hyacinth grows, destroys the ecological balance of the water body, aggravates the breeding of germs and mosquitoes and flies, leads to further deterioration of the water body, and becomes one of the key links for treating black and odorous water bodies.
At present, the water hyacinth is mainly treated by the following methods: the method comprises the following steps of manual fishing, professional fishing vessel fishing, medicine removal, introduction of natural enemies and the like, but the treatment modes are limited by factors such as construction period, cost, working conditions, secondary hazards and the like, and the method has limitations. The manual fishing efficiency is low, the water hyacinth propagation capacity is extremely strong, the water hyacinth fishing operation is applicable to the water hyacinth fishing operation with a small area, and if the water hyacinth operation with a large area is manually fished, a large amount of manpower and auxiliary equipment need to be invested once, so that the cost is high. The special salvage ship has the advantages of high salvage efficiency, good effect, high salvage price and higher requirement on the operation space, is suitable for the basin which has larger basin area and deeper water depth and is convenient for equipment to enter and exit, has higher requirement on the operation field, and at least ensures that the equipment enters and exits. The removal of the medicine can affect the water quality, cause secondary pollution and aggravate the water pollution degree. The natural enemies are introduced to remove the water hyacinth according to the predation effect of organisms, such as the water hyacinth weevil, but the effect is slow, and the effect can be gradually achieved in 3-5 years generally.
Comparison table for conventional water hyacinth renovation scheme
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a salvage efficiently, occupation space is little, practices thrift the cost, easy operation, a water hyacinth fishing device of green.
The utility model provides a water hyacinth fishing device, which is characterized in that the fishing device comprises a fishing body; the buoy is connected to the salvaging body; the salvaging body comprises a plurality of frameworks which are arranged in parallel; the end parts of the frameworks are sequentially connected with the transverse connecting ropes of the adjacent frameworks; a fishing net fixed on the framework and the transverse connecting rope; the two ends of the pull rope are fixedly connected with the two ends of the end part framework respectively, and the length of the pull rope is greater than that of the framework; the buoy is arranged on the framework.
According to the technical scheme, the two ends of the fishing body and the middle part of the fishing body are parallel to the two ends, the end parts of adjacent frameworks are connected through the transverse connecting rope, and the transverse connecting rope between the adjacent frameworks and the fishing net wire are prevented from deforming due to overlarge gravity; the buoy is connected to the framework, and provides buoyancy for the framework when in use, so that the framework floats, and the water hyacinth is convenient to salvage; during the use, salvage the body under skeleton self gravity and cursory effect, the skeleton part on cursory upper portion stretches out the surface of water, and the skeleton part of cursory lower part changes over to the surface of water below, salvages the region that the body encloses and closes and separates into little construction region with the water hyacinth, reuses the stay cord that external force pulled salvage body both ends, can with salvage the water hyacinth in the body encloses and closes the region and pull from removing in the waters. The design has high fishing efficiency, saves cost, is simple to operate and is green and environment-friendly.
In the above technical solution, preferably, the framework adopts a telescopic structure, and mainly includes a first framework and a second framework, the pipe diameter of the first framework is smaller than the inner diameter of the second framework, and the first framework is slidably inserted into the second framework; a positioning bulge is arranged at the insertion end of the first framework; and a plurality of positioning clamping grooves corresponding to the positioning bulges are arranged on the second framework. The framework is convenient to mount, the occupied space is reduced, and the width can be adjusted; when the protruding joint in the positioning groove of second skeleton in the location of first skeleton, the rigidity of first skeleton and second skeleton, the relative displacement of first skeleton and second skeleton can not take place in the use to the skeleton. The design is convenient to adjust, saves cost and has high safety.
The positioning clamping grooves are provided with a plurality of positioning clamping grooves, and the interval between every two adjacent positioning clamping grooves on the second framework is 10 cm. Can adjust skeleton length according to different conditions, because several positioning groove equipartition is on the second skeleton, when the protruding joint in the positioning groove of needs length of location of first skeleton, the rigidity of first skeleton and second skeleton, the relative displacement of first skeleton and second skeleton can not take place for the skeleton in the use, like this, the longest length that the skeleton is adjustable is the overall length of first skeleton and second skeleton, and shortest length is the length of longer pipe in first skeleton and the second skeleton. The water hyacinth fishing device can adjust the length of the framework, is suitable for fishing environments with different water surfaces, has strong universality, is convenient to operate and high in reliability, reduces the equipment cost and reduces the occupied space.
The diameter of the first framework is 4cm, and the diameter of the second framework is 5 cm; the length of the first framework and the length of the second framework are both 50 cm. The requirement of the salvage depth of the water hyacinth is met, and the water hyacinth salvage device has universality.
In the above technical solution, preferably, the float is a spherical nano float. The spherical nano-buoy has strong bearing capacity, light weight and cost saving. The center of the buoy is provided with a through hole, the diameter of the through hole is the same as or slightly larger than the outer diameter of the second framework, and the buoy is arranged on the second framework in a penetrating mode. Convenient installation, even stress and the like. Each frame is provided with a buoy which provides larger buoyancy for the frame, so that the frame floats, and the water hyacinth is convenient to salvage.
In the above technical scheme, preferably, the fishing net thread of the fishing net is a 5mm polyethylene high-strength nylon rope. The fishing net line of the fishing net adopts a 5mm polyethylene high-strength nylon rope, the material has wide acquisition way and lower cost, and the experimental breaking strength is 430N and is far greater than the limit resistance born by the grid.
In the above technical solution, preferably, the mesh size of the fishing net is 20 × 20 cm. Because the length range of the water hyacinth blades is 4.5-14.5 cm, the width range is 5-114 cm, the fishing net can cover the water hyacinth blades by adopting the mesh size of 20 x 20cm, the dragging resistance of the fishing net can be increased because the water body can not flow due to the fact that the meshes can not be completely covered by the blade surface, and the problem that the water hyacinth penetrates through the meshes to reduce the fishing efficiency can be avoided.
The pull rope is a polyester nylon rope with the diameter of 28 mm. The weight of the water hyacinth is about 30kg per square meter, and the maximum friction force generated during the dragging process is about 29N (the water hyacinth is always in contact with the sludge). Restricted by the narrow condition of the construction site, the single dragging area is about 800m2 at most, and the maximum frictional resistance is about 23200N at this moment, so the dacron nylon rope with the diameter of 28mm is selected as the main rope, the experimental breaking strength is about 13200N, and the main ropes at the two ends can effectively share the frictional resistance, thereby ensuring the normal operation of construction.
To sum up, the utility model discloses salvage efficiently, practice thrift the cost, easy operation, green. First skeleton retractile second skeleton owing to adopt the sectional type design, the skeleton is convenient for install, has reduced occupation space, and the length of skeleton can be adjusted, adapts to the environment of salvaging of different surfaces of water, has stronger commonality, convenient operation, and the reliability is high, has reduced equipment cost. The spherical nano-buoy has strong bearing capacity, light weight and cost saving. The diameter of the through hole of the buoy is the outer diameter of the second framework, the buoy can be installed on the second framework, and meanwhile, the up-down adjustment is facilitated. The fishing net line of the fishing net adopts a 5mm polyethylene high-strength nylon rope, the material has wide acquisition way and lower cost, and the experimental breaking strength is 430N and is far greater than the limit resistance born by the grid. Because the length range of the water hyacinth blades is 4.5-14.5 cm, the width range is 5-114 cm, the fishing net can cover the water hyacinth blades by adopting the mesh size of 20 x 20cm, the dragging resistance of the fishing net can be increased because the water body can not flow due to the fact that the meshes can not be completely covered by the blade surface, and the problem that the water hyacinth penetrates through the meshes to reduce the fishing efficiency can be avoided.
Drawings
Fig. 1 is a schematic structural view of a water hyacinth fishing device provided by the embodiment of the invention;
FIG. 2 is a schematic view of the skeletal assembly of FIG. 1;
fig. 3 is a schematic structural view of the float of fig. 1.
In the figure: 1. salvaging the body; 2. floating; 3. a framework; 4. a transverse connecting rope; 5. a fishing net; 6. pulling a rope; 7. a first skeleton; 8. a second skeleton; 9. positioning the projection; 10. positioning the clamping groove; 11. and a through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model discloses a water hyacinth fishing device and water hyacinth fishing method salvage efficiently, occupation space is little, practices thrift the cost, easy operation, green for further explain the utility model discloses, combine the drawing to carry out the detailed explanation as follows:
the utility model provides a water hyacinth fishing device, which is characterized in that the fishing device comprises a fishing body 1; the buoy 2 is connected to the salvaging body 1; the salvaging body 1 comprises a plurality of frameworks 3 which are arranged in parallel; the end parts of the frameworks are sequentially connected with the transverse connecting ropes 4 of the adjacent frameworks 3; a fishing net 5 fixed on the framework 3 and the transverse connecting rope 4; the frameworks 3 at the two ends of the salvaging body 1 are both connected with pull ropes 6, the two ends of each pull rope 6 are respectively and fixedly connected with the two ends of the end framework 3, and the length of each pull rope 6 is greater than that of each framework 3; the buoy 2 is arranged on the framework 3.
As shown in fig. 1, in the technical scheme, a plurality of frameworks 3 are arranged at two ends of a salvaging body 1 and in the middle of the salvaging body 1 in parallel to the two ends, and the end parts of adjacent frameworks 3 are connected through a transverse connecting rope 4, so that the transverse connecting rope 4 between the adjacent frameworks 3 and a fishing net line are prevented from being deformed due to overlarge gravity; the buoy 2 is connected to the framework 3, and when the buoy is used, the buoy 2 provides buoyancy for the framework 3 to enable the framework 3 to float, so that the water hyacinth is convenient to salvage; during the use, salvage body 1 under 3 self gravity of skeleton and cursory effect, the skeleton part on cursory 2 upper portion stretches out the surface of water, and the skeleton part of cursory 2 lower part changes over to the surface of water below, salvages the region that body 1 encloses and closes and separates into little construction region with the water hyacinth, uses external force again to pull the stay cord 6 of salvaging body 1 both ends, can with salvage the water hyacinth in body 1 encloses and closes the region and pull from removing in the waters. Wherein, the transverse connecting rope 4 can adopt the transverse connecting rope 4 commonly used in the field, such as connecting rope, etc.; the water hyacinth fishing device can surround 600 to 800 square meters in a water surface area by one-time net spreading. The design has high fishing efficiency, saves cost, is simple to operate and is green and environment-friendly.
In the above technical solution, preferably, the framework 3 adopts a telescopic structure, and mainly includes a first framework 7 and a second framework 8, the pipe diameter of the first framework 7 is smaller than the inner diameter of the second framework 8, and the first framework 7 is slidably inserted into the second framework 8; a positioning bulge 9 is arranged at the insertion end of the first framework 7; and a plurality of positioning clamping grooves 10 corresponding to the positioning protrusions 9 are arranged on the second framework 8.
As shown in fig. 2, the first framework 7 and the second framework 8 are designed in a telescopic manner, so that the framework 3 is convenient to mount, and the occupied space is reduced; when the protruding 9 joints in the positioning groove 10 of second skeleton 8 of location of first skeleton 7, the rigidity of first skeleton 7 and second skeleton 8, the relative displacement of first skeleton 7 and second skeleton 8 can not take place in the use for skeleton 3, wherein, location protruding 9 can adopt setting elements such as spring catch. The design is convenient to adjust, saves cost and has high safety.
As shown in fig. 2, a plurality of positioning slots 10 are provided, and the interval between adjacent positioning slots 10 on the second framework 8 is 10 cm. Can adjust skeleton 3 length according to different conditions, because several positioning groove 10 equipartitions are on second skeleton 8, when the protruding 9 joints in the positioning groove 10 of needs length of location of first skeleton 7, the rigidity of first skeleton 7 and second skeleton 8, skeleton 3 can not take place the relative displacement of first skeleton 7 and second skeleton 8 in the use, like this, the longest length that skeleton 3 is adjustable is the total length of first skeleton 7 and second skeleton 8, and the shortest length is the length of longer pipe in first skeleton 7 and the second skeleton 8. The water hyacinth fishing device can adjust the length of the framework 3, is suitable for fishing environments with different water surfaces, has strong universality, is convenient to operate and high in reliability, and reduces equipment cost.
In the above technical scheme, preferably, the lengths of the first framework 7 and the second framework 8 are both 50cm, the longest length of the framework 3 which can be adjusted is 1m, the shortest length is 50cm, the requirement of the fishing depth of the water hyacinth is met, and the water hyacinth fishing depth control device has universality.
In the above technical solution, preferably, the float 2 is a spherical nano float 2; the spherical nanometer buoy 2 has strong bearing capacity, light weight and cost saving.
In the above technical solution, preferably, as shown in fig. 3, a through hole 11 is provided in the center of the float 2, the diameter of the through hole 11 is the same as or slightly larger than the outer diameter of the second framework 8, and the float 2 is mounted on the second framework 8 in a penetrating manner. Convenient installation, even stress and the like. Each frame is provided with a buoy which provides larger buoyancy for the frame, so that the frame floats, and the water hyacinth is convenient to salvage.
In the above technical solution, preferably, each framework 3 is provided with a float 2. As shown in fig. 1, each framework 3 is provided with a buoy 2, and the buoys 2 provide larger buoyancy for the frameworks 3, so that the frameworks 3 float, and the water hyacinth can be conveniently salvaged.
In the above technical scheme, preferably, the fishing net thread of the fishing net 5 is a 5mm polyethylene high-strength nylon rope.
The fishing net line of the fishing net 5 adopts a 5mm polyethylene high-strength nylon rope, the material has wide acquisition way and lower cost, and the experimental breaking strength is 430N and is far greater than the limit resistance born by the grids.
In the above technical solution, preferably, the mesh size of the fishing net 5 is 20 × 20 cm. Because the length range of the water hyacinth blades is 4.5-14.5 cm, the width range is 5-114 cm, the fishing net 5 adopts the grid size of 20 x 20cm to cover the water hyacinth blades, the dragging resistance of the fishing net 5 can be increased because the water body can not flow due to the fact that the net cannot be completely covered by the blade surface, and the problem that the water hyacinth penetrates through the grid to reduce the fishing efficiency can be avoided.
The pull rope is a polyester nylon rope with the diameter of 28 mm.
The utility model also provides a water hyacinth salvage method adopting the water hyacinth salvage device, which comprises the following steps,
A. measuring the average height of the water hyacinth in the construction area and the proportion of the water hyacinth on the water surface and the water surface, and taking the measurement result as the standard for adjusting the height of the framework and determining the fixed position of the buoy;
B. assembling a water hyacinth fishing device;
C. the water hyacinth fishing device is manually released by a kayak to enclose the water hyacinth, and pull ropes at two ends are respectively tied on the two land and water excavators;
D. and (3) collecting the net by the water hyacinth fishing device: the two land and water excavators drag the water hyacinth fishing devices in the same direction, and the net pockets of the water hyacinth fishing devices form an arc-shaped enclosure ring to divide the water hyacinth in the enclosure;
E. carrying: and the two land and water excavators drag the water hyacinth to the shore, salvage the water hyacinth to the shore and transport the water hyacinth to a designated place.
In the technical scheme, in the step A and the step B, the positions of the framework 3 and the float 2 are adjusted according to the characteristics of water hyacinth in different water areas by measurement before fishing so as to achieve the optimal fishing effect; in the step C, the water hyacinth is enclosed by adopting a manual net placing mode of a kayak, a machine net scattering mode and the like; in the step D, in the process of dragging the water hyacinth fishing device, the uniform speed can be kept, the overflow amount of the water hyacinth is reduced, and the overflowed and omitted water hyacinth can be manually fished and cleaned; and E, transporting the salvaged and accumulated water hyacinth outward in time, so that the water hyacinth can be prevented from propagating and spreading again.
The working principle is as follows: utilize kayak or the artifical water hyacinth fishing device that spills of machine cooperation to the surface of water, it stretches out the surface of water to salvage 1 upper end under the buoyancy effect of cursory 2, salvage body 1 under 3 self gravity of skeleton and cursory effect, the skeleton part on cursory 2 upper portion stretches out the surface of water, the skeleton part of cursory 2 lower part changes over into the surface of water below, thereby water hyacinth fishing device separates into little construction region with the water hyacinth of the surface of water, it separates into little construction region to salvage the region that body 1 encloses, reuse external force pulls the stay cord 6 of salvaging body 1 both ends, can drag the water hyacinth in salvaging body 1 encloses the region and leave from the waters and remove, then concentrate the clearance ashore with the excavator, divide batch to concentrate and transport to handling the place. The framework 3 comprises a first framework 7 and a second framework 8, the first framework 7 is slidably mounted on the second framework 8, and a sectional design is adopted, so that the framework 3 is convenient to mount, and the occupied space is reduced; be equipped with several positioning groove 10 on the second skeleton 8, the total length of regulation skeleton 3 in the protruding 9 position of joint positioning groove 10 on second skeleton 8 of location that the accessible was adjusted first skeleton 7, adapts to the environment of salvaging of different surfaces of water, has stronger commonality, convenient operation, and the reliability is high, has reduced equipment cost. The buoy 2 is arranged on the second framework 8, so that the adjustment is convenient, the buoy 2 can adopt a spherical nano buoy, the bearing capacity is strong, and the cost is saved.
Example (b): a certain lake is positioned in a residential area of a certain city, the total area is 58465 square meters, and the water eutrophication is caused by the influence of domestic sewage drainage in surrounding areas, so that the water hyacinth is promoted to be propagated in large quantities, the coverage area of the lake accounts for about 80 percent of the area of the lake, and the area of the water hyacinth is 42000 square meters. The water body is slightly black and odorous, the water quality rating of inferior V class is poor, and the whole water quality is poor.
Adopt the technical scheme of the utility model, receive the restriction of construction site narrow condition, the single salvages about 800m of area2The stress of the fishing net is shared by nearly 900 small grids, and the maximum drag resistance borne by a single grid is about 26N. Because every square meter of water hyacinth weight is about 30kg, and the water hyacinth friction is the biggest when contacting silt all the time, and the 30kg water hyacinth maximum friction is about 29N, salvages about 23200N of body 1 maximum frictional resistance, and at this moment, the dacron nylon rope of diameter 28mm is selected to the stay cord, and the dacron nylon rope experiment of this diameter breaks the powerful 13200N of being about, and the stay cord of salvage body 1 both ends can bear the frictional resistance of fishing net, has ensured the normal clear of construction. First skeleton 7 adopts the diameter to be 4 cm's steel pipe, and second skeleton 8 adopts the diameter to be 5 cm's steel pipe, but first skeleton telescopic income second skeleton, and single skeleton weight is about 43N, and occupation space is little, and the quality is lighter. The second skeleton can use 10cm to set up positioning groove 10 as the interval, but first skeleton and second skeleton form the extending structure who uses 10cm as the gear. The buoy 2 is a spherical nanometer buoy with the outer diameter of 12cm, a circular through hole is formed in the buoy, the maximum buoyancy can be provided to be 66N, and the buoy can be conveniently installed on the second framework.
The traditional water hyacinth salvage unit price per square meter is about 100 yuan, and after the technology is adopted, 3 nets can be salvaged every day, 2100 square meters can be salvaged, two land and water excavators, one canoe and a simple fishing net salvage device are put into use, 5 workers and a plurality of transport vehicles are used, and the unit price per square meter is about 25 yuan. The water hyacinth in the lake is salvaged by adopting the technology, so that the cost is saved by 315 ten thousand in total.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A water hyacinth fishing device is characterized by comprising a fishing body (1); a float (2) connected to the fishing body (1); the salvaging body (1) comprises a plurality of frameworks (3) which are arranged in parallel; the end parts of the frameworks are sequentially connected with the transverse connecting ropes (4) of the adjacent frameworks (3); a fishing net (5) fixed on the framework (3) and the transverse connecting rope (4); the framework (3) at the two ends of the salvaging body (1) are both connected with a pull rope (6), the two ends of the pull rope (6) are respectively and fixedly connected with the two ends of the framework (3) at the end part, and the length of the pull rope (6) is greater than that of the framework (3); the buoy (2) is arranged on the framework (3).
2. The water hyacinth fishing device according to claim 1, wherein the framework (3) adopts a telescopic structure and mainly comprises a first framework (7) and a second framework (8), the pipe diameter of the first framework (7) is smaller than the inner diameter of the second framework (8), and the first framework (7) is slidably inserted into the second framework (8); a positioning bulge (9) is arranged at the insertion end of the first framework (7); and a plurality of positioning clamping grooves (10) corresponding to the positioning protrusions (9) are arranged on the second framework (8).
3. A water hyacinth fishing device as claimed in claim 2, wherein the interval between adjacent positioning slots (10) on the second framework (8) is 10 cm.
4. A water hyacinth fishing device as claimed in claim 3, wherein the first cage (7) has a diameter of 4cm and the second cage (8) has a diameter of 5 cm; the lengths of the first framework (7) and the second framework (8) are both 50 cm.
5. A water hyacinth fishing gear according to claim 2, characterized in that the buoy (2) is a spherical nano buoy (2); the center of the buoy (2) is provided with a through hole (11), the diameter of the through hole (11) is the same as or slightly larger than the outer diameter of the second framework (8), and the buoy (2) is arranged on the second framework (8) in a penetrating mode.
6. A water hyacinth fishing device as claimed in claim 1, wherein each framework (3) is provided with a float (2).
7. A water hyacinth fishing device as defined in claim 1, wherein the fishing net line of the fishing net (5) is made of polyethylene high-strength nylon rope with a diameter of 5 mm.
8. A water hyacinth fishing device as in claim 1, wherein the mesh size of the fishing net (5) is 20 x 20 cm.
9. The water hyacinth fishing device of claim 1, wherein the pulling rope is a polyester nylon rope with a diameter of 28 mm.
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| CN201921005331.9U CN210712788U (en) | 2019-06-28 | 2019-06-28 | Water hyacinth fishing device |
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| CN201921005331.9U CN210712788U (en) | 2019-06-28 | 2019-06-28 | Water hyacinth fishing device |
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| CN210712788U true CN210712788U (en) | 2020-06-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258485A (en) * | 2019-06-28 | 2019-09-20 | 中交天航港湾建设工程有限公司 | A kind of fishing gear of hyacinth and its water hyacinth Refloatation method |
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2019
- 2019-06-28 CN CN201921005331.9U patent/CN210712788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258485A (en) * | 2019-06-28 | 2019-09-20 | 中交天航港湾建设工程有限公司 | A kind of fishing gear of hyacinth and its water hyacinth Refloatation method |
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