CN108496904A - River mouth subtidal zone biological monitoring net and its building method - Google Patents
River mouth subtidal zone biological monitoring net and its building method Download PDFInfo
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- CN108496904A CN108496904A CN201810599339.6A CN201810599339A CN108496904A CN 108496904 A CN108496904 A CN 108496904A CN 201810599339 A CN201810599339 A CN 201810599339A CN 108496904 A CN108496904 A CN 108496904A
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- net
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K80/00—Harvesting oysters, mussels, sponges or the like
Abstract
The present invention relates to a kind of river mouth subtidal zone biological monitoring net, leader is made of etting and steel pipe, and etting upper end is furnished with float, lower end is furnished with sinker, and leader point row both sides are arranged in eight words, it is divided to two sections of straight line settings per side leader, the angle with flood tide or the water (flow) direction of ebb tide is respectively 30 ° and 15 °；Body net is divided into the side etting of front and two parts of combination funnel structure at rear portion, side etting is connect with leader, combination funnel structure is composed of at least two monomer funnel structure setting up and down, monomer funnel structure fluoran stream surface is rectangular entrance, it gradually narrows backward, is in a round exit at rear portion；Fish gathering monitoring case is in its fluoran stream surface setting connected round entrance corresponding with the round exit of body net；Leader, body net, fish gathering monitoring case are immersed in the bottom always.The present invention adapt to river mouth subtidal zone be uneven, rugged operating environment, hauling speed is fast；Many advantages, such as with fish is not hindered.
Description
Technical field
The present invention relates to a kind of biological monitoring nets, are a kind of river mouth subtidal zone biological monitoring nets specifically.
Background technology
In the prior art, for the biological monitoring of river mouth subtidal zone, since river mouth subtidal zone operating environment is uneven, cheats
The fishing of hollow low-lying area is difficult, and existing monitoring net hauling speed is slower, more serious to the damage of aquatile especially mandarin sturgeon,
It is also poor for the versatility of different layers deepwater field.In addition, anti-escape measure also has deficiency, mobile performance weaker.
Invention content
The object of the present invention is to provide a kind of river mouth subtidal zone biological monitoring net, adapt to river mouth be uneven towards lower band,
Rugged operating environment can reach best hauling speed in the defined time, have many advantages, such as not hindering fish,
And the brackish water fish in waters at all levels can be caught；In the case where not destroying local ecological resources, living resources prison is completed
Survey task.
The present invention takes following technical scheme：
A kind of river mouth subtidal zone biological monitoring net, including be sequentially connected from front to back fence net, body net, fish gathering monitoring case；
The leader is made of etting and steel pipe, and etting upper end is furnished with float, and lower end is furnished with sinker, and leader point row both sides are set in eight words
It sets, is divided into two sections of straight lines per side leader, the angle with flood tide or the water (flow) direction of ebb tide is respectively 30 ° and 15 °；Bottom etting is tight
Paste mud bottom；The body net is divided into the side etting of front and two parts of combination funnel structure at rear portion, the side etting with
Leader connects, and the combination funnel structure is composed of at least two monomer funnel structure setting up and down, monomer funnel structure
Outside is supported by rigid frame, and fluoran stream surface is rectangular entrance, is gradually narrowed backward, is in a round exit at rear portion；The collection
Fish monitoring case is in cuboid cage structure, in its fluoran stream surface setting connected round entrance corresponding with the round exit of body net；Net
Wall, body net, fish gathering monitoring case are immersed in the bottom always.
Further, babinet is formed by 3.0m × 3.0m piling steel pipes when fish gathering monitoring case is laid, and hangs fixed etting.
Further, when leader is laid, fence net etting is fixed with steel pipe along fence net direction every 10m；The front two of body net
A steel pipe is fixed every 10.0m piling along body net direction when side etting is laid, for hanging and fixing fence net.
Further, the fence net unilateral side mesh sheet sheepshank size is 120.0m × 10.0m, and horizontal hanging ratio takes in assembly
0.707, mesh size 3.0cm, etting use the materials of PE42tex6 × 3, and etting, which must be equipped with enough floats, makes headline float
In the water surface, bottom, which is equipped with enough sinkers, makes infraclass sink to the bottom, and upper infraclass uses the rope of PE Ф 3cm；It can be divided into 2 per side wall net
Section, length are followed successively by 90m and 30m, form the fence net setting area of width 111.6m long 109.0m；Fence net setting is steep after first delaying, profit
Enter body net in induction individual, linearly, promotes intensity, fence net long 120m, high 10m.
Further, the netting hanging size of the body net is 26.0m × 10.0m, and horizontal hanging ratio takes in assembly
0.707, mesh size 3.0cm, etting use the materials of PE42tex6 × 3；The combination funnel structure at rear portion is by 3 monomer infundibular ganglions
Structure is composed up and down；It is supported by rigid frame outside monomer funnel structure, the size of outer framework is width 3.0m, high 3.3m, length
6.0m, stainless steel welded prefabricated using diameter Ф 2cm, funnel is the rectangular entrances of 3.0m × 3.3m in its fluoran stream surface, in rear portion system
Make the round exit of a diameter 1.0m；The leakage of assembly production monomer funnel structure after being tensed using the mesh sheet of size of mesh 2.0cm
Struggle against net, and etting uses the materials of PE42tex6 × 3.
Further, the net cage frame scale of the fish gathering monitoring case is long 3.0m, width 3.0m, high 10.0m；Fish gathering monitors
Case etting selection PE42tex8 × 3, mesh size 2.0cm, horizontal hanging ratio takes 0.707 in assembly；In fluoran stream surface, the bottom of from
The entrance that sheepshank size is diameter 1.0m is arranged in the position 1.0m, 4.3m and 7.6m, and corresponding with body net funnel structure outlet
Opening is connected.
A kind of building method of river mouth subtidal zone biological monitoring net, includes the following steps：A fence net) is constructed：Unilateral mesh sheet contracting
Knot size is 120.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, and mesh size 3.0cm, etting uses
The materials of PE42tex6 × 3, etting must be equipped with enough floats and ensure that headline floats on the water surface, and bottom is equipped with enough sinkers and protects
Card infraclass is sunk to the bottom, and upper infraclass uses the rope of PE Ф 3cm, and fence net extends from shallow water to deep water to be laid, and the fence net of both sides is in " eight "
Font is arranged, and can be divided into two sections per side wall net when setting, and length is followed successively by 90m and 30m, distinguishes with the angle of tidewater water (flow) direction
For 30 ° and 15 °, width 111.6m, long 109.0m fence nets setting area are formed, when laying is fixed along fence net direction every 10m steel pipes
Fence net etting, so that induction individual enters body net, fence net long 120m, high 10m；B body net) is constructed：Side etting is arranged in front
Structure, netting hanging size are 26.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, mesh size 3.0cm, etting
Using the materials of PE42tex6 × 3；The combination funnel structure of rear portion setting is formed by stack combinations above and below 3 monomer funnel structures；
It is supported by rigid frame outside monomer funnel structure, the size of outer framework is width 3.0m, high 3.3m, long 6.0m, uses diameter Ф
2cm is stainless steel welded prefabricated, and funnel is the rectangular entrances of 3.0m × 3.3m in its fluoran stream surface, and the circle of a diameter 1.0m is made at rear portion
Shape exports；Assembly production Criny after being tensed using the mesh sheet of size of mesh 2.0cm, etting use the materials of PE42tex6 × 3；Body
A steel pipe is fixed every 10.0m piling along body net direction when the front part sides etting of net is laid, for hanging and fixing fence net,
Body net is set as 6.0m with fence net junction width, and is gradually narrowed along body net, until Criny front is contracted to 3.0m width,
The sides the 6.0m net at body net rear portion is not shunk；C fish gathering monitoring case) is constructed：Fish gathering monitoring case is cuboid net cage, net cage frame ruler
Degree is long 3.0m, width 3.0m, high 10.0m；Fish gathering monitoring case etting selection PE42tex8 × 3, mesh size 2.0cm, in assembly
Horizontal hanging ratio takes 0.707, in fluoran stream surface, the entrance for being 1.0m from the bottom position 1.0m, 4.3m and 7.6m setting sheepshank size.
The beneficial effects of the present invention are：
1) to be conducive to aquatile using rigid frame funnel structure smooth, not damaged by body net, mitigates to sampling
The injury of body；
It 2) can be empty to provide fixed and enough activity into the individual of net cage using the fish gathering of rigid frame monitoring net cage
Between, it ensures the later survival of aquatile cartonning, mitigates the injury to sampling individual；
1) all individuals into body net are led into fish gathering monitoring case by combination funnel web frame, and can entry deterrence collection
The individual of fish monitoring case returns to escape.
2) fish gathering monitoring case is uncovered cuboid net cage, entrance is corresponding with body net funnel structure outlet be open it is connected with
Just aquatile can enter monitoring case.
3) adapt to river mouth be uneven towards lower band, rugged operating environment, can reach in the defined time
Best hauling speed；
4) fish gathering monitoring case etting can be removed at any time or opens fish gathering monitoring case etting, ensure sampling net in non-sampling date
Between do not influence passing through for aquatile；5) and the brackish water fish in waters at all levels can be caught；
6) in the case where not destroying local ecological resources, living resources is completed and monitor task.
Description of the drawings
Fig. 1 is the horizontal layout schematic diagram of subtidal zone biological monitoring net in river mouth of the present invention.
Fig. 2 is the side elevation schematic diagram of fence net.
Fig. 3 is the dismantling schematic diagram of body net and fish gathering monitoring net.
Fig. 4 is the front schematic view of monomer funnel structure.
In figure, A. fence nets, B. body nets, C. fish gathering monitoring nets, A1. steel pipes, A2. floating balls, A3. ettings, A4. sinkers, the bottoms A5.
Mud.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and specific examples.
The present invention is based on being formed on the basis of a series of monitorings and experimental work carried out in entrance of Changjiang River Hekou Area, apply
People have developed it is a kind of meet the mutatis mutandis condition of fishing gear, be suitble to entrance of Changjiang River environment, acquire living body biological protection of resources type monitoring it is special
Net.
River mouth subtidal zone biological monitoring net principle：
River mouth subtidal zone biological monitoring net is made of 3 fence net, body net and fish gathering monitoring case parts, 3 part connection shapes
At entire netting gear.Wherein fence net is preceding, and body net is in, and fish gathering monitoring case is rear.Fence net is inducing moiety, and fence net is from shallow water to depth
Water extends laying, and the fence net of 2 sides is arranged in "eight" shape, and unilateral mesh sheet sheepshank size is 120.0m × 10.0m, horizontal in assembly
Hanging ratio takes 0.707, and mesh size 3.0cm, etting uses the materials of PE42tex6 × 3.Enough floats are equipped on etting to protect
Card headline floats on the water surface, and bottom is equipped with enough sinkers and ensures that infraclass is sunk to the bottom, and upper infraclass uses the rope of PE Ф 3cm.Body
The effect of net mainly guides individual to step into fish gathering monitoring case.It is divided into side etting and the combination at rear portion of front in structure
2 parts of funnel structure.It can be considered the continuity of fence net, the selection of unilateral etting and mounting means in the side etting structure of front
Consistent with fence net, netting hanging size is 26.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, mesh size
3.0cm, etting use the materials of PE42tex6 × 3.The Criny at rear portion, which plays, leads into all individuals into body net
Fish gathering monitoring case, and the individual of energy entry deterrence fish gathering monitoring case returns to escape.Fish gathering monitoring case is uncovered cuboid net cage, is entered
Mouth opening corresponding with body net funnel structure outlet is connected so that aquatile can enter monitoring case.
Referring to Fig. 1-4, the processing and treating method of river mouth subtidal zone biological monitoring net：
River mouth subtidal zone biological monitoring net is made of 3 fence net, body net and fish gathering monitoring case parts.Wherein fence net, it is unilateral
Mesh sheet sheepshank size is 120.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, and mesh size 3.0cm, etting uses
The materials of PE42tex6 × 3, etting are equipped with enough floats and ensure that headline floats on the water surface, and bottom is equipped with enough sinkers and ensures
Infraclass is sunk to the bottom, and upper infraclass uses the rope of PE Ф 3cm, the fence net of 2 sides to be arranged in "eight" shape.It can be divided into per side wall net when setting
2 sections, length is followed successively by 90m and 30m, with rise/angle of ebb tide water (flow) direction is respectively 30 ° and 15 °, formed 111.6m ×
109.0m fence nets setting area.When laying fence net etting, fence net long 120m, high 10m are fixed every 10m steel pipes along fence net direction；
Wherein body net can be considered the continuity of fence net, the selection of unilateral etting and mounting means and fence net in the side etting structure of front
Unanimously, netting hanging size is 26.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, mesh size 3.0cm, etting
Using the materials of PE42tex6 × 3.The funnel structure at rear portion is composed of 3 monomer funnel structures.Outside single funnel structure
It is supported by rigid frame, the size of outer framework is 3.0m × 3.3m × 6.0m, leakage stainless steel welded prefabricated using diameter Ф 2cm
Bucket is the rectangular entrances of 3.0m × 3.3m in its fluoran stream surface, and the round exit of a diameter 1.0m is made at rear portion.Use size of mesh
Assembly production Criny after the mesh sheet of 2.0cm tenses, etting use the materials of PE42tex6 × 3.The 2 side etting of front of body net is laid
When along body net direction fix a steel pipe every 10.0m piling, for hanging and fixing fence net, body net and fence net junction width
It is set as 6.0m, and is gradually narrowed along body net, until Criny front is contracted to 3.0m width, the sides the 6.0m net at body net rear portion is not
It shrinks；Wherein fish gathering monitoring case, is uncovered cuboid net cage, net cage frame drawingdimension be 3.0m × 3.0m ×
10.0m.Monitoring case etting selection PE42tex8 × 3, mesh size 2.0cm, horizontal hanging ratio takes 0.707 (square mesh in assembly
Using).In fluoran stream surface, the entrance that sheepshank size is 1.0m is installed from bottom 1.0m, 4.3m and 7.6m equipotential.On the inside of monitoring case
Criny export top, it is each a chip size be installed be more than outlet size cover mesh sheet.
The installation of netting gear：
Installation makes in advance on the coast for the making of frame, iron anchor, iron chains, monitoring case etc..Anchor line and monitoring case connecting rope
Can be customized in producer according to design specification, anchor line can be connected thereto before iron anchor transports when marine integrated installation.
Sinker is connect with floating ball with rope on auxiliary canoe, the length of connecting rope is close with the depth of water at anchor dispensing, throws
Lower sinker is as combination net cage anchor position point.The layout and anchor position spacing that mooring system is fixed according to net cage, are repeated in the above step
Suddenly, anchor position point of 18 sinkers as combination monitoring case is launched in order.According to positioning floating ball position and 18 anchor position points on the water surface
Position coordinates are corrected, and make floating ball in the equal marshalling of vertical, horizontal.It can will finally position position, that is, conduct of the floating ball in the water surface
Throw reference placement position when anchor.
Iron anchor weight is 0.5 ton, selects hoisting weight to hang an iron anchor every time for 5 tons or more loop wheel machines, iron anchor
It sinks into water.It should select to flow combined pressure difference direction installation exercise with the wind, system installation is fixed in selection downwind when slack tide
Operation, in fair current to installation exercise when windage is little.It is dragged in the region of fixed system with installation ship by cabinet frame is monitored,
Net cage frame is fixed with anchor line, and is hauled.After fixed system installs, according to frame in the state of the water surface, pass through anchor
The elastic of chain is adjusted, and keeps it no neat in water surface distribution.
According to entrance of Changjiang River landform and hydrologic regime, river mouth subtidal zone biological monitoring net is laid along Yangtze River channel, two groups of fence nets
It is respectively facing upstream and downstream, is on the whole east-west direction, disclosure satisfy that the monitoring of fluctuation damp phase.Fence net is from shallow water to depth
Water extends laying, and the fence net of 2 sides is arranged in "eight" shape.In order to ensure the attracting effect of fence net, when setting, can divide per side wall net
Be 2 sections, length is followed successively by 90m and 30m, with rise/angle of ebb tide water (flow) direction is respectively 30 ° and 15 °, form width 11.6m, length
9.0m fence nets setting area.Fence net setting is steep after first delaying, so that induction individual enters body net.The 2 side etting cloth of front of body net
If when along body net direction every 10.0m piling fix a steel pipe, for hanging and fixing fence net, body net and fence net junction are wide
Degree is set as 6.0m, and is gradually narrowed along body net：30.m is shunk along 20.0m, until Criny front is contracted to 3.0m width, body
The sides the 6.0m net at net rear portion is not shunk.Body net rear portion length be the regions 6.0m in, it is depending on the specific depth of water that 3 funnels are vertical
Arrangement is installed on body net final stage, and 2 side of entrance of fluoran stream surface is supervised uniformly around side etting, aft exit is sewn in fish gathering
The entrance being accordingly arranged on measuring tank fluoran stream surface is connected；Such Criny is played leads into collection by all individuals into body net
Fish monitoring case, and the individual of energy entry deterrence fish gathering monitoring case returns to escape.The etting of fish gathering monitoring case side is arranged and fence net
It is identical with body net side net etting setting method, babinet is formed by 3.0m × 3.0m piling steel pipes when laying, and hangs fixed etting.
This netting gear is suitble to entrance of Changjiang River Special Geographic natural environment, combines the widely used networking in entrance of Changjiang River, throws the net and insert
The advantages of fishing style of net, can utilize tidal action and flow action to capture various aquatiles.Estuarine organism monitoring net
Minimum mesh be 2.0cm, it is more enough to monitor mandarin sturgeon children sturgeon, while the injuries such as will not cause death to other young fishs.
River mouth subtidal zone biological monitoring net will not destroy local ecological resources, nothing pollution-free to natural ecological environment while monitoring
It destroys.It will not cause escaping and missing for fish, greatly protect with good induction and fish-gathering effect, network interface reasonable design
The accuracy of monitoring result is demonstrate,proved.Its in the future protection of resources and ecosystem monitoring play the role of great, be conducive to
The development of Monitoring of Resource and Environment in the future.
According to the method for the present invention, applicant carries out and completes the inside proof test of netting gear.It is good that installation effect is launched at scene
Good, netting gear working condition is normal.It is demonstrated experimentally that this netting gear can be suitable for Hekou Area waters, monitoring object can be played
The effect concentrated is induced, can achieve the effect that monitoring resource in the case where not destroying living resources.
It is the preferred embodiment of the present invention above, those of ordinary skill in the art can also carry out various changes on this basis
It changes or improves, under the premise of not departing from the present invention total design, this transformation or improvement should all belong to that the present invention claims guarantors
Within the scope of shield.
Claims (7)
1. a kind of river mouth subtidal zone biological monitoring net, it is characterised in that：
Including the fence net, body net, fish gathering monitoring case being sequentially connected from front to back；
The leader is made of etting and steel pipe, and etting upper end is furnished with float, and lower end is furnished with sinker, and leader point row both sides, are in eight
Word is arranged, and is divided into two sections of straight lines per side leader, the angle with flood tide or the water (flow) direction of ebb tide is respectively 30 ° and 15 °；Bottom web
Clothing is close to mud bottom；
The body net is divided into the side etting of front and two parts of combination funnel structure at rear portion, the side etting and leader
Connection, the combination funnel structure is composed of at least two monomer funnel structure setting up and down, outside monomer funnel structure
It is supported by rigid frame, fluoran stream surface is rectangular entrance, is gradually narrowed backward, is in a round exit at rear portion；
The fish gathering monitoring case is in cuboid cage structure, in its fluoran stream surface setting connected circle corresponding with the round exit of body net
Shape entrance；
Leader, body net, fish gathering monitoring case are immersed in the bottom always.
2. subtidal zone biological monitoring net in river mouth as described in claim 1, it is characterised in that：3.0m is pressed when fish gathering monitoring case is laid
× 3.0m piling steel pipes form babinet, and hang fixed etting.
3. subtidal zone biological monitoring net in river mouth as described in claim 1, it is characterised in that：When leader is laid, along fence net direction
Every 10m fence net etting is fixed with steel pipe；It drives piles and fixes every 10.0m along body net direction when the front part sides etting of body net is laid
A piece steel pipe, for hanging and fixing fence net.
4. subtidal zone biological monitoring net in river mouth as described in claim 1, it is characterised in that：The fence net unilateral side mesh sheet sheepshank ruler
Very little is 120.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, and mesh size 3.0cm, etting uses PE42tex6 × 3
Material, etting, which must be equipped with enough floats, makes headline float on the water surface, and bottom, which is equipped with enough sinkers, makes infraclass sink to the bottom, up and down
Guiding principle uses the rope of PE Ф 3cm；2 sections can be divided into per side wall net, length is followed successively by 90m and 30m, forms width 111.6m long 109.0m
Fence net setting area；Fence net setting is steep after first delaying, and is conducive to induction individual and enters body net, linearly, promotes intensity, fence net is long
120m, high 10m.
5. subtidal zone biological monitoring net in river mouth as described in claim 1, it is characterised in that：The netting hanging size of the body net
For 26.0m × 10.0m, horizontal hanging ratio takes 0.707 in assembly, and mesh size 3.0cm, etting uses the materials of PE42tex6 × 3
Material；The combination funnel structure at rear portion is composed of up and down 3 monomer funnel structures；By rigid frame outside monomer funnel structure
The size of support, outer framework is width 3.0m, high 3.3m, long 6.0m, and stainless steel welded prefabricated using diameter Ф 2cm, funnel is at it
Fluoran stream surface is the rectangular entrances of 3.0m × 3.3m, and the round exit of a diameter 1.0m is made at rear portion；Use size of mesh 2.0cm's
The Criny of assembly production monomer funnel structure after mesh sheet tenses, etting use the materials of PE42tex6 × 3.
6. subtidal zone biological monitoring net in river mouth as described in claim 1, it is characterised in that：The net cage frame of the fish gathering monitoring case
Frame scale is long 3.0m, width 3.0m, high 10.0m；Fish gathering monitoring case etting selection PE42tex8 × 3, mesh size 2.0cm, dress
0.707 is taken with middle horizontal hanging ratio；It is diameter from the bottom position 1.0m, 4.3m and 7.6m setting sheepshank size in fluoran stream surface
The entrance of 1.0m, and opening corresponding with body net funnel structure outlet is connected.
7. a kind of building method of subtidal zone biological monitoring net in river mouth described in claim 1, it is characterised in that：Including following step
Suddenly：
A fence net) is constructed：Unilateral mesh sheet sheepshank size is 120.0m × 10.0m, and horizontal hanging ratio takes 0.707 in assembly, mesh
Size 3.0cm, etting use the materials of PE42tex6 × 3, etting that must be equipped with enough floats and ensure that headline floats on the water surface, bottom
Portion is equipped with enough sinkers and ensures that infraclass is sunk to the bottom, and upper infraclass uses the rope of PE Ф 3cm, and fence net extends from shallow water to deep water to be applied
If the fence net of both sides is arranged in "eight" shape, two sections can be divided into per side wall net when setting, length is followed successively by 90m and 30m, with tide
The angle of water water (flow) direction is respectively 30 ° and 15 °, forms width 111.6m, long 109.0m fence nets setting area, along fence net when laying
Fence net etting is fixed in direction every 10m steel pipes, so that induction individual enters body net, fence net long 120m, high 10m；
B body net) is constructed：Side etting structure is arranged in front, and netting hanging size is 26.0m × 10.0m, horizontal sheepshank in assembly
Coefficient takes 0.707, and mesh size 3.0cm, etting uses the materials of PE42tex6 × 3；The combination funnel structure of rear portion setting is by 3
Stack combinations form monomer funnel structure up and down；It is supported by rigid frame outside monomer funnel structure, the size of outer framework is width
3.0m, high 3.3m, long 6.0m, stainless steel welded prefabricated using diameter Ф 2cm, funnel is that 3.0m × 3.3m is rectangular in its fluoran stream surface
Entrance makes the round exit of a diameter 1.0m at rear portion；Assembly production funnel after being tensed using the mesh sheet of size of mesh 2.0cm
Net, etting use the materials of PE42tex6 × 3；It is solid every 10.0m piling along body net direction when the front part sides etting of body net is laid
A fixed steel pipe, for hanging and fixing fence net, body net is set as 6.0m with fence net junction width, and is gradually received along body net
Narrow, until Criny front is contracted to 3.0m width, the sides the 6.0m net at body net rear portion is not shunk；
C fish gathering monitoring case) is constructed：Fish gathering monitoring case is cuboid net cage, and net cage frame scale is long 3.0m, width 3.0m, height
10.0m；Fish gathering monitoring case etting selection PE42tex8 × 3, mesh size 2.0cm, horizontal hanging ratio takes 0.707 in assembly,
In fluoran stream surface, the entrance for being diameter 1.0m from the bottom position 1.0m, 4.3m and 7.6m setting sheepshank size.
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| CN201810599339.6A CN108496904A (en) | 2018-06-12 | 2018-06-12 | River mouth subtidal zone biological monitoring net and its building method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247310A (en) * | 2018-09-19 | 2019-01-22 | 上海海洋大学 | A kind of method and facility of the fresh and alive fishes fishing of fisheries resources conservation type |
| CN113080157A (en) * | 2021-04-07 | 2021-07-09 | 中国海洋大学 | Large net cage fishing device and method for deep sea fish culture |
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| CN208462757U (en) * | 2018-06-12 | 2019-02-05 | 上海市长江口中华鲟自然保护区管理处 | River mouth subtidal zone biological monitoring net |
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| CN2043826U (en) * | 1988-12-14 | 1989-09-06 | 辽宁省大伙房水库管理局水产养殖场 | Fishnet for deep water traps |
| CN2259754Y (en) * | 1996-09-08 | 1997-08-20 | 蔡惠荣 | Fixed net with traps for trapping fish at lower parts of water |
| CN106857427A (en) * | 2017-04-11 | 2017-06-20 | 广东海洋大学 | A kind of natural fry finishing device of yellowfin spine porgy and its fish for transportation resources |
| CN208462757U (en) * | 2018-06-12 | 2019-02-05 | 上海市长江口中华鲟自然保护区管理处 | River mouth subtidal zone biological monitoring net |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247310A (en) * | 2018-09-19 | 2019-01-22 | 上海海洋大学 | A kind of method and facility of the fresh and alive fishes fishing of fisheries resources conservation type |
| CN113080157A (en) * | 2021-04-07 | 2021-07-09 | 中国海洋大学 | Large net cage fishing device and method for deep sea fish culture |
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