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A double-column flexible shallow sea aquaculture seine

A technology with flexible columns and shallow seas, which is applied in the field of purse seine aquaculture devices, can solve problems such as damage to Longhang sandbags, leakage of wrapped coarse-grained sand, affecting the service life of aquaculture purse seines, etc., so as to improve the impact resistance of water flow and ensure tensile strength Ability, the effect of improving stability and resistance to wind and waves

Active Publication Date: 2020-12-15
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impact of seawater for a long time can damage the sandbags of Longxing, and the wrapped coarse sand will leak out, which will affect the service life of the aquaculture seine.

Method used

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  • A double-column flexible shallow sea aquaculture seine
  • A double-column flexible shallow sea aquaculture seine
  • A double-column flexible shallow sea aquaculture seine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as Figure 1-8Shown, a kind of double-column flexible shallow sea aquaculture purse seine, comprises the column pile 3 that is connected with seabed, the main net 4 that is connected with column pile 3, the top of vertical two column piles 3 is fixed by cross bar, and column pile 3 is on the main net 4. The two sides of the net 4 are symmetrically arranged, the cross section of the main net 4 is "X" shaped, and the intersection point is connected by the rope 1, the cross section of the main net 4 is "X" shaped, the intersection point is connected by the rope 1, and the rope 1 is provided with a floating The ball 2, the upper part of the main net 4 is connected to the upper end of the pile 3 through the lasso 6, the lower part of the main net 4 is connected to the lower end of the pile 3 through the lasso 6 and buried in the seabed, and the depth of the insertion of the pile 3 into the seabed is the same as the height above the seabed Equal, main net 4 is fixed with...

Embodiment 2

[0029] Such as Figure 2-8 Shown, a kind of double-column flexible shallow sea aquaculture purse seine, comprises the column pile 3 that is connected with seabed, the main net 4 that is connected with column pile 3, the top of vertical two column piles 3 is fixed by cross bar, and column pile 3 is on the main net 4. The two sides of the net 4 are symmetrically placed, the section of the main net 4 is "X" shaped, and the intersection is connected by a rope 1, the length of the main net 4 at the lower half of the "X"-shaped intersection of the main net 4 is the vertical distance between the upper and lower ends of the main net 4 Equal, the upper part of the main net 4 and the upper end of the column pile 3 are fixed by the lasso 6, the lower part of the main net 4 and the lower end of the column pile 3 are fixed and embedded in the seabed by the lasso 6, the column pile 3 is fixed with the seabed of the shallow sea by the pile foundation 5, and the column The pile 3 is fixed wit...

Embodiment 3

[0039] In order to evaluate the effectiveness of the pile of the present invention, the resistance of the pile is calculated, and a common pile of equal diameter is used as a comparison.

[0040] Pile resistance test: The test tank is 40m long and 8m wide. The water flow and circulation in the tank are powered by water pumps. There are energy dissipation and flow stabilization equipment in the tank. There are pools with the same water level on the outside of the middle part, which are used to hold floating bodies. Place 10 measured piles in the central position, the piles are arranged in a row horizontally, the distance between the piles is 5D (the diameter of the piles), the water depth is equal to the height of the piles, and the flow rate is changed by changing the speed of the water pump to achieve the same flow rate , to achieve the same Reynolds number, measure the total resistance of the pile, and obtain the resistance of the pile. The results are shown in Table 1.

[0...

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Abstract

The invention discloses a double-column flexible aquaculture purse seine in a shallow sea, and belongs to the technical field of purse seine aquaculture devices. The purse seine comprises column pilesconnected with a seabed and a main net connected with the column piles, the top ends of the two longitudinal column piles are fixed by cross bars, the column piles are symmetrically arranged at bothsides of the main net, the section of the main net is X-shaped, the junctions of the main net are connected by steel ropes, and the upper part of the main net is fixed with the upper ends of the column piles through lassos; the lower part of the main net is fixed with the lower ends of the column piles through lassos and buried into the seabed, the column piles are fixed with the seabed of the shallow sea through pile bases, the column piles are fixed with the pile bases through fixing devices, and a double-layer net with netting large in mesh size is arranged on the portion, between a high tide place and a low tide, of the main net. According to the technical scheme, the situation can be avoided that netting is damaged because the purse seine is stacked and entwined at different tide places; the stability and the capability for resisting wind and waves of the whole structure of the aquaculture purse seine can be improved; the purse seine has the advantages of being applicable to large-scale purse seine engineering in shallow seas, simple in construction, economical, environmentally friendly and high in universality and sustainability.

Description

technical field [0001] The invention belongs to the technical field of seine aquaculture devices, in particular to a double-column flexible shallow sea aquaculture seine. Background technique [0002] my country's seawater cage culture started in the 1970s. In recent years, the scale of cage culture has developed rapidly. The shallow sea seine culture project is a typical marine facility culture model. The column pile adopts the method of direct tie and vertical fixation, which has high requirements on the design of the pile's resistance to tearing, breaking and tilting, and the economic cost is also large, and it is easy to cause damage in extreme weather conditions, while the suspension type and the The floating rope seine type is more suitable for small and medium-sized aquaculture sea areas, and it is difficult to apply to large-scale and large-scale aquaculture projects. [0003] Prior art, such as the Chinese invention patent with the authorized announcement number CN 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/60A01K61/65
CPCY02A40/81
Inventor 桂福坤王萍潘昀冯德军张健
Owner ZHEJIANG OCEAN UNIV
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