Installation method of large shallow sea aquaculture seine

Abstract

The invention discloses a method for installing a shallow sea aquaculture facility, in particular to a method for installing a large shallow sea aquaculture seine. The method includes the following steps of firstly, moving the whole aquaculture seine to a coast and folding up netting before the tide goes out; secondly, moving the whole aquaculture seine in the first step to a preset aquaculture point in offshore deepwater through buoyancy and fixing the aquaculture seine after the tide goes out; thirdly, unfolding the netting by several times after the second step is completed, wherein the height of the netting which is unfolded for the first time is larger than the falling tide water level at the preset aquaculture point and smaller than the rising tide water level at the preset aquaculture point; fourthly, making a sinker of the aquaculture seine in the third step fall to the seabed when the tide falls; fifthly completely unfolding the netting of the aquaculture seine in the fourth step when the tides goes out again. By means of the method, the technical purpose of easily, conveniently and effectively installing the large shallow sea aquaculture seine is achieved, and the method has the remarkable advantages that construction workloads are small, the construction cycle is short, and the installation effect of the aquaculture seine is good.

Description

technical field [0001] The invention relates to a method for installing a shallow sea culture facility, in particular to a method for installing a large-scale shallow sea culture net. Background technique [0002] Mariculture is different from freshwater lake aquaculture, and will be restricted by many factors such as ocean, weather, ebb and flow, so the development of mariculture facilities is extremely important. At present, marine aquaculture is mainly concentrated in cage culture, raft culture and seine culture. Among them, large-scale seine culture in shallow sea is the expansion of traditional coastal seine culture to deep waters, but its structure is different from that of traditional coastal waters. There are significant differences in net engineering, and it will be one of the important forms of marine facility farming in the future. [0003] Large-scale shallow sea aquaculture seines are generally composed of nets, sinkers, floats, piles or anchors and auxiliary f...

AI Technical Summary

Problems solved by technology

[0003] Large-scale shallow sea aquaculture seines are generally composed of nets, sinkers, floats, piles or anchors and auxiliary facilities. The entire aquaculture seine is huge in size. Net clothes generally use iron chains weighing more than 30 kg per meter as sinkers. The weight of the entire aquaculture seine is very heavy, making it very difficult to install and fix the aquaculture seine in the sea

[0004] At present, large-scale shallow sea aquaculture purse seines are generally laid in deep water sections in the open sea, and then divers sew each section of netting pieces together underwater. At the same time, the netting of the breeding seine in the existing installation method of the breeding seine all directly sinks from the sea surface to the seabed surface, because the settlement time of the whole netting is short and fast, the netting and the bottom of the netting Under the action of ocean currents, the nets are easy to be stacked together, and there is not enough time to unfold them, which affects the breeding area of ​​the breeding seine, and the layered nets are particularly easy to scratch the breeding animals (especially fish), which affects the quality of the breeding seine. Breeding effect

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