Disaster damage early warning method for marine culture net cage
A technology for cages and disasters, which is applied in the field of early warning of disasters in marine aquaculture cages, can solve problems such as time-consuming, unfavorable practical applications, and inability to realize rapid early warning of marine disasters, and achieve rapid and accurate judgments and improved early warning efficiency.
Active Publication Date: 2018-09-28
DALIAN UNIV OF TECH
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[0008] At present, the relevant research on marine aquaculture cages mainly focuses on the dynamic characteristics under the load of the marine environment, and no systematic analysis has been conducted on the disaster-induced damage mechanism of aquaculture cages under marine disasters.
In addition, both the physical model test and the numerical simulation method have the disadvantage of taking a long time, and one experiment can only study a single disaster-causing factor, and cannot realize rapid early warning of marine disasters, which is not conducive to practical application
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[0035] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0036] as attached figure 1 As shown, a method for early warning of disaster damage to marine aquaculture cages, including: determining the damage level of marine aquaculture cages; using the gray correlation degree to identify the main control factors of disaster-induced damage to the structure of marine aquaculture cages; using BP neural network to establish disaster-caused The quantitative relationship between the main control factors of damage and the structural damage of marine aquaculture cages; draw the spatial distribution map of the risk level of marine aquaculture cage culture disasters. In the embodiment, further, the damage levels of the net cages are divided into five levels, which are respectively level I disaster, level II disaster, level III disaster, level IV disaster and level V disaster. Further, the spatial distribution map ...
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The invention discloses a disaster damage early warning method for a marine culture net cage. The method includes the following steps: determining the damage grade of the marine culture net cage; identifying main control factors that cause disasters and damages to a marine culture net cage structure by using grey correlation degree; establishing a quantitative relationship between the main controlfactors that cause the disasters and damages and the damages to the marine culture net cage structure by using a BP neural network; and drawing a spatial distribution map of culture disaster risk grades of the marine culture net cage. The damages to a floating frame, the loss of culture volume caused by the netting deformation, anchorage retracting and the like are analyzed, the main control disaster-inducing factors that cause the damages to the marine culture net cage structure can be identified by using a grey correlation degree analysis method for a specific marine culture net cage facility structure in a target sea area, a quantitative relationship between the disaster-inducing factors and the damage degree of a gravity deep water net cage structure can be constructed by using a BP neural network method, and thus the damage grade of the marine culture net cage can be quickly and accurately judged, and corresponding early warning information can be provided for culture individuals.
Description
technical field [0001] The invention relates to the technical fields of aquaculture and marine engineering, in particular to a method for early warning of disasters in marine aquaculture cages. Background technique [0002] my country's offshore and deep-sea aquaculture cages are seriously threatened by severe marine disasters such as storm surges, which seriously hinders the development of my country's facility aquaculture industry. According to statistics, the economic loss of marine aquaculture caused by coastal storm surges and other marine disasters in my country is as high as billions of yuan every year. There is an urgent need for an early warning system and method for disaster damage to aquaculture net cages at sea, which can predict the damage level of aquaculture net cages before marine disasters arrive; when marine disasters arrive, provide rescue suggestions for aquaculture net cages; Afterwards, the extent of damage to the cages can be assessed. Commonly used ...
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Login to View More IPC IPC(8): G06Q10/06G06Q50/02G06N3/08
CPCG06N3/084G06Q10/0635G06Q10/06393G06Q50/02
Inventor 毕春伟赵云鹏孙熊雄张尧国志兴
Owner DALIAN UNIV OF TECH