Different-scale regional flood damage risk evaluation method

A risk assessment and flood technology, applied in the fields of instrumentation, climate change adaptation, data processing, etc., can solve problems such as more research on the history of flood disasters, less integrated research on multiple research methods, and less research on rainstorm disaster processes.

Active Publication Date: 2017-05-10
JILIN NORMAL UNIV
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Problems solved by technology

[0011] Based on the research results at home and abroad, there are still some deficiencies in the risk analysis of rainstorm disasters: (1) In terms of evaluation methods, a lot of research has been done on flood disaster forecasting using one method, and there are few studies on the integration of multiple research methods; (2) ) evaluation indicators, basically use historical precipitation, wat

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  • Different-scale regional flood damage risk evaluation method
  • Different-scale regional flood damage risk evaluation method
  • Different-scale regional flood damage risk evaluation method

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Embodiment Construction

[0059] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate the present invention, and are not intended to limit the present invention.

[0060] Figure 1 It is a flow chart of flood disaster risk assessment provided by the present invention, as shown in the figure:

[0061] Step S1, the data collection and organization unit includes rainfall data, runoff, flood disaster frequency, hydrological data, terrain data, land use data, vegetation data, socio-economic data, population density data, hydrological water level observation station density data, local financial Income data and labor force population share data. and compressing the initial data and storing it in the created spatial database;

[0062] Sub-step S1.1, in the precipitation data, the intensity, duration and scope of the rainfal...

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Abstract

The invention discloses a different-scale regional flood damage risk evaluation method. The method comprises: collecting space data of a to-be-analyzed region and attribute data associated with the space data as initial data, compressing the initial data and storing the compressed data in a created space database; standardizing the initial data, and unifying units; coupling a model by utilizing an analytic hierarchy process (AHP) method and an entropy weight method, and determining each factor combination weight; and evaluating and researching a regional flood damage risk value, classifying risk grade, and generating a flood damage risk index diagram. According to the different-scale regional flood damage risk evaluation method, by utilizing the collected natural and social data as input and various algorithm coupling models, the weights are determined, and finally the flood risk grade evaluation index diagram is generated; therefore, the accuracy of flood damage risk evaluation is improved, objective and efficient advantages are achieved, and the flood damage risks, which have possibility of occurring in a research region, under given conditions are further intuitively shown.

Description

[0001] Technical field: [0002] The invention relates to the field of disaster information management, in particular to the construction of a flood disaster risk assessment method. [0003] Background technique: [0004] Flood is a phenomenon in which torrential rain or continuous rainfall causes the water level of low-lying areas and rivers to rise sharply. Its occurrence and development are affected by the natural environment system. Rainstorm and flood disasters mainly have the following characteristics: (1) Universality and persistence; (2) Global and regional; (3) Uncertainty and predictability of occurrence; (4) Sudden and slow; (5) ) Migration, hysteresis and reproducibility; (6) Duality of consequences. Floods endanger the growth of crops, disrupt normal agricultural production and the normal development of other industries, and even endanger human life, health and safety. With the instability of global climate change and the increase of extreme weather events, the f...

Claims

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Application Information

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IPC IPC(8): G06Q10/06
CPCG06Q10/0635Y02A10/40
Inventor 刘家福王鑫全李林峰单利博
Owner JILIN NORMAL UNIV
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