Debris flow evolution process based hierarchy early-warning method

Abstract

The invention discloses a debris flow evolution process based hierarchy early-warning method. The evolution process of the method mainly adopts a before-starting debris flow state and an after-starting debris flow state. The early-warning method can comprises three steps that data acquisition is performed, a field research and RS explanation technology is applied to obtain historical debris flow disaster data, and a wireless sensor network is adopted to acquire real-time monitored disaster data; a GIS technology is applied to establish a historical debris flow disaster database and a real-time database; real-time monitoring is performed, the GIS technology is adopted to compare and analyze detection data in the real-time database and data in the historical debris flow disaster database so as to obtain debris flow disaster early-warning grade, and then corresponding debris flow disaster early-warning information is issued through Web and App. A debris flow evolution process early-warning mode is provided, the debris flow disaster monitoring and early-warning efficiency is improved, accordingly technical support is provided for disaster prevention and damage reduction, and a large amount of personal and property loss is reduced.

Description

technical field [0001] The invention relates to the technical field of geological disaster risk analysis and evaluation thereof, in particular to a hierarchical early warning method based on the evolution process of debris flow. Background technique [0002] Debris flow is a common mountain natural disaster. It is a special fluid composed of loose solid matter such as sediment and stones and water. It is one of the most serious types of geological disasters in my country. Because of its short occurrence time and concealment Strong, destructive and other characteristics, often causing heavy casualties and huge economic losses. my country's mountainous area is about 6 million square kilometers, accounting for about two-thirds of the country's land area, and most of them are concentrated in vast areas such as southwest and northwest. These areas are in areas with frequent precipitation in summer, and debris flow disasters occur frequently. With the development of the western de...

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Problems solved by technology

[0005] my country's debris flow is mainly based on prevention and control. In the actual application process, the existing debris flow short-term early warning technology has defects such as weak data analysis and processing capabilities and lack of data collection.

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