A Hierarchical Early Warning Method Based on Debris Flow Evolution Process
A debris flow and process technology, used in alarms, special data processing applications, instruments, etc., can solve problems such as lack of data collection and weak data analysis and processing capabilities, so as to reduce personnel and property losses, avoid regional limitations, and improve overall Sexuality and timeliness effects
Inactive Publication Date: 2017-10-10
SOUTHWEAT UNIV OF SCI & TECH
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[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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[0031] The first step is to obtain historical debris flow disaster data through field research and remote sensing interpretation of historical remote sensing data;
[0032] The second step is to use GIS technology to construct a historical debris flow disaster database, and import the acquired historical data into the historical debris flow disaster database through the ArcCatalog tool;
[0033] The third step is to interpret the current remote sensing image data, and then use ArcMap and ToolBox to call the data in the historical debris flow disaster database and the current remote sensing image interpretation data for data comparison and analysis. If the attribute value of the translation result is higher than the historical data, two ways (Web+App) can be used to release the debris flow forecast information before the start to the outside world according to the corresponding warning level, and at the same time, according to the sensitivity analysis results between the inducin...
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The invention discloses a hierarchical early warning method based on the evolution process of debris flow. The evolution process is mainly divided into two states of debris flow before starting and debris flow after starting. The early warning method can be divided into three levels: data collection, field investigation and RS Interpretation technology to obtain historical debris flow disaster data, using wireless sensor network to collect real-time monitoring disaster data; applying GIS technology to build historical debris flow disaster database and real-time database; for real-time monitoring, using GIS technology to combine the detection data in the real-time database The data in the historical debris flow disaster database is compared and analyzed to obtain the early warning level of debris flow disasters, and then the corresponding debris flow disaster early warning information is released through the Web and App. The invention proposes an early warning mode for the evolution process of debris flow, which improves the effectiveness of monitoring and early warning of debris flow disasters, thereby providing technical support for disaster prevention and reduction, and reducing a large number of personnel and property losses.
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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IPC IPC(8): G08B31/00G06F17/30
Inventor 丁明涛周鹏庙成王骏
Owner SOUTHWEAT UNIV OF SCI & TECH