A method for early warning and protection of debris flow

Abstract

The invention discloses a mud-rock flow early warning and protection method, including S1, constructing a three-dimensional model of a mountain area according to remote sensing technology, regional historical hydrological data and topographic maps of the mountain area; S2, respectively constructing each mountain area according to the historical data when a mud-rock flow disaster occurs Disaster prediction model; S3. According to the probability of debris flow disaster in the disaster prediction model, evaluate the level of debris flow in each mountain area, and map the assessed level of the mountain area to the three-dimensional model of the mountain area; S4. Draw the rainfall in the mountain area and the mountain area The historical two-dimensional relationship curve between the probability of debris flow disasters, set the critical rainfall of debris flow disasters; S5, real-time acquisition of rainfall in the mountain area and the location of the rainfall, when the rainfall continues to increase and exceeds the critical rainfall, the mountain The 3D model of the area sends early warning information to the client.

Description

technical field [0001] The invention belongs to the technical field of mud-rock flow, and in particular relates to a mud-rock flow early warning and protection method. Background technique [0002] The valleys in the south are criss-cross, and the sides of the ditches are usually severely weathered, and the surface rock mass is broken. After heavy rainfall, earthquakes, etc., the broken rock and soil on the surface will peel off the mountain body, and debris flow will occur in the gully. For example, after the Wenchuan Earthquake, mudslides occurred more frequently in Sichuan, which caused huge losses to the local area. [0003] Debris flow is a special torrent carrying a large amount of mud, sand, stones and other substances, which is characterized by sudden outbreak, ferocious onset and strong destructive power. [0004] The conditions for the formation of debris flow can be divided into: [0005] 1. Abundant water source; 2. Abundant loose solid matter; 3. Favorable wat...

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Problems solved by technology

[0011] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, to provide a mud-rock flow early warning and protection method to solve the problems of inaccurate prediction of mud-rock flow disasters, poor prediction effect and poor protection effect on mud-rock flow mountain areas in existing methods

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