Landslide disaster prediction method and device

A forecasting method and disaster technology, applied in forecasting, data processing applications, instruments, etc., can solve the problems of inaccurate forecasting results, incomplete consideration of landslide forecasting methods, etc., to avoid secondary injuries, ensure the safety of life and property, and improve safety. The effect of real-time prediction

Active Publication Date: 2020-05-29
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology

[0005] The purpose of the present invention is to provide a landslide disaster prediction method and device, which can comprehensively reflect the impact of rainfall in the monitoring area on time and space, in view of the incomplete consideration of landslide prediction methods in the prior art, resulting in inaccurate prediction results. process response, accurately predict the possibility and scope of landslide occurrence, and provide a basis for risk assessment

Method used

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  • Landslide disaster prediction method and device
  • Landslide disaster prediction method and device
  • Landslide disaster prediction method and device

Examples

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Embodiment 1

[0064] A method for predicting landslide disasters, including a model for predicting landslide disasters, such as figure 2 , including the following steps:

[0065] 1. Obtain data

[0066] Establish a digital terrain model, divide the research area into grids, each grid is regarded as a unit, and give each unit corresponding geological information, spatial rainfall distribution information and other hydrological information, such as elevation, slope, geological classification, rainfall information, soil thickness, groundwater level and soil parameters.

[0067] When establishing a digital terrain model, dense elevation point data can be obtained through field surveying and mapping with topographic surveying instruments, and a DEM (Digital Elevation Model, digital elevation model) can be established on this basis; DEM; or use the existing paper topographic map to digitize the topographic map vector DEM through software.

[0068] 2. Disaster Analysis

[0069] 1. Infiltratio...

Embodiment 2

[0155] The present invention provides a landslide prediction device based on the prediction method in Embodiment 1, the device includes at least one processor, and a memory connected to the processor in communication; the memory stores at least one instruction that can be executed by the corresponding processor, and the instruction is Execution by a processor, so that the processor can execute all or part of the method steps described in Embodiment 1.

[0156] All or part of the steps for implementing the above method embodiments can be completed by program instructions related hardware, the aforementioned instruction program can be stored in a computer-readable storage medium, and when the program is executed, it executes the steps including the above method embodiments. When the above-mentioned integrated units of the present invention are realized in the form of software function units and sold or used as independent products, they can also be stored in a computer-readable sto...

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Abstract

The invention relates to the field of geological disaster risk evaluation, in particular to a landslide disaster prediction method and device. The method comprises the steps: firstly building a digital terrain model, dividing a research region into grids, enabling each grid to serve as a unit, and endowing each unit with needed geological and rainfall distribution information; performing infiltration analysis to obtain pore water pressure; based on the pore water pressure, calculating the safety coefficient by using an infinite slope model, and solving the instability probability to judge theslope stability and reliability; collecting a large amount of historical landslide data, and obtaining an empirical relationship for calculating a landslide movement distance average value through regression analysis; at least one side or one corner of each unstable unit is connected to form a group, wherein one group is regarded as a landslide, the position and the volume of the landslide are determined, the landslide movement distance relation serves as a landslide movement rest condition, the movement track and the accumulation position of the landslide body are evaluated, then the landslide influence range is predicted, and a scientific basis is provided for post-disaster reconstruction and disaster early warning work.

Description

technical field [0001] The invention relates to the field of geological disaster risk assessment, in particular to a landslide disaster prediction method and device. Background technique [0002] Rainfall has a great impact on landslides. Due to the infiltration of a large amount of rainwater, the soil and rock layers on the slope are saturated, and even water accumulates on the aquifer at the lower part of the slope, which increases the weight of the slide body and reduces the shear strength of the soil and rock layers. , leading to landslides. If landslides cannot be prevented and controlled in time, it will not only cause traffic jams, threaten the safety of people's lives and property, but also cause major secondary hazards. [0003] When stormwater infiltration is considered, soil or rock heterogeneity can have a significant effect on the infiltration process; soils are stratified in places such as figure 1 The slope in is a typical slope with layered soil, and the hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26G08B21/10
CPCG06Q10/04G06Q50/265G08B21/10
Inventor 何云勇向波汪晓锋魏琨
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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