Landslide Threat Range Mapping via Equivalent Friction Coefficient

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Solution Overview

Problem

Current technologies lack an automatic mapping method for landslide threat ranges in mountainous areas, making it difficult to quantitatively assess landslide disaster threats for land use planning and disaster prevention.

Innovation Solution

A method that combines geometric characteristics of regional landslides, considers influencing factors such as area, volume, slope, and rock type, and uses statistical methods to construct a landslide runout slippage prediction model, enabling automated mapping of landslide threat ranges.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If statistical methods are used to predict landslide runout range, then the prediction capability is improved, but the automation level remains insufficient

Engineering Contradiction:

Improvelandslide prediction capabilityVSAvoidautomatic mapping capability

Core Design Contradiction:

ReliabilityVSExtent of automation

Solution Approach 1:

The patent transforms qualitative landslide assessment into quantitative prediction by introducing specific parameters (equivalent friction coefficient, hyperbolic model parameters) that enable automated calculation and mapping of landslide threat ranges

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces manual expert assessment with an automated computational system that uses statistical models and mathematical formulas to predict landslide runout ranges, achieving automation while maintaining prediction reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If expert assessment is used for landslide threat range, then the accuracy is improved, but the efficiency and productivity are reduced

Engineering Contradiction:

Improvethreat range assessment accuracyVSAvoidassessment efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The patent creates a self-service system where the hyperbolic model automatically calculates landslide threat ranges using input parameters (landslide volume, equivalent friction coefficient), eliminating the need for manual expert assessment while maintaining consistent accuracy

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

By defining specific mathematical relationships between landslide parameters and threat range boundaries, the system transforms complex expert judgment into automated parameter-based calculations, improving both efficiency and consistency

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS12216239B1Mapping method of landslide threat range based on equivalent friction coefficient and trend analysis

Publication Date: 2025.02.04 INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES

AI summary

Disclosed is a mapping method of landslide threat range based on equivalent friction coefficient and trend analysis, which includes the following steps: obtaining physical parameters of a landslide, and obtaining a volume of the landslide according to an area in the physical parameters; selecting relevant parameters based on a rock type in the physical parameters, and obtaining the equivalent friction coefficient according to the relevant parameters and the volume; obtaining a landslide runout distance according to the equivalent friction coefficient, determining coordinate points of a hyperbola and a front edge boundary range according to the landslide runout distance, and performing a hyperbolic fitting on two side boundaries of the landslide according to the coordinate points to obtain a side boundary range; generating the landslide threat range based on the front edge boundary range and the side boundary range.