Anchoring slope landslide instability risk evaluation method under rainfall condition

By combining the segmented slip surface method and Monte Carlo probability analysis, an integrated assessment technology for the reliability of multi-layered rock and soil anchored slopes was constructed, which solves the problem of insufficient parameter uncertainty assessment in existing technologies and realizes accurate assessment and dynamic early warning of slope risks.

CN121744041APending Publication Date: 2026-03-27CHINA YANGTZE POWER
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Patent Information

Application Number
CN202511921299.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-18
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

Existing technologies cannot effectively quantify parameter uncertainties in slope stability analysis, nor can they systematically consider the coupling effects between various parameters, resulting in incomplete risk assessment results that fail to reflect the actual risk status of the system.

Method used

A theoretical calculation formula for the stability coefficient of multi-layer rock and soil anchored slopes under rainfall infiltration was constructed using the segmented slip surface method. Combined with the Monte Carlo probability analysis framework, a reliability index was introduced to establish an integrated assessment model for slope reliability. Through large-scale sampling calculations and the fusion of real-time monitoring data, dynamic risk early warning was achieved.

Benefits of technology

It enables precise decision-making on slope risks, improves the accuracy and realism of slope stability analysis, systematically considers the coupling effect of multiple parameters, and provides an integrated assessment technology system for the reliability of anchored slopes under rainfall in multi-layered soil and rock masses, supporting dynamic risk early warning.

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Abstract

The invention provides an anchoring slope landslide instability risk evaluation method under a rainfall condition, and belongs to the technical field of geotechnical engineering and geological disaster prevention and control, and the method comprises the steps: constructing a theoretical calculation formula of a multilayer rock-soil body anchoring slope stability coefficient under a rainfall infiltration effect based on a segmented slip plane method; based on a Monte Carlo probability analysis framework, introducing a reliability index, and establishing a slope reliability integrated evaluation model; acquiring soil body, rainfall, support and geometric parameter data of the side slope; defining various parameters as random variables, and performing large-scale sampling calculation based on the theoretical formula; counting probability distribution of the stability coefficient, and solving a reliability index and a failure probability; establishing a risk monitoring criterion, and judging whether each index exceeds a permissible value or not; and implementing risk dynamic early warning based on a judgment result. According to the method, an integrated evaluation technology system for the reliability of the anchored side slope under rainfall suitable for the multi-layer rock-soil body is constructed, and efficient quantification of the reliability of the side slope under the multi-parameter coupling effect is achieved.
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