A test method for the effect of loess moisture content change on slope stability

By constructing multi-dimensional physical characteristic matrix and real-time monitoring of pore water pressure on loess samples, dynamically update the slope stability parameters, solving the accuracy and timeliness of loess slope stability prediction in the existing technology, and achieving efficient monitoring and early warning of loess slopes under extreme rainfall conditions.

CN119125509BActive Publication Date: 2025-03-25EASTERN GANSU UNIVERSITY
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Patent Information

Application Number
CN202411585519.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-08
Publication Date
2025-03-25
Estimated Expiration
2044-11-08

AI Technical Summary

Technical Problem

The existing technology lacks a systematic study on the mechanical properties of loess under different water contents and stress conditions, resulting in poor accuracy and reliability of prediction results, and cannot timely reflect the gradual changes in the mechanical properties of the soil during rainfall, unable to form an accurate dynamic monitoring and recursive prediction mechanism, and unable to issue early warning signals in a timely manner, resulting in insufficient emergency response to landslides.

Method used

By collecting and preparing loess samples, measuring their physical parameters, building a multi-dimensional physical characteristic matrix, monitoring pore water pressure in real time, calculating shear stress, dynamically update the stability parameters of the slope, comprehensively assessing the risk of instability, determining whether the slope has entered an instability state, and sending out an early warning signal when instability is instable.

Benefits of technology

It has achieved comprehensive capture, dynamic monitoring and recursive prediction of the mechanical properties of loess slopes under different moisture content and stress conditions, and timely issued early warning signals, which has improved the accuracy of landslide prediction and the timeliness response.

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Abstract

The present invention relates to the fields of geological engineering and civil engineering, and in particular to a test method for the influence of changes in loess water content on slope stability. The content includes: collecting and preparing loess samples, measuring the physical parameters of the loess samples, and constructing a multidimensional physical property matrix of the loess samples; real-time monitoring of pore water pressure, and calculating the shear stress of the loess samples based on the dynamic change data of the pore water pressure; based on the shear stress of the loess samples and the multidimensional physical property matrix of the loess samples, dynamically updating the dynamic stability parameters of the slope, and comprehensively evaluating the instability risk of the slope. It solves the problems that traditional slope monitoring technology lacks systematic research on the mechanical properties of loess, resulting in poor accuracy and reliability of prediction results; lacks real-time update of slope stability, resulting in the inability to form an accurate dynamic monitoring and recursive prediction mechanism; and fails to issue early warning signals in a timely manner, resulting in insufficient emergency response to landslides.
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