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eISSN: 2083-5906
ISSN: 1230-1485
ISSN: 1230-1485
ORIGINAL RESEARCH
Strength Monitoring Technology of Loess Slope
Based on Distributed In-Situ Monitoring
1
College of Civil Engineering, Longdong University, Qingyang, 475000, China
Submission date: 2025-08-27
Final revision date: 2025-10-21
Acceptance date: 2025-11-12
Online publication date: 2026-05-14
Corresponding author
KEYWORDS
distributedin-situ monitoringloess slopeintensity monitoringactive heatingactively heated fiber opticBragg grating
TOPICS
ABSTRACT
Loess soil is widely distributed in northwest China and has a layered structure and developmental
characteristics. The stability of multi-level loess slopes under earthquake action has always been a
concern, and the shear strength of loess directly affects the strength of loess slopes. Therefore, it is
urgent to monitor the shear strength of loess. To achieve precise monitoring of the shear strength of
loess, this study proposes a distributed in-situ monitoring method that integrates the active heating
fiber method of the moisture field with Bragg grating. This study first analyzes the distributed in-situ
monitoring method that combines the active heating fiber method of the water field with Bragg grating,
and then constructs a loess slope strength monitoring model based on distributed in-situ monitoring. The
testing and analysis results of the proposed model showed that as time increased, the temperature rise
of loess with higher moisture content decreased. When the moisture content of loess was 4% and 20%,
the maximum temperature rise of loess was 30°C and 20°C, respectively. Overall, the shear strength of
loess gradually increased with the increase of dry density. The research model can accurately monitor
the resilience of loess slopes, providing reliable technical support for the prediction and early warning
of loess slope landslides on reservoir banks.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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| eISSN: | 2083-5906 |
| ISSN: | 1230-1485 |
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