Abstract
An increasing number of landslides are occurring during the construction of highways in mountainous areas all over the world. A recent highway landslide located in the mountainous region of Southwest China is taken as a representative example to carry out the initiation mechanism and deformation characteristics analysis, and study the intelligent partitioning method in this paper. The geological conditions of the landslide are obtained through detailed geological surveys and investigation. A three-dimensional (3D) monitoring network with a total of 72 multi-points, including 53 surface displacement monitoring points and 19 deep displacement monitoring holes, is established to examine the spatial deformation characteristics of the landslide for nearly 25 months. The monitoring results of the surface displacement show that the dynamic deformation of the landslide can be divided into three stages, namely initial deformation stage, accelerated deformation stage, and stabilization stage. Based on the strata distribution obtained by the borehole investigation and the results of deep displacement monitoring, the depth of the slip surface can be reliably determined. The smart contract method in blockchain technology combined with the multi-point monitoring dataset is novelty applied to realize the intelligent automatic partition of the highway landslide without any human involvement. This method can provide the basis for further independent analysis of different landslide zones. According to the investigation and analysis, the initiation mechanism for the highway landslides is attributed to both internal poor geological conditions and external intense precipitation and engineering excavation.
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Acknowledgements
Thanks to Prof. Wenping Gong from China University of Geosciences, Wuhan for his advices.
Funding
This work was supported by the National Key R&D Program of China (No. 2018YFC1507200), National Natural Science Foundation of China (Nos. 42090054, 41922055, 41931295 and 41772376), and the Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) (No. CUGGC09).
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Li, C., Long, J., Liu, Y. et al. Mechanism analysis and partition characteristics of a recent highway landslide in Southwest China based on a 3D multi-point deformation monitoring system. Landslides 18, 2895–2906 (2021). https://doi.org/10.1007/s10346-021-01698-2
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DOI: https://doi.org/10.1007/s10346-021-01698-2