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Landslide displacement prediction based on a novel hybrid model and convolutional neural network considering time-varying factors

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Abstract

Accurate landslide displacement prediction is essential for an early warning system. At present, the inputs of the data-driven models adopted in landslide displacement prediction remain unchanged. However, considering that the sensitivities of landslide displacement states to external factors are constantly changing, it is reasonable to take trigger factors’ time-varying characteristics into account for obtaining better prediction results. In this study, the input cumulative displacement was first decomposed by singular spectrum analysis, and the k-means algorithm was developed to cluster the periods representing the different states of the examined landslide. Then, a one-dimensional convolutional neural network with a detailed structure was introduced to consider time-varying inputs for periodic displacement prediction. A grey power model optimized by particle swarm optimization was proposed to predict trend displacements with less empirical judgement. Model’s performance was mainly validated based on the Baishuihe landslide in the Three Gorges Reservoir area. The application results demonstrate that (i) the periods representing different landslide states can be obtained reasonably by clustering trend information; (ii) the optimized grey power model can be utilized more universally than the polynomials for trend displacement prediction; and (iii) the consideration of time-varying trigger factors in the data-driven model further enhances the model’s prediction accuracy and robustness.

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Funding

This research has been supported by the China National Key R&D Program during the 13th Five-year Plan Period (grant nos. 2018YFC1505104 and 2017YFC1503103) and the Liao Ning Revitalization Talents Program (grant no. XLYC1807263).

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Correspondence to Fanhua Meng.

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The authors declare no competing interests.

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Pei, H., Meng, F. & Zhu, H. Landslide displacement prediction based on a novel hybrid model and convolutional neural network considering time-varying factors. Bull Eng Geol Environ 80, 7403–7422 (2021). https://doi.org/10.1007/s10064-021-02424-x

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  • DOI: https://doi.org/10.1007/s10064-021-02424-x

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