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Simulation of landslide run-out by considering frictional heating and thermal pressurization

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Abstract

Some of the remarkable characteristics of natural landslides, such as surprisingly long travel distances and high velocities, have been attributed to the mechanisms of frictional heating and thermal pressurization. In this work, this mechanism is combined with a depth-averaged model to simulate the long runout of landslides in the condition of deformation. Some important factors that influence frictional heating and thermal pressurization within the shear zone are further considered, including velocity profile and pressurization coefficient. In order to solve the coupled equations, a combined computational method based on the finite volume method and quadratic upwind interpolation for convective kinematics scheme is proposed. Several numerical tests are performed to demonstrate the feasibility of the computational scheme, the influence of thermal pressurization on landslide run-out, and the potential of the model to simulate an actual landslide.

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Acknowledgements

We thank two anonymous reviewers for their constructive comments. We also do appreciate Dr. M.L. LIN for providing the terrain data of Jiufengershan landslide. This work was supported by the National Natural Science Foundation of China (Grant No. 41790433), NSFC-ICIMOD (Grant No. 41661144041), Key Research and Development Projects of Sichuan Province (2017SZ0041), and CAS "Light of West China" Program.

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Correspondence to Si-ming He.

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Liu, W., He, Sm. & He, Zl. Simulation of landslide run-out by considering frictional heating and thermal pressurization. J. Mt. Sci. 16, 122–137 (2019). https://doi.org/10.1007/s11629-018-5012-4

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  • DOI: https://doi.org/10.1007/s11629-018-5012-4

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