Flow field analysis and particle erosion of tunnel-slope systems under coupling between runoff and fast (slow) seepage

Abstract

	•Nonlinear models were used to study the flow field distribution and particle motion on slopes.
	•The model includes three regions: runoff, highly permeable soil, and weakly permeable soil.
	•Sensitivity analysis indicates that erosion is affected by runoff depth, slope angle, soil permeability, particle diameter, specific gravity, and stacking angle.

Keywords

particle erosion / particle motion / runoff-fast (slow) seepage coupling / shear stress profile / tunnel-slope system / velocity profile

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2023 The Authors. Deep Underground Science and Engineering published by John Wiley & Sons Australia, Ltd on behalf of China University of Mining and Technology.