Bidirectional conversion mechanism of rainfall infiltration flow-controlled and pressure-controlled boundaries and slope fracture seepage analysis

Key Points

• This research aims to clarify the bidirectional conversion mechanisms of rainfall infiltration under various boundary conditions and enhance slope stability assessments.
• Reconstructed pressure control equations based on Darcy's flow theory.
• Developed a rainfall infiltration control equation for bidirectional conversion of flow and pressure boundaries.
• Proposed methods for treating rainfall infiltration boundaries in discrete fracture-pore media.
• The proposed method effectively addresses errors from one-way rigid conversions of traditional infiltration boundaries.
• Fractures significantly influence the rainfall infiltration process in slopes, with matrix dominant in low intensity and fractures in high intensity rains.

Abstract