Study on Seepage Mechanism and Stability of Unsaturated Slope Based on Trefftz Method

Abstract This paper proposes a space–time Trefftz method (STM) to study the seepage mechanism and stability of unsaturated slopes. The groundwater flow under transient conditions is important in engineering practice for solving practical problems such as assessing soil Based on equation, we derived basis functions by splitting variables. solutions are approximated using domain. Stabl software subsequently employed analyze slope rainfall recharge condition with combined reservoir water level fall. results demonstrate that steeper hydraulic drop fall infiltration, more unstable becomes.