Intense rainfall, possibly linked to global warming, can cause railway adjacent slopes to become unstable, leading to soil slides that cover or damage railway lines. Different types of slope failures were observed, such as shallow erosion, gully erosion, and soil-rock interface failures. Flume tests were conducted to study the sliding mechanisms of these failures, considering factors like soil thickness, rainfall intensity, and slope morphology. Results showed that shallow failures start slowly but erode quickly, gully erosion is influenced by water collection, and soil-rock interface failures erode rapidly. All types of failures showed initial deformation near the slope's base, indicating the presence of subsurface flow.