The initial state of the consolidated specimens can be classified into dilative and contractive in the light of the soil state relative to the critical state line . the failure mechanisms of both dilative and contractive soils under the penetration of rainfall are analyzed 根據(jù)斜坡土體狀態(tài)在臨界狀態(tài)線的相對(duì)位置將土體分為剪脹和剪縮兩種類型,并對(duì)這兩種土體在暴雨條件下的破壞機(jī)理和破壞過程進(jìn)行了分析。