A large-scale test bed (LWH=6 m×3 m×2.8 m) instrumented with various sensors is used to examine the effects of rainfall infiltration and evaporation on the deformation and failure of cracked soil slopes, taking the Anhui area along the Yangtze River as a field example. The results indicate that (1) during rainfall, the soil around the shallow shrinkage fissures attains transient saturation, and the attendant decrease of matric suction is the primary cause of the shallow slope failure; (2) slope deformation continues during post-rainfall evaporation; (3) if a period of evaporation is followed by heavy rainfall, soil creep is concentrated near the deepest cracks, and two zones of steep gradients in pore pressure form at the crest and toe of the slope. Finally, a saturated zone forms near each crack base and gradually enlarges, eventually forming a continuous saturated layer that induces the slope instability or failure.

以安徽长江沿岸地区为例，采用大型水床（LWH = 6 m×3 m×2.8 m），通过各种传感器对降雨入渗和蒸发对裂隙土边坡变形和破坏的影响进行研究。以河为例。结果表明：（1）降雨过程中，浅层裂隙周围的土壤达到了瞬时饱和状态，随之而来的基质吸力下降是浅层边坡破坏的主要原因。（2）降雨后蒸发过程中边坡变形仍在继续；（3）如果经过一段蒸发期之后又出现大量降雨，则土壤蠕变集中在最深的裂缝附近，并且在坡顶和脚趾形成了两个孔隙压力陡峭梯度的区域。最后，在每个裂纹基底附近形成一个饱和区，并逐渐扩大，