新疆伊犁黄土原位试验实测资料非常缺乏，为了研究其浸水入渗规律和自重沉降特征，开展了原状土和重塑土的现场浸水试验研究，并对表面沉降和水分进行观测。研究表明：浸水过程中，任一点的饱和度存在明显的暂态饱和区，封闭压缩气体上收缩膜承受的孔隙气压力、孔隙水压力和进气值的短暂力学平衡是其存在的主要原因；原状土因黄土结构性和地层结构性，其沉降特征具有明显的阶段性，其可用分段函数进行描述，重塑土因结构性破坏，其变形阶段性不明显；浸水21 d，湿润锋面到达8.8 m，重塑土（S4）的沉降量为120 cm，原状土（S5）的沉降量为78 cm，前者比后者大35%；鉴于软弱土层存在应力集中，湿润锋面以上相邻饱和土变形尚未稳定时，其下非饱和土不发生增湿变形，因此，原状土沉降变形为湿润锋面以上饱和土尚未变形稳定的沉降量，小于自重湿陷量的计算值85 cm。研究结果对伊犁黄土浸水变形机制和增湿变形计算奠定了基础。

In-situ soaking tests were implemented on undisturbed and remolded soils in the Ili region to study the regularities of soaking infiltration and settlement of Ili loess. Surface settlement and water content were also monitored. The results show that transient saturated zone exists in the soil depending on temporary mechanical equilibrium among pore water pressure, air entry value and pore air pressure of the closed compressed gas. Undisturbed loess presents multistage settlement, which can be described by piecewise function, due to soil structure and stratum structure. On the contrary, there is no obviously multistage settlement for remolded soil due to the structural damage. The wetting front reaches 8.8 m in the 21st day of soaking test. At the same time, the settlement of the remolded soil (S4) is 120 cm, 35% larger than 78 cm of the undisturbed soil (S5). Due to the effect of stress concentration, unsaturated soil below the wetting front does not deform before the saturated soil near the wetting front reaches stable deformation. Therefore, the settlement of S5, less than the calculated value (85 cm) of the dead weight collapsibility volume, is not stable settlement deformation of saturated soil above wetting front. The results provide a basis for the understanding of mechanism of soaking infiltration and calculation of wetting deformation of Ili loess.