中文摘要：

基于抽注水条件下含水层土体应力状态和应力路径的理论分析，采用Flow TracⅡ增量固结试验系统，通过控制孔隙水压力实现了对实际含水层抽注水条件下土体应力状态和应力路径的模拟，探讨总应力不变条件下，孔隙水压力诱发的土体变形特征；指出常规单向压缩试验结果描述抽注水条件下含水层土体变形特性存在局限性，验证了土体变形特性随应力水平卵变化的规律；不同粒径砂土的孔压加栽试验表明抽水条件下含水层砂土的变形不是瞬时产生的，其变形存在滞后效应及蠕变特性，抽水应力路径下砂土的平均应变速率与时间关系在双对数坐标中呈现近似线性关系。

英文摘要：

Based on the theoretical analysis of both the stress state and the stress path of aquifer under pumping-recharge, adopting FlowTrac It system for rowe incremental consolidation testing, the stress state and the stress path of the actual aquifer under pumping-recharge were simulated by controlling the pore water pressure. And the soil deformation characteristics caused by the variation of pore water pressure were discussed under the same total stress. It was indicated that there would be limitations when descri- bing soil deformation characteristics under pumping-recharge by using the results of conventional unidirec- tional compression tests. Moreover, the changing regularity of the soil deformation characteristics with the stress level 7/was verified. The pumping test of different particle size sands showed that the deformation produced by aquifer sandy soil did not generated at the moment, and there were oppositely deformation lags and creep characteristics. Besides, in the pumping stress path, it showed a linear relationship between the average strain rate and time in bi-logarithm coordinate.