负孔隙水压力和毛细张力的关系及其对时效稳定的贡献

渗流及卸荷都能产生负孔隙水压力，而负孔隙水压力则与毛细水压力直接相关。通过分析毛细水上升高度、表面张力与渗透系数、黏滞系数、孔隙率等参数的关联性，得出了毛细张力的理论确定方法以及和负孔隙水压力的关系；同时就较难确定且较为抽象的成桩钻孔卸荷时效稳定问题，从极限平衡稳定系数概念人手，定量地分析了黏聚力和毛细张力对时效稳定的贡献，以期对工程实践有一定的指导作用。

Relationship between Negative Pore-water Pressure and Capillary Water Pressure and Their Contribution to the Timing Stability

Negative pore-water pressure can be made by seepage and unloading, and it is directly associated with capillary water. The capillary water and the relationship with negative pore-water pressure were theoretically deduced by analyzing the parameters of capillary water ascension height, surface tension, osmotic coefficient, coefficient of viscosity and void ratio. In the meantime, by analyzing the coefficient of stability of limit equilibrium, the borehole＇s timing stability from cohesion and capillary tension is quantitatively calculated, which is directive to engineering practices.