电渗的电荷累积理论

基于模型试验中所观测到的电荷累积现象,提出了电渗的电荷累积理论。该理论以电荷守恒原理代替电流连续性原理,建立了电荷累积模型的微分方程。微分方程的解析解表明:电势在空间的分布是线性函数和三角函数的叠加,该分布最终趋近于Esrig理论所假定的线形分布。电势梯度随时间以指数形式消减,最终稳定于一个常数,电流和土体电导率随时间的消减形式与能级梯度理论近似一致。最后,通过观测电渗电流随时间的变化过程,对电荷累积理论进行了试验验证。

Electric charge accumulation theory for electro-osmotic consolidation

Based on the phenomena of electric charge accumulation observed in the model experiments, an electro-osmosis theory named electric charge accumulation theory is brought out in this paper. By substituting the principle of current continuity with charge conservation, the differential equation of charge accumulation model is built. The analytic solution of the differential equation shows that: the spatial distribution of electric potential follows a superposition of linear and trigonometric function, and finally levels off to a linear distribution, which is hypothesized by Esrig; the decreasing of potential gradient follows a certain style of exponential function, and levels off to a constant; the decreasing styles of electric current and soil conductivity are approximatively accordant with those in energy level gradient theory. Finally, the electric charge accumulation theory is validated by some tested data.