粘土渗透仪的改进与探讨

改进后的粘土渗透仪,采用了直接击实法测定粘土渗透系数,可防止渗透实验中易出现的侧渗现象,减少实验误差,实验中用气体加压,可使粘土渗透系数的测定周期从1～2个月缩短至2～3 d。实测数据与常规标准渗透仪数据可比。并可进行有害物质渗滤液在粘土中渗透速度、转化、吸附、交换等方面的实验研究,使用方便。 

A Discussion on the Amelioration of Clay Permeameter

A direct compacting way is adopted to determine the permeability coefficient using ameliorated clay permeameter. Thus the side leakage is prevented and the experimental error is reduced. By using air to compress, the experimental period for the determination is reduced from 1-2 months to 2-3 days. The experimental data are comparable to those obtained from the normal standardized permeameter and can be used in the research of permeation velocity, transformation, absorption and exchange of poisonous substances in clay. The improved permeameter is easy to handle.