Aiming at effectively improving the electroosmotic efficiency and effects

the influence of three different arrangements of the electrodes

namely rectangular array

hexagonal array

and parallel and transposition array

on the effect of electroosmotic drainage through laboratory model tests is investigated. Aluminum tube electrodes are adopted; and the treated area

applied voltage and treated time are designed to assure the consistency among the three electrode arrangements. Drainage

the rate of current decrease

cracks on the soil and coefficient of energy dissipation are analyzed and compared after the tests. It is revealed that the cracks of rectangular array are regular and its drainage effect is ordinary. Parallel and transposition array has the maximum drainage

the largest rate of current decrease as well as the best performance based on the coefficient of energy dissipation. The cracks of hexagonal array are the most complex

which run through the lengthwise section and have a strong impact on the electroosmotic efficiency at later stages. Before the extensively developing of cracks

the rate of hexagonal array’s current decrease is very small. According to the results of laboratory tests

it is recommended to employ the parallel and transposition array primarily for electroosmotic treatment.