Abstract: Basedon the experiment of drainage-injection and the relation of stress and osmosis parameter, the authors studied the stress and seepage process by using the numer-ical method. The result shows that the adjustment of stress field will change the osmosis of rocks and affect the seepage process. The effect is nonlinear. In other words, due to the seepage effect, the change of water level does not correspond to the change of osmosis.

Key words: Underground water, Seepage, Numerical method, Body stress, Water-level anomaly