Based on the experiment of the constant head method for saturated hydraulic conductivity

the effects of soil-stone ratios and stone sizes on K_s were studied.Meanwhile

we calculated the K_s with Peck-Watson and Bouwer-Rice equations respectively

then compared the results with the measured data.The results show that: K_s firstly decreases with the increases of the stone contents

and then increases.The relation between them follows binomial function;K_s decreases with the increases of the mean diameters of the stones;the relation between them follows index function.The values calculated by the equation of Peck-Watson and Bouwer-Rice are much greater than measured data when the stone sizes are between 1.0~5.0 cm.