不圧地下水における井戸揚水の非平衡理論に関する研究

抄録

1) In this paper, the author shows that the secondorder differential equation governing the radial flow of water in an unconfined apuifer is expressed as in Eq. (A); Where, S= (H/h) S; T=kH; h: the water level at a distance r from the center of pumping well; t: time; k: hydrauric conductivity; S: effective porocity; H: the initial water level.
2) The solution of Eq. (A) is
3) It is made sure that the formula (B) for the nonsteady radial flow of water toward a well includes the formula for the steady one.