Laboratory Steady-State Flow Tests of Round Dual Infiltration Recharge Well with Filter Layer

Abstract

The structure, characteristics and the steady-state flow recharge tests research of the new round dual recharge well with filter layer are introduced. An infiltration recharge well with filter layer is composed of a recharge pool functioning as an inverted layer and an artificial recharge well located at the bottom center of the recharge pool. The round dual infiltration recharge well with filter layer is based on analyses of the problems of the existing infiltration recharge wells with filter layer. In this study, a laboratory steady-state flow recharge test device has been developed. Laboratory steady-state flow tests are performed to compare the existing infiltration recharge well with filter layer, a round dual infiltration recharge well with filter layer and an artificial recharge well. The results indicated that compared to the existing infiltration recharge well with filter layer, the round dual infiltration recharge well with filter layer has a larger single-well recharge volume and stronger anti-rush ability. With an increasing number of tests, the single-well recharge volumes gradually decrease and stabilize.