Variation characteristics of water and sediment of managed aquifer recharge with the Yellow River water in the piedmont sand gravel channel in the North China Plain

Abstract A two-dimensional sand tank model was designed to investigate the water distribution and sediment clogging of Yellow River during seepage recharge process piedmont gravel channel in North China Plain. Due high permeability medium, only infiltration deep runoff (IDR) surface (SR) occurred experiment. The increase released did not improve effective recharge. IDR accounted for 65–85% released. After appeared, value decreased 15–30%. More than 96% suspended solids were deposited upper areas tank, among which covered by thin clay layer formed particles main cause change SR. rubber dam can promote conversion velocity SR low lateral shallow (LSR) 25–30% while increasing deposition mass tank. rationality verified numerical model, fitting degree between simulated measured results greater 0.9.