Design of unsteady filtration in the upper water-resistant prism of earthfill dams given horizontal drainage layers in the baseFayziyev Khomitkhon, Kulumbetov Bakhodir, Choriyev Jamshid, Khalimbetov Azat, Yakubov Kuvonchbek and Khomidova DiloromE3S Web of Conf., 401 (2023) 01032DOI: https://doi.org/10.1051/e3sconf/202340101032