Design of partitioned earth-rock dam of Shankou Reservoir Project

Shankou Reservoir Reconstruction Project is located in Sanmenxia City, Henan Province, where the permeability of excavated soil from the quarry field and spillway is not qualified for the construction of core wall dam and inclined wall dam, so a partitioned earth rock dam is proposed. By dividing the dam into different zones reasonably, the dam body is partitioned as soil anti-seepage zone and rockfill zone, between which the transition layer and filter layer are arranged. And the soil permeability in the soil anti-seepage zone is required to be less than 5×10^-5 cm/s, so as to meet the design standard. The partitioned earth rock fill dam can make full use of excavated material from spillway, which reduced the amount of engineering spoil soil and the engineering investment.