Menjil dam rehabilitation by resin grouting and high capacity anchors

The Menjil dam, on the Sefid-Rud river, located in Iran is a concrete gravity dam with 24 buttresses and has maximum height of 106 m and 417 m crest length. The catchment area is 58000 km 2 with 1.8 billion m 3 reservoir and a 4.2 billion m 3 yearly average water supply. The irrigated area is 2200 km 2 while the power generated per year is 420 million kWh. In June 1990 an earthquake of 7.3 on the Richter scale occured and caused severe damage to the dam itself. Immediate rehabilitation measures were required. The treatment consisted of repair to the cracks ; in addition, anchors were forseen, to be installed below the cracks.