Abstract
Mosul Dam is an earth fill dam, with a storage capacity of 11.11 km3 constructed on highly karstified gypsum beds alternating with marl and limestone. After impounding in 1986, seepage locations were recognized. The dam situation now indicates that it is in a state of extreme relative risk. If it fails, then 6 million people will be affected and 7202 km2 area will be flooded. Grouting operations will elongate the life of the dam but will not solve the problem. Building a protection dam downstream will be the best measures to secure the safety of the downstream area and its’ population.
Highlights
Mosul Dam is located on the Tigris River in North Western part of Iraq; approximately 60 km northwest of Mosul city (Iraqi Ministry of Water Resources 2012) (Fig. 1)
The results showed that rock quality designation (RQD) was 45–65% and 0–20% for the two years respectively
Mosul Dam is suffering from the seepage problem under the foundation of the dam since the start of its operation in 1986
Summary
Mosul Dam is located on the Tigris River in North Western part of Iraq; approximately 60 km northwest of Mosul city (Iraqi Ministry of Water Resources 2012) (Fig. 1). The importance of the Wadi Malih aquifer is due to the great difficulties it caused during the construction of the pump storage scheme; and that it shapes the ground water flow regime in and around the right abutment of the dam in addition to the fact that it contributed to the formation of a series of sinkholes at the right bank downstream of the main dam.
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