Hydraulic Structures Engineer
Risk Management Center,
US Army Corps of Engineers - Institute for Water Resources
12596 West Bayaud Avenue | Suite 400 | Lakewood, CO | 80228
Office: 303.963.4527 | Mobile: 720.633.3855
Title of the Talk : “Modifying the Mosul Dam Bottom Outlet and Flip Bucket”
Mosul Dam is located in Nineva, Iraq on the Tigris River, and is owned by the Government of Iraq and operated and maintained by the Ministry of Water Resources (MoWR). The dam is a 110 m high earth and rockfill embankment with primary purposes of water supply, hydropower, and flood control. The Mosul Dam Bottom Outlets were designed to divert the river during construction, to manage the reservoir when the lake level is sufficiently low that hydropower cannot be generated, or to lower the reservoir during emergencies. The bottom outlet consists of a submerged intake tower which bifurcates the flow into two identical conduits, each with 12 m diameter reinforced concrete culvert sections, an access and emergency regulation tower, followed by 10 m diameter steel lined tunnel sections, and regulated by 7 m high by 5 m wide top seal tainter gates. Each bottom outlet has a maximum discharge capacity of 1,225 m3/s with 55 m of reservoir head. The energy dissipation structure for the bottom outlets consists of a flip bucket located downstream of the tainter gates and a partially concrete lined plunge pool. This case study presents a brief synopsis of the Mosul Dam bottom outlet, a brief history of the project, the issues regarding operation of the bottom outlet, erosion issues in the plunge pool, and the hydraulic issues related to the design, construction and commissioning of the new dentated flip bucket to reduce the potential for erosion in the plunge pool.
About the Speaker
Mr. Phillips is a Senior Hydraulic Structures Engineer with 22 years of experience in civil engineering, with expertise in hydraulic structures engineering (hydraulics and structural), dam safety, water resources, and risk management. He serves as a National and International subject matter expert for USACE in hydraulic structures engineering across a range of dam and water resources related projects (domestic and international civil projects, interagency working groups, and military). Mr. Phillips has served as the hydraulic structures design engineer, project manager, advisor, or risk assessor on spillways, outlet works, and appurtenant structures for more than 100 water storage dams, flood protection levees, flood detention dams, and mine tailings projects in the USA, Australia, New Zealand, Peru, Colombia, Iraq, Turkey, Saudi Arabia, Uzbekistan, Ecuador, and South Korea.