The excavation operations of water supply Headrace tunnel of Uma Oya Multipurpose Development Project in Sri Lanka with a length of 1529 m was successfully completed by Farab Company.

According to Public Relations of Farab Co., “Pashoutan Dezfouli”, Uma Oya Project Manager, announced the news and said: the excavation of Headrace tunnel of Uma Oya Multipurpose Development Project in Sri Lanka, one of the longest water transmission tunnels of this country, was successfully completed by Farab Company .

Dezfouli added: the excavation operations was completed by two Tunnel Boring Machines (TBM), one from the inlet section and the other from the outlet section at the junction of these two machines.

He continued: this tunnel is one of the few long water transmission tunnels of the world in which there is no middle access to map control.

Uma Oya project manager added: this tunnel is part of Uma Oya Multipurpose Development Project that transfer water from tank of the second dam to Hydro Power Plant of the project.

The report adds: Uma Oya multipurpose project is regarded as one of the greatest technical and engineering service projects of Iranian companies, EPC contractor of which is Farab Co.

This project which includes two Dyraaba and Puhulpola dams, 120MW Hydro Power Plant and 25km tunnel of water transmission, is located in the south-east of Sri Lanka 200km away from Colombo city.

The purpose of the project is improving irrigation of 5000 acres agricultural land, transferring 145 milion m3 water and generating 290 GW/h power in a year.