The construction of largest hydraulic tunnel has begun in Qatar

The Public Works Administration of the State of Qatar announced the start of construction of a 13-kilometer drainage tunnel.

Qatari drainage tunnel


The gravity tunnel, which has an estimated lifespan of 100 years, is one of the largest drainage tunnels in Qatar. The 4.5-meter-diameter structure will pass between the districts of Al-Huwaitim and Birkat el-Avamer, it will direct water flows from the cities of Al-Waqrah and Al-Vuqair to the treatment facilities.

Sinking is carried out with the help of two TPMKs at a depth of about 60 meters. In addition, the project includes the construction of 8 trunks with a depth of 50 to 63 meters. In addition to the main drainage tunnel, it is planned to build a branch of networks and a line of treated wastewater in El Waqrah and Al Vuqair. The total length of the optional network will be about 15 km, the tunnels will have a diameter of 400 mm to 2400 mm, their depth will be from 9 to 46 meters.

The network will be built using microtunneling technology. Tunnels for treated wastewater have a total length of about 29 km, and the diameter is from 600 mm to 1400 mm. The contractor is PORR-HBK-MIDMAC and Parsons International Ltd is responsible for the design, implementation and operation of the tunnel.

The total cost of the project is more than 1.5 billion Qatari rials, which is equivalent to $ 412 million. Construction is scheduled to be completed in the second quarter of 2024. It is noted that the new hydraulic tunnel in Qatar will be the first major project financed within the framework of a public-private partnership.  

Qatari drainage tunnel

Construction of the Qatar Drainage Tunnel. Source:

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