pressure tunnel

pressure tunnel

[′presh·ər ‚tən·əl]
(civil engineering)
A waterway tunnel under pressure because the hydraulic gradient lies above the tunnel crown.
References in periodicals archive ?
34 times more than the flow discharge in free mode and we will have turbulence in the case of non-aeration to the pressure tunnel in the spillway.
The delegation along with WAPDA Chairman had a detailed round of the site and witnessed the construction activities at weir (dam), head race channel, sand trap, head race tunnel, pressure tunnel, pressure shaft, surge chamber, and power house area.
In the late 1930s, the Low-Turbulence Pressure Tunnel came on line and was used along with other tunnels to develop advanced airfoils that were applied to several aircraft in the early 1940s.
Linking them was the Catskill Aqueduct, a concrete-lined conduit which was, in some places, a tube laid in a trench and covered with earth, and in others, a pressure tunnel hewn through bedrock.
2-mi, 24-ft diameter concrete-lined pressure tunnel that runs south from the Hill View Reservoir in Yonkers into the Bronx, through Manhattan and Central Park, and then under the East River to Long Island City in Queens.
The headrace system is formed by a pressure tunnel that leads to two pressure lines.
Golen Gol Lot-II involves construction of diversion weir, intake, gravel trap, sand trap, headrace tunnel, pressure shaft, pressure tunnel and roads.
The 270-foot high structure, which contains nine (9) levels of valved water conduits for controlling both the quantity and water temperature of the reservoir discharge, is situated at the portal of the P1 Pressure Tunnel, the construction of which was previously awarded to the Atkinson-managed venture.
Limited Tenders are invited for Re-Steel Lining At Umrong High Pressure Tunnel Of Kopili Hydro Electric Plant, Umrongso, Dima Hasao, Assam.
The contract is for construction of the P-1 Pressure Tunnel which will transport water between the inlet/outlet tower in the new reservoir and the P-1 Pumping Plant located adjacent to the San Diego Channel.
Both the dam and the dam Moiry Toutemagne are each connected via a pressure tunnel and a pressure line to the power plant Mottec.
Limited Tenders are invited for Re-Steel Lining At Umrong High Pressure Tunnel At Upstream Of Y- Piece Of Kopili Hydro Electric Plant ( Khep),Neepco Ltd.