Construction Work For Tunnels, Shafts And Subways – Etzelwerk Power Plant Renovation -Lot 204-Apparatus Chamber Moated Castle-. The Etzelwerk Power Plant, Built Between 1932 And 1937, Uses The Gradient Between Lake Sihl And Lake Zurich To Generate Energy And Produces Around 10% Of Switzerlands Traction Power Requirements. After The License Renewal In 2023, Sbb Is Now Carrying Out The Renewal And Replacement Of Parts Of The Etzelwerk Pumped Storage Power Plant As Part Of The “Etzelwerk Power Plant Renewal” Project. This Includes Replacing The Existing Covered Pressure Pipes Between The Moated Castle And The Machine House In Altendorf With An Armored Pressure Shaft Located Underground. The Subject Of This Tender Is The Construction Of The Apparatus Chamber Water Lock Structure With The Shaft Head Building, The Construction Of The Connecting Tunnels On The Upstream Side Of The Apparatus Chamber, The Moated Lock And The Main Tunnel, Which Connect The Newly Created Pressure Line Between The Apparatus Chamber Water Lock And The Machine House With The Existing Headwater System And Their Connection Work To The Existing Headwater System In The Area Of The Water Castle As Well As The Material Management Of The Tunnel Excavation Material And The Creation Of The Interim Storage Facility And Terrain Design Completion Of The Work. Part Of The Scope Of The Present Tender Also Includes The Concrete Backfilling Of The Pressure Shaft Armor In The Inclined Shaft As Well As Upgrading Work On The Access Road From Altendorf. Below Are Some Of The Main Data For The Advertised Lot: Access Shaft: · Clear Diameter Approx. 8.5 M · Depth From Ok Terrain To Ok Apparatus Chamber Approx. 58 M Apparatus Chamber Moated Lock · Clear Width Approx. 12.00 M · Clear Length Approx. 17.00 M · Clear Height Approx 100% · Excavation Diameter Approx. 3.15 To 4.2 M Extract Of Main Quantities · Excavation In The Rock Approx. 9,339 M3 · Backfilling Of Armor In The Pressure Shaft (Scc Concrete) Approx. 7,930 M3 Further Information Can Be Found In The Tender Document “B1.1-Special Provisions” And The Other Tender Documents.
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