Dynamic Robbins TBM will Adapt Mid-bore
Feb 19, 2009
An extensive hydroelectric project in northeast Turkey will employ a Robbins Main Beam TBM at two different tunnel diameters. Launched in Winter 2008/2009, the 4.8 m (15.8 ft) diameter TBM and back-up are excavating a series of headrace tunnels for contractor Kolin Construction Co. Inc.
Diameter change will require removal of the outer cutterhead sections, bottom and side supports, roof shield, dust shield, and gripper shoes. The components will then be replaced with 4.0 m (13.1 ft) diameter adaptations before the machine is transported to the smaller tunnel sections.
Differing tunnel diameters were designed into the massive Akköy II hydropower scheme—one of the 4.0 m (13.1 ft) diameter tunnels will transfer water from several sources to the main Gökçebel reservoir, capable of holding over 100 million cubic meters (3 billion cubic feet) of water. The 4.8 m (15.8 ft) diameter tunnel will transfer water from the reservoir to the Yaşmaklı Dam site, a concrete gravity dam 100 m (328 ft) high. From there, water is sent through the second 4.0 m (13.1 ft) diameter tunnel to a surge chamber at the Akköy II power plant located on Harşit River.
Kolin is undertaking the construction works for Akköy Energy A.S., who owns the license for the project according to the Electricity Market Law in Turkey. Once complete, the Akköy II Hydroelectric Project will supply 898 million KWh annually to the National Grid at a 154 kV voltage level. The new project will add to the current 315 million KWh supplied by the Akköy I Hydroelectric Project. The Akköy I project has been completed and is in operation, also generating energy by diverting water from the nearby Harşit River.
The Robbins Company
29100 Hall Street
Solon, OH 44139
More News and Articles
Sep 22, 2023
PPXXI Conference and Exhibition welcomes McElroy Manufacturing, Inc. as the mobile app sponsor. Their sponsorship enhances networking opportunities for the delegates. Scheduled over September 25 -27, 2023, in Lake Buena Vista, Florida, PPXXI is the key technical and business event …
Sep 20, 2023
Aquatech is the leading water technology show in the world, with over 800 exhibitors and expecting over 22,000 visitors from over 140+ countries.
Sep 18, 2023
Designed to reduce pollution in Lake Erie by four billion gallons per year, Project Clean Lake is a 25-year plan being overseen by Cleveland's Northeast Ohio Regional Sewer District (NEORSD). When construction crews complete the $3 billion undertaking in 2036, …
Sep 13, 2023
Mullane once again proved why the company is an industry leader in pipeline solutions with a relining project on the mid north coast of New South Wales.
Sep 11, 2023
Pezzimenti Trenchless continues to showcase its position as a leading trenchless specialist by completing works on two Victorian projects.
Sep 08, 2023
Silvertown Tunnel under Thames - Newham to Greenwich near O2 Arena: See two massive boreholes in east London
The second of two boreholes beneath the Thames – which will together form London’s new Silvertown Tunnel – is now complete.
Sep 04, 2023
Report highlights American Water’s sustainable impact on communities across the U.S.
Aug 31, 2023
Anaergia Selected to Design, Build and Operate Organic Waste-to-Renewable Energy Project in San Diego County
System to provide renewable power, reduce wastewater utility costs, and cut greenhouse gas emissions for East County Advanced Water Purification facility.
Aug 28, 2023
Spiral wound lining is a sustainable method of pipe maintenance, allowing water authorities and councils to renew their critical infrastructure. Interflow is an expert in this field and has been pioneering new techniques for decades.
Aug 25, 2023
Loader tells Trenchless Australasia that it can be hard to identify minor issues, meaning that sometimes faults are only seen when there is a system failure. “There’s a range of things that will contribute to damaging the sewer network,” says …
Aug 23, 2023
Aqua Metro has been awarded a position on the Yarra Valley Water Pipes and Facilities Program of works.
Aug 21, 2023
European Commission Regulation restricting lead in PVC supports circular aims of PVC pipe manufacturers
TEPPFA welcomes the new European Commission regulation restricting lead usage in PVC products, setting a new standard in environmental responsibility and public health protection. This regulation supports the ongoing efforts of PVC pipe manufacturers to create a more sustainable circular …