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2009•Design of Hydroelectric Power StationRequires access

Construction diversion tunnel(in combination with tailrace tunnel) design of Xiluodu Hydropower Station

Yun Qiu

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Abstract

Xiluodu Hydropower Station is the largest one on the Jinshajiang river.3 diversion tunnels symmetrical arrangement in each abut ment,in which No.1,No.2,No.5,No.6 diversion tunnel are combined with the tailrace tunnel.Each tunnel has a flow cross-section of 18m×20m(width×height),the largest excavated section reaches 21.60m×23.60m.Besides the low angle interlayer-intraformational shear zones endanger the tunnel crown surrounding rock stability,the tunnel working condition is complicated the design and construction of large-diameter diversion tunnels call for high requirements of design concept and technology.

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What this paper is about

Xiluodu Hydropower Station is the largest one on the Jinshajiang river.3 diversion tunnels symmetrical arrangement in each abut ment,in which No.1,No.2,No.5,No.6 diversion tunnel are combined with the tailrace tunnel.Each tunnel has a flow cross-section of 18m×20m(width×height),the largest excavated section reaches 21.60m×23.60m.Besides the low angle interlayer-intraformational shear zones endanger the tunnel crown surrounding rock stability,the tunnel working condition is complicated the design and construction of large-diameter diversion tunnels call for high requirements of design concept and technology.

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Available abstract

Xiluodu Hydropower Station is the largest one on the Jinshajiang river.3 diversion tunnels symmetrical arrangement in each abut ment,in which No.1,No.2,No.5,No.6 diversion tunnel are combined with the tailrace tunnel.Each tunnel has a flow cross-section of 18m×20m(width×height),the largest excavated section reaches 21.60m×23.60m.Besides the low angle interlayer-intraformational shear zones endanger the tunnel crown surrounding rock stability,the tunnel working condition is complicated the design and construction of large-diameter diversion tunnels call for high requirements of design concept and technology.

Key concepts: Hydropower, Water diversion, Geotechnical engineering, Geology, Section (typography), Engineering, Environmental science, Business

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