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Jinping hydropower project: main technical issues on engineering geology and rock mechanics

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Abstract

In 1978, the Jinping Project was designed as an integrated hydroelectric power scheme on the Yalong River in Southwest China. Jinping I involves a 305 m high arch dam on the upstream side of the Great Jinping River Bend. Water is directed through the mountains in four 16.7 km long, c. 13 m diameter tunnels, beneath up to 2,525 m of overburden, to the Jinping II underground powerhouse where the head is 310 m. The combined schemes will produce 8,400 MW and an annual power generation of 40.8 TW.h.

Résumé

En 1978, le projet Jinping a été conçu comme un dispositif intégré de production d’énergie hydroélectrique sur la rivière Yalong dans le sud-ouest de la Chine. Jinping I représente un barrage voûte de 305 m de hauteur, en amont du grand méandre de Jinping sur la rivière Yalong. L’eau est dirigée sous la montagne au travers de quatre galeries de 16,7 km de longueur et 13 m de diamètre, sous une couverture atteignant 2 525 m, vers l’usine hydroélectrique souterraine de Jinping II, après une chute de 310 m. Ce dispositif aura une puissance installée de 8 400 MW et produira annuellement 40,8 TW.h.

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References

  • Chengdu Hydropower Investigation & Design and Research Institute (2003) The feasibility Report of Jinping I Hydropower Project, Chengdu, China

  • East China Hydropower Investigation & Design and Research Institute (2005) The feasibility Report of Jinping II Hydropower Project, Hangzhou, China

  • Gong M, Qi S, Liu J (2009) Engineering geological problems related to high geo-stresses at the Jinping I Hydropower Station, Southwest China. Bull Eng Geol Environ (submitted)

  • Huang R, Lin F, Yan M (2009) Deformation mechanism and stability evaluation for the left abutment slope of Jinping I Hydropower Station. Bull Eng Geol Environ (submitted)

  • Jiang Q, Feng X, Xiang T (2009) Rockburst characteristics and numerical simulation based on a new energy index: a case study of a tunnel at 2500 m depth. Bull Eng Geol Environ (submitted)

  • Qi S, Wu F, Yan F, Lan H (2004) Mechanism of deep cracks in the left bank slope of Jinping first stage hydropower station. Eng Geol 73(1–2):129–144

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  • Qi S, Wu F, Zhou Y, Song Y, Gong M (2009) Influence of deep seated discontinuities on the left slope of Jinping I Hydropower Station and its stability analysis. Bull Eng Geol Environ (submitted)

  • Shan Z (2009) High in situ stress break and controlling during excavation of deep-lying tunnel in Jinping II Hydropower Station. Bull Eng Geol Environ (submitted)

  • Wu F, Hu X, Gong M, Liu J, Ren A (2009) Unloading deformation during layered excavation for the underground powerhouse of Jinping I Hydropower Station, southwest China. Bull Eng Geol Environ (submitted)

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Authors and Affiliations

  1. Ertan Hydropower Development Co., Ltd, 610051, Chengdu, Sichuan, China

    Wu Shiyong, Shen Manbin & Wang Jian

Authors
  1. Wu Shiyong
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  2. Shen Manbin
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  3. Wang Jian
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Corresponding author

Correspondence to Wu Shiyong.

Additional information

This paper introduces the Jinping Project and the specific problems created by the topographic and geological setting.

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Shiyong, W., Manbin, S. & Jian, W. Jinping hydropower project: main technical issues on engineering geology and rock mechanics. Bull Eng Geol Environ 69, 325–332 (2010). https://doi.org/10.1007/s10064-010-0272-4

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  • DOI: https://doi.org/10.1007/s10064-010-0272-4

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