Effect of Abutment Load of Arch Dam on Stability of Underground Caverns Complex

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Abstract:

Considering topographic and geologic conditions, project layout and investments, concret arch dam is adopted in a hydropower plant and underground powerhouses are arranged in mountains on left and right banks. However, the minimum distance between the excavation boundary of abutment of arch dam on elevation 850m and underground powerhouse is only 110m. Abutment load created by reservoir storage, permeability and earthquake may affect general stability of underground caverns in operation period. Thus, using elasto-plastic finite difference method, three dimensional numerical simulation models of underground caverns and slope of abutment of arch dam is establised and proposed key issues are systemly studied. The calculation results show that, under reservoir storage and dam vibration subject to earthquke, abutment load has small effect on plastic zone, displacement and stress around opennings and the caverns would be stable in operation period.

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2045-2048

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January 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] FAN Qixiang, WANG Yifeng. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(7): 1307–1313. (in Chinese).

Google Scholar

[2] HAN Rongrong, ZHANG Jianhan, ZHANG Xiao, et al. Journal of Shandong University (Engineering Science), 2009, 39(4): 140-144. (in Chinese).

Google Scholar

[3] ZHANG Zhiguo,XIAO Ming,ZHANG Yuting,et al. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(5): 982–989. (in Chinese).

Google Scholar

[4] HUANG Sheng, CHEN Weizhong, YANG Jianping, et al. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(3): 483–490. (in Chinese).

Google Scholar

[5] WANG Rubin, XU Weiya, SHI Chong, ZHOU Xianqi. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(3): 568–575. (in Chinese).

Google Scholar

[6] CHEN Yumin,XU Dingping. Fundamentals of FLAC and FLAC3D and case study[M]. Beijing:China Water Power Press,2008. (in Chinese).

Google Scholar

[7] Specifications for seismic design of hydraulic structures(DL5073-2000). Beijing: china electric power press. (in Chinese), (2000).

Google Scholar