Optimization and Selection of Foundation Surface of Sanhekou Reservoir Arch Dam

ZHANG Xing-an; ZENG Guo-hong; DANG Jian-tao; GUO Xi-feng

doi:10.11988/ckyyb.20191000

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Journal of Changjiang River Scientific Research Institute ›› 2020, Vol. 37 ›› Issue (3) : 114-117. DOI: 10.11988/ckyyb.20191000

ROCKSOIL ENGINEERING

Optimization and Selection of Foundation Surface of Sanhekou Reservoir Arch Dam

ZHANG Xing-an¹, ZENG Guo-hong², DANG Jian-tao³, GUO Xi-feng⁴

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Abstract

The foundation rock mass of Sanhekou Reservoir’s arch dam was investigated according to borehole deformation tests and sonic wave tests in the geological drilling at prospecting stage. These tests revealed the deformation characteristics of foundation rock mass and obtained the correlation between borehole deformation modulus and sonic velocity. The standard for selecting the foundation excavation surface according to the drilling quick test was obtained. The elevation of foundation’s excavation surface was optimized from 501 m to 504.5 m. The rationality of this optimization scheme was verified by dam foundation excavation and deformation monitoring.

Key words

foundation surface / deformation modulus / wave velocity / rock mass / Sanhekou reservoir

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ZHANG Xing-an, ZENG Guo-hong, DANG Jian-tao, GUO Xi-feng. Optimization and Selection of Foundation Surface of Sanhekou Reservoir Arch Dam[J]. Journal of Changjiang River Scientific Research Institute. 2020, 37(3): 114-117 https://doi.org/10.11988/ckyyb.20191000

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