A Method to Determine GSI Value by Using P-Velocity and its Application in Engineering

Abstract:

Rock mass mechanical parameters play a significant role in geotechnical engineering design, slope stability evaluation and numerical simulation, which is commonly determined by GSI method. The simplified method using P-velocity to determine GSI (Geological Strength Index) values is proposed in this study, avoiding the limitations of Hoek-Brown method. The relationship between GSI and P-velocity is established through data collected from several projects in China. Then the dam site of Rumei hydropower station, Tibet, China has been taken as a case study to validate this relationship. This method can be utilized directly in engineering projects since it can meet with the engineering accuracy requirement and reduce the cost.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 250-255
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.250
• Online since: July 2014
• Authors: Yuan Zhao, Liang Qing Wang*, Peng Zhou, Yue Han, Guo Rong Chen
• Keywords: GSI, Hoek-Brown, Mechanical Parameters, P-Velocity

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