Analysis on stability of surrounding rock mass of Longtan large underground powerhouse with FLAC<sup>3d </sup>

YANG Weimin; CHEN Weizhong; LI Shucai; YANG Diansen; LI Fei

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Volume 27 Issue 2

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Chinese Journal of Geotechnical Engineering > 2005 > 27(2): 230-234.

YANG Weimin, CHEN Weizhong, LI Shucai, YANG Diansen, LI Fei. Analysis on stability of surrounding rock mass of Longtan large underground powerhouse with FLAC^3d[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(2): 230-234.

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Analysis on stability of surrounding rock mass of Longtan large underground powerhouse with FLAC^3d

1.Geotechnical Structural Engineering Technique Research Center of Shandong University Jinan 250061 China 2.LRSM Institute of Rock and Soil Mechanics The Chinese Academy of Sciences Wuhan 430071 China

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Published Date: February 14, 2005

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Abstract

Abstract

The geological conditions are complex in Longtan hydroelectric project. The strata are dipping steeply and the faults are developed. The caverns are constituented with long span and high side wall. So the stability of surrounding rock mass is very important during excavation. In this paper, the excavation and support of caverns are numerical simulated by fast Lagrangian method (FLAC) according to the designer’s scheme. Numerical results of two profiles considering excavation with support are compared and analyzed. Finally some useful conclusions are obtained.
- underground cavern,
- stability of surrounding rock mass,
- excavation