BACK ANALYSIS OF DEFORMATION MEASUREMENTS IN A LARGE UNDERGROUND CAVERN CONSIDERATING THE INFLUENCE OF DISCONTINUITY OF ROCKS

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  • 岩盤の不連続面の影響を考慮した大規模地下空洞の変位計測結果の逆解析
  • ガンバン ノ フレンゾクメン ノ エイキョウ オ コウリョシタ ダイキボ チカ

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Abstract

The ground surrounding a cavern generally shows not only continuous behaviours but also discontinuous behaviours of slip and spalling along various types of discontinuities.<br>Sakurai and his co-workers have proposed a method of back analysis of measured displacements by introducing the anisotropic parameters in stress-strain relationship, which enables to introduce such a discontinuous behaviour in the framework of continuum mechanics.<br>The authors have applied this method of back analysis to analyze the behaviours of a large underground cavern of the Cirata Hydroelectric Power Project in Indonesia.<br>In this paper the results obtained in this analysis are shown and discussed.

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