Application of Damage Model in Stability Analysis of ShuangjiangKou Underground Caverns

Abstract:

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A damage constitutive model was established to evaluate the stability of jointed rock masses around the underground caverns of Shuangjiangkou Hydropower Station. In this model, a second-order damage tensor was formulated to describe the initial geometric imperfection of jointed rock masses. A failure criterion for crack coalescence and a damage evolution equation were proposed by considering the secondary cracks induced by excavations according to the fracture mechanics principles. A subprogram under the framework of FLAC-3D was developed for the damage constitutive model and the damage evolution equation. The model and program were then applied in the stability assessment for the Shuangjiangkou underground cavern group.

Info:

Periodical:

Key Engineering Materials (Volumes 462-463)

Edited by:

Ahmad Kamal Ariffin, Shahrum Abdullah, Aidy Ali, Andanastuti Muchtar, Mariyam Jameelah Ghazali and Zainuddin Sajuri

Pages:

1391-1396

DOI:

10.4028/www.scientific.net/KEM.462-463.1391

Citation:

L. Xiang et al., "Application of Damage Model in Stability Analysis of ShuangjiangKou Underground Caverns", Key Engineering Materials, Vols. 462-463, pp. 1391-1396, 2011

Online since:

January 2011

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Price:

$35.00

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