In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 353-358 ( 2007-9), p. 973-976
Abstract:
According to the theories of fracture mechanics and damage mechanics, the constructive
model and fracture damage mechanism of brittle discontinuous jointed rockmass are systematically studied under the state of complex stress in this paper. By the aid of the method of equivalent strain
energy, the constitutive relation of anchored brittle discontinuous jointed rockmass is derived under the state of compression-shearing. The constitutive relation under the state of tension-shearing is
also developed according to the theory of self-consistence. Finally, based on the above constructive models, the three-dimensional finite element procedure has been developed to model the ground
movements that occur when underground power-houses of pumped-storage power station are installed in discontinuous jointed rockmass. The anchor supporting is an important component of
this underground power-houses excavation work. Besides the displacement field and the secondary state of stress induced by the excavation disturbance, the effect of anchoring and the damage
evolution around the power-houses have been particularly described during the process of installation. The numerical results obtained by numerical simulation were compared with that of
field monitoring in order to verify the validity of the proposed models.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.353-358
DOI:
10.4028/www.scientific.net/KEM.353-358.973
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2007
detail.hit.zdb_id:
2073306-9
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