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Deformation failure characters and instability criterion of abutment rock slope in Heihe reservoir(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年06期
Page:
64-68
Research Field:
Publishing date:
2009-12-20

Info

Title:
Deformation failure characters and instability criterion of abutment rock slope in Heihe reservoir
Author(s):
YU De-hai1; 2; PENG Jian-bing2; SUN Zhi-guo1
1.Institute of Road and Bridge Engineering,Dalian Maritime University,Dalian 116026,Liaoning,China;2.School of Geology Engineering and Geomatics,Chang’an University,Xi’an 710054,Shaanxi,China
Keywords:
geotechnical engineering;  rock slope;  deformation failure character;  instability criterion;  critical water highness
PACS:
TV221.2
DOI:
-
Abstract:
According to the geological condition of abutment rock slope in Heihe reservoir, combining deformation failure characters of the slope, it is indicated that two control factors of the landslide are the schistosity along slope and water gather in top splay fracture. Based on geomechanics model of the slope, a new cuspcatastrophic model on slope stability is established. The equations for calculating the critical water highness in top splay fracture are developed by adopting catastrophic theory, thus instability criterions of the slope are put forward. The results show that the critical water highness in top splay fracture obtained by calculation is 2.2 m, and the water highness in top splay fracture obtained by field survey is 2.3 m. Thus, the calculation results keep coincidence well with the actual ones. 6 figs, 12 refs.

References:

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Last Update: 2009-12-20