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Geological Engineering: Proceedings of the 1st International Conference (ICGE 2007)

Editor
Baosong Ma
Baosong Ma
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ISBN:
9780791802922
No. of Pages:
1760
Publisher:
ASME Press
Publication date:
2009

This paper deals with the orientation ability of clay minerals and its effects on landslides using the result of x-ray diffraction for clay mineral in sliding-zone soil. At first, the basic measured principles for the orientable arrangement of clay minerals were discussed and the methods of the quantitative appraisement for the orientation ability of clay minerals are given. And then, according to the result of x-ray diffraction of the clay minerals in the sliding-zone soil, the orientation ability of clay minerals had been quantitatively analyzed and calculated. Results show that the sliding-zone soil has the orientation ability of clay minerals, expansibility and shrinkage as well as homogeneity of expansion and shrinkage under the action of water. They may cause the continuous reduction of shear strength and structural stability of sliding-zone soil and form landslide because of the expansibility and shrinkage of clay minerals themselves, reversibility and circulation of expansion and shrinkage of sliding-zone soil. Finally, a case study is used to illustrate its application.

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