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| RESEARCH ON FAILURE MECHANISM OF RAILWAY CUTTING SLOPES WITH EXPANSIVE ROCKS |
| Li Min |
| First Survey and Design Institute of MOR, Lanzhou 730000 |
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Abstract Based on the engineering geological characteristics of the expansive rocks on the Na- Pai Section of the Nanning-Kunming Railway Line，combined with the failure examples of cut?ting slopes with expansive rocks on the roadbed testing engineering works and the investigated results of slope failure in the Na-Pai Section, the mechanism of failure produced on expansive rock cutting slopes in the Na-Pai Section has been analyzed and researched. This paper points out that the principal factors causing unstable failure of cutting slopes are expansive. crack and low- strength properties of the expansive roeks. Thereby, the reference bases for taking engineering measures to further renovate the expansive rock defects are also proposed in this paper.
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Received: 14 February 1995
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1995, Vol. 12 
