Abstract：In this paper, the stress feature and the interrelation between stress and failure in railway rock slope，which is excavated in different section，are analysed with numerical method. Based on a field investigation into 183 railway rock slopes，a system in which slope angle is calculated quantitatively and slope stability is evaluated according to rockmass quali?ty is built. The engineering, practices shown that the system is successful and effective. Fi?nally, an engineering practice of the analysis of slope stability and the location of bridge foundation is provided as an example，in which the slope on river bank is 250m in height and bears 12000t load of bridge pier.
1996, Vol. 13 
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