Abstract: The topographical conditions of Guizhou mountainous area are complicated, and it is inevitably affected by topography and geological conditions in the construction of urban roadways. As a result, cut slopes are becoming more and more common in urban roadways projects in Guizhou. The stability of cut slopes is the key to the effective control of roadway engineering hazards. Therefore, it is necessary to attach great importance to the investigation and evaluation of the stability of the cut slope in the construction of urban roadways. This paper takes an urban cut slope in Guizhou Province as the research object and carries out a detailed on-site survey of the cut slope. The method has been used to conduct the geophysical prospecting methods such as core-drilling sampling method, borehole television imaging method, and rock mass acoustic wave test, combined with theoretical analysis, numerical calculation and other studies analyzed the stability of the cutting slope, and the proposed corresponding treatment suggestions, in order to provide a certain reference for the urban road slope stability research and engineering application.

Key words: City Roadways, Cut Slopes, Geological Survey, Stability Analysis