Abstract: The geological conditions of a high cutting slope located in Xianfeng interchange of En-Qian Expressway are very poor. During the construction period and the trial operation period, the slope platform collapse with various scale, retaining structure cracking and median separation zone deviation are observed which makes the remediation difficult and with potential high risk. Throughout the safety monitoring of the slope in the early stage of the remediation, the emergency remediation period and the operation period, the monitoring data are provided for the expressway operation safety and construction real-time feedback, which ensures the smooth construction treatment of the slope hazards and provides the basis for the remediation effect evaluation.

Key words: High Slope, Hazard Remediation, Slope Monitoring, Evaluation of Remediation