该文以工程边坡为例,首先以变形监测数据为基础并与实际工况对应,说明了预应力锚索在桩-锚支护结构中并未起到有效加固作用,而后再以滑坡勘探结果为依据,探明了锚索失效的根本原因,最后分析了边界条件选择错误的原因和后果。经过一系列分析说明,在边坡施工过程中建立有效的变形监测体系是有必要的,造成本工程边坡失稳的根本原因是勘察程序的不严谨和设计人员的粗心大意,值得广大勘察设计人员警醒和思考。 Taking the engineering slope as an example, this paper firstly based on the deformation monitoring data and corresponding to the actual working conditions, shows that the prestressed anchor cable does not play an effective reinforcing role in the pile-anchor supporting structure, and then takes the landslide exploration Based on the result, the root cause of the failure of the anchor cable was proved. Finally, the reasons and consequences of the wrong selection of the boundary conditions were analyzed. After a series of analyzes, it is necessary to establish an effective deformation monitoring system during the slope construction. The fundamental reason for the slope instability of this project is that the investigation procedure is not rigorous and the carelessness of designers is worth the majority of survey and design Staff alert and thinking.