堆积体边坡稳定性研究

Stability Analysis of the Talus Slope

某堆积体边坡在自然条件下是稳定的,但因上部新建公路的开挖弃渣,导致堆积体出现大变形,严重威胁到堆积体前缘已有公路的安全运行。在系统地研究堆积体地质条件、监测成果的基础上,采用有限元强度折减法对堆积体的稳定性进行了分析。结果表明,堆积体处于临界稳定状态,新弃渣是导致堆积体变形的主因,同年雨季降雨入渗是诱因。最后提出了治理的建议。

The slope is stable in natural condition. Since the drop-slag from the upper slope, there are large deformation appeared on the surface of the slope because of a new highway excavating, and it threaten the work of the existing highway. Based on analysis of the geological condition and monitoring results, the strength reduction finite element method was used to analysis of the talus slope. The results indicate that the slope is in critical stability status, and the new drop-slag is the main cause while the rainfall during raining season is the induced reason. Some advices are proposed finally.