基于深部位移监测的堆积体稳定性分析

Stability Analysis of Accumulation Body Based on Monitoring Results of Deep Displacement

利用深部位移监测进行堆积体的稳定性评价,采用完整性指标S(i)和破坏性指标S(d),通过实时定量评价堆积体中的自下而上渐进破坏过程中稳定性的动态变化来快速评价堆积体变形发展过程和阶段评价堆积体稳定性.以紫坪铺水利枢纽工程坝前堆积体为例,对其水位升降过程中的完整性指标S(i)和破坏性指标S(d)进行了监测,并对汶川地震对该堆积体的影响程度做了快速评价.实例应用表明,本方法操作方便,切实可行.

The paper uses the deep displacement monitoring stability to evaluate the accumulation body. Rapid evaluation of deformation development process and stage evaluation of stability for the accumulation body are carried out according to the monitoring results. In this method,the integrity index S（ i） and the destructive index S（ d） are used to evaluate quantitatively the real-time dynamic changes of stability in the accumulation of progressive damage from the bottom to top. Taking the accumulation body of the dam of Zipingpu hydraulic project as an example,the method can not only monitor the index accumulation in S（ i） and destructive index S（ d） during the water movement but also quickly evaluate the impact of Wenchuan earthquake on the accumulation body. It is proved that the method is convenient,practical and feasible.