堰塞坝形成机理及稳定性分析

滑坡、崩塌和泥石流是形成堰塞坝的三种主要方式，其形成堰塞坝的条件非常复杂，涉及因素广泛。另一方面，堰塞坝完全堵江形成堰塞湖在世界各国山区广泛分布，时有发生，造成严重灾害。因此，有必要对堰塞坝形成机理及安全性状评估进行研究。本文主要针对滑坡、崩塌、泥石流和碎屑流形成堰塞坝机理进行介绍并探讨了堰塞坝的破坏机制。同时，通过渗透稳定性、抗滑稳定性和抗冲刷稳定性3个方面评估了堰塞坝稳定性分析，以期为堰塞湖的防治与治理提供科学依据。

Formation Mechanism and Stability Analysis of Barrier Dam

Landslides, collapses and debris flows are the three main ways to form barrier dams whose formation conditions are extremely complex and involving factors are widespread. On the other hand, the barrier lake naturally formed by complete damming of a river is widely distributed in mountain area all around the world and sometimes occurs causing serious disasters. Therefore, it is necessary to study the formation mechanism and safety assessment of the barrier dam. This paper mainly introduces the formation mechanism and the failure mechanism of barrier dam formed by landslides, collapses, debris flows, and clastic flows. At the same time, we evaluate the stability analysis of the barrier dam, which includes three aspects: seepage stability, anti-sliding stability and anti-erosion stability. This study provides guidance for the prevention and management of barrier lakes.