摘要
:滑坡堵塞江河形成的天然土石坝是自然作用的产物 ,不同于人工土石坝。天然土石坝形成后有些存在几十年、几百年 ,有些形成后不久就溃决 ,这与坝体本身的性质和河水入流量有关。依据野外实测资料 ,论证了土石坝的稳定性主要是由土石坝的物质组成、几何形状和堰塞湖入流量等因素决定的 。
Natural rock-field dams resulting from landslides or rock avalanches differ from man-made embankment dams, because they are made up of a heterogeneous mass of unconsolidated earth material, and has no engineered water barrier, thus no way to prevent from piping. Many of them have breached with a short life. The main influence factors of a nature dam stability are presented in this paper with the typical cases from China and abroad. The study shows that the stability is closely related with the sorting and size of landslide mass, the geometry of dam, the inflow of dammed river and seepage of dam. It is very important to study the mechanism of failure of this kind of dam so as to predict the breaching possibility of a natural dam.
出处
《地质科技情报》
EI
CAS
CSCD
北大核心
2001年第1期77-81,共5页
Geological Science and Technology Information
