FEM ANALYSIS OF THE EFFECTS OF SATURATED SAND SEAMS ON STABILITY OF ACCUMULATIONS ALONG UPPER MINJIANG RIVER

Because of the complex geology conditions,there are many special accumulations along the up-reach of Minjiang river,southwest,China. In particular,there one or several seams of sand along the upriver of Minjiang river,southwest,China.Many practices have proved that the excavation will lead the sand seams to emerge big deformation,and then lead the accumulation to fail.This paper presents a FEM analysis on the failure mechanism.It examines how the sand seams affect the stability of the accumulations under the condition of excavation.