Investigation and study of slope unstability of subaqueous delta of morden Yellow River
Jia Yong · The Chinese Journal of Geological Hazard and Control · 2000
The abundance of silt and rapidly deposit of it at stream\|outlet of Yellow River make its subaqueous delta with special features.The topographic features,sediment types,space distribution and elementally physico\|mechanical properties of the underwater slope and sediments have been achieved by utilizing precise depth recorder,high resolution seismic profile,side scanning sonar,combining with seafloor drilling,sampling,measuring and the laboratory testament.The major outlook styles of the seafloor slopes failure are the collapsed depressions and the gully of the silt flows.The original destroyed areas of the seafloor slope can revive again under the storm wave.The reviving time is accordant with the beginning and the termination of the storm wave.The repeating beginning and movement is obviously to be limited in the landslide bodies which can neither extend nor retreat along the slope.The testament research in situ and laboratory about dynamic responding process of soil under wave should be hold to discover the mechanics of slope failure,establish the quantitative prediction and evaluation of stability and engineering geological environmental quality,in order to control the geological hazards in off shore engineering activity.