1　前　　言由于构造和冰川活动,第四纪被认为是富含粉土沉积物的地质时期[1]。世界上在经历过冰川活动或冲积作用的地区,粉质土非常普遍。中国黄河水下三角洲地区大约6ｍ以上的土层,粉土占绝对优势,而由于粉土在外力作用下的响应所导致的地质灾害和工程问题非常突出。例如与粉 1 Introduction Quaternary is considered to be a geological period rich in silt deposits due to tectonism and glacier activity [1]. In the world where glaciers or alluvial effects have been experienced, silty soil is very common. In the Yellow River Delta, about 6 m above sea level, silt occupies the absolute dominant position. However, due to the response of silt under the external force, geological disasters and engineering problems are very prominent. For example with powder