海积相土地区生态型护岸结构研究

A study of ecological revetment structure in marine soil area

结合海积相土地区刘大线航道整治工程,分析了海积相土地区航道水-土-护岸结构相互作用的机理.在理论分析基础上,提出了海积相土地区航道新型生态护岸构建的原则,将生物技术与工程技术相结合,选择以海积土地区的砂质粉土以及当地的植物作为护岸材料,构造了一种阶梯砂管式生态型护岸结构,并对该护岸结构的稳定性、生态性、亲水性进行了计算分析.将阶梯砂管式生态型护岸与目前常用的夹石混凝土和透水沉箱式护岸进行比较,经济性分析表明本文提出的新型护岸结构节约资源,节约护岸工程投资.所得成果可为其他海积相砂质粉土地区的护岸工程建设提供借鉴参考.

The interaction mechanism among water-soil-revetment structure is analyzed,considering the regulation engineering of Liudaxian channel in marine soil area.Based on the theoretical analysis,the principles of establishing a new ecological revetment in the marine area are proposed.Using sandy silt of marine area and local plants as the revetment materials,and combining biological technology with engineering technology,we propose a new eco-revetment of ladder-sand tube.The stability of the new revetment structure is calculated and discussed,as well as its ecological features and hydrophilicity.By comparing with the common revetment types,such as the gravity revetment of concrete mixed with stone and the revetment of permeable caisson,in economic analysis,this new type of revetment structure not only saves resources,but also reduces the investment.The research results show that the new revetment structure can be applied in the other revetment constructions in the marine area of sandy silt.