一种新型生态护坡结构及其设计方法

A new ecological slope protection structure and its design method

传统堤防工程在发挥社会经济效益的同时,对原有生态系统也产生了一定程度的影响。随着社会与经济的发展,堤防工程建设过程中逐步加强了对生态环境的保护意识。镂空驼峰型生态护坡是一种响应生态堤防建设需要而提出的新型护面结构,具有良好的消浪性能及生态效应。通过波浪断面物理模型试验,针对镂空驼峰型生态护坡设计方法开展了研究,得到结论:1)规则波与不规则波作用下护坡满足自身稳定所需的厚度D均与入射波浪的破碎参数ξ_(p)有关。2)D/H的值随ξ_(p)^(0.5)的增大基本呈线性增大趋势,根据这一特点提出了镂空驼峰型生态护坡稳定厚度计算公式。该结构已在引江济淮工程巢湖口门航道整治工程中得到应用。

While traditional dike projects exert social and economic benefits,they also have some impact on the original ecological system.With the development of society and economy,the awareness of ecological environment protection has been gradually strengthened during the construction of dike projects.Hollow hump ecological slope protection is a new type of slope protection structure proposed for the needs of ecological dike construction and has good wave-eliminating performance and ecological effects.This paper uses wave section physical model tests to research the design method of hollow hump ecological slope protection.The research result shows that:1)Under the action of regular waves or irregular waves,the thickness D required for the slope protection to meet its stability is related to the breaking parameterξ_(p) of the incident wave.2)The value of D/H increases linearly with the increase ofξ_(p)^(0.5),and calculation formula of the stable thickness of the hollow hump ecological slope protection is proposed.This structure has been applied in the channel regulation project in Chaohu Lake of the Yangtze-to-Huaihe Water Diversion.