河流生态修复工程安全性分析及评价指标体系构建初探

Preliminary study on the construction of an evaluation index system for safety analysis of river ecological restoration projects

河流生态修复工程应根据河流类型、功能、规模等确定生态修复目的,并确定其安全性标准及设计频率。生态修复工程应对其抗冲刷性、耐久性和耐淹没性等安全性指标进行评价分析。通过综合分析国内外相关设计手册及常规做法,在尽量与防洪标准相一致基础上,提出了安全性评价指标体系,并根据生态修复措施分区布设原则,以维持长期稳定的河流生态系统为目的,对永定河"五湖一线"生态修复工程的措施布局进行了初步分析。

The river ecological restoration projects should determine the ecological restoration purpose according to the river type,function and scale,and then to determine its safety standard and the design frequency.The ecological restoration projects should be evaluated and analyzed for their safety indexes such as erosion resistance,durability and flood resistance.Based on the comprehensive analysis of relevant design manuals and conventional practices in China and abroad,the safety evaluation index system is put forward on the basis of reference with flood control standards.According to the principle of zoning ecological restoration measures,the safety standard of the ecological restoration project of Yongding River is preliminarily evaluated for the purpose of maintaining a long-term stable river ecosystem.