摘要
利用蓄滞洪区的现有洼淀拦蓄洪水,实现其洪水资源化是合理开发和有效利用水资源的重要途径。以天津市大黄堡洼蓄滞洪区为例,建立了蓄滞洪区洪灾风险的评价指标体系,提出了相对风险度的概念及其计算方法,并分析计算了大黄堡洼7种洪水资源利用情景下的综合风险度、相对风险度、损失、经济效益和生态效益。结果表明:与综合风险度相比,相对风险度更为直观形象,便于决策者判断,据其能更及时地做出应对策略,了解损失、效益值受蓄水量和淹没范围的共同影响。最后综合分析风险、损失、效益计算结果,优选出合理的洪水资源利用情景,并分析了其合理性。
Reasonable exploitation of flood in detention basins is one of important way to utilize water resources.Taking Dahuangpu detention basin in Tianjin City as an example,the concept and calculation method for relative risk of flood were presented.Then the risk and relative risk,loss,economic and ecological benefit were calculated for seven utilization scenarions.The results show that relative risk is more visual and easier for decision-maker＇s estimation to make out strategy timely,and both the detention water quantity and submerged area have an influence on loss and benefit simultaneously.At last,the reasonable scenario is selected through combining the results of risk,loss and benefit.
出处
《自然灾害学报》
CSCD
北大核心
2011年第6期99-103,共5页
Journal of Natural Disasters
基金
国家科技支撑计划项目(2006BAB14B05)
天津市科技发展计划项目(OYFSYSF602400)
关键词
蓄滞洪区
洪水资源化
相对风险
损失
效益
detention basin
flood utilization
relative risk
loss
benefit
