摘要
根据辽河流域各历史时期的地形地貌、水文气象、洪涝灾情、水利工程建设状况等条件,通过综合分析论证,对该流域治涝系统工程减免水涝灾害的经济效益进行计算与评价。治涝经济效益计算与分析分两个时段进行,1949～1990年及1990～2005年,采用两种不同的方法进行评价。前者采用最大3日降雨频率与灾害面积曲线法;后者采用实际年系列法。整个计算过程中考虑了资金的时间价值。分析结果表明,后一个时段多年平均治涝效益明显高于前一个时段的,说明辽河流域治涝效益自20世纪90年代后呈上升趋势,效益显著。
Based on different periods＇ physiognomy, hydro-meteorological, losses of floods and waterlog, and construction projects situation in the Liaohe River Basin, we calculated and estimated the economic benefits of waterlog control synthetically. We compartmentalized two periods to calculate economic benefits and adopted two methods to analyze benefits in 1949-1990 and 1990-2005. The former we use the method of rainfall frequency of maximal 3-day waterlog area, the latter we use the method of actual year series. At the same time, we take time cost of capital into account. At last, we obtain that benefits of multi-annual average waterlog control in 1990-2004 is obviously higher than in 1949- 1990. It proofs that benefits of waterlog control in Liaohe River Basin starts to rise obviously in the 1990s and has remarkable benefits of waterlog control.
出处
《水力发电》
北大核心
2007年第3期22-25,共4页
Water Power
基金
辽宁省科学基金项目(CT200424)
关键词
治涝效益
防洪体系
评价
辽河流域
benefits of waterlog control
flood control system
evaluation
Liaohe River Basin
