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针对用评价建设项目的常规方法去评价小流域坝系工程的经济合理性,虽然是十分必要但评价结果与实际出入较大的实际情况,以近几年宁夏小流域坝系工程可行性研究工作实践为依据,提出了小流域坝系工程经济合理性简易评价指标,即坝系工程控制率、拦沙率、蓄水率及利用率、淤地面积与控制面积比率、工程受益程度等5项宏观性经济指标和单位库容投资、单位拦泥投资、单位淤地面积投资、单位工程量投资、单位工程量置换库容等5项微观性经济指标。应用结果表明,用简易的评价指标体系可以快速、直观地判别坝系工程的经济合理性。
In order to appraise the economic rationality of dam system in small watershed with the conventional method of appraising construction project, though it is very necessary, the evaluation results and the actual situation with large discrepancy are large. Taking the feasibility study of dam system in Ningxia Small Watershed in recent years As the basis, a simple evaluation index of economic rationality of dam system of small watershed was put forward, that is, five macroscopic indexes of dam system control rate, sediment-holding rate, water storage rate and utilization rate, siltation area and control area ratio, project benefit degree and so on Economic indicators and unit storage capacity investment, unit silos investment, unit silt investment, unit project investment, unit volume replacement capacity and other five micro-economic indicators. The application results show that the economic rationality of dam engineering can be quickly and intuitively determined by simple evaluation index system.