对圩垸泵站群技术更新改造工程进行国民经济评价

Rehabilitation of the pumping station system in embankment surrounded region and its assessment from the viewpoint of the national economy

鉴于SL72—94《水利建设项目经济评价规范》对泵站技术更新改造工程经济评价未作专门的阐述,已发表的文献虽有"改、扩建工程"项目的经济评价论文,但未见到"技改,特别是泵站技改"国民经济评价的研究论文.特以湖北省云梦县府南圩垸农田灌溉与排水两用泵站群技术更新改造工程为研究对象,运用捆扎法对其进行评价,可使这类项目更新改造评价指标更加切合实际,能达到SL72—94《水利建设项目经济评价规范》行业标准,与采用动态法计算经济内部收益率(EIRR)、经济净现值(ENPV)、效益费用比(EBCR)、投资回收期Pt等指标评价体系均很协调,操作简单方便.

The rehabilitation of a pumping station and its economic assessment are not specified in the Specifications on Economic Assessment of Water Conservancy Projects . Although many literatures published have economic assessment articles, but most of them do not involve the economic assessment of rehabilitation projects, in particular that of a pumping station. The author has used as the study case the pumping and draining station system in embankment surrounded region to review by Tie-up Method the indexes of rehabilitation projects. The method developed will be capable of realistically evaluating these indexes of rehabilitation to the satisfaction of the Specifications, published by the MWR. The method of dynamic calculation comprises the rate of economic internal benefit (EIRR) , economic net present value (ENPV) , ratio of economic benefits to charges(EBCR ) and period of investment recovery P_t . This system of evaluation is very coordinated and easier to be used.