一、前言在流域规划编制阶段,估价工作甚为烦琐。分析选用定额,计算材料单价,然后再计算单位工程造价,要付出很多人力,又由于工序多,数字多,很容易出现错误,只要其中有一步出错,就会造成全部或局部的返工,同时流域规划的方案多,变动多,往往方案一变,就得从头算起,这样和流域规划本身其他工作的配合,在时间上精度上很不适应。 I. Preface Valuation work is cumbersome in the planning stage of a river basin. Analysis of the use of quotas, calculate the unit price of materials, and then calculate the unit cost of the project, to pay a lot of manpower, but also because of the process more, the number of more prone to error, as long as there is one step error, it will cause all or part of the rework, and basin There are many plans and many changes in planning. Often, when a program is changed, it must start from scratch. This is inaccurate in time and accuracy with other work in the basin planning itself.