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北疆供水工程是长距离大型引水工程。工程实施过程中,由于部分设计方案、地质、料场、施工条件的变化,项目的增减,国家政策的调整以及价格上涨等因素,测算需增加工程投资,而且工程预备费远不能满足投资增加的要求,致使北疆调水工程难以按批准的概算投资来完成建设任务。因此亟需修改工程概算。以往工程调概是按“缺什么补什么”的“概算法”进行调概,这种方法的优点是简便直观,缺点是节余不能扣回,致使调概投资远远超过工程实际投资,近年来不再使用,于是推出了“合同法”调概的方法。
The northern water supply project is a long-distance large-scale water diversion project. During the implementation of the project, due to factors such as some design proposals, changes in geology, yard and construction conditions, changes in the project, adjustment of national policies and price increases, it is estimated that the project investment needs to be increased and the project preparation fee can not meet the investment increase The requirement that the water transfer project in Beijiang County can hardly complete the construction task according to the approved budget estimate investment. Therefore, it is urgent to amend the project estimate. In the past, the adjustment of the project was carried out according to the “estimate method ” of “what is missing”, the advantage of this method is that it is simple and intuitive, and the disadvantage is that the savings can not be deducted, so that the investment in the adjustment far exceeds the actual project Investment, no longer used in recent years, so introduced “contract law ” approach to regulation.