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根据许多工程的统计,认为泄洪建筑物的费用常常占整个枢纽建筑物费用的40～50％,而消能工的费用在泄洪建筑物中又占40～50％,所以泄洪建筑物的设计是一个必须重视的问题。目前我区已建和在建的坝高15米以上的拱坝,已有60余座,其中采用坝身泄洪的有43座,占71.7％;坝外泄洪的有15座,占25％;坝身坝外联合泄洪有2座,占3.3％。本文拟对我区的拱坝泄洪建筑物设计及设计中存在的问题进行论述,以供讨论、参考。
According to statistics of many projects, it is considered that the cost of flood discharging structures often accounts for 40% to 50% of the cost of the entire hub building and the cost of energy dissipators is 40% to 50% of that of flood discharging structures. Therefore, the design of flood discharging structures A problem that must be emphasized. At present, there are more than 60 arch dams which have been built and under construction in our district with a height of 15 meters or more. Among them, 43 are flood-damming using dams, accounting for 71.7%; and 15 are flood discharge outside dams, accounting for 25% of the total; There are 2 flood discharges outside the dam body, accounting for 3.3%. This article intends to discuss the existing problems in the design and design of arch dam spillway buildings in our district for discussion and reference.