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一、前言把稀迂洪水同常迂洪水加以区别,采用简易的非常溢洪道能大量降低泄洪设施的造价,这一措施在国外已有30多年历史。目前采用较多的简易非常溢洪道有漫溢式、药室爆破式和水力冲开式几种。漫溢式非常溢洪
I. Preface Differentiating the weaker floods from the usual floods, the use of simple very spillways can greatly reduce the cost of flood discharge facilities. This measure has been in foreign countries for over 30 years. At present there are more simple and very spillway spill-type, pharmacy and hydraulic burst several open-type. Spill very spillway