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如今溢洪道通常按比其使用期限内可能遇到的更大的洪水来进行设计，因此必须研究一些新的溢洪道设计方法，使得在满足现代安全准则的同时，节省大坝建设资金。介绍在新的溢洪道设计中采用泄洪保险闸门系统（有时与常规方法联合使用，用于泄放部分洪水）。最近的研究表明，采用这种方法可以节省5％～10％的工程总投资。
Nowadays, spillways are often designed with more flooding than they may encounter over the life of the spillway. Therefore, some new spillway design approaches must be studied to save the cost of dam construction while meeting the modern safety standards. INTRODUCTION Flood release gate systems are used in new spillway designs (sometimes used in conjunction with conventional methods for discharge of some floods). Recent research shows that using this method can save 5% ~ 10% of the total project investment.