截流倍数是指合流制排水系统在降雨时截留的雨水量与旱流污水量之比值。不从截流井泻出的雨水量，这个指定倍数称为截流倍数。
Analyzed combined sewer system, proposed a simulation and optimization based method to determine interception ratio. Interception ratio is a important factor.
提出了基于模拟优化技术的确定截流倍数的方法。
参考来源 - 城市水环境系统控制决策支持技术研究The calculation method of interception ratio of the combined drainage system with interception facility was comprehensively analyzed in this thesis, and the selection of interception ratio for each county was studied by that method.
论文综合分析了截流式合流制排水系统截流倍数的计算方法,并应用该方法对各区县截流倍数的选择进行了研究。
参考来源 - 延安黄土高原沟谷川道地区排水特征及设计优化研究It is suggested that the intercepting ratio set as 2 is most cost-effective. In addition,storage of the initial runoff of 10 to 15 mm for later treatment can reduce 70% to 80% of rainfall runoff pollution.
建议截污工程的截流倍数（n0）宜为2,进一步采取工程措施截流初期1015 mm的径流进行处理,对降雨径流污染的控制可达到70%80%。
参考来源 - 合流制排水系统溢流污染水量、水质分级控制方案·2,447,543篇论文数据，部分数据来源于NoteExpress
分析截流倍数的影响因素，探讨合理的截流倍数计算方法。
Analyzing effect factor and study reasonable algorithms of interceptive multiple.
确定截流倍数要考虑的因素比较多，如经济、环境、水文等，很难进行准确定量分析。
Rather more factors such as economic, environment and hydrology should be taken into account to confirm sewage closure multiplication factor and can hardly be quantitative analyzed.
同时介绍了截流倍数、截流井、截流量、防倒灌等几个关键问题的设计原则及应注意的事项。
The design principles of intercepting ratio, intercepting well, intercepting sewage flow, sewage backflow prevention and so on, as well as the matters needing attention are a.
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