Cities , economic development zones , industrial and mining areas and important state agricultural production bases under the threat of floodwater should be protected as key areas and necessary flood control works constructed 受洪水威胁的城市、经济开发区、工矿区和国家重要的农业生产基地等，应当重点保护，建设必要的防洪工程设施。
Through the studies on temperature control , we shorten the total length of axis of the floodgate of releasing floodwater by 5 . 5 m , economize more than 10000 m3 concrete , convert more than 3 million yuan 可提前发电约5亿kw ，折合人民币约1亿元。 4 .通过温控研究，缩短了泄洪闸轴线长度5 . 5m ，节约混凝土方量10000多方，折合人民币约300多万元。
Taking the floodwater utilization of three gorges reservoir as an example , the criteria system was proposed based on multi - alternatives combined with the flood limit water level of three gorges reservoir which satisfied the safety restriction 以三峡水库洪水资源化问题为背景，对三峡水库的多种汛限水位组合方案，建立了多目标决策运行的指标体系。
By using it , we find many big and rich metal ore beds , resolve floodwater and so on . by these effective practice achievements , it proves that transient electromagnetic methods has wide prospect of application and development 实践结果找到了多个大而富的金属矿床，并解决了泄洪防涝的燃眉之急，从理论和实践上证明了瞬变电磁法有着广泛的应用和发展前景。
In the general design and analysis methods for problems of the breakwater stability , the concept of compositive safety factors is used usually . however , floodwater , storm wave and beach erosion as well as properties of soil medium are always random , which may have uncertainties 在防浪堤坝的设计中，传统的安全性能分析方法采用综合的安全系数概念，但洪水、风浪、河道冲刷、土力学特性等因子都是随机性的，具有一定的不确定性。
Under the worse situation of worldwide shortage of fresh water , china , as one of the 13 countries with lowest per capita occupancy in water resources , has 330 cities are short of water ; an average of 26 . 68 million hectares farmland in drought annually but also a loss of billions of rmb properties due to the floodwater every year ; 82 % rivers and lakes suffered from pollution in different degree ; 2800 km river without any aquatic ; 25 , 000km ' s water unqualified by fishery water quality standard 在全球淡水资源日益紧张的形势下，我国作为世界人均水资源13个贫困国家之一，有330个缺水城市，每年平均有4亿亩农田受旱，每年洪灾要造成数以千亿的经济损失，有82 %的江河、湖泊受到不同程度的污染， 2800多公里的河段鱼虾基本绝迹， 2 . 5万公里的河流水质超过渔业水质标准。
With the economics development , population explosion and accelerating urbanism , we confront the most serious challenge in water sustainable utilization , floodwater , drought , water pollution , soil erosion etc . sichuan government summarizes the historic and current experiences , promoting the strategy of water - control system by strengthening < wp = 7 > the basic position of irrigation works and water conservancy in industry 随着经济的发展、人口增加和城市化进程的加快，水的可持续利用面临着更严竣的挑战，干旱、洪灾、水污染、水土流失制约着社会经济的发展，威胁着我们的生存。必须加强水利的基础产业地位，才能保持经济和社会的持续发展。
Sichuan is one of the agricultural province , locates in the area between the continental climate and oceanic climate , the distribution of precipitation is always disproportional due to the influence of atmosphere circumfluence , the existence of drought and floodwater plus water pollution have produced huge menace to agriculture , water resources utilization , soil erosion and even the life and properties of human being 解决水资源的诸多问题，是摆在全党、全社会和全国人民面前一项刻不容缓的重大战略任务。四川作为贫水国的一个农业大省，由于地处海洋性气候与大陆性气候交接地带，受大气环流影响，降水时空分布不均，水旱灾害极为频繁，尤其是干旱对农业生产的威胁最大。
The bingling ( si gou xia ) hydropower station is a series of power stations on the yellow river , in order to the expropriation and the emigration be reduced , after studied the relation of water level and flux of the bingling hydropower station on the taping dam location , under the different running circumstances of the liujiaxia reservoir , to located the bingling hydropower station on the head of the liujiaxia reservoir , and keeping the total installation and the generated energy not be changed all made use of the floodwater of the liujiaxia reservoir 摘要黄河炳灵（寺沟峡）水电站是黄河干流上的一个梯级电站，为了减少征地移民损失，经对炳灵水电站（塔坪坝址）尾水断面在刘家峡水库不同运行方式下的水位与流量关系进行分析研究，在总装机和年发电量基本不变的情况下，充分利用刘家峡水库汛限水位，将电站枢纽选址在其电站库尾内。
