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人民胜利渠灌区骨干渠道多为地上河或半地上河,堤防为粉质沙土,因渠道淤积大多渠道都在设计的超高部位运行,病险工程多,渠道决口频繁;且骨干渠道防渗衬砌率不足30%,大部分已老化或损坏,渠道渗漏严重,渠系水利用系数低,输水安全性差、隐患多。随着各行各业用水要求的不断增加,水资源供需矛盾日益突出,可用于灌溉的水量呈现减少趋势,采取渠道衬砌等防渗措施是解决水资源供需矛盾的重要措施。
Most of the key tributaries of the drainage area for people’s victory are ground rivers or semi-ground rivers, and the dike is silty sand. Most of the channels are silted up and run in the ultra-high places of the design. There are many dangerous projects and frequent channel breaches. The rate is less than 30%, most of them have been aged or damaged, the channel leakage is serious, the coefficient of water utilization of canal system is low, the safety of water conveyance is poor, and there are many hidden dangers. With the increasing demands of water in all walks of life, the contradiction between supply and demand of water resources has become increasingly prominent. The amount of water available for irrigation shows a decreasing trend. Taking canal lining and other anti-seepage measures is an important measure to solve the contradiction between supply and demand of water resources.