论文部分内容阅读
人民引泾灌区的渠道衬砌工程,随着灌区农田基本建设的开展,近几年来有了很大的发展,对提高灌溉效能,改变灌区面貌,促进灌区农业增产,起到了一定的作用。现结合多年实践,对有关渠道衬砌的各项问题,进行初步总结,以便改进提高。一、渠道衬砌效果 (一)减少了渠道输水渗漏损失。1964年6月在南干渠用静水测渗法试验结果,用混凝土砌护的渠道与未砌护前对比,防渗效果为80.1％(按南干渠流量14秒立米推算),每公
People lining the Jingjing Irrigation District of the channel lining project, with the development of farmland infrastructures in the irrigation area, in recent years has made great progress, to improve irrigation performance, change the face of irrigated areas, and promote agricultural irrigation yield, played a certain role. Now combined with many years of practice, the lining of the various issues related to a preliminary summary, in order to improve and improve. First, the effect of channel lining (A) to reduce the loss of channel water seepage. In June 1964 in the South Main Canal with still water infiltration test results, with the concrete lining of the pipeline protection and did not match the pre-contrast, seepage prevention effect of 80.1% (according to the southern trunk flow of 14 seconds cubic meter projections), each public