引黄灌区渠道淤积的负面影响与原因分析

Negative influences and causes of canal siltation in the irrigation districts of Yellow River

采用实测资料分析和理论探讨的方法,研究了引黄灌区渠道淤积的负面影响。研究结果表明:引黄灌区渠道淤积加大了渠道清淤难度,加重了排水河道负担,同时清淤堆沙占压了大量耕地,破坏了生态环境;引黄灌区渠道自身几何要素包括比降、断面形态等不合理是造成渠道淤积的根本原因,引水引沙管理不善也是加重渠道淤积的原因之一。

The negative influences of canal siltation in the irrigation districts of Yellow River were studied through the analysis of the measured data and theoretical discussions.The research results show that,the canal siltation raises the difficulty of dredging and the burden of drainage ditches,the dredged silt occupies a large quantity of farmland farmlands,and the ecological environment is destroyed.The unreasonable slopes and canal sections as well as the poor management of water and silt diversion are the essential causes for the canal siltation.