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在灌溉渠道和排水暗管相间布置的地段内,为设置水稻田,渠道两旁和管顶以上地面各留一定宽度的无积水地带。由于水位差的存在,形成渠道和水田渗漏向暗管汇流的运动条件。研究这一渗流课题,探求计算水田渗漏流量和地下水面线的方法,为合理规划设计稻田地区的灌排工程以及进行科学管理提供参考,具有理论和实践的意义。
In the lot arranged between the irrigation canal and the drainage pipe, there shall be no water-free zone with a certain width reserved for paddy fields, both sides of the canal and above the top of the pipe. Due to the existence of water level difference, the formation of channels and paddy seepage flow to the convergence of the dark conditions. Studying this problem of percolation, exploring methods of calculating seepage flux and groundwater surface of paddy fields, has theoretical and practical significance for the rational planning and design of irrigation and drainage projects in paddy fields and for scientific management.