应用R—C多层网络模拟研究商丘背河洼地试区越流补给作用

我国北方平原地区,农田灌排中涉及的含水层,常常是有越流现象的三层结构含水地层,当处于非开采的天然渗流状态时,第Ⅲ含水层水头高于第Ⅰ含水层水位。进入开采状态后则相反。商丘县李庄乡背河洼地区,属于这种地层结构。研究农田灌溉水资源问题时,对这种地下水的动态特征,应给予足够的重视。本文介绍了应用R—C多层网络模拟研究商丘李庄试区三层结构含水层,越流补给作用的情况.

A Simulation study on the Trans-stream Supplying Actionof the Low-lying Fields along the River of the Shangquipilot Area by Using of the R-C Multi-cirduit System

In the northern plains of our country,the waterlayers concerning with farm irrigation are usually conposed of three-layer structural ones. They are in the natural seepage state when not being developed. The water heads of the layer III is usually higher than that of the I one, but it is just reversed after being developed.The low-lying fields along the river in the Lizhuangxiang of Shangqui County belong to this type of stratum structure. On studying the water resource problem for farm irrigation, the underground water movements of such structure should be fully concerned with. This paper provides a study of this trans-stream supplying action of such three-layer structure by using the R-C multi-circuit system in the Lizhuang pilot area of Shangqui County.