沙壤土地区排水沟道的沟深沟距试验研究

Experiment and Study of Drains Spacing and Depth in the Sandy Loam Region

在低洼易涝地下水位埋深较浅地区,采用适宜的排水措施是排除涝水和降低地下水位的一项行之有效的工程措施。本文通过野外试验,进行水文地质参数(渗透系数和给水度)的确定,并从理论上分析了排水沟的沟深与沟距。根据试验与理论分析认为,在沙壤土地区,合理的沟深约为1.2m,合理的沟距以45～50m为宜。

The drainage measure is a functional way for draining waterlogging and lowering groundwater table in the lower land and shallow groundwater depth and easy waterlogging regions. This paper presents some results for determination of hydro—geologic parameters by field experiment, such as permeability coefficient and specific yield, and spacing and depth of drains. Based on the experiment and analysis, the reasonable depth is about 1.2m and spacing of 45 to 50m in the sandy loam region.