水平土柱法测定非饱和土壤水力扩散度实验

Experiment of Determining Unsaturated Soil Hydraulic Diffusivity in Horizontal Soil Column Method

水力扩散度是非饱和土壤水分运动的一个重要指标,对于地表水—土壤水—地下水转化规律的研究、农田土壤水分预测预报、区域水盐运动规律的研究等,它是一个必不可少的参数。介绍了水平土柱法测定土壤水力扩散度的实验方法、实验装置和实验步骤,并对某区土样详细记录了试验的全过程和结论数据,并对实验结果进行了分析比较。

The hydraulic conductivity,an important indicator of unsaturated soil water movement,is an essential parameter on the study for surface water—soil water—groundwater transformation,soil moisture forecast and regional water and salt movement.The experimental method,experimental apparatus and experimental procedures are described to measure the hydraulic diffusivity of soil based on horizontal soil column method in the study.As a study sample,the whole process and conclusion data of the test are also recorded in detail,and the test results are compared and analyzed at the same time.