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滴灌技术是保证植物生长效果的有效手段,这种方式具有节水效果显著、不破坏土壤结构、运行费用低等优点。为研究公路边坡坡度对滴灌渗流及滴灌喷头间距的影响,本文采用基于Richards方程的有限元软件HYDRUS,对不同坡度的边坡滴灌渗流进行了数值分析。研究结果表明:随着坡度的增加浸润线不对称的趋势增加;坡度小于35°时,平均浸润增长幅度小于0.097cm/(°),当坡度大于35°时,浸润范围随坡度增加而快速增长,其平均增长速率为0.7cm/(°)。基于曲线拟合和归一化方法建立了以滴灌时间和边坡坡度为变量的壤土浸润函数。
Drip irrigation technology is an effective way to ensure the plant growth effect. This method has the advantages of significant water saving effect, no damage to soil structure and low operation cost. In order to study the effect of road slope gradient on drip irrigation and drip irrigation nozzle spacing, HYDRUS, a finite element software based on Richards equation, was used to analyze the drifting seepage flow of slopes with different slopes. The results show that the trend of asymmetry of infiltration line increases with the increase of slope, and the average increase of infiltration is less than 0.097 cm / (°) when the slope is less than 35 °. When the slope is greater than 35 °, the infiltration range increases rapidly with the increase of slope , The average growth rate of 0.7cm / (°). Based on the curve fitting and normalization methods, the infiltration function of loam with the drip irrigation time and slope gradient as variables was established.