摘要
利用竖管法毛细上水试验测量风积砂毛细上升高度、速率与时间的关系,运用Terzaghi经典公式与N.Lu和W.J.Likos解析法求解给定时间对应的毛细上升高度,并利用实测结果对比分析两种公式对风积介质的适用性。得到如下结论:①砂子粒径越小,其最大毛细上升高度越大;②解析法对风积介质求解的精确度较Terzaghi公式高。
This paper uses the standpipe capillary rise test to study the relationship among the capillary water rising height,rate of aeolian sand and time.The Terzaghi classical formula and N.Lu and W.J.Likos analytic method are used to calculate the corresponding capillary rise height under given time.The measured results are used to assess the accuracy of the two formulas for aeolian medium.It is concluded that:①the smaller the sand particle size,the higher the capillary rise height.②the analytic method has higher accuracy than the Terzaghi classical formula for solving Aeolian medium.
出处
《节水灌溉》
北大核心
2014年第6期26-28,31,共4页
Water Saving Irrigation
基金
国家自然科学基金面上项目资助(41072183)
