YANG Liu-yue,YAN Bao-wen.Study on Movement Characteristic of Seepage Water in the Loess[J].Research of Soil and Water Conservation,2013,20(06):6-9.
黄土中渗流水的运动特征研究
- Title:
- Study on Movement Characteristic of Seepage Water in the Loess
- Keywords:
- penetration and diffusion; structure parameters; groundwater; loess
- 分类号:
- P641.2
- 摘要:
- 现代黄土所具有的结构非均质性是地质历史时期渗流水不断入渗作用的结果。以均质黄土试样为例，以孔隙比结构性参数mp为指标，采用渗流槽实验装置研究黄土中水的下渗，对比分析了单点供水和多点供水情况下，非饱和均质黄土中渗流水的渗透运动特征以及垂向渗流与黄土结构参数之间的关系。研究结果表明，纵向渗流速度以1～4的倍比大于横向渗流速度，纵向渗流速度与横向渗流速度的比值越大，对黄土结构的影响越大，纵向渗流速度对现代黄土结构的成因贡献较大，但横向渗流速度的作用也不可忽视。
- Abstract:
- The structural heterogeneity of current loess is the result of continuous infiltration of seepage water during the eras of geological history. We took homogeneous loess as the case, void ratio structure parameter mp as indicators and seepage canal as devices to study percolation in loess. Study on movement characteristic of seepage water in unsaturated homogeneous loess and the relationship between vertical seepage and structural parameters mp under single and multiple point water supply was carried out. According to the results, the longitudinal flow velocity is 1~4 times more than horizontal flow velocity; the lager the ratio of longitudinal and horizontal velocity is, the greater the influence on the structure of loess is; the longitudinal flow velocity makes a great contribution to current loess structure, however, the effect of the horizontal flow velocity cannot be ignored.
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备注/Memo
收稿日期:2013-04-01;改回日期:2013-05-02。
基金项目:中央直属高校基础科研费项目（QN2009090）
作者简介:杨柳悦(1988-),女,内蒙古乌兰察布市人,硕士研究生,主要研究方向:水资源与水环境保护。E-mail:lyyyang@yeah.net
通讯作者:严宝文(1970-),男,陕西汉中人,博士,教授,硕士生导师,主要研究方向:农业水土环境与保护。E-mail:yanbaowen2006@yahoo.com