| 咸淡水驱替过程中含水介质渗透性变化的试验研究 |
| |
| 引用本文： | 黄翠,郑西来,栾熙明,李永霞.咸淡水驱替过程中含水介质渗透性变化的试验研究[J].水文地质工程地质,2009,36(6):21-25. |
| |
| 作者姓名： | 黄翠 郑西来 栾熙明 李永霞 |
| |
| 作者单位： | 中国海洋大学海洋环境与生态教育部重点实验室； |
| |
| 基金项目： | 国家自然科学基金资助项目，青岛市水利科技资金资助项目 |
| |
| 摘 要： | 在野外水文地质调查的基础上,采集青岛市大沽河下游咸水入侵区砂样,首先对含水介质的粒度和矿物组成进行了分析,然后通过室内砂槽模拟试验,对咸淡水驱替过程中含水介质的渗透性变化规律进行了研究。结果表明,当咸淡水相互驱替时,含水介质的渗透性会发生显著变化,这种变化主要是由于驱替液盐浓度的变化,使得伊利石、高岭石和绿泥石等非膨胀性粘土矿物经释放、迁移、絮凝和沉积,从而重新分布所引起的。含水介质渗透性的变化具有明显的非均质性,即位于距入水处不同水平距离以及不同高度处的含水介质,其渗透性变化规律有所不同。
|
| 关 键 词： | 含水介质 咸淡水驱替 渗透系数 粘粒释放 |
Experimental study of changes in hydraulic conductivity of aquifer medium in salt-freshwater displacement process |
| |
| HUANG Cui,ZHENG Xi-lai,LUAN Xi-ming,LI Yong-xia.Experimental study of changes in hydraulic conductivity of aquifer medium in salt-freshwater displacement process[J].Hydrogeology and Engineering Geology,2009,36(6):21-25. |
| |
| Authors: | HUANG Cui ZHENG Xi-lai LUAN Xi-ming LI Yong-xia |
| |
| Affiliation: | Key Lab of Marine Environmental Science & Ecology of the Ministry of Education, Ocean University of China,Qingdao 266100,China |
| |
| Abstract: | Based on field geohydrological investigation, grain size and mineral compositions of the aquifer media collected from the downstream of Dagu River were analyzed. With sand tank laboratory experiment, the change law in hydraulic conductivity of aquifer medium in salt-freshwater displacement process was investigated. The result shows that there are significant changes in hydraulic conductivity of aquifer medium when the saltwater and freshwater displace each other. The reason for changes of hydraulic conductivity is that the migration, flocculation, sedimemt of released clay particles such as illite, kaolinite and chlorite ocur due to salinity changes. Changes in hydraulic conductivity are irregular. In various horizontal distances from water let and various heights, the change law in hydraulic conductivity of aquifer media is obviously different. |
| |
| Keywords: | aquifer medium salt-freshwater displacement hydraulic conductivity release of clay particles |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《水文地质工程地质》浏览原始摘要信息 |
|
点击此处可从《水文地质工程地质》下载全文 |
|
