地下水流系统分异的试验演示及其意义

地下水在渗透介质中的流动是连续的,受补给与排泄条件的影响,在同一渗流场中会出现若干水流系统.称为地下水流的分异。通过简易的试验装置,可以容易地模拟这种水流分异的情形。相应试验如下:在均质各向同性的渗透介质中.保持顶部自由水面补给边界的水头不变,在不同排泄条件下、存在弱透水层、相对隔水体及放置局部加热装置的情况下,分别得到了地下水流分异的情形。结果表明:水流在不同渗透介质间确实存在折射现象;在弱透水体或相对隔水体的边缘.水流具有加强、聚集的性质,即渗透流场中存在强径流带;与流场总体流向不一致的方向上,会出现向隔水体靠近的“浮流”现象;水流加热后.其径流速度明显抽快。...

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Bibliographic details
Volume: 32
Main Author: 高宗军
Format: Journal Article
Language: Chinese
Place of publication: 山东科技大学地质科学与工程学院,山东青岛,266590 2013
published in: 山东科技大学学报:自然科学版 Vol. 32; no. 2; pp. 17 - 24
Data of publication: 2013
ISSN: 1672-3767
Alternate Title: Experimental Demonstration and Significance of Groundwater Flow System Differentiation
Classification Codes:
Bibliography: Gao Zongjun (College of Geological Science& Engineering,Shandong University of Science and Technology Qingdao,Shandong 266590, China)
37-1357/N
groundwater; infiltration medium; experiment; groundwater flow fractionation
Groundwater has the continuous flow in the infiltration medium and because it is affected hy recharge and discharge conditions,there appear lots of flow systems in the same seepage field,called groundwater flow fractionation. Through the simple test apparatus, the case of such flow fractionation will be easily simulated. The corresponding test was completed as follows. In homogeneous isotropic permeability media, the head of the top of tHe free water surface was kept to recharge boundary unchanged; under the conditions of different discharge the presence of the aquitard, relatively impermeable body and placed the local heating device, the groundwater flow fractionation situation was obtained respectively. The results show that refraction phenomenon does exist in different permeable media of grou
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