多孔介质水体渗流特性研究  

Study of Seepage Characteristics of Water in Porous Medium

作　　者：夏兵兵[1] 陈亮[1] 高为壮[1] 胡海星[1] 丁小闯[1] 

机构地区：[1]河海大学土木与交通学院、岩土工程研究所,南京210098

出　　处：《科学技术与工程》2015年第2期284-289,共6页Science Technology and Engineering

基　　金：中央高校基本科研业务费专项资金(2014B04914)资助

摘　　要：针对实际现场承压含水层中水压力传递的滞流效应,通过室内模型实验模拟上游水头变动下,承压含水层中水压力传递的变化;并对其变化规律进行分析研究。在前人研究的基础上,在实验槽中填装4种土样进行实验。对上游突变水头(非稳定渗流)作用下渗流过程水压力传递的滞后性进行研究。观测到上游水头变化与土样中各测点的水头响应有一滞后时间,该传递滞后时间与多孔介质的性质及测量点的间距有关。In view of the actual scene confined aquifer water pressure transmission in stagnation effect, through the indoor model experiment the changes of the upstream water pressure, the change of the water in the confined aquifer pressure transmission was simulated, and analyze its change law research. On the basis of predecessors re- search, in the experimental trough fills four kinds of soil samples in the experiment, the upstream mutation head （ unsteady seepage） process under the action of seepage water pressure transmission lag for research was presented. Observed changes and soil samples of each measuring point in the upstream head head response there is a time lag, the transmission lag time and the properties of-the porous medium and the distance between the measuring point.

关 键 词：滞流 非稳定渗流 多孔介质 水压力传递 

分 类 号：TV131.34[水利工程—水力学及河流动力学]