Physical simulation of aquifer compression due to groundwater fluctuation

Wen-Jong Changt, Shih-Hsun Chou, An-Bin Huang

研究成果: Article

3 引文 斯高帕斯(Scopus)

摘要

To investigate the compression of granular aquifer induced by fluctuations of pore pressure, series of repeated pore pressure induced loading-unloading tests on specimens made of Ottawa sand mixed with mica were conducted in a K-o-triodal consolidation system. To simulate the stress paths in the field, the vertical displacements of soil specimens were monitored while maintaining a constant total vertical stress and applying sinusoidal fluctuations of pore pressure to specimens under K-o conditions. Shakedown theory is applied to interpret the testing data. The paper describes the laboratory setup, test procedure and findings from the test results. The results reveal that a shakedown behavior existed in saturated granular specimens and the accumulated permanent axial strains are 5 to 56 times of the values for conventional, monotonic loading. The finding evidently proves the significance of aquifer compression to ground subsidence due to repeated ground water fluctuations.
原文English
頁(從 - 到)157-164
頁數8
期刊Engineering Geology
231
DOIs
出版狀態Published - 14 十二月 2017

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