標題: | Physical simulation of aquifer compression due to groundwater fluctuation |
作者: | Chang, Wen-Jong Chou, Shih-Hsun Huang, An-Bin 土木工程學系 Department of Civil Engineering |
關鍵字: | Ground subsidence;K-o-triaxial consolidation;Granular soil;Shakedown behavior;Compressibility |
公開日期: | 14-十二月-2017 |
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. |
URI: | http://dx.doi.org/10.1016/j.enggeo.2017.10.012 http://hdl.handle.net/11536/144310 |
ISSN: | 0013-7952 |
DOI: | 10.1016/j.enggeo.2017.10.012 |
期刊: | ENGINEERING GEOLOGY |
Volume: | 231 |
起始頁: | 157 |
結束頁: | 164 |
顯示於類別: | 期刊論文 |