An analytical solution for leakage rate and depletion of aquitard influenced by the delayed yield phenomenon
An analytical solution for leakage rate and depletion of aquitard influenced by the delayed yield phenomenon
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DOI：
10.1007/s12665-015-4114-3
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发表时间：
2015-03
影响因子：
2.8
通讯作者：
Zhaofeng Li;Zhifang Zhou
中科院分区：
文献类型：
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作者：
Zhaofeng Li;Zhifang Zhou
延迟屈服现象（DYP）发生在弱透水层的水位下降不再处于平衡状态时，由于相邻含水层水位的先前变化。在这项研究中，一个分析解决方案，以确定在任何时候，在任何一点的水位在弱透水层，其中的水位是不平衡的，在初始时间，和含水层的水位直接上方和下方的弱透水层是随时间变化的分布。基于弱透水层水位降深的变化，给出了任意时刻、任意位置的水流流速解析解。此外，还研究了DYP对弱透水层渗漏率和耗竭的影响。随后的分析和数值解的比较表明，他们是在良好的协议。本文的研究成果对今后地下水运动和水收支、海平面上升、溶质运移、热传导、地面沉降等环境问题的研究具有重要意义。
Delayed yield phenomenon (DYP) occurs when the drawdown of an aquitard is no longer in equilibrium owing to previous changes in the level of water in adjacent aquifers. In this study, an analytical solution to determine the distribution of the drawdown at any time and at any point in an aquitard, in which the water level was not in equilibrium at the initial time, and the water level of the aquifers immediately above and below the aquitard was time dependent was developed. The analytical solution for the flow rate at any time and location was presented based on variations in drawdown in the aquitard. In addition, the effects of the DYP on the leakage rate and depletion of the aquitard were studied. Subsequent comparison of the proposed analytical and numerical solutions revealed that they were in good agreement. The results of this study will be useful to future studies of groundwater flow and environmental problems, such as water budgets, rising sea levels, solute transport, heat conduction and ground subsidence.