含有淤泥层边界的两层含水层系统的水头波动

考察了向海底有限延伸的滨海含水层系统中由海潮及其载荷效率引起的地下水头波动.该系统由承压层和它下面的弱透水层所组成,并且向海底有限延伸,在海底露头处被一个半透水的淤泥层覆盖.本文综合考虑了弱透水层的越流、弹性储水、载荷效应以及来自淤泥层的越流对承压含水层的影响,并得出了相应的解析解.可以发现含水层下面的弱透水层的越流与弹性储水对承压含水层的水头波动也产生了很大的影响.

Groundwater-Head Fluctuations in Coastal Confined Two-Layer Aquifer System with Submarine Outlet-Cappping

This paper considered the tide-induced head fluctuations in coastal confined two-layer aquifer system.The system comprises a confined aquifer and a semi-permeable layer beneath the confined aquifer,which extend under the sea with a finite length L.The submarine outlet of the aquifer is covered with a skin layer("outlet-capping").Mathematical model and analytical solution are given.In this model,all the effects of the parameters such as the elastic storage and the leakage of the semi-permeable layer,the tidal loading efficiencies of the semi-permeable layer and the confined aquifer,the offshore length of the aquifer,the leakage of the outlet-capping and the confined aquifer's tidal propagation on the confined aquifer were taken into account.A reality can be found that the lower semi-permeable layer's elastic storage can influence the groundwater head fluctuation significantly by it's leakage.