The hydraulic conductivity of sediments: A pore size perspective
The hydraulic conductivity of sediments: A pore size perspective
复制标题
沉积物的水力传导率：孔径视角
DOI：
10.1016/j.enggeo.2017.11.022
复制
发表时间：
2018-01-31
影响因子：
7.4
通讯作者：
Santamarina, J. C.
中科院分区：
文献类型：
--
作者：
Ren, X. W.;Santamarina, J. C.
This article presents an analysis of previously published hydraulic conductivity data for a wide range of sediments. All soils exhibit a prevalent power trend between the hydraulic conductivity and void ratio. Data trends span 12 orders of magnitude in hydraulic conductivity and collapse onto a single narrow trend when the hydraulic conductivity data are plotted versus the mean pore size, estimated using void ratio and specific surface area measurements. The sensitivity of hydraulic conductivity to changes in the void ratio is higher than the theoretical value due to two concurrent phenomena: 1) percolating large pores are responsible for most of the flow, and 2) the larger pores close first during compaction. The prediction of hydraulic conductivity based on macroscale index parameters in this and similar previous studies has reached an asymptote in the range of k(meas)/5
