Measurement of 3-D hydraulic conductivity in aquifer cores at in situ effective stresses

被引：13
|
作者：
Wright, M [1 ]
Dillon, P [1 ]
Pavelic, P [1 ]
Peter, P [1 ]
Nefiodovas, A [1 ]
机构：
[1] CSIRO, Land & Water, Glen Osmond, SA 5064, Australia
来源：
GROUND WATER | 2002年 / 40卷 / 05期
关键词：
D O I：
10.1111/j.1745-6584.2002.tb02535.x
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
An innovative and nondestructive method to measure the hydraulic conductivity of drill core samples in horizontal and vertical directions within a triaxial cell has been developed. This has been applied to characterizing anisotropy and heterogeneity of a confined consolidated limestone aquifer. Most of the cores tested were isotropic, but hydraulic conductivity varied considerably and the core samples with lowest values were also the most anisotropic, Hydraulic conductivity decreased with increasing effective stress due to closure of microfractures caused by sampling for all core samples. This demonstrates the importance of replicating in situ effective stresses when measuring hydraulic conductivity of cores of deep aquifers in the laboratory.
引用
收藏
页码：509 / 517
页数：9
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