气候变化领域集成服务门户(CCPortal): Stress Effects on Flow and Transport in Three-Dimensional Fracture Networks

CCPortal

DOI	10.1029/2020JB019754
	Stress Effects on Flow and Transport in Three-Dimensional Fracture Networks
	Sweeney M.R.; Hyman J.D.
发表日期	2020
ISSN	21699313
卷号	125 期号:8
英文摘要	We investigate the effects of various external stress regimes on fracture apertures, fluid flow, and solute transport in three-dimensional fracture networks. We use well-established geomechanics equations coupled with discrete fracture network modeling to characterize changes in primary flow paths within a complex network as a function of stress magnitude and orientation. These changes manifest in the alterations of the fluid flow field and are measured in terms of Eulerian and Lagrangian flow observables including solute transport, which is a key problem in many hydrologic applications. Changes in primary flow paths affect the solute transport in the network by promoting anomalously early arrival or long tailing behavior. However, early time arrival is not ubiquitous in anisotropically stressed networks and in most cases there is a delayed arrival of solute, which is attributed to (i) the presence of low-velocity zones normal to the flow direction, (ii) the angle between flow direction and major compressive principal stress directions, and (iii) changes in the primary flow paths (i.e., increases in tortuosity and active network structure). Overall, flows become more channelized in anisotropically stressed fracture networks than in unstressed and isotropically stressed networks. ©2020. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187657
作者单位	Computational Earth Science Group (EES-16), Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, United States; Center for Nonlinear Studies, Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM, United States
推荐引用方式 GB/T 7714	Sweeney M.R.,Hyman J.D.. Stress Effects on Flow and Transport in Three-Dimensional Fracture Networks[J],2020,125(8).
APA	Sweeney M.R.,&Hyman J.D..(2020).Stress Effects on Flow and Transport in Three-Dimensional Fracture Networks.Journal of Geophysical Research: Solid Earth,125(8).
MLA	Sweeney M.R.,et al."Stress Effects on Flow and Transport in Three-Dimensional Fracture Networks".Journal of Geophysical Research: Solid Earth 125.8(2020).