Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR022556 |
Assessment of Hydraulic Connectivity of Fractures in Mudstones by Single-Borehole Investigations | |
Ishii, Eiichi | |
2018-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH
![]() |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:5页码:3335-3356 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Assessing the hydraulic connectivity of fractures by single-borehole investigations is crucial to radioactive waste disposal but is still a challenge as such connectivity is difficult to measure directly. This study presents geological, hydrological, hydrochemical, and rock-mechanical data for three faulted/fractured mudstones (the Koetoi, Wakkanai, and Palfris Formations) and proposes a new methodology for assessing the hydraulic connectivity of fractures. The methodology consists of three steps: (a) dividing the formation into two domains with a ductility index (DI) of >2 and < 2 (DI is defined as the effective mean stress normalized to the tensile strength of intact rock), (b) estimating the hydraulic connectivity of fractures by analyzing pressure change obtained by packer tests and geological interpretation, and (c) verifying the estimation using pore pressure and water chemistry/geochemistry. The first step is necessary because the failure mode of damage-zone fractures in fault zones can differ between the DI>2 and DI<2 domains, which may lead to significant differences in the hydraulic connectivity of fractures. During the second step, potential domains in which the hydraulic connectivity of fractures is limited are identified where upward trends, characterized by slopes of similar to 0.5-1.0, are observed during the middle to late period of elapsed time on log-log plots of pressure derivatives. Although the third step can be performed in various ways, this study employs the observation of pressure anomalies and the detection of young external water. Analyses of the three formations demonstrate the applicability and reliability of the proposed methodology. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442351300007 |
WOS关键词 | HIGHEST POTENTIAL TRANSMISSIVITY ; FLUID-FLOW ; FAULT ZONES ; MONTEREY FORMATION ; TOURNEMIRE TUNNEL ; NORTHERN HOKKAIDO ; PERMEABILITY ; EVOLUTION ; HORONOBE ; SHALE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19992 |
专题 | 资源环境科学 |
作者单位 | Japan Atom Energy Agcy, Horonobe Underground Res Ctr, Horonobe, Hokkaido, Japan |
推荐引用方式 GB/T 7714 | Ishii, Eiichi. Assessment of Hydraulic Connectivity of Fractures in Mudstones by Single-Borehole Investigations[J]. WATER RESOURCES RESEARCH,2018,54(5):3335-3356. |
APA | Ishii, Eiichi.(2018).Assessment of Hydraulic Connectivity of Fractures in Mudstones by Single-Borehole Investigations.WATER RESOURCES RESEARCH,54(5),3335-3356. |
MLA | Ishii, Eiichi."Assessment of Hydraulic Connectivity of Fractures in Mudstones by Single-Borehole Investigations".WATER RESOURCES RESEARCH 54.5(2018):3335-3356. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Ishii, Eiichi]的文章 |
百度学术 |
百度学术中相似的文章 |
[Ishii, Eiichi]的文章 |
必应学术 |
必应学术中相似的文章 |
[Ishii, Eiichi]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论