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2019 Vol.29, Issue 1 Preview Page

Technical Note

A Technical Review of Hydromechanical Properties of Jointed Rock Mass accompanied by Fluid Injection

유체 주입을 동반한 절리 암반의 수리-역학 특성 평가에 대한 고찰

Hyung-Mok Kim1,2*
,
Yves Guglielmi2
,
Jonny Rutqvist2
,
Eui-Seob Park3
김 형목1,2*
,
Yves Guglielmi2
,
Jonny Rutqvist2
,
박 의섭3
1,2Sejong University
2Lawrence Berkeley National Laboratory
3Korea Institute of Geoscience and Mineral Resources
1,2세종대학교 에너지자원공학과
2Lawrence Berkeley National Laboratory
3한국지질자원연구원
* Corresponding Author
28 February 2019. pp. 12-29
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Abstract

Permeability and its change due to a fluid injection in jointed rock mass is an important factor to be well identified for a safe and successful implementation of Carbon Capture and Sequestration (CCS), Enhanced Geothermal System (EGS) and Enhanced Oil Recovery (EOR) projects which may accompany injection-induced hydromechanical deformation of the rock mass. In this technical report, we first reviewed important issues in evaluating initial permeability using borehole hydraulic tests and numierical approaches for understanding coupled hydromechanical properties of rock mass. Recent SIMFIP testing device to measure these hydromechanical properties directly through in-situ borehole experiments was also reviewed. The technical significance and usefulness of the device for further applications was discussed as well.

Keywords
Permeability
Fluid injection
Coupled hydraluic-mechanical properties
Borehole experiments
In-situ test devices

최근의 이산화탄소 심지층 처분, 인공지열저류층 형성 및 발전, 원유회수증진 사업 등에는 고압의 유체를 주입하는 과정이 수반되고 이들 사업의 안전하고 성공적인 수행을 위해서는 대상 부지 절리 암반의 투수 특성 및 주입압에 의한 역학적 변형에 기인한 변화를 정확하게 평가하는 것이 중요하다. 본 고에서는 절리 암반 수리-역학 특성 파악을 위한 해석적 및 실험적 평가 방법에 대해 검토하였다. 먼저 유체 주입 전 절리 암반 초기 투과 특성 및 수리-역학 특성 평가에 고려해야 할 기술요소를 분석하고 현장 시추공 실험을 통해 이들 수리-역학 특성을 직접 측정하기 위한 최근의 SIMFIP 실험장치의 특징 및 활용방안에 대해서도 검토하였다.

키워드
투과계수
유체 주입
수리-역학 특성
시추공 실험
현장실험장치
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Information
  • Publisher :Korean Society for Rock Mechanics and Rock Engineering
  • Publisher(Ko) :한국암반공학회
  • Journal Title :Tunnel and Underground Space
  • Journal Title(Ko) :터널과 지하공간
  • Volume : 29
  • No :1
  • Pages :12-29
  • Received Date : 2019-02-12
  • Revised Date : 2019-02-20
  • Accepted Date : 2019-02-21
  • DOI :https://doi.org/10.7474/TUS.2019.29.1.012
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