NDLI: Mechanisms of Pore Pressure-stress Coupling which Can Adversely Affect Stress Measurements Conducted in Deep Tunnels

Please wait, while we are loading the content...

An Integrated Study on Physical Properties of a KTB Gneiss Sample and Marble from Portugal: Pressure Dependence of the Permeability and Frequency Dependence of the Complex Electrical Impedance

Permeability-porosity Relationships in Rocks Subjected to Various Evolution Processes

Slow Crack Propagation and Slip Correlations

Pressure Oscillation Effects on the Saffman-Taylor Instability

A Unified Model for Characterisation and Mechanical Behaviour of Rock Fractures

Analytical Model for Permeability Evolution in Microcracking Rock

A Simple Model for Deviations from the Cubic Law for a Fracture Undergoing Dilation or Closure

Scale Effects Related to Flow in Rough Fractures

Triggering of Seismicity by Pore-pressure Perturbations: Permeability-related Signatures of the Phenomenon

Scale Dependence of Hydraulic and Structural Parameters in the Crystalline Rock of the KTB

Mechanisms of Pore Pressure-stress Coupling which Can Adversely Affect Stress Measurements Conducted in Deep Tunnels

Role of Stress-controlled Flow Pathways in HDR Geothermal Reservoirs

Porosity and Thermal Conductivity of the Soultz-sous-Forêts Granite

Interrelations Between Thermal Conductivity and Other Physical Properties of Rocks: Experimental Data

Pure and applied geophysics : Volume 160, Issue 3-4, March 2003

Pure and applied geophysics : Volume 160, Issue 1-2, January 2003

Pure and applied geophysics : Volume 159

Pure and applied geophysics : Volume 158

Pure and applied geophysics : Volume 157

Pure and applied geophysics : Volume 156

Pure and applied geophysics : Volume 155

Pure and applied geophysics : Volume 154

Pure and applied geophysics : Volume 153

Pure and applied geophysics : Volume 152

Pure and applied geophysics : Volume 151

Pure and applied geophysics : Volume 150

Pure and applied geophysics : Volume 149

Mechanisms of Pore Pressure-stress Coupling which Can Adversely Affect Stress Measurements Conducted in Deep Tunnels

Content Provider	Springer Nature Link
Author	Evans, K. Dahlø, T. Roti, J. A.
Copyright Year	2003
Abstract	— Rock-stress measurements performed in boreholes drilled from a tunnel at a depth of 800 m indicate that the minimum stress has been reduced from pre-excavation levels by drawdown in pore pressure. The disturbance to the ambient stresses extends well beyond two tunnel diameters. A model is developed to explain the inferred strong coupling between the pore pressure and minimum stress in the rock mass around the tunnel. The model includes the effects of poro-elasticity of the intact rock and the stiffness of the fractures. For the field situation under study where the fractures are unusually complaint, both poro-elasticity and fracture compliance could be important contributors to the coupling. Changes in pore pressure are shown to produce reductions in minimum stress that are at least 50% of the drop in pore pressure and probably higher. In more general situations, the poro-elastic component is likely to be the more significant of the two mechanisms and alone accounts for a coupling factor of 50%. In this context, the importance of fractures in crystalline conditions probably lies more in their promotion of penetrative drainage than their contribution to coupling coefficient. The results highlight the importance of establishing the extent and distribution of pore pressure drawdown about galleries from which stress measurements are to be conducted.
Starting Page	1087
Ending Page	1102
Page Count	16
File Format	PDF
ISSN	00334553
Journal	Pure and applied geophysics
Volume Number	160
Issue Number	5
e-ISSN	14209136
Language	English
Publisher	Birkhäuser Verlag
Publisher Date	2003-05-01
Publisher Place	Basel
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Delineation of Active Faults, Nucleation Process and Pore Pressure Measurements at Koyna (India)

Fractured Rock Permeability as a Function of Temperature and Confining Pressure

Influence of fluids on deep crustal Jabalpur earthquake of 21, May 1997: Geophysical evidences

Hydromechanics of the Koyna–Warna Region, India

Dynamic Development of Hydrofracture

Triggering of Seismicity by Pore-pressure Perturbations: Permeability-related Signatures of the Phenomenon

Mechanisms of isomorphic substitution in quartz

Compaction of a Rock Fracture Moderated by Competing Roles of Stress Corrosion and Pressure Solution

Mechanisms of metasomatic reactions

Mechanisms of Pore Pressure-stress Coupling which Can Adversely Affect Stress Measurements Conducted in Deep Tunnels

Similar Documents

Delineation of Active Faults, Nucleation Process and Pore Pressure Measurements at Koyna (India)

Fractured Rock Permeability as a Function of Temperature and Confining Pressure

Influence of fluids on deep crustal Jabalpur earthquake of 21, May 1997: Geophysical evidences

Hydromechanics of the Koyna–Warna Region, India

Dynamic Development of Hydrofracture

Triggering of Seismicity by Pore-pressure Perturbations: Permeability-related Signatures of the Phenomenon

Mechanisms of isomorphic substitution in quartz

Compaction of a Rock Fracture Moderated by Competing Roles of Stress Corrosion and Pressure Solution

Mechanisms of metasomatic reactions

Mechanisms of Pore Pressure-stress Coupling which Can Adversely Affect Stress Measurements Conducted in Deep Tunnels