TUNNELS AND UNDERGROUND STRUCTURES IN ROCK

SECTION 1 - JULY 15 & 16, 2013

GENERAL CONSIDERATIONS AND REQUIREMENTS FOR TUNNELS AND UNDERGROUND PROJECTS

Section 1(A) - General Considerations
July 15 - 9 a.m. - Noon (Dr. C. Yuen)

(a)    Site investigation, field and laboratory testing

(b)    Rock mass classifications

Section 1(B) - Measurement of Strength, Deformation and Time-Dependent (Swell) Parameters of Rock
1:15 p.m. - 4:30 p.m. (Drs. S. Micic and K.Y. Lo)

(a)    Uniaxial compression, triaxial, direct tension, point load and Brazilian tests

(b)    Simple shear test for rock joint clay seams and gouge materials

(c)    Swell tests (free swell, semi-confined, null swell tests)

(d)    Interpretation and recommendation for design parameters

Section 1(C) - Fundamental Concept of Stress and Deformation Around Underground Openings
July 16 - 9 a.m. - noon (Dr. K.Y. Lo)

(a)    Initial stress condition in rock

(b)    Closed-form elastic solution for stress and displacements

  • Initiation of roof instability and pattern of displacements
  • Illustrative case histories

(c)   Laboratory tour

Section 1(D) - Behaviour of Jointed Rock Mass and Rock Mass Strength Parameters
1:15- 4:30 p.m. - (Dr. C. Yuen)

(a)    Behaviour of jointed rock mass

(b)    Rock mass strength parameters


SECTION 2 - JULY 22 & 23, 2013

DESIGN AND CONSTRUCTION I

Section 2(A) - Analyses and Design

July 22 - 9 a.m. - 4:30 p.m.  (Drs. K.Y. Lo and C. Yuen)

(a)    Essentially intact rock with wide joint spacing

  • most rock formations in Ontario
  • high horizontal stress - stress induced failure
  • time dependent deformation (swelling)
  • Lo and Yuen Model, Lo and Hefny Model - long-term tests
  • rock-structure time interaction analysis.

(b)    Application of numerical methods in the design of tunnels and underground structures (Dr. C. Yuen)

Section 2(B) - Design of Support Systems
July 23 - 9 a.m. - noon  (Dr. C. Yuen)

(a)    Temporary support systems and reference to rock mass classification systems

  • support components (rock bolts, mesh, shotcrete, lattice girders)
  • permanent support, lining and special provisions

Section 2(C) - Construction Methods for Tunnels and Underground Structures
1:15 - 3:00 p.m. - (Guest Lecturer - Boro Lukajic)

(a)    Drilling and blasting for underground construction

3:15 - 4:15 p.m. - (Guest Lecturer - Mike McNally)

(b)    Construction issues relating to the use of Tunnel Boring Machines (TBM) for underground construction


SECTION 3 - JULY 29 & 30, 2013

DESIGN AND CONSTRUCTION II

Section 3(A) - Stresses and Displacements During Face Advance

July 29 - 9 a.m. - noon  (Dr. K.Y. Lo)

(a)    Concept of face advance

(b)    3-D elastic solution, stresses and deformations at tunnel face

(c)    Implications on rock squeeze, rock burst

(d)    Requirement of tunnel monitoring

Section 3(B) - Geological Issues and Design Considerations for Tunnels in Diverse Rock Formations
1:15 p.m. - 4:30 p.m. (Guest Lecturer - Dr. Trevor Carter)

(a)     Adequate geological understanding - Key to design for challenging ground conditions.

Section 3(C) - Case Histories of Design, Construction and Performance
July 30 - 9 a.m. - noon (Drs. K.Y. Lo and C. Yuen)

(a)     Tunnels in Southern Ontario

  • Heart Lake Tunnel, 27 years of observation in swelling rock
  • Darlington Intake and Discharge Tunnel, from investigation to completion
  • Donkin Morien Tunnel, Sydney Nova Scotia (or Princess Elizabeth Building, Niagara Falls)

1:15 p.m. - 4:30 p.m. (Drs. K.Y. Lo and C. Yuen)

(a)    Tunnels through the Andes Mountain, Venezuela and tunnels in Japan

(b)    Design concepts for geological depository of high level radioactive nuclear waste


Special Feature:

Successful completion of this course qualifies you to receive a certificate of completion from the Geotechnical Research Centre (GRC), Western University.  This certificate indicates the number of hours invested by you in the course to acquire new knowledge and skills.  The GRC has an international reputation in most areas of geotechnical engineering.


Faculty of Engineering • Spencer Engineering Building
Western University
London, Ontario, Canada, N6A 5B9 Tel: 519-661-3344
Updated June 14, 2013 by cquintus
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