Tunnel Design & Construction

The growth of the tunnel construction in the country has been driven by a robust pipeline of projects and investments in setting up hydropower projects, developing urban mass rapid transit systems, improving road and rail connectivity, constructing underground crude oil storage, and upgrading water supply and sewerage systems. Hydro tunnels account for the largest share, followed by railways, irrigation, metro rail, water supply, sewerage, roads and highways.

The Civil industry is beginning to use modern technology for tunnel construction, and there is now greater room for adoption of international standards in tunnel design and construction. There is a demand for high-tech tunnelling equipment as geological complexities are the biggest challenge in tunnelling.

Contractors are also experimenting with new techniques and methodologies such as the P5 system, sequential excavation systems, and ground freezing for the more geological challenging/special projects and are using innovative materials such as fibre bolts, fibre reinforced shotcrete, lattice girders, lining stress controllers, pipe-roof pre-support systems, geo-synthetics, geo-membranes, steel anchors and self-drilling rock bolts etc. to improve the durability and strength of the tunnels.

Course Content

The workshop is online and would be held in three days with contributions from practioners in this field. The workshop is held on July 27th, 29th, and August 5th from 12:00 pm to 2:00 pm with six presentations.

Event Schedule

Tuesday, July 27th, 2021:

  • Introduction 12:00 pm – 12:05 pm
  • The Effects of In-situ Stresses and Time-Dependent Deformation on Tunnelling in Swelling Rock By: Dr. Kwan Yee Lo 12:05 pm – 12:50 pm
  • Application of Laboratory Swell Tests Results and Parameters for Design of Underground Structures in Swelling Rocks By: Silvana Micic 12:50 pm – 1:35 pm
  • Q&A and Closing 1:35 pm – 2:00 pm

Thursday, July 29th, 2021:

  • Introduction 12:00 pm – 12:05 pm
  • Geotechnical Aspects of Tunnel Design and Construction By: Masoud Manzari 12:05 pm – 12:50 pm
  • Design & Construction Challenges for Large Diameter Tunnels By: Gary J.E. Kramer 12:50 pm – 1:35 pm
  • Q&A and Closing 1:35 pm – 2:00 pm

Thursday, August 5th, 2021:

  • Introduction 12:00 pm – 12:05 pm
  • Case histories of Hanlan Feedermain (Contract 3) and Twinning of West Trunk Sewer (Contract 2) projects in GTA By: Andrew Cushing 12:05 pm – 12:50 pm
  • Tunnel Lining design in the Greater Toronto Area. Lessons learned from recent case histories. By: Giuseppe Gaspari 12:50 pm – 1:35 pm
  • Q&A and Closing 1:35 pm – 2:00 pm

Presentation Details:

The Effects of In-situ Stresses and Time-Dependent Deformation on Tunnelling in Swelling Rock

In this presentation, a design methodology for tunnels and underground structures in rocks is described. The key parameters governing the design are discussed. As an example, the case history of a large diameter (14.4 m) and 10 km long tunnel in Queenston shale will be given. The complete history from project conception, research on behaviour of rocks of the host formations, development of design alternative to accelerate completion of the project will be described. The performance during construction, roof instability and in-situ swelling of the rocks will be discussed. Finally, different methods of design for time dependent deformation are described.

Organizer

CGS-SOS – The Canadian Geotechnical Society – Southern Ontario Section

Course Details

Course Duration- 3 Days

Course Start Date – 27th July 2021

Course Fees – General AdmissionCA $100.00

SponsorshipCA$500.00

StudentsCA$20.00Students

Course Brochure

Course Registration

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