North American Tunneling

TRACK 1: TECHNOLOGY

Session 1: Construction Innovation



E-Power Pipe®: Two-Stage Trenchless Method for Long Drives in Small Diameters



Innovative Approach for Dust Control in Tunnel Construction



Precision Drilling for the Pardee Chemical Feed Shaft Project



Vintage TBM Cuts Months Off Schedule in San Antonio



Session 2: TBM Technology



Effect of Machine and Operational Parameters on Utilization Factor



Hard Rock Tunnel Boring in Challenging Conditions at the Jefferson Barracks Tunnel



The Machine Within a Machine: TBM Innovation in Vancouver, British Columbia, Canada



The Next Generation of Mixed Ground Tunnel Boring Machines



Unprecedented In-Tunnel Diameter Conversion of the Largest Hard Rock TBM in the U.S.



Session 3: Innovation Solutions



Automation in Segment Production and Integration of Artificial Intelligence



Considerations for Conveyor Belts in Tunneling Applications



Emerging Safety and Productivity Technologies for North American Tunneling



Environmentally Friendly Soil Conditioning for EPB TBM: The State of Environmental Considerations in North America and Around the World



Lateral Deflections and Vertical Control in Tunnel Control Networks



Long Distance Tunnelling: Challenges and Trends



Slurry Treatment Plants in Mechanized Tunneling Operations—Safety, Performance and Cost Factor for Jobsites



Session 4: Design Innovations



Applications of Artificial Intelligence in Tunnel Design and Construction



Breaking Conway's Law: Getting the Benefits from Integrated Design Automation



How Correct are Geostatistical Models in Predicting Soil Transitions?



Predicting Utilization Rate of Hard Rock Slurry TBMs by Discrete Event Simulation Model



Soil Conditioning for Potomac Group Soils in Washington DC



Session 5: Digital Technology



360-Degree 3D Digital Assessment of Subsurface Water Infrastructure



Development of the ITA "BIM in Tunneling—Guideline for Bored Tunnels"



Implementing BIM Underground on Progressive Design-Build Atlanta Plane Train West Extension Project



The Use of Cloud-Based Geotechnical Software During the Final Design of the New Haven Downtown Storm Sewer Infrastructure Improvement Project



TRACK 2: PLANNING



Session 1: Underground Project Delivery



Benefits and Challenges of Progressive Design-Build Procurement—Atlanta Plane Train Project



Built to Last? A UK Initiative to Manage Tunnel Infrastructure



An Introduction to Low-Density Cellular Concrete and Advanced Engineered Foam Technology



Session 2: Rehabilitation/Fire Life Safety



Application of Large Diameter Single-Bore Tunnel for Subway Systems



Flow Control in Tunnels



Freight Trains in Tunnels—Operational & Safety Aspects from the Tunnel Ventilation Perspective



Historic Rock Tunnel Rehabilitation—Designing for the Unknown



Tunnel Options for the Mokelumne Aqueducts Resiliency Project



Underwater Tunnel Repair with Stainless Steel Segmental Liner



Session 3: Underground Project Risk



Bridging the Gap—From Borehole Spacing to DSC Claim Resolution



Improved Contracting Practices and Ground Risk Management Using Geostatistics



Keep 'Em Separated—Managing Contract Interfaces for the Westerly Storage Tunnel (WST)



Risk Modelling Techniques for Complex Tunnelling Projects from Deterministic to Probabilistic Methods: Have We Done Enough?



The State of DRB's in the Tunnel Industry



Updating the GBR Gold Book



Session 4: Future Projects



Commuter Rail Tunnel Alignment Studies for the Pennsylvania Avenue Extension, San Francisco



Deep Rock Wastewater Tunnel in Delco



Design and Construction Challenges for the Ellicott City North Tunnel



Horizon Lateral: Reliability to Meet Community Needs Today and Tomorrow



Planning for Emerging Technology Underground Connection Between Rancho Cucamonga Metrolink Station and Ontario International Airport



A Tunneled Solution for the Cemetery Brook Drain in Manchester, New Hampshire



Session 5: Project Design



Characterizing Gassy Ground and Its Importance



Connecting Three Pump Stations, with Tunnels, on an Island, in Charleston, SC



TRACK 3: DESIGN



Session 1: Tunnel Lining Design



Analysis and Design of Tunnel Lining Through a Potentially Displaceable Fault



Design of Precast Segmental Tunnel Lining for Pawtucket CSO Tunnel Project



Hard Rock Pressure Tunnel Final Lining Design Guide Summary



Session 2: Design of Underground Spaces



Amtrak East River Tunnels Structural Repairs and Reconstructions



Newly Adopted Structure Criteria for BART Underground Facilities—Industry Update



Single Tube Versus Twin Tubes for Subway Systems



What Is Dry and Does Your Tunnel Need to Be?



Session 3: Challenging Design Issues



Can We Mine Yet? Criteria for Grouting Completion in Tunnel Headings



Design and Construction of a Shallow Twin Tube Bifurcation—Atlanta Plane Train West Extension Project



Design of Montreal Metro Blue Line Extension Tunnel



Three Rivers Protection and Overflow Reduction Tunnel (3RPORT) City of Fort Wayne Tunnel Alignment and Adit Redesign in Construction: A Schedule Driven Journey



Session 4: Innovative Designs



A Case Study Establishing Optimization Techniques and the Procedure for Successful Numerical Simulation of Ground-Structure Interaction



Trenchless Utility Relocation Addresses Environmental Impact for Channel Crossing



Tunnel Load Rating—A Case Study: Port of Miami Tunnel



Session 5: Numerical Modeling



Analytical Behavior of a Tunnel with Rock Bolts and Shotcrete During an Extreme Fire Event



Groundwater Pressure Consideration on Partially Drained Tunnel Lining Rehabilitation Design



Lateral Rock Load Estimation for Cut and Cover Structures



TRACK 4: CASE HISTORIES



Session 1: TBM Performances and Challenges I



Cutterhead Inspection and Maintenance on the Coxwell Bypass Tunnel Project in Toronto, ON



Design and Construction of NEORSD's Doan Valley Storage Tunnel



The Northeast Boundary Tunnel—A TBM Performance Review



Seattle's Ship Canal Water Quality Project—Curved Microtunnel Drive



Session 2: TBM Performances and Challenges II



Evaluating the Impact of DSC's on TBM Performance in Devonian Dolomite



Mechanized Tunneling in Flowable River Sands—The TBM Drives of the Annacis Island WWTP New Outfall System



Micro Seismic Monitoring and Analysis for Rock Burst Prone Tunnels Utilizing TBMs



Overcoming Challenges in Tunneling for Albany's Beaver Creek Clean River Project, Albany, New York



TBM Breakthroughs in Pressurized Conditions—Three Rivers Protection and Overflow Reduction Tunnel (3RPORT) and Northeast Boundary Tunnel (NEBT) Projects



TBM Tunnel Logistics Management on the Longest Outfall Tunnel in the Middle East



Session 3: SEM/NATM Excavation Techniques



Courthouse Commons Tunnel: A Case Study of Modern SEM Tunneling



Design and Construction Challenges for the North Temple Tunnel



Ground Improvement Works and Construction of Six SEM Adits as Part of the Northeast Boundary Tunnel Project in Washington, D.C.



San Diego Courthouse Commons Tunnel: Challenges and Design Solutions



Underpinning of an Operational Subway Aided by Mined Galleries



Session 4: Shaft Excavation, Tunnel Rehabilitation, and Challenges



Construction Challenges of the Anderson Dam Tunnel Project



Conventional Excavation of New Inlet/Outlet Tunnel for Newell Creek Dam, CA



Design and Construction of Large-Scale Ventilation Caverns on WestConnex's Rozelle Interchange Project



Out with the Old, In with the New: How We've Come Full Circle from the Burning River



Slurry Wall Construction in Coarse-Grained Soils



Tunnel Rehabilitation Through Historic Landslides in Laguna Beach



Unique Challenges for the Construction of PATH's Exchange Place Cross-Passage Tunnel



Session 5: Geotechnical and Contracting Cases



Analysis of Near Field Vibration Monitoring in Construction Blasting



Hybrid Shoring Design for the Courthouse Commons Tunnel in San Diego, California: Controlling and Predicting Ground Movements



Implementation of Vibration Monitoring to Improve Blast Design for the Mitchell Point Crossing



Karst Feature Investigation, Mitigation Design, Specification, and Contract Provisions



Parametric Study of Portal Area Condition for Mountain Tunnel Damaged by Earthquake