This webinar explores how PLAXIS 2D and 3D can be used together to simulate complex tunnel excavations and design effective support systems in weak, deformable ground.

Through interlinked case studies, we will simulate the excavation of a tunnel in poor-quality rock using advanced support techniques, including umbrella arch systems with pipe forepoles, shotcrete linings, rockbolts, and composite steel sets.

Whether you're addressing face instability, evaluating structural forces, or simplifying 3D behavior into efficient 2D analyses, this webinar will equip you with practical modeling techniques and insights into the geotechnical design of tunnels in challenging conditions.

Learning Objectives:

Understand the challenges of tunnel excavation in squeezing ground and how advanced support systems can mitigate excessive deformation and face instability. Model staged tunnel excavation and advanced support installation. Compare and integrate 2D and 3D tunnel modeling approaches, recognizing their respective strengths, limitations, and appropriate use cases.