In this episode, we’ll cover global project highlights, new tools and research, a deep-dive topic on What Are Tieback and Soil Nail Walls, a brief look back at geotechnical history, and finally, we’ll share some upcoming courses andseminars from around the globe.

Segment 1: Global Project Highlights:

Crane collapse strikes passenger train in Thailand claiming at least 32 lives

https://www.geoengineer.org/news/crane-collapse-strikes-passenger-train-in-thailand-claiming-at-least-32-lives

Tunnelling resumes on Melbourne’s North East Link following sinkhole investigation

https://www.tunnelsandtunnelling.com/news/tunnelling-resumes-in-melbourne-after-sinkhole-investigations/?cf-view

China’s TBM rescue beneath the Yangtze

https://www.geoengineer.org/news/a-new-benchmark-for-underground-rescue-operations-chinas-tbm-rescue-beneath-the-yangtze

Low-level helicopter survey to map aquifers in eastern New Mexico and West Texas

https://www.usgs.gov/news/state-news-release/media-alert-low-level-flights-image-geology-and-aquifers-over-parts-new

Segment 2: Research and Tech Tools

Temperature-dependent soil water retention and hydraulic conductivity in biopolymer-treated soils

https://cdnsciencepub.com/doi/10.1139/cgj-2025-0756

Influence of Spatial Variability of Freezing-Sensitive Parameters on the Formation of Frozen Walls in Artificial Ground Freezing

https://link.springer.com/article/10.1007/s10706-025-03530-3

Rheological and infiltration properties of wheat straw powder-enhanced slurry for slurry shield tunneling

https://cdnsciencepub.com/doi/10.1139/cgj-2025-0589

Undrained Vertical Uplift Capacity of Bucket Foundations in Overconsolidated Clay under Two Way Cyclic Loading

https://link.springer.com/article/10.1007/s10706-025-03610-4

Segment 3: Deep Dive Topic

Tiebacks vs. Soil Nails: Geotechnical Considerations for Earth Retention

https://www.geoengineer.org/news/tiebacks-vs-soil-nails-choosing-the-right-earth-retention-solution

Segment 4: This Week in Geotechnical History

Three Gorges Dam – Yichang, China

https://www.geoengineer.org/on-this-day/01/14

Segment 5: Upcoming Courses & Seminars

Event links:

· https://compdssi.altervista.org/conferences/compdssi-2026/

· https://entouragex.com/wtc-2026-the-global-hub-for-tunneling-and-underground-innovation/

· https://entouragex.com/wtc-2026-the-global-hub-for-tunneling-and-underground-innovation

· https://www.icsmge2026.org/en/

For suggestions and feedback: thisweekingeotechnics@gmail.com