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

In this episode, we’ll cover global project highlights, new tools and research, a deep-dive topic on 16,000 m continuous TBM drive in SriLanka, a brief look back at geotechnical history, and finally, we’ll share some upcoming courses and seminars from around the globe.

Segment 1: Global Project Highlights:

Landslide at Cebu City landfill kills one, exposes waste slope stability risks

https://www.geoengineer.org/news/landslide-at-cebu-city-landfill-kills-one-exposes-waste-slope-stability-risks

Shropshire canal collapse to cost ‘millions’ as investigation continues

https://www.geplus.co.uk/news/shropshire-canal-collapse-to-cost-millions-as-investigation-continues-09-01-2026/

Magnitude 6.5 earthquake shakes Southern and Central Mexico, triggering landslides

https://www.geoengineer.org/news/magnitude-65-earthquake-shakes-southern-and-central-mexico-triggering-landslides

Omfattende laboratorieoppdrag for Sørlige Nordsjø II

https://www.ngi.no/aktuelt/omfattende-laboratorieoppdrag-for-sorlige-nordsjo-ii/

Segment 2: Research and Tech Tools

Experimental study on soil erosion induced by leakage of circumferential joints in shield tunnels

https://cdnsciencepub.com/doi/10.1139/cgj-2025-0485

Performance of a Conical Tamper for Dynamic Compaction of Low-Compressibility Silt Soil

https://link.springer.com/article/10.1007/s10706-025-03591-4

Pressure-Driven Variations in CO₂ Displacement Patterns within Heterogeneous Porous Structures

https://cdnsciencepub.com/doi/10.1139/cgj-2025-0433

Influence of Soil Fabric and Gradation on Excess Pore Water Pressure Development

https://link.springer.com/article/10.1007/s10706-025-03596-z

Segment 3: Deep Dive Topic

16,000 m continuous TBM drive sets new overseas tunnelling record in Sri Lanka

https://www.geoengineer.org/news/16000-m-continuous-tbm-drive-sets-new-overseas-tunnelling-record-in-sri-lanka

Segment 4: This Week in Geotechnical History

Tasman Bridge Disaster – Hobart, Tasmania

https://www.geoengineer.org/on-this-day/01/05

Segment 5: Upcoming Courses & Seminars

Event links:

· https://conferenceindex.org/conferences/geotechnical-engineering/germany?utm

· https://www.issmge.org/events/issrr2026?utm_

· https://internationalconferencealerts.com/eventdetails.php?id=100641732&utm

· https://www.icsmge2026.org/en/?utm

For suggestions and feedback: thisweekingeotechnics@gmail.com

In this episode, we’ll cover global project highlights, new tools and research, a deep-dive topic on Seismic Ground Improvement Solution, a brief look back at geotechnical history, and finally, we’ll share some upcoming courses and seminars from around the globe.

Segment 1: Global Project Highlights:

Rainfall-triggered rockfall disrupts Highway 18 in Southern California

https://www.geoengineer.org/news/rainfall-triggered-rockfall-disrupts-highway-18-in-southern-california

British Geological Survey releases suite of ten new soil reference materials

https://www.bgs.ac.uk/news/suite-of-ten-new-soil-reference-materials-released/

Four killed, 12 injured in illegal mine collapse in Monapo, Mozambique

https://www.geoengineer.org/news/four-killed-12-injured-in-illegal-mine-collapse-in-monapo-mozambique

1.5-km MT-5 tunnel breakthrough marks milestone for India’s bullet train

https://www.geoengineer.org/news/15-km-mt-5-tunnel-breakthrough-marks-milestone-for-indias-bullet-train

Segment 2: Research and Tech Tools

Grouting pipe lifting rate shown to control vacuum preloading efficiency

https://link.springer.com/article/10.1007/s10706-025-03589-y

Scientists stunned by a massive hydrothermal field off Greece

https://www.sciencedaily.com/releases/2025/12/251228020000.htm

New scaling law refines centrifuge modelling of seepage failure in gap-graded soils

https://link.springer.com/article/10.1007/s10706-025-03565-6

Initial clay structure shown to control permeability evolution

https://cdnsciencepub.com/doi/10.1139/cgj-2025-0348

Segment 3: Deep Dive Topic

Encinal High School Stadium ground improvement addresses seismic and liquefaction risk

https://www.geoengineer.org/news/encinal-high-school-stadium-ground-improvement-solution-to-address-seismicity-concerns

Segment 4: This Week in Geotechnical History

The Institution of Civil Engineers was formed

https://www.geoengineer.org/on-this-day/01/02

Segment 5: Upcoming Courses & Seminars

Event links:

· issmge.org

· efstm.com

· https://alertgeomaterials.eu/2025/10/2026-international-conference-on-computational-dynamic-soil-structure-interaction/

· https://www.issmge.org/events/8iygec

For suggestions and feedback: thisweekingeotechnics@gmail.com