Geocomposite Tunnel Invert Drainage – Online technical presentation
WebinarPresentation abstract: Cavidrain Invert geocomposite systems are used to form a drainage layer beneath the road pavement of tunnel floors. The use of Cavidrain Invert offers a number of advantages over more traditional methods (which use crushed stone and pipes) such as: (i) reduced excavation (as they form a much thinner layer compared to [...]
ITA Lecture – EPB tunnelling: environmental aspects and re-use opportunities of the conditioned muck
OnlineThe rapid development of mechanised tunnelling in the last decades has increased the tunnelling community’s focus on the environmental aspects of tunnel construction. The excavation carried out by using EPB (Earth Pressure Balance) machines often requires the use of foaming agents, specific products that are added to the medium intended to be excavated, in order [...]
Hobsons Bay main Yarra crossing duplication project
Melbourne Engineers Australia officeThe Hobsons Bay Main Sewer (HBMS), constructed in the 1960s, transfers approximately 30 per cent of Melbourne’s wastewater to the Western Treatment Plan at Werribee. The sewer alignment has a single sewer crossing under the Yarra River, which has deteriorated to a point where it requires rehabilitation and/or replacement. The Hobson Bay main Yarra [...]
ITA Lecture – Practical Aspects of Segmental Tunnel Lining Design
Webinar - Online onlyTopic: Practical Aspects of Segmental Tunnel Lining Design After several decades of continuous progress, mechanized tunnelling has now become the main method applied in almost all types of geology, all sizes, and in increasingly shorter lengths. The predominant excavation support system for TBM tunnels consists of a one-pass precast concrete segmental liner which in [...]
North East Link SEM Ventilation Tunnel and Adit Construction
Delve Underground Level 15 / 385 Bourke Street, Melbourne, VictoriaREGISTRATION DETAILS COMING SOON Overview The construction of the North East Link (NEL) tunnels is well underway! The largest transport infrastructure project in Victorian history consists of 6.5 km tunnels from Watsonia to Bulleen, and it will complete Melbourne’s orbital freeway network. The presentation will provide an overview of the recently constructed ventilation tunnel [...]
ATS technical session: Design of large underground caverns for pumped hydro projects
Online and in person at: Level 9, 340 Adelaide Street, BrisbaneOverview This webinar will be focused on the design of large underground caverns, a crucial topic with the current development of multiple Pumped Hydro schemes. The main speaker will be Mousa Hazrati Aghchai, who has a PhD in rock mechanics and a solid background in geotechnics/rock mechanics in Tunnelling, Hydropower, and Dam engineering with [...]
Ground freezing below a river estuary – Save the date
EA Brisbane Office Level 9, 340 Adelaide St (EA Office), Brisbane, QueenslandSAVE THE DATE - Registration details coming soon Overview A new 1.48km road tunnel has been excavated beneath the Świna straits in northwest Poland using a 13.46m slurry TBM. To overcome the challenges posed by low overburden and complex geology, artificial ground freezing was implemented to enable safe excavation for the emergency egress structures [...]