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About 23 results
Graphite iron lining repairs Perth airport link collapse
Graphite iron lining repair for Perth airport link collapse
http://www.tunneltalk.com/Australia-15Oct20-Graphite-iron-lining-solution-for-Perth-airport-link-collapse.php
Publication Date: Oct 2020 | Author: Metronet News Release
Hydro diversion tunnel failure review
Damage caused by collapse of the diversion tunnel around the Ituango hydropower dam and underground powerhouse construction site has resulted in the largest ever insurance loss claim in the history of the international construction industry at about USD$4 billion and has demanded investigations into the root causes
http://www.tunneltalk.com/Colombia-08Oct2020-Collapse-of-the-Ituango-hydropower-project-collapse-in-review.php
Publication Date: Oct 2020 | Author: Dean Brox, Independent Consultant, Canada
Hydropower watercourse failures - risks and causes
Collapses in hydropower watercourses have caused high profile insurance claims, repairs and loss of generating revenues and initiating a review within the industry to review practices in the design and geotechnical investigation of hydropower installations
http://www.tunneltalk.com/TunnelTECH-Mar2020-Hydro-waterway-collapses-causes-and-recommendations.php
Publication Date: Mar 2020 | Author: Dean Brox, Independent Consultant, Canada
Fatal collapse of metro heading in Foshan
Eight are confirmed dead and three are missing following catastrophic failure of a TBM metro tunnel heading in Foshan in south east China
http://www.tunneltalk.com/China-14Feb2018-Deadly-collapse-in-Foshan.php
Publication Date: Feb 2018 | Author: Shani Wallis, TunnelTalk
STUVA to convene in Stuttgart for 2O17
STUVA, the premium biennial conference in Germany, to convene in 2017 in Stuttgart
http://www.tunneltalk.com/Conferences-Oct2017-STUVA-2017-convenes-in-Stugartt.php
Publication Date: Oct 2017 | Author: TunnelTalk reporting
Ground freezing TBM drive collapse in Germany
Failure of a ground freezing operation is associated with collapse of a heading of the twin tube TBM rail tunnel in Rastatt, Germany, halting rail traffic on the main freight and passenger Rhine Valley rail lines between Karlsruhe and Basel in Switzerland above and demanded the filling of the new tunnel beneath with concrete to stabilise the situation and burying the TBM in the process and initiating an immediate investigation into the causes and the implications for insurance coverage and cost
http://www.tunneltalk.com/Germany-21Aug2017-Rastatt-TBM-rail-tunnel-collapse-brings-rail-traffic-to-a-halt.php
Publication Date: Aug 2017 | Author: Shani Wallis, TunnelTalk
Sinkhole disrupts routine in Fukuoka, Japan
A collapse that cause a 30m long section of a 30m wide five-lane street in Fukuoka city, Japan, is linked to excavation works for running tunnels to extend the city’s Nanakuma subway line
http://www.tunneltalk.com/Japan-09Nov2016-Sinkhole-collapse-in-Fukuoka-Japan.php
Publication Date: Nov 2016 | Author: TunnelTalk reporting
Underground contribution to Rio’s Olympic experience
As thousands of visitors descend on the city of Rio de Janiero for the Brazil Summer Olympic Games of 2016, it is the new underground Line 4 of the city’s metro system and a new twin-tube three-lane highway tunnel that will provide vital public infrastructure to ease transportation congestion for visitors and athletes alike between the city centre and the Olympic Village and venues on the west side of the Pedra Branca mountains
http://www.tunneltalk.com/Brazil-Olympics-04Aug2016-Underground-contribution-to-Olympic-Games-in-Rio-de-Janeiro.php
Publication Date: Aug 2016 | Author: TunnelTalk reporting
Mining resumes on Ottawa Confederation Line
Construction resumes by Rideau Transit Group on Ottawa Confederation Line following sinkhole disruption
http://www.tunneltalk.com/Canada-03Aug2016-Ottawa-Confederation-Line-resumes-construction.php
Publication Date: Aug 2016 | Author: Ottawa Transportation Services News Release
Bids in for PPP race
Collapse of tunnelling works beneath a main street of Ottawa city centre in Canada brought the mid-week morning traffic to a standstill when a large sinkhole swallowed the road deck and raised questions for the engineers about the design and progress of the underground excavations by the design-build contractor
http://www.tunneltalk.com/Australia-17Aug2016-Melbourne-Metro-tunnel construction-shortlist-announced.php
Publication Date: Jul 2016 | Author: Peter Kenyon, TunnelTalk
Three EOIs for Melbourne Metro mega-project
Collapse of tunnelling works beneath a main street of Ottawa city centre in Canada brought the mid-week morning traffic to a standstill when a large sinkhole swallowed the road deck and raised questions for the engineers about the design and progress of the underground excavations by the design-build contractor
http://www.tunneltalk.com/Australia-12Jul2016-Three-EOIs-for-Melbourne-Metro-Tunnels-and-Stations-package.php
Publication Date: Jul 2016 | Author: Peter Kenyon, TunnelTalk
First contract award for Melbourne Metro
Collapse of tunnelling works beneath a main street of Ottawa city centre in Canada brought the mid-week morning traffic to a standstill when a large sinkhole swallowed the road deck and raised questions for the engineers about the design and progress of the underground excavations by the design-build contractor
http://www.tunneltalk.com/Australia-22Jun2016-First-contract-award-for-9km-Melbourne-Metro.php
Publication Date: Jun 2016 | Author: Peter Kenyon, TunnelTalk
Face failure on Ottawa LRT excavation
Collapse of tunnelling works beneath a main street of Ottawa city centre in Canada brought the mid-week morning traffic to a standstill when a large sinkhole swallowed the road deck and raised questions for the engineers about the design and progress of the underground excavations by the design-build contractor
http://www.tunneltalk.com/Canada-14Jun2016-Sinkhole-disrupts-Ottawa-city-centre.php
Publication Date: Jun 2016 | Author: Shani Wallis, TunnelTalk
Challenging mixed ground overcome in Bangalore
Collapse of tunnelling works beneath a main street of Ottawa city centre in Canada brought the mid-week morning traffic to a standstill when a large sinkhole swallowed the road deck and raised questions for the engineers about the design and progress of the underground excavations by the design-build contractor
http://www.tunneltalk.com/Bangalore-14Jun2016-Robbins-assists-Coastal-for-penultimate-breakthrough.php
Publication Date: Jun 2016 | Author: Amey Yong, Technical Writer, The Robbins Company
Ottawa manages excavation ground run
Excavation for the central underground section of the Ottawa LRT made a positive start in Dec 2013 with open face SCL/NATM/SEM excavation of the single-tube, double-track running tunnel advancing from three work sites when shallow cover and an unidentified zone of previous underground utility works, backfilled with unclassified and non-compacted rubble connected with a zone of soft ground in the crown of the top heading advance from the east portal and caused a ground run that created a sinkhole on the intersection of streets above no injuries or damage to surrounding buildings and excavation resumed once the situation was stabilized
http://www.tunneltalk.com/Ottawa-LRT-27Feb2014-Early-excavation-progress-and-shallow-cover-fill-material-causes-sinkhole.php
Publication Date: Feb 2014 | Author: Shani Wallis and Peter Kenyon, TunnelTalk
Salvage team recovers Japan disaster TBM
TBM raised to the surface following a complex undersea salvage operation and as ordered of contractor Kajima Corporation by Okayama Police in Japan as part of the investigation into the tunnel collapse and death of five workers
http://www.tunneltalk.com/Japan-04September2013-Underwater-TBM-recovery-to-investigate-fatal-Japan-tunnel-collapse.php
Publication Date: Sep 2013 | Author: Peter Kenyon, TunnelTalk
Repairing Mumbai's crumbling drainage system
Shotcrete Technologies and Michigan Engineers team up to repair century-old Mumbai storm water drainage system in India
http://www.tunneltalk.com/India-Feb13-Repairing-crumbling-storm-water-drainage-systems-in-Mumbai.php
Publication Date: Feb 2013 | Author: Shotcrete Technologies News Release
Metro sinkhole in Guangzhou
A sinkhole of 10m deep and covering 150m2 above construction of the Guanzhou Metro Line 6 in China on 28 January, 2013, is reported as being created by an inrush of water and basal sand.
http://www.tunneltalk.com/Tunnel-collapse-Feb13-Guangzhou-sinkhole.php
Publication Date: Feb 2013 | Author: TunnelTalk reporting
Possible causes of Japan's fatal tunnel failure
The bodies of five drowned workers are recovered from the tunnel collapse disaster in Japan as a broken segment in the notably 160mm thin segmental lining is reported as the possible cause
http://www.tunneltalk.com/Japan-tunnel-disaster-Mar12-Bodies-found-and-causes-investigated.php
Publication Date: Mar 2012 | Author: Shani Wallis, TunnelTalk
Symptoms of the collapse syndrome
Another tunnel collapse has hit the headlines this week. This time it is in Prague on a highway tunnel being built on a ring road around the Czech Republic's capital. Local newspaper reports tell of a collapse crater on the surface of 20m wide x 30m long and of an excavator driver and his machine being buried under the fall, but rescued and released after a short hospital stay. Fortunately, there are no reports of serious injuries or fatalities or of structural damage to surface buildings or underground infrastructure in the area. The collapse is said to have occurred in the small hours of Tuesday 6th July at 1am, and on a section of tunnel designed and being constructed according to the NATM concept.
http://www.tunneltalk.com/Discussion-Forum-Jul10-Collapse-syndrome.php
Publication Date: Jul 2010 | Author: Shani Wallis, TunnelTalk
2009 in retrospect
2009 has been a brutal year - for many. The collapse of the global financial market in October 2008 required painful adjustment during 2009 - deep cuts in workforces, abrupt halt of capital investments, cancellation of orders, closure of factories, indefinite postponement of projects. That was in just about every global business except tunnelling. True to historic trend, civil tunnelling operating in many countries has been operating contrary to the overall economic trend.
http://www.tunneltalk.com/2009-roundup-Dec09.php
Publication Date: Dec 2009 | Author: Shani Wallis and Paula Wallis, TunnelTalk
Cairo Metro tunnel collapse
Slurry filled sinkhole
http://www.tunneltalk.com/Cairo-Metro-Sep09-tunnel-collapse.php
Publication Date: Sep 2009 | Author: Shani Wallis, TunnelTalk
Sinkhole bothers Brightwater
Over-excavation on one of the Brightwater tunnel drives is being blamed for a 15ft deep x 30ft wide sinkhole (4.5m x 9m) in a residential neighborhood north of Seattle, Washington.
http://www.tunneltalk.com/Brightwater-Mar09-Brightwater-sinkhole.php
Publication Date: Mar 2009 | Author: Paula Wallis, Reporter
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