Today on Latest from Tunnels and Tunnelling


Third DC TBM ready to launch
17 April, 2015 USA - DC Water hosted a ceremony on April 14 to name and christen the third TBM in its fleet, which will mine the First Street Tunnel, part of the 13.1-mile long Anacostia River Tunnel system.
  • Tijuana drugs tunnel halted by officials
    MEXICO – Soldiers have apprehended nine amateur tunnel engineers excavating an alleged drugs tunnel in Tijuana, Mexico. The eventual alignment would apparently stretch into California, USA. Some 150m had already been excavated.
  • Xe-Pian Xe-Namnoy TBM starts work
    Laos – March saw the start of TBM tunnelling works on the 11.8km-long, low-pressure headrace tunnel for the Xe-Pian Xe-Namnoy Hydropower Project.
  • Young tunnellers at forefront of achievement awards
    GREAT BRITAIN – Two past chairs of the British Tunnelling Society Young Members (BTSYM) have been shortlisted for the Asian Women of Achievement Awards. Joanne Sui and Anita Wu, both of London Bridge Associates have been nominated for the awards, which were launched over 15 years ago to celebrate the achievements of successful Asian women in British society.
  • MTA approves Judlau rebuild contact
    USA - New York governor Andrew Cuomo announced March 23 that the MTA intends to award a four-year, USD 236.5M contract to rebuild the Queens Midtown Tunnel, which was heavily damaged during Superstorm Sandy and since has been operating with temporary repairs. The contract – which would be with Judlau Contracting Inc. – was approved by the MTA Bridges and Tunnels Committee on March 23, and sought full MTA Board approval on Wednesday.


Mobilising Latin America
24 March, 2015 Major infrastructure projects across Latin America will mobilise both people and freight and provide much needed energy and utilities and the tunnelling sector is set to benefit. Technical journalist Sally Spencer reports
  • Argentine Shaft Saviour
    Tunnelling work for a water treatment project in northern Buenos Aires required shaft excavation in soft, sandy silt. When leaking joints hampered progress, the contractor chose to pursue groundfreezing, a possible first use in South America. Joseph Sopko and Robert Chamberland of Moretrench give this report
  • Rolling, Rolling
    Conveyor use as a mucking system is spreading almost to the point of ubiquity, according to manufacturers. Technical journalist Keren Fallwell reports
  • Hot progress
    fire safety and evacuation are making further advances in metro systems. Patrick Reynolds reports
  • Predicting settlements from conventional tunneling
    The Üsküdar – Ümraniye – Çekmeköy (UUc) project in istanbul, turkey is an extension to the metro on the asian side of the city, running 17km underneath a dense urban area. Some 8km of tunnels needed to be excavated through weak to medium strong sedimentary rock using conventional methods. In this article based on a paper presented at WTC Brazil, Sara Bech Padrosa and Nicola Della Valle of Tunnelconsult share some of the lessons learned from the settlement prediction methods employed.


Tunnel Science
10 April, 2015
  • High tide
    It’s an exciting time for the International Tunnelling Association (ITA) leadership. With growing international acceptance that climate change is affecting the world, there are two outcomes. Firstly, governments try to change the habits of the planet to slow the pace of a changing biosphere. This is a boost to the demand for tunnelling on the larger scale; governments looking for low-carbon per capita means of transportation, for example. Metro networks rather than private car ownership.
  • What is sustainable infrastructure?
    It's not underground, one would conclude from a report asking, what does the future of sustainable infrastructure look like? Making use of underground space is not once mentioned.
  • China Decider
    In December Australia’s multi-industry contracting giant Leighton Holdings announced the impending sale of John Holland to the fourth largest construction company in the world. The buyer, state-owned China Communications Construction Company (CCCC) stressed that it would be “business as usual” for John Holland customers, that it perceived growth opportunities in Australia. Normal commentary during a takeover.
  • Old dogs teach new tricks
    BY NOW it's an autumn tradition in the UK. The leaves are turning, the daily commute has the added pleasure of the _ u virus, and a study has warned that we face a critical shortage of engineers.