Dec 08, 2017
It takes a lot more than the sea, a river or urban development to stop an engineer building the infrastructure that will help transport or improve the health of millions of people.
This can involve the perilous task of building tunnels and in 1858 a major tunnelling endeavour was required to save London from The Big Stink, a putrid stench that had befallen the capital.
MPs finally got to grips with London’s growing waste problem when it literally got up their noses. The Big Stink – caused by a combination of hot weather and untreated human waste and industrial effluent – had forced MPs from the House of Commons, prompting them to rush a bill through parliament to build a new sewage system. The Metropolitan Board of Works’ chief engineer, Joseph Bazalgette, was responsible for designing and building the huge system of intercepting sewers, which is still in use today.
Excavation is one of the greatest challenges in any tunnel project, and in 1876 The Engineer was in no doubt about the future success of plans by Sir John Hawkshaw and Sir James Brunlees, founders of the original Channel Tunnel Company, who proposed a 31-mile tunnel link.
“For the execution of the work, as far as mechanical aid is concerned, there need be no apprehension, there now being ample means in the way of tunnelling machinery, and ample experience in its extensive use,” said The Engineer’s correspondent.
Despite The Engineer’s enthusiasm, a tunnel wasn’t completed for another 118 years.
It might seem counterintuitive to build a tunnel in place of a bridge, but that was the situation in 1869 when The Engineer reported on the Tower Subway in London. An attempt to bridge the River Thames had failed in 1863 because of ‘the great height required for the passage of ships’. This problem was eventually solved by Tower Bridge, but before it came Peter Barlow’s Tower Subway, itself a forerunner of the modern deep-level Tube.
With Britain’s population being urged to Keep Calm and Carry On, passengers on London Underground were faced with the prospect of flooding as a result of bombing by the Luftwaffe. To mitigate the risks of flooding, a solution was found that literally closed the floodgates and sealed tunnels from the ingress of water.
In just over three years, eight tunnel boring machines dug below London’s streets to construct 42km of new rail tunnels for Crossrail, Europe’s largest civil engineering project. When complete, new trains will run over 100km from Reading and Heathrow in the west, through new tunnels under central London to Shenfield and Abbey Wood in the east. In doing so, the project is predicted to bring an additional 1.5 million people within 45 minutes of London.
Joseph Bazalgette’s Victorian sewers stand out as a highlight of Victorian tunelling, but even he couldn’t have anticipated demands on a system that must now serve around 8.7 million Londoners. Bazalgette’s low-level interceptor sewers fill up and overflow into the Thames, a situation that will be resolved by diverting overflow into the new tunnel instead of the river.
Designed to be constructed from vast pre-fabricated concrete sections that will be installed in trenches on the seabed up to 35m beneath the surface, the 18km Fehmarnbelt tunnel will comprise twin railway lines, four motorway lanes and a separate emergency tube. The tunnel, which will connect Denmark with Germany, will be five times longer than the current record-holder, the ∅resund tunnel, which is also in Denmark.
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IE expo China is proud to announce that the numbers of Chinese exhibitors (116) and Chinese visitors both hit a record high at its parent fair IFAT 2018, the world’s largest trade fair for water, sewage, waste and raw materials ...
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InfraSteel, the nation’s leading culvert rehabilitation company, announces a new product line of culvert and bridge kits. Railroad companies and Departments of Transportation in states across the country use InfraSteel culvert and bridge kits to extend the life of failing ...
Jul 13, 2018
Reclamation Commissioner Brenda Burman, together with Wyoming Governor Matthew H. Mead, Senators John Barrasso and Mike Enzi, and Representative Liz Cheney, announced collaborative plans to expand operational capacity at Fontenelle Reservoir in Wyoming on the Green River.
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Easi-Set, the most used prefabricated, all-precast concrete building system in the United States, helps solve water filtration issue at Virginia manufactured home community.
Jul 11, 2018
Fluence Corporation Limited announced that it has received a €3.9M contract for a wastewater treatment and waste-to-energy system for its customer ArcelorMittal.
Jul 11, 2018
In the past, the need for flashlights and confined space entry deterred many municipalities from investing in their manholes.
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The data-driven technology represents a new era in municipal analysis and prevention assessment for water and other pipe-based infrastructure.
Jul 09, 2018
Correctly sizing, installing and maintaining kitchen grease traps is key to improving the health of the UK’s sewer network. That is the view of the Grease Contractors Association (GCA), an initiative centred on best practice for the specification, installation and ...
Jul 06, 2018
Purchasing a new small diameter cutter is a big decision, but it can be hard to know if you’ve made the right choice until you’re in the field. And halfway through a job is the worst time to discover you ...
Jul 05, 2018
Organizers of the PLASTIC PIPES XIX Conference and Exhibition report that there will be a total of 99 papers delivered at this year's event. A preliminary handbook of abstracts is now posted to the website of the PPXIX conference that ...
Jul 04, 2018
Technologies for wastewater treatment and plant optimisation were the winners of the Innovation Showcase at BlueTech Forum. The event attracted 200 delegates and took place in Vancouver, Canada on 6-7 June 2018.
Jul 03, 2018
The Kennebunkport, ME, Kennebunkport & Wells Water District (KKWD) will remove perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) from its water source using an Activated Carbon System from Evoqua Water Technologies