Bang: big bridge blocking boulder broken by blasting

Following a recent earthquake in China, the roads and highways had to be cleared quickly to allow emergency deliveries, as well as general transport. One key bridge was blocked by a massive boulder that had been dislodged by the quake. As the boulder was too large to move using the excavators or bulldozers that the bridge could support, a decision was made to use blasting instead to clear the path. A drilling rig was brought into place and this machine bored a blasthole into the errant boulder, with the hol
April 24, 2013 Read time: 1 min
Following a recent earthquake in China, the roads and highways had to be cleared quickly to allow emergency deliveries, as well as general transport. One key bridge was blocked by a massive boulder that had been dislodged by the quake. As the boulder was too large to move using the excavators or bulldozers that the bridge could support, a decision was made to use blasting instead to clear the path. A drilling rig was brought into place and this machine bored a blasthole into the errant boulder, with the hole then being charged with conventional explosives. The blast then broke the boulder into pieces small enough for lighter machinery to move out of the way, allowing the bridge to be reopened to traffic.

Related Content

  • Concrete surface for runway paving job
    January 18, 2016
    The Fort Lauderdale-Hollywood International Airport in Broward County, Florida, was suffering departure delays on every single flight. The existing 9R-27L runway was too short at 1615m in length, affecting capacity at the airport. To deal with the issue, the Broward County Board of County Commissioners created a plan to extend the southern runway to 2438m to accommodate larger commercial aircraft. The project was not simple however and could not be achieved by tearing out the existing runway and buil
    Read More
  • Clever electric solution for embankment stabilisation
    August 28, 2013
    A highly innovative solution for road embankment stabilisation has helped save costs by up to 30% over conventional techniques. Balfour Beatty Mott MacDonald has used electrical current to stabilise embankments on a busy UK dual carriageway, avoiding disruption to motorists, cutting carbon by 40% and costs by 30%, and producing zero waste When slope failure was detected on embankments carrying the popular A21 dual carriageway, Balfour Beatty Mott MacDonald pioneered a novel technique to tackle the prob
    Read More
  • New Doha highway under construction
    March 18, 2016
    Construction is now underway on the New Orbital Highway in Doha, Qatar. This project is called The New Orbital Highway contract 2 and is one of the largest projects being delivered through the Qatar’s public work authority Ashghal. The work consists of the design and construction of 47km of highway with a five-lane dual carriageway for light vehicles and two truck lanes in each direction. It also includes six viaducts, 17 bridges and underpasses and a 320m cut-and-cover tunnel. This last is particularly
    Read More
  • Innovations in machine control delivering performance
    May 20, 2019
    New innovations in machine control are delivering highperformance, with advances to come showing future potential – Mike Woof writes In transportation, the potential for autonomous vehicles that operate without the need for a human driver is now being evaluated. A string of development projects are underway by an array of automotive and technology companies, sometimes in partnership with each other. In the mining sector, autonomous machines have been operating in underground facilities for 20 years and
    Read More

Highlighted Content