Sinkholes are becoming more and more frequent in Florida where soil conditions consist of sand formations, on top of layers of clay and limestone. Yesterday, April 24, a sinkhole between two houses in a residential area in Florida was re-activated, soon after its filling over the past weekend. Watch the videos below, revealing the extent of the threat in Florida and other states and Dr Donald Van Nieuwenhuise explaining the causes of this phenomenon!
The sinkhole expanded overnight by 6 to 10 feet, now measuring 65ft in width and 50ft in depth. According to Gina Lambert, from the Villages Public Safety Department, crews are probably going to start filling the sinkhole with cement.
Extensive ground improvement works on the Ohio River Bridges Project (Downtown Pursuit) along Interstates 65 and 64 in Downtown Louisville, are being executed since June 2013 by Hayward Baker. The project involves ground improvement for 42 retaining walls and embankment structures and is carried out for the Kentucky Transportation Cabinet and the Indiana Department of Transportation, which are joint owners of the transportation investment.
The high-speed railway project connecting Hong Kong with Shenzhen and Guangzhou in China is subject to significant delays, estimated up to two years, having a serious impact on the development of the Pearl River Delta. MTR Corporation announced the delay last week, attributing it to the breakdown of the tunneling machine at Yuen Long. Construction began back in 2010 and it is estimated that it will not finish before 2016, while the railway is expected to open for public use in 2017.
A 100ft deep, slow moving landslide in Wyoming is gradually tearing apart a house on a hilltop, as authorities are issuing evacuation orders for 46 residencies located in the sliding zone. The slow moving landslide starting on March 4th, has 5% chance of becoming as violent as the Oso landslide that hit Washington state.
IOS Press, a valued Geoengineer.org sponsor, published last year a book by Mandy Korff based on a research which provides insight into mechanisms of soil-structure interaction for piled buildings adjacent to deep excavations to be used in the design and monitoring of deep excavations in urban areas.
Built in 1913 to provide the earthquake-devastated San Francisco with fresh water, the Hetch Hetchy Reservoir has given rise to significant political dispute over decades, with environmentalists and nature lovers opposing its construction. And while San Francisco's citizens are nowadays discussing the possibility of its removal, other areas across the U.S. are taking action with very interesting feedback.
A mudslide hit the area of Shuroabad, 150 miles south of the Tajik capital of Dushanbe, near the Afghan borders on April 12. The landslide occurred in the middle of the night, which explains the number of victims. So far, six children have been recovered dead and seven people are missing and assumed dead. Landslides and floods are very common in the poorest country in central Asia, with 90% of its territory being mountainous. Locals are cooperating with emergency services to dig out houses covered in mud and the death toll is expected to rise.
The underground sewage network spreading under Calcutta, built back in 1875 by the British settlers, was equivalent to the systems of European cities like London and Hamburg, Germany. Being in operation for over than 130 years, but with no significant maintenance work performed, the 2006 cave-ins urged for de-silting operations and structural rehabilitation. The maintenance works were undertaken in 2007 by the Kolkata Municipal Corporation, which today are almost complete. Upon completion, it is estimated that the flooding affecting the city every monsoon will be largely controlled.
A West Coast earthquake early warning system at stake due to lack of funding, as Japan's is active since 2007Written by Geoengineer.org
Earthquake prediction has been a challenge for scientists for decades until the development of early warning systems, already up and running in countries like Japan and Mexico. China is in the process of developing a similar system, while in the U.S. the system in still on a pilot-mode due to lack of funding. The specific warnings can only notify people seconds before a temblor occurrence, which may look a negligible amount of time as opposed to hurricane and flooding warnings, predicted hours or even days before hitting inhabited areas. But even that, is missed by Californians due to lack of funding.
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