Thursday, November 27, 2014

The witness: “Everything happened very quickly” – Norrköping Newspapers

It’s the ultimate nightmare: You go and lie in bed and suddenly opens up a hole in the floor. It was exactly what happened Floridabon Jeff Bush on February 28 last year. His body was buried under the rubble and was never found. 37-year-old had fallen victim to a sinkhole, or, as it is really called, a instörtningsdolin.

Full equally dramatic scenes took place may not be on campus in Linköping on Wednesday night, when a cracked sewer pipes orsakadeett two meters deep sinkhole on campus. But for those who saw when a lamppost outside Kårallen swallowed up by the earth, it was dramatic enough.

– Everything happened very quickly. It quickly began to fill with water. Then disappeared lamppost also said Mrs Malmrud.

Police were called to the scene and soon the staff from the technology departments in place. An area around the two meter deep hole was sealed off and soon it was found that there was a sewer which sprung a leak. The wastewater had undermined the ground.

According to Goran Carlzon, press officer for Technical works, it will likely take several days to fix the leak. The tube, having a diameter of 80 centimeters, five meters into the ground. A pumping plant looks, however, that the water flow is stopped.

– We have there a really big excavator. Before we get down and look, we can not say exactly what happened.

Fortunately happened to the ground open up right where it stood a lamppost. It may have prevented a serious accident.

– Street lamp continued to shine for a while and it was great because then people saw the hole.

An area around the hole was on Thursday cordoned off and according to the technology departments, there should not be any risk for there to be more sinkholes.

– It is under control. It can crumble a bit around the hole, but the area is cordoned off, says Göran Carlzon.

Wednesday sinkhole would be unthinkable without human interference. But there is no risk of natural sinkhole in Östergötland? We asked Charlotte Cederbom, head of the Swedish Geotechnical Institute in Linköping.

– In Sweden we have a crystalline, hard rock and therefore we have not the type of sinkhole as we can see in other countries. It is not at all the same type of processes that we can get in loose soils that can be undermined.

in Östergötland can sleep well?

– Yes , clean sinkholes, such as talking about abroad, is quite incredible in Sweden. The type of foundation to build and be on, we have not here.

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