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30 October 2008
Highway 97: test blast
The latest report on the Highway 97 problem in Canada (see earlier posts here, here and here) is as follows: The contractor, Arthon, released a statement to the press yesterday, the key points of which stated that “Highway 97 remains closed north of Summerland until further notice due to an unstable rock mass above the highway. The slope continues to move, therefore the highway is not safe to reopen. Safety …
29 October 2008
Highway 97 latest update
The latest update on the Highway 97 landslide in Canada (see here and here) is as follows: The slope is still moving. Between 19:00 on Monday and 14:00 on Tuesday the mass moved about 15 millimetres (i.e. about 0.8 mm per hour). This is quite high for a large mass. The rate of movement is described as being constant; The mobile volume is now estimated to be 200,000 cubic metres; …
27 October 2008
Interesting slide on Highway 97 in Canada
Thanks to Andrew Giles for bringing this one to my attention. Highway 97 in British Columbia is currently being upgraded through the Okanagan Valley (Fig. 1). This project is being undertaken by Arthon – their project website describes this as: “Four lane roadworks and 1,000,000 m3 rock removal over a 7 km section of BC’s main north-south highway corridor. The B.C. Ministry of Transportation awarded Arthon Contractors Inc. a $38.6 …
7 August 2008
A follow up to the Sea to Sky Highway landslide
Back on 1st August I posted about a landslide that had blocked the Sea to Sky Highway (Canadian Highway 99), which links Vancouver to Whistler, venue of the 2010 Winter Olympic Games. The road was blocked for a few days, but has now reopened. Two sets of colleagues in Canada have very kindly provided follow ups to that post. First, Frank Baumann, who is a geotechnical engineer in Squamish has …
20 May 2008
The problem of cracks in mountains after earthquakes
Xinhua is today reporting the following:Nearly 9,000 people in a quake zone were evacuated on Tuesday for fear that huge cracks on a mountain could lead to further disasters. Many crevices, measuring up to 1,500 meters long, 250 m high and 50 centimeters wide, have been spotted on the Shiziliang Mountain in the Qingchuan County seat, Guangyuan City, since Sunday, threatening about 50,000 people and quake-relief soldiers. Part of the …
Dave Petley is the Vice-Chancellor of the University of Hull in the United Kingdom. His blog provides commentary and analysis of landslide events occurring worldwide, including the landslides themselves, latest research, and conferences and meetings.
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