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Dorset cliff ground investigation to start

Canford Cliffs

Ground investigations into the stability of Canford Cliffs in Dorset is to commence following a landslide in February 2017.

Over the next month three 30m boreholes will be drilled at the top of the cliff by contractor Geotechnical Engineering, to complement the galvanised steel targets already in place along the 300m of cliff last year.

In February 2017 a section measuring 10m wide and 0.5m deep, eroded and slipped and is now resting half way down the cliff face. Since the original slip more material has moved, and earlier this year further cliff movement required a safety zone to be established beneath the slip.

Channel Coastal Observatory has been undertaking the monitoring since April last year.

Canford Cliffs

Canford Ciffs

Target installation in April 2017

Borough of Poole cabinet portfolio holder responsible for the work John Challinor said: “Following last year’s cliff slide, special targets were installed in the cliff face to establish exactly where movement is happening.

“The results of the targets monitoring together with the geographical survey results will enable us to establish what future cliff stabilisation works will need to take place. “

Over the past 40 years there have been three significant slips at Canford Cliffs Chine. The first two in the the 1970s and one of these resulted in a block of beach huts being demolished, with a third significant slip in 1993. Each of the slips required stabilisation schemes including a system of transverse steel beams positioned down the cliff face and a series of soil nails to pin and hold a top section of the cliff.

 

 

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