The first of Measurand’s 150 metre long SAAs has been installed in one of the world’s largest tailings dams at Zelazny Most, Poland, in October 2015.
Zelazny Most tailing pond, located near a town with that name in Western Poland, is one of the largest in the world. Measurand recently provided a 150 metre-long SAA for vertical installation in the toe of the dam, as part of a thorough monitoring program being carried out by the dam's owners, KGHM Polska Miedz. Previously, SAA had been available only up to 100 m long. The new length is accompanied by a doubling in pressure rating to 20 bar, or 200 m of water column. The SAA was installed by the "SAA + PVC" method, whereby both the SAA and its covering tube of 27 mm ID PVC are inserted into the borehole at the same time. The PVC is sufficiently flexible to curve up and over a support that keeps it to a radius of no less than 3.5 m, and into the borehole.
Measurand was pleased to work with a team that included owners KGHM; Geo-Observations, Authorized Measurand Distributor for the UK and Ireland, and previously active in instrumenting pore pressure measurements at the dam; and Budokop Sp. z o.o., a very professional geotechnical installation and monitoring company based in Poland.
Read more in Measurand's Article here!
Source: Measurand
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