Technischer Bericht NTB 86-07

Sondierbohrung RinikenBau- und Umweltaspekte, Bohrtechnik

The exploration weIl at Riniken was realized as the third weIl within the Nagra Deep Drilling Program in Northern Switzerland.

The drilling work was started June 23, 1983. Having reached the final depth of 1800.5 m on January 13, 1984 the test phase was then initiated and completed by July 23, 1985.

The weIl drilled approx. 1800 m of sediments. Oriented cores were taken over the major part of the weIl. The expected crystalline rock was not reached.

The present report presents the drilling activities, civil construction work related to the site and precautions taken to account for environmental protection aspects.

A chapter dealing with the commission representing members of the federal, cantonal and local authorities and reporting is given at the end of this report.