Lugeon test

The Lugeon test (after the Swiss geologist Maurice Lugeon ; also: WD test, water pressure test, water pressure test ) is a test in mining , drilling and geotechnical engineering in a borehole , in which the permeability of the surrounding rock is injected is checked by water.

The amount of water injected is measured in the unit Lugeon (Lu):

${\displaystyle \mathrm {1Lu=1{\frac {L}{min\cdot m\cdot 10\,bar}}} }$

( Amount of water per borehole length at a certain pressure).

The permeability determined with the Lugeon test is decisive for the need to seal the bedrock and e.g. B. to be grouted with cement . On the other hand, it is a test to check the success of a previous pressing, e.g. B. with a sealing curtain .

Web links

• Lugeon ( Memento from June 22, 2007 in the Internet Archive )
• Miner's Toolbox ( Memento of July 9, 2007 in the Internet Archive )
• Matthias Schreiner, Klaus Kreysing: Handbook for exploring the subsurface of landfills and contaminated sites, pp. 299–311
• Müller, Blümel, Introduction to Hydraulic Engineering and Water Management (PDF; 644 kB) Chapter 8: Dams and hydropower plants p. 30