Lugeon tests are in-situ hydraulic tests performed in boreholes to determine the permeability or hydraulic conductivity of rock masses. The primary purpose is to quantify the water-tightness of the rock formation by measuring the rate at which water is injected into a section of the borehole under a specific pressure. The results are expressed in Lugeon units (LU), where 1 LU corresponds to a water intake of 1 liter per meter of borehole length per minut....
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