Seepage Cut-off Wall Detection of Reservoir Based on Groundvue Series of Ground Penetrating Radar

In order to find out the serious and long plagued leakage problems related to the seepage cut-off wall of Nanmenxia Reservoir, used the introduced British Groundvue series of Ground Penetrating Radar equipment, field test and verify work were implied, leakage location and path were determined. The results showed that the seepage cut-off wall of dam foundation is well, its thickness is around 0.50m, but it has the horizontal distance of about 3m away from the current grouting platform, which may be one important cause that the previous grouting effects are bad. This provided important support for the Reinforcement Project of Nanmenxia Reservoir.