Study of mining tailings geotechnical parameters obtained from SCPTu tests carried on dry and saturated layers

The correct interpretation of in situ and laboratory test results is an important step the design mining tailing containment structures. This study aims to analyze Seismic Cone Penetration Test (SCPTu) obtained into a reservoir composed two material layers: thick-dry tick-saturated. It possible observe that same reservoir, CPTu can lead classification each layer as different soil with specific behavior properties. condition demonstrates tailings intermediate permeability (10 -5 m/s < k 10 -8 m/s) may present partial drainage conditions during standard cone penetration (CPTu) (v=20 mm/s), if saturated are verified. effects affect results, induce errors prediction geotechnical parameters. To evaluate drainage, were compared tests results. was verify estimated dry layers, from more similarity tests. Probably, verified through dissipation tests, distorted material.