ABSTRACT
The article presents selected advantages of a wide range of applied soil testing methods in the field used to evaluate undesirable changes in soil and water conditions at the site of critical infrastructure represented by a drinking water pipeline. The pipeline is located in the flood zone of a large lowland river. Various testing methods were applied due to the diverse geological structure characterised by the high dynamics of geomorphology evolution. Drilling, two penetration methods (Cone Penetration Test with pore water pressure measurement - CPTu, Dynamic Probing Super Heavy - DPSH), piezometric observation, three geophysical methods (Electrical Resistivity Tomography - ERT, Seismic Refraction Tomography - SRT, Multichannel Analysis of Surface Waves - MASW), and laboratory tests were done. Hence, it was possible to identify the exact locations of soils susceptible to deformations inducted by seepage zones. The paper briefly synthesises the selected results of the realized field and laboratory tests.
