Study of SPT behavior of penetration resistance under influence of the groundwater level fluctuation, using geostatistical methodology

摘要

The kriging ordinary geostatistical methodology was used in mapping the ground-water level to verity the influence of its fluctuation on spatial behavior of the penetration resistance index of the standard penetration test (SPT). The geostatistical mapping was made by carefully separating the 241 boreholes into two big groups, using the criterion of data base analysis monthly and annual pluviometric of the studied area; and as an end result six maps were obtained: groundwater level fluctuation map, penetration resistance index variation maps at a depth of 1,5; 6,0; 8,5; 11,0 and 13,5 m. The greatest variations of penetration resistance index in increase as well as in reduction of the resistance, occurred at a depth of 6,0 and 8,5 m; and the remaining depths: 1,5; 11,0 and 13,5 m were the smallest variations to the penetration resistance index in both situations.