CORRELATION AMONG THE SOIL PARAMETERS OF THE KARNAPHULI RIVER TUNNEL PROJECT

Defining relationships among the soil parameters and strength properties have become a popular research topic among the soil mechanics researchers in recent years. As conducting laboratory tests are quite tiresome and time-consuming, investigating interconnection and correlation among the soil parameters using collected data will help to understand and predict the characteristics of soil effortlessly. This research aims at stating regression and product moment correlation analysis between the strength parameters and index properties of the soils of Karnaphuli river tunnel project site. Around 120 borings were done in that site to determine both the index and strength properties of the soil in the laboratories. In this paper, multiple linear regression analysis was developed for the cohesion and liquid limit along with the collected explanatory variables and correlation analysis was done to quantify the direction and strength of the linear association. This equation supports to adopt different characteristics of the soils of Karnaphuli River and additionally a statistical significance of correlation among different soil parameters have also been unfolded. Finally, the equation is compared with some of commonly used classical soil mechanics equation to determine the acceptability of this correlation.