DISCUSSION ON THE REASONABLE NUMBER OF SAMPLES FOR GEOTECHNICAL INVESTIGATION

The reasonable number of samples depends on the properties of soil, characteristic of indexes, quality of samples, and requirements for the engineering project. On the basis of analysis of variation of physical and mechanical indexes of each major soil layer in coastal plain, the reasonable number of samples for geotechnical engineering prospecting is suggested in the light of different physical mechanical indexes of different soil layers by using probability statistical method.