Calculation of Permeability Coefficients of Soils and Marine Sediments

摘要

A BASIC program is described which calculates permeability coefficients from dataobtained by laboratory measurement using a variable-head permeability apparatus. The program also calculates two quantities from the experimental data which are functions of hydrostatic pressure change and time interval, respectively. Output is printed and stored in a data file for statistical processing or graphical presentation using a commercial software package. A data collection method is explained which permits the recognition of sample disturbance, such as the formation of large flow channels, arising during the course of testing. Use of the program is demonstrated using data for three natural sediment samples tested on a variable-head permeability apparatus with back pressure.