silting index การใช้

Finally , the correlation between partial silt indexes is studied . the correlation analyses between physical indexes can be used to decide whether these indexes can be looked as independent variable at the same time in reliability design , furthermore , the correlation between mechanical and physical are also studied and some empirical equations with practical usage are drawn up
Secondly , by characteristic statistic , the probabilistic distribution of silt indexes is roughly learned , then the normal and beta distribution probabilistic models are fitted for generally symmetric distribution indexes , and the beta distribution models for all indexes owing to their good adaptability . after tested , the indexes of cuu and < t > m fitted by the beta models are very good
Based on the engineering geologic investigation reports of 22 buildings and the author ' s own tests in lab ( which includes 18 groups of conventional test and compression test , 8 groups of unconsolidated undrained triaxial test and 8 groups of quick direct shearing test ) , taiyuan silt is studied in the paper . firstly , the variability of silt indexes is analyzed . the analyses results show the change laws on variability , in addition , the average value and variability coefficient ranges of silt indexes are given for reference