Study on methods for estimating correlation distance of soil layers;

Study on the calculation methods of the correlation distance of soil property parameters;

Numerical studies and statistic analyses on correlation distances of soil character parameters;

The statistical uncertainty is considered in soil property correlative distance computation,and its influence to the correlation distance computed result is discussed.

On the basis of concept of smooth stochastic field ergodicity, conditions that soil strata are satisfied with ergodicity are discussed; and equations of calculating space mean variance and correlative distance are deduced.

In accoedance with soil layer probability Anel, the deftaltion of soil property correlative distance and the fundamenal of the vdriance whction fonction P (h ) suguted by Vche, ed on the mnce space average method, the PaPe ~ts the curve fitting Ineha to calculate the coedative distane, and proves the hoonality of the method on a thedical basis.

The applicability of the calculation method of soil index relative distance and the determining principle of the calculation results are also discussed taking the specific penetration resistance p s of the cone penetration test(CPT) as an example.

Both the two methods can be used to calculate the relative distance of the mechanical parameters of soil and rock .