Method for determining load-bearing deformation of solid waste materials and system and device and medium thereof

A method for determining load-bearing deformation of solid waste materials comprises following steps:

• obtaining a bulk sample of solid waste materials, sieving, by a sifter, the bulk sample to obtain a plurality of particle size samples, and measuring, by a weighing instrument, a mass of each of particle size samples before an experiment;
• performing, by a compactor, a compaction experiment on the bulk sample to obtain a stress-strain relationship curve of the bulk sample, and calculating, by a computer, a slope k of a linear part of the stress-strain relationship curve;
• wherein a formula for calculating the slope k of the linear part of the stress-strain relationship curve is:
• k
• =
• lg
• 10
• [
• M
• ⁡
• (
• d
• i
• )
• M
• T
• ]
• /
• lg
• 10
• [
• d
• i
• d
• max
• ]
• ;
• wherein di is a particle size, M(di) is a mass of particles smaller than the particle size di, MT is a total mass of the sample, and dmax is a maximum particle size;
• sieving, by the sifter, the bulk sample after the compaction experiment to obtain a plurality of particle size samples, and measuring, by the weighing instrument, a mass of each of particle size samples after the experiment;
• plotting, by the computer, a mass ratio diagram of each of particle size samples before and after the experiment, and calculating, by the computer, a relative breakage rate Br and a measured fractal dimension of the bulk sample based on the mass ratio diagram;
• wherein a standardized equation for calculating a fractal dimension D of the bulk sample based on the mass ratio diagram is:
• {
• D
• =
• 3
• -
• k
• k
• =
• lg
• 10
• [
• M
• ⁡
• (
• d
• i
• )
• M
• T
• ]
• /
• lg
• 10
• [
• d
• i
• d
• max
• ]
• ;
• wherein D is the fractal dimension, and k is the slope of the stress-strain relationship curve;
• constructing, by the computer, a macroscopic strain relationship equation based on the slope k of the linear part of the stress-strain relationship curve, the relative breakage rate Br, and the standardized equation of the fractal dimension D;
• wherein a formula for constructing the macroscopic strain relationship equation is:
• ε=0.02029σ0.58836−0.80807x2+0.24292Br+0.5431n D−0.37245;
• wherein ε is macroscopic strain, σ is stress, x is porosity, Br is the relative breakage rate, and D is the fractal dimension;
• and
• substituting, by the computer, the measured fractal dimension of the bulk sample into the relationship equation to obtain the macroscopic strain of the solid waste materials, and thereby determining a load-bearing deformation degree of the solid waste materials;
• when the macroscopic strain of the solid waste materials is bigger, determining that the load-bearing deformation degree of the solid waste materials is bigger;
• when the macroscopic strain of the solid waste materials is smaller, determining that the load-bearing deformation degree of the solid waste materials is smaller.