Solid Waste Load-Bearing Deformation Through Particle Breakage Analysis
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Solution Overview
Problem
Existing methods for determining load-bearing deformation of solid waste materials in backfill mining lack detailed observation of post-crack fragmentation, leading to inaccurate deformation results due to ignoring the impact on mechanical behavior.
Innovation Solution
A method involving compaction experiments to obtain stress-strain curves, calculating slope k, relative breakage rate Br, and fractal dimension D, and constructing a macroscopic strain relationship equation to determine load-bearing deformation by substituting measured fractal dimension into the equation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If macroscopic observation method is used to measure load-bearing deformation, then overall data of solid waste materials can be obtained, but detailed observation of post-crack fragmentation is lacking and deformation results are inaccurate
Solution Approach 1:
The patent segments the measurement approach by combining macroscopic compaction testing with microscopic particle size analysis. The solid waste materials are divided into different particle size ranges through sieving, and the deformation characteristics are analyzed at both the bulk level and the particle level, allowing detailed observation of post-crack fragmentation while maintaining overall deformation measurement
Solution Approach 2:
The patent introduces particle size distribution as an intermediary parameter to bridge macroscopic deformation and microscopic fragmentation. By measuring how particle size distribution changes during compaction, the method captures detailed fragmentation information that would be invisible in pure macroscopic observation, thereby improving measurement accuracy without requiring direct observation of individual crack events
2Ease of operation
If macroscopic observation method is used, then measurement process is simple, but post-crack fragmentation impact on mechanical behavior is ignored
Solution Approach 1:
The patent extracts particle size distribution data from the compaction process by performing sieve analysis at different stages. This extraction of detailed particle information from the bulk material allows the measurement process to capture post-crack fragmentation characteristics while building upon the simple macroscopic compaction framework
Solution Approach 2:
The patent monitors changes in particle size distribution parameters (d10, d30, d50, d90) as the material undergoes compaction and cracking. By tracking these parameter changes, the method captures fragmentation information that would otherwise be lost in macroscopic observation, transforming simple compression testing into a detailed fragmentation analysis tool
Data Source
AI summary
Disclosed a method, a system, a device, and a medium for determining load-bearing deformation of solid waste materials. The method includes: obtaining a bulk sample of solid waste material, sieving the sample to obtain multiple particle sizes, and measuring the mass of each particle size before the experiment; performing a compaction experiment on the bulk sample to obtain a stress-strain relationship curve, and calculating a slope of a linear part; sieving the bulk sample after the compaction experiment to obtain multiple particle sizes, and measuring a mass of each particle size; plotting a mass ratio diagram before and after the experiment, and calculating a relative breakage rate Br and a measured fractal dimension; constructing a macroscopic strain relationship equation, substituting the measured fractal dimension into the equation to obtain a macroscopic strain, and thereby determining load-bearing deformation degree of the solid waste materials.