Cemented backfill microscopic parameter sensitivity analysis method based on image processing

Abstract

The invention discloses a cemented backfill microscopic parameter sensitivity analysis method based on image processing. The method comprises the steps of 1, preparing an SEM scanning electron microscope sample and a single-axis compressive strength testing sample; 2, performing single-axis compressive strength testing on a plurality of compressive strength testing samples by means of a cemented backfill single-axis compressive strength testing device, and obtaining the single-axis compressive strength of a plurality of cemented backfill samples; 3, obtaining a microscopic parameter set of theplurality of cemented backfills; and 4, calling the microscopic parameter and a sensitivity analysis module for the single-axis compressive strength for performing sensitivity analysis on the single-axis compressive strength of the plurality of cemented backfill samples and the microscopic parameter set of the plurality of cemented backfills, and determining the sensitivity microscopic parameterof the cemented backfill to mechanical response characteristic sensitivity. The method can well determine a primary and secondary relation of the microscopic parameters and can help in researching a new cemented backfill.

Description

technical field [0001] The invention relates to the technical field of cemented filling mining, in particular to a method for analyzing the sensitivity of microscopic parameters of cemented filling bodies based on image processing. Background technique [0002] With the development of national science and technology, the requirements for energy saving and environmental protection technology are getting higher and higher. Traditional cemented backfill mining uses cement as the cementitious material, and the cost of cement is as high as 75% of the total backfill cost. Through research and development, tailings contain active silica and alumina, and using tailings instead of part of cement as cementing material can not only reduce the discharge of tailings, effectively reduce the cost of filling mining, but also improve the strength of the filling body and reduce the ground The collapsed area also plays an active role in promoting the protection of the environment. Therefore, ...

AI Technical Summary

Problems solved by technology

So far, there are few related studies on the sensitivity analysis of the micro-parameters of the cemented filling body on the mechanical response, so the primary and secondary relationship of the micro-parameters cannot be well determined. The time-consuming method is complex and inefficient, which affects the rapid popularization and application of the new cemented filling body, and is likely to cause delays in the mining period.

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