Grading material specific area determining method based on three-dimensional laser scanning and image processing technology

Abstract

The invention discloses a grading material specific area determining method based on three-dimensional laser scanning and the image processing technology. For a rock mass larger than 50mm, three-dimensional scanning point clouds are obtained; a rock mass three-dimensional model is established by using the scanning point clouds to obtain the volume and the surface area of the rock mass; and the specific area is the rock mass larger than 50mm is obtained by calculating based on a specific area definition. For a rock mass with the size being 5-50mm, the circumference and area are calculated by using image processing; and the specific area of the rock mass with the size being 5-50mm is calculated by using a spherical model. The specific area of a powder particle being smaller than 5mm is obtained by referring to specific area test results of existing powder materials. A rock mass size-specific area variation curve is drawn based on specific area data obtained by the three modes. A gradation distribution curve of rockburst is obtained. The rock mass size-specific area variation curve and the gradation distribution curve of the rockburst are drawn in one diagram to obtain a grading material specific area curve.

Description

technical field [0001] The invention belongs to the technical field of engineering blasting, in particular to a method for determining the specific surface area of ​​graded ingredients based on three-dimensional laser scanning and image processing technology. Background technique [0002] Blasting excavation is an important means of mining artificial aggregates in the construction of water conservancy and hydropower projects in my country and mineral resources in mining projects. In order to meet the aggregate gradation and lumpiness requirements during engineering construction or ore processing, reduce production time, and control production costs, the ideal situation is that the stones obtained by blasting can directly meet or approach the design gradation and lumpiness requirements. Stones that do not meet the design gradation and lumpiness requirements need to be crushed by crushing machinery. This process not only increases additional personnel and machinery investment,...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the shortcomings of the existing method for measuring the specific surface area of ​​materials, such as the need to process test samples, complex sample processing technology, cumbersome test procedures, complicated calculation principles, and strict requirements on the size of the material to be tested, the present invention provides an efficient, convenient, and material-free method. A method for determining the specific surface area of ​​graded ingredients based on three-dimensional laser scanning and image processing technology with limited size and guaranteed calculation accuracy. This invention can not only directly measure the specific surface area of ​​intermediate ingredients in explosive piles (or piles after mechanical crushing), but also use drawing The specific surface area curve of the grading material to evaluate the utilization rate of energy in the process of rock crushing

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