System and method for automatically and quantitatively analyzing coal rock ray plate fracture

Abstract

The invention discloses a system and a method for automatically and quantitatively analyzing a coal rock ray plate fracture, relates to the technical field of development of coal energy sources and aims at providing a system and a method for automatically and quantitatively analyzing the coal rock ray plate fracture which is simple to operate, quick in analysis and accurate in test result. The system comprises a microscope automatic platform control system and a microscopic image analyzing system. The method comprises the steps of connecting the microscope automatic platform control system and the microscopic image analyzing system to a fluorescence microscope; adjusting the fluorescence microscope; setting calibration; panoramically scanning and collecting images; setting image parameters and performing statistical processing and analysis on the coal rock ray plate fracture. According to the system and the method for automatically and quantitatively analyzing the coal rock ray plate fracture, the microscope automatic platform control system and the microscopic image analyzing system are connected to the fluorescence microscope, so that the testing results are more accurate; the situation of recounting the fracture is avoided. The method is simple to operate and quick in analysis, manual time consumption is reduced, analysis projects are increased, personal errors are eliminated and the test results are abundant and accurate.

Description

technical field [0001] The invention relates to the technical field of energy development, in particular to a system and method for automatically quantitatively analyzing cracks in coal rock light slices. Background technique [0002] Fractures in coal are often collectively referred to as cleats, which are the main channels for coalbed methane seepage. The degree of development of fissures directly controls the permeability of coal reservoirs, which is related to the productivity of coalbed methane wells. Therefore, the quantitative characterization of coal-rock fractures is It is an important part of the research on the physical properties of coal reservoirs. The main method used by the predecessors to measure and count coal and rock fractures is: firstly, the coal rock sample is polished to make a coal rock light slice with a specification of 30mm×30mm, and then the coal rock light slice is divided into 9 microscopic slices of 10mm×10mm under a microscope. area, obtained...

AI Technical Summary

Problems solved by technology

[0003] In the long-term practical work of microscopic observation of cracks, we found that under the reflected light microscope, the cracks or scratches in the coal and rock light slices cannot be clearly distinguished, and it is easy to count the cracks generated by the slice as cracks, resulting in erroneous results

At the same time, this existing statistical method for coal and rock fracture measurement is cumbersome and time-consuming, and it is necessary to manually move the sample to switch to the next field of view when observing under the microscope

Moreover, the amount of information in the statistical results of fractures is small, and the analysis items are limited, which makes it difficult to meet the needs of fine and quantitative characterization of coal reservoir physical parameters.

At the same time, instrument operation and human subjective judgment have a great influence on the test results, which may lead to human errors in the statistical results of coal and rock fractures

Therefore, this method of characterization of coal and rock fractures has great limitations and inaccuracy, and needs to be improved and replaced.

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