Coal-rock identification method based on terahertz multi-parameter spectrums

Abstract

The invention discloses a coal-rock interface identification method based on terahertz time-domain spectrums, and belongs to the technical field of coal-rock interface identification, coal-mining-machine automatic heightening and unmanned and intelligent exploitation. The terahertz time-domain spectrums of coal-rock samples are collected through a terahertz spectrograph, and the terahertz time-domain spectrums are converted into terahertz frequency-domain spectrums through fast fourier transform; transmittance spectrums, refractive index spectrums and absorption coefficient spectrums are extracted from the terahertz frequency-domain spectrums; detected spectrum data is subjected to dimensionality reduction and feature extracting with the LDA technology, and optical parameter spectrums aresubjected to deep neural network analysis modeling; coal rock of detected areas is collected and used for making samples, the terahertz time-domain spectrums of the coal-rock samples are obtained, andare processed in the step 2 to be put into the model established in the step 3 and the step 4, and coal-rock interface identification is carried out. Coal-rock media are rapidly, efficiently and accurately identified, accurate identification of the slicing state of a coal mining machine can be achieved, and the automatic heightening aim of the coal mining machine is achieved.

Description

technical field [0001] The invention relates to a method for identifying a coal-rock interface based on a terahertz multi-parameter spectrum, and belongs to the technical fields of coal-rock interface identification, self-adjustment of a shearer, and unmanned and intelligent mining. Background technique [0002] Unmanned and intelligent working face mining technology is an efficient and safe mining method, which can effectively reduce personnel accidents and ensure safe mining in coal mines. It is also the development direction and trend of the coal mining industry. The "13th Five-Year Plan" of coal science and technology clearly pointed out that it is necessary to fully implement the innovation-driven development strategy, overcome the relevant key technologies in intelligent mines, and bring intelligent control technology into the main production links of coal. To achieve this goal, we must first solve the problem of intelligent identification of coal rocks, which is also ...

AI Technical Summary

Problems solved by technology

Even when coal and rock properties are similar, the joint use of coal and rock terahertz transmission spectrum, absorption spectrum, and refractive index spectrum and reasonable use of deep learning technology ca

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