Yang XIANG, Shi-bo WANG, Shi-rong GE, Sai-ya WANG, Yue ZHOU, Yuan-bo LÜ, En YANG. Study on Near-Infrared Spectrum Features and Identification Methods of Typical Coal-Rock in Dust Environment[J]. Spectroscopy and Spectral Analysis, 2020, 40(11): 3430
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 11, 3430 (2020)
Fig. 1. Dust-near infrared spectroscopy experimental device
Fig. 2. Spectra of 23 coal and rock samples
(a): 11 typical coal measures samples(b): 12 typical coal samples
(a): 11 typical coal measures samples(b): 12 typical coal samples
Fig. 3. Near-infrared spectroscopy of different dust concentrations in typical coal samples
(a): Sample 2, anthracite No.2;(b): Sample 10, gas coal;(c): Sample 12, lignite coal
(a): Sample 2, anthracite No.2;(b): Sample 10, gas coal;(c): Sample 12, lignite coal
Fig. 4. Near-infrared spectra of different dust concentrations in typical rock samples
(a): Sample 17, sandy shale No.2;(b): Sample 20, siltstone No.1;(c): Sample 23, argillaceous limestone No.2
(a): Sample 17, sandy shale No.2;(b): Sample 20, siltstone No.1;(c): Sample 23, argillaceous limestone No.2
Fig. 5. Angle cosine between experimental samples and standard samples
Fig. 6. Correlation between experimental samples and standard samples
Fig. 7. Processed standard spectral database by SG+SNV
(a): Typical coal measures samples;(b): Typical coal samples
(a): Typical coal measures samples;(b): Typical coal samples
Fig. 8. Angle cosine between experiment samples and standard samples
Fig. 9. Correlation coefficient between experimental samples and standard samples
Fig. 10. Coal and rock identification results of experimental samples by two recognition models
(a): Spectral angle matching (SAM);(b): Pearson correlation coefficient
(a): Spectral angle matching (SAM);(b): Pearson correlation coefficient
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Table 1. Experimental dust injection
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Table 2. Experimental samples table
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Table 3. Sample table for coal rock cluster analysis
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Table 4. Coal and rock identification results of two models
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