| Autor: |
JIN Mingfang, ZHANG Gaoqing, XU Kun, YAO Xiaoshuai, ZHAO Hongli |
| Jazyk: |
čínština |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Meikuang Anquan, Vol 52, Iss 1, Pp 103-106 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1003-496X |
| DOI: |
10.13347/j.cnki.mkaq.2021.01.019 |
| Popis: |
In order to solve the problem that it is difficult to accurately detect the geological factors causing disasters, the seismic channel wave exploration technology is used to detect the geological factors such as the thickness of coal seam and faults in 11061 working face of Yi’an Mining Industry. Through the analysis of the dispersion curve, we select the appropriate channel wave frequency, carry out short-time Fourier transform on the channel wave train, extract the traveling time of the channel wave in the frequency domain and carry out CT imaging, obtain the isoline map of the channel wave speed, fit the wave speed with the actual exposed thickness of the coal seam, and then obtain the isopach map of the coal seam; through the analysis of the channel wave ray distribution map, it is determined that there are no faults within the working face with a drop greater than 1/2 coal thickness. Through the mining verification, the actual mining situation is basically consistent with the exploration results. The mine optimizes the local outburst prevention measures according to the exploration results, and there is no abnormal gas emission during the mining process; the monthly production plan is adjusted according to the thickness change of the coal seam to ensure the stability of the production. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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