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Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR
Most of the coal mines in Southwest China are located in mountainous areas with high vegetation coverage, and most activities are carried out under the mountains. The deformation monitoring and mechanical behavior analysis of the mining area helps reveal the typical mountain deformation and failure...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9611886/ https://www.ncbi.nlm.nih.gov/pubmed/36298162 http://dx.doi.org/10.3390/s22207811 |
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author | Liu, Maoqi Long, Sichun Wu, Wenhao Liu, Ping Zhang, Liya Zhu, Chuanguang |
author_facet | Liu, Maoqi Long, Sichun Wu, Wenhao Liu, Ping Zhang, Liya Zhu, Chuanguang |
author_sort | Liu, Maoqi |
collection | PubMed |
description | Most of the coal mines in Southwest China are located in mountainous areas with high vegetation coverage, and most activities are carried out under the mountains. The deformation monitoring and mechanical behavior analysis of the mining area helps reveal the typical mountain deformation and failure mechanism caused by underground mining activities and reduce the risk of mountain collapse in the mining area. In this manuscript, a research method for mountain stability in mining areas is proposed, which combines InSAR deformation monitoring with numerical analysis. Based on the high-precision deformation information obtained by DS-InSAR and the landslide range, a three-dimensional explicit finite difference numerical analysis method was used to reconstruct the landslide model. According to the layout of the coal mining working face, the variation mechanism of overlying stratum stress and the mountain slip in the coal mining process is inverted, and the mechanism of mountain failure and instability in the mining area is analysed. Based on the sentinel data, the experiment performed time series monitoring and inversion analysis of the mountain collapse in Nayong, Guizhou, China. The results show that mining activities a certain distance from the mountain will affect mountain stability, and there are specific mechanisms. From 2015 to 2017, the stress redistribution of overlying strata above the goaf area resulted in dense longitudinal cracks in the landslide body due to coal mining. The mountain is in a continuous damage state, and the supporting force to prevent collapse continues to decrease, resulting in a gradual decrease in landslide stability. Both the time series DS-InSAR monitoring results and numerical simulation results verify the actual occurrence and development of the on-site subsidence. |
format | Online Article Text |
id | pubmed-9611886 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96118862022-10-28 Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR Liu, Maoqi Long, Sichun Wu, Wenhao Liu, Ping Zhang, Liya Zhu, Chuanguang Sensors (Basel) Article Most of the coal mines in Southwest China are located in mountainous areas with high vegetation coverage, and most activities are carried out under the mountains. The deformation monitoring and mechanical behavior analysis of the mining area helps reveal the typical mountain deformation and failure mechanism caused by underground mining activities and reduce the risk of mountain collapse in the mining area. In this manuscript, a research method for mountain stability in mining areas is proposed, which combines InSAR deformation monitoring with numerical analysis. Based on the high-precision deformation information obtained by DS-InSAR and the landslide range, a three-dimensional explicit finite difference numerical analysis method was used to reconstruct the landslide model. According to the layout of the coal mining working face, the variation mechanism of overlying stratum stress and the mountain slip in the coal mining process is inverted, and the mechanism of mountain failure and instability in the mining area is analysed. Based on the sentinel data, the experiment performed time series monitoring and inversion analysis of the mountain collapse in Nayong, Guizhou, China. The results show that mining activities a certain distance from the mountain will affect mountain stability, and there are specific mechanisms. From 2015 to 2017, the stress redistribution of overlying strata above the goaf area resulted in dense longitudinal cracks in the landslide body due to coal mining. The mountain is in a continuous damage state, and the supporting force to prevent collapse continues to decrease, resulting in a gradual decrease in landslide stability. Both the time series DS-InSAR monitoring results and numerical simulation results verify the actual occurrence and development of the on-site subsidence. MDPI 2022-10-14 /pmc/articles/PMC9611886/ /pubmed/36298162 http://dx.doi.org/10.3390/s22207811 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liu, Maoqi Long, Sichun Wu, Wenhao Liu, Ping Zhang, Liya Zhu, Chuanguang Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR |
title | Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR |
title_full | Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR |
title_fullStr | Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR |
title_full_unstemmed | Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR |
title_short | Instability Monitoring and Numerical Analysis of Typical Coal Mines in Southwest China Based on DS-InSAR |
title_sort | instability monitoring and numerical analysis of typical coal mines in southwest china based on ds-insar |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9611886/ https://www.ncbi.nlm.nih.gov/pubmed/36298162 http://dx.doi.org/10.3390/s22207811 |
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