Average-DInSAR method for unstable escarpments detection induced by underground coal mining
A catastrophic rock avalanche from a tableland escarpment occurred at the Pusa village, Guizhou Province, southwest (SW) China, causing 35 fatalities and huge economic losses. The steep slope lies in the Longtan Formation coal-bearing shale of Permian, which is widely distributed in SW China. It was...
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| Format: | Article |
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Elsevier
2021-12-01
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| Series: | International Journal of Applied Earth Observations and Geoinformation |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0303243421001963 |
| _version_ | 1818233015558471680 |
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| author | Xin Yao Yiping Chen Donglie Liu Zhenkai Zhou Veraldo Liesenberg José Marcato Junior Jonathan Li |
| author_facet | Xin Yao Yiping Chen Donglie Liu Zhenkai Zhou Veraldo Liesenberg José Marcato Junior Jonathan Li |
| author_sort | Xin Yao |
| collection | DOAJ |
| description | A catastrophic rock avalanche from a tableland escarpment occurred at the Pusa village, Guizhou Province, southwest (SW) China, causing 35 fatalities and huge economic losses. The steep slope lies in the Longtan Formation coal-bearing shale of Permian, which is widely distributed in SW China. It was overlaid by brittle superstrata in Triassic and followed by gently anticline tectonic movement in Cenozoic, thus forming large-scale tableland escarpments with an “upper brittle, lower ductile” structure. Affected by underground coal mining activity at the base, this escarpment has become unstable and prone to failure. In order to further clarify the geological conditions and other influence factors for the Pusa landslide, we propose a newly improved multiple Differential Interferometric Synthetic Aperture Radar (DInSAR), named average-DInSAR, to detect the displacements on escarpments in a broad region. Extensive experimental results show that there existed obvious pre-failure displacements on the swarming escarpments, evidencing their unstable state, which were verified by field inspection. The spatiotemporal correlation analysis suggests that this abnormal deformation is probably induced by underground coal mining in the vicinity. Further confirming that the special geological conditions and nearby coal mining activity were responsible for the 2017 Pusa rock avalanche. Our study also demonstrates that the average-DInSAR method is simple and effective, which can overcome low coherence and noise of DInSAR, especially for shorter X- or C-band SAR data. Application of proposed method would permit to detect displacement before slope failure with higher re-visiting frequency, thus helping define early warning strategies for landslides in area with similar geological conditions. |
| first_indexed | 2024-12-12T11:15:28Z |
| format | Article |
| id | doaj.art-f9a0d6eb75cb49658f79328a01c6b8be |
| institution | Directory Open Access Journal |
| issn | 1569-8432 |
| language | English |
| last_indexed | 2024-12-12T11:15:28Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Applied Earth Observations and Geoinformation |
| spelling | doaj.art-f9a0d6eb75cb49658f79328a01c6b8be2022-12-22T00:26:10ZengElsevierInternational Journal of Applied Earth Observations and Geoinformation1569-84322021-12-01103102489Average-DInSAR method for unstable escarpments detection induced by underground coal miningXin Yao0Yiping Chen1Donglie Liu2Zhenkai Zhou3Veraldo Liesenberg4José Marcato Junior5Jonathan Li6Key Laboratory of Active Tectonics and Geology Safety, MNR, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China; Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, ChinaFujian Key Laboratory of Sensing and Computing for Smart Cities, School of Informatics, Xiamen University, Xiamen, China; Corresponding authors.First Surveying and Mapping Institute of Guizhou Province, Guiyang, China; Corresponding authors.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, ChinaSanta Catarina State University, Lages, BrazilFaculty of Engineering, Architecture and Urbanism and Geography, Federal University of Mato Grosso do Sul, BrazilDepartment of Geography and Environmental Management and the Department of Systems Design Engineering, University of Waterloo, Waterloo, CanadaA catastrophic rock avalanche from a tableland escarpment occurred at the Pusa village, Guizhou Province, southwest (SW) China, causing 35 fatalities and huge economic losses. The steep slope lies in the Longtan Formation coal-bearing shale of Permian, which is widely distributed in SW China. It was overlaid by brittle superstrata in Triassic and followed by gently anticline tectonic movement in Cenozoic, thus forming large-scale tableland escarpments with an “upper brittle, lower ductile” structure. Affected by underground coal mining activity at the base, this escarpment has become unstable and prone to failure. In order to further clarify the geological conditions and other influence factors for the Pusa landslide, we propose a newly improved multiple Differential Interferometric Synthetic Aperture Radar (DInSAR), named average-DInSAR, to detect the displacements on escarpments in a broad region. Extensive experimental results show that there existed obvious pre-failure displacements on the swarming escarpments, evidencing their unstable state, which were verified by field inspection. The spatiotemporal correlation analysis suggests that this abnormal deformation is probably induced by underground coal mining in the vicinity. Further confirming that the special geological conditions and nearby coal mining activity were responsible for the 2017 Pusa rock avalanche. Our study also demonstrates that the average-DInSAR method is simple and effective, which can overcome low coherence and noise of DInSAR, especially for shorter X- or C-band SAR data. Application of proposed method would permit to detect displacement before slope failure with higher re-visiting frequency, thus helping define early warning strategies for landslides in area with similar geological conditions.http://www.sciencedirect.com/science/article/pii/S0303243421001963LandslideTableland escarpmentUnderground coal miningAverage-DInSAR |
| spellingShingle | Xin Yao Yiping Chen Donglie Liu Zhenkai Zhou Veraldo Liesenberg José Marcato Junior Jonathan Li Average-DInSAR method for unstable escarpments detection induced by underground coal mining International Journal of Applied Earth Observations and Geoinformation Landslide Tableland escarpment Underground coal mining Average-DInSAR |
| title | Average-DInSAR method for unstable escarpments detection induced by underground coal mining |
| title_full | Average-DInSAR method for unstable escarpments detection induced by underground coal mining |
| title_fullStr | Average-DInSAR method for unstable escarpments detection induced by underground coal mining |
| title_full_unstemmed | Average-DInSAR method for unstable escarpments detection induced by underground coal mining |
| title_short | Average-DInSAR method for unstable escarpments detection induced by underground coal mining |
| title_sort | average dinsar method for unstable escarpments detection induced by underground coal mining |
| topic | Landslide Tableland escarpment Underground coal mining Average-DInSAR |
| url | http://www.sciencedirect.com/science/article/pii/S0303243421001963 |
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