Surface movement above old coal longwalls after mine closure
Although most subsidence occurs in the months and years after mining by the longwall method, surface movement is still occurring many decades after the mining. The aim of the study is to quantify the long term behavior. Satellite data (radar-interferometry) were analyzed to study an area of about 2 ...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-05-01
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| Series: | International Journal of Mining Science and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268617302306 |
| _version_ | 1818933892852219904 |
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| author | André Vervoort Pierre-Yves Declercq |
| author_facet | André Vervoort Pierre-Yves Declercq |
| author_sort | André Vervoort |
| collection | DOAJ |
| description | Although most subsidence occurs in the months and years after mining by the longwall method, surface movement is still occurring many decades after the mining. The aim of the study is to quantify the long term behavior. Satellite data (radar-interferometry) were analyzed to study an area of about 2 km2 during the 18 years following the closure of the underground infrastructure and the flooding of the underground workings and rock mass. It was observed that, on average, a residual downward movement took place till 7–12 years after the closure, followed by a clear uplift. However, the first signs of an uplift occurred in certain sub-areas 3–4 years after the closure. Zones within the area studied were identified with either larger or smaller movements. However, the spatial variation of the surface subsidence or uplift could not be directly explained by the characteristics of mining. Keywords: Coal mining, Surface movement, Subsidence, Uplift, Radar-interferometry |
| first_indexed | 2024-12-20T04:55:36Z |
| format | Article |
| id | doaj.art-eb415d69cb6c443e99b075ee3029de90 |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-12-20T04:55:36Z |
| publishDate | 2017-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-eb415d69cb6c443e99b075ee3029de902022-12-21T19:52:43ZengElsevierInternational Journal of Mining Science and Technology2095-26862017-05-01273481490Surface movement above old coal longwalls after mine closureAndré Vervoort0Pierre-Yves Declercq1Department of Civil Engineering, KU Leuven, Leuven 3001, Belgium; Corresponding author.Geological Survey of Belgium, Royal Belgian Institute of Natural Sciences, Brussels 1000, BelgiumAlthough most subsidence occurs in the months and years after mining by the longwall method, surface movement is still occurring many decades after the mining. The aim of the study is to quantify the long term behavior. Satellite data (radar-interferometry) were analyzed to study an area of about 2 km2 during the 18 years following the closure of the underground infrastructure and the flooding of the underground workings and rock mass. It was observed that, on average, a residual downward movement took place till 7–12 years after the closure, followed by a clear uplift. However, the first signs of an uplift occurred in certain sub-areas 3–4 years after the closure. Zones within the area studied were identified with either larger or smaller movements. However, the spatial variation of the surface subsidence or uplift could not be directly explained by the characteristics of mining. Keywords: Coal mining, Surface movement, Subsidence, Uplift, Radar-interferometryhttp://www.sciencedirect.com/science/article/pii/S2095268617302306 |
| spellingShingle | André Vervoort Pierre-Yves Declercq Surface movement above old coal longwalls after mine closure International Journal of Mining Science and Technology |
| title | Surface movement above old coal longwalls after mine closure |
| title_full | Surface movement above old coal longwalls after mine closure |
| title_fullStr | Surface movement above old coal longwalls after mine closure |
| title_full_unstemmed | Surface movement above old coal longwalls after mine closure |
| title_short | Surface movement above old coal longwalls after mine closure |
| title_sort | surface movement above old coal longwalls after mine closure |
| url | http://www.sciencedirect.com/science/article/pii/S2095268617302306 |
| work_keys_str_mv | AT andrevervoort surfacemovementaboveoldcoallongwallsaftermineclosure AT pierreyvesdeclercq surfacemovementaboveoldcoallongwallsaftermineclosure |