Impacts of coal mining subsidence on the surface landscape in Longkou city, Shandong Province of China

Abstract

Coal mining subsidence is a common human geological disaster that was particularly conspicuous in China. It seriously restricts the sustainable development of mining areas, and it not only damages land resources but also triggers a series of ecological and environmental problems that may result in social and economic issues. This report studied the coal mining subsidence area of Longkou in Shandong province and uses digital elevation data (DEM) of the mining area before subsidence in 1978 as the baseline elevation. Through image algorithms, we obtained coal mining subsidence region data for 1984, 1996, 2000, and 2004. And with spatial data sources of the same period of TM/ETM ? and SPOT5 remote sensing images, BP artificial neural network (BPNN) classification is used to extract surface landscape information in the subsidence area. With the support of GIS technology, superimposing subsidence area on the surface landscapeusing the largest landscape ecology patch index, landscape shape index, landscape condensation index, and the index of landscape distribution-report analyzes the mining landscape changes before and after subsidence. This study also carries on exploratory research with the landscape changes, thereby providing a scientific basis for integrated prevention and treatment.

Application of decision tree model for the ground subsidence hazard mapping near abandoned underground coal mines

“…Recent studies have analyzed ground-subsidence hazards using the results of geological and geotechnical investigations, as well as probability, statistics, fuzzy algebra, and artificial neural network (ANN) models in geographic information system (GIS) applications (Ambro zi c and Turk, 2003;Kim et al, 2006;Esaki et al, 2008;Turer et al, 2008;Kim et al, 2009;Mancini et al, 2009;Quanyuan et al, 2009;Choi et al, 2010;Lee et al, 2010;Lee, 2010, 2011;. Some studies have assessed and identified areas with high subsidence risk.…”

Sensitivity analysis for the GIS-based mapping of the ground subsidence hazard near abandoned underground coal mines

“…Recently, ground subsidence hazards have been analyzed using results of geological and geotechnical investigations and probability, statistic, fuzzy algebra and artificial neural network models in tandem with geographic information system (GIS) application (Ambrožič and Turk 2003;Choi et al 2010;Kim et al 2006Kim et al , 2009Lee et al 2010;Oh and Lee 2010;Quanyuan et al 2009;Turer et al 2008). Some ground subsidence hazard assessments that include the identification of areas with a high subsidence risk have been published.…”

Geomorphological and Hydrological Effects of Subsidence and Land use Change in Industrial and Urban Areas

“…In the Son‐Mahanadi Master Coal Basin in western India, depressions ranging from 2 to 26 m have also been found (Singh, ). In the vicinity of Longkou city in the Shandong Province of China, areas that subsided by 3 to 5 m account for the greatest share of land, but a steady increase in the amount of land affected by mining has been observed (Quanyuan et al ., ). In 2004, subsidence affected slightly over 12 km 2 of land of which nearly 30% was in areas that had subsided by more than 5 m (Quanyuan et al ., ).…”

“…In the vicinity of Longkou city in the Shandong Province of China, areas that subsided by 3 to 5 m account for the greatest share of land, but a steady increase in the amount of land affected by mining has been observed (Quanyuan et al ., ). In 2004, subsidence affected slightly over 12 km 2 of land of which nearly 30% was in areas that had subsided by more than 5 m (Quanyuan et al ., ). A similar scale of subsidence due to mining is observed by Djamaluddin et al .…”