Title: Effects of Subsidence Fracture Caused by Coal-mining on Soil Moisture Content in Semi-arid Windy Desert Area
Abstract: In order to explore effects of coal mining subsidence on water resources in soil,distribution characteristics of soil moisture in mining subsidence area were studied and the relationship between mining crack width,fracture density and soil water content was discussed. The study showed that mining subsidence cracks had resulted in a decline in soil moisture;soil moisture content in subsidence zones with cracks or without cracks was less than that in non-mining areas;and in general,soil moisture in subsidence fracture zone fracture-free zone non-mining areas. In addition,fracture density was negatively correlated with soil water content;prior to rainfall,it appeared that more the crack width,more the losses the amount of soil moisture,while after rainfall soil moisture loss in fracture zone was faster than that in non-fracture zone. In the short run,crack closure had little effect on the recovery of soil moisture and the recovery of soil moisture after subsidence would take a long time.
Publication Year: 2015
Publication Date: 2015-01-01
Language: en
Type: article
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Cited By Count: 10
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