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[1]XIE Yuan-gui,CHE Jia-xiang,PENG Xi.Comparison Study of Mining Subsidence Years on Soil Physical Properties of in Mining Area[J].Research of Soil and Water Conservation,2012,19(04):26-29.

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Comparison Study of Mining Subsidence Years on Soil Physical Properties of in Mining Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 04 Page number: 26-29 Column: Public date: 2012-08-20

Title:: Comparison Study of Mining Subsidence Years on Soil Physical Properties of in Mining Area

Author(s):: XIE Yuan-gui¹, CHE Jia-xiang¹, PENG Xi²; 1. Research Center of Guizhou Karst Environment and Resource Development, Guiyang 550001, China;
2. Observation Station for Soil and Water Conservation of Guizhou Province, Guiyang 550002, China

Keywords:: mining area; mining subsidence; soil physical properties

CLC:: S152

DOI:: -

Abstract:: In order to reveal the mechanism of how subsidence put influence on the physical properties of soil in mining area and provide the theoretical basis for the ecological restoration and reconstruction of those areas, the physical changes of typical soil sample plots from different subsidence time and soil layers were studied. The results showed: the soil density gradually increased in surface layers but it increased and then decreased in the bottom layers with the extension of mining subsidence, while capillary porosity gradually increased and non-capillary porosity decreased first and then increased; the total porosity gradually decreased in surface soil, but firstly it decreased then increased in the bottom, while the volumetric content and storage capacity of water increased and then decreased as the mass content just gradually decreased; it gradually decreased in surface soil while it firstly decreased and then increased in the bottom in terms of the moisture capacity; on the surface, the field water-holding capacity gradually decreased and it firstly decreased and then increased in the bottom, while soil discharge ability firstly decreased and then increased.

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