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[1]WU Zhiyuan,PENG Suping,DU Wenfeng,et al.Effect of Coal Mining on Surface Soil Physicochemical Properties of Sandy Land in the Arid Region[J].Research of Soil and Water Conservation,2019,26(05):75-80.

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Effect of Coal Mining on Surface Soil Physicochemical Properties of Sandy Land in the Arid Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 05 Page number: 75-80 Column: Public date: 2019-09-06

Title:: Effect of Coal Mining on Surface Soil Physicochemical Properties of Sandy Land in the Arid Region

Author(s):: WU Zhiyuan^1,2, PENG Suping¹, DU Wenfeng¹, CUI Fan¹; 1. State Key Laboratory of Coal Resources and Safe mining, China University of mining and Technology, Beijing, 100083, China;
2. Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China

Keywords:: coal mining; physical and chemical properties of soil; subsidence basin; soil mechanical composition

CLC:: S151.9

DOI:: -

Abstract:: In order to study the influence of coal mining on the physical and chemical properties of surface soil in arid areas, the soil moisture content, soil organic matter content, soil density and soil mechanical composition of the mining area before, during and after coal mining were investigated. The results show that before the coal mining, the surface soil moisture content in the mining area is related to soil porosity, the correlation coefficient is 0.70, but the correlation is not significant, the surface soil moisture is basically independent of other soil physical properties; in the formation process of subsidence basin, the surface soil moisture in the mining area decreased by 1.22%~1.93% compared with that before mining, and the average reduction was 1.52%; the soil porosity increased significantly, the soil organic matter content decreased slightly, and the soil mechanical composition was basically no change. The soil moisture content of the surface has correlation with other soil physical and chemical properties to some extent, but the correlation is not significant. After the subsidence basin is stabilized, the surface soil moisture content in the central part of the subsidence basin gradually recovers and is even greater than that before coal mining. The surface soil moisture content at the edge of the subsidence basin has been decreasing. After the settlement is stabilized, the soil porosity increased compared with that before coal mining. The soil organic matter content is basically unchanged, the soil silt content significantly increases, the soil clay content decreases, and the surface soil moisture content is positively correlated with soil porosity.

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