开采沉陷对耕地土壤物理特性影响的空间变化规律

为了给煤矿沉陷耕地的复垦治理提供理论依据， 以兖州矿区为例， 对沉陷耕地不同下沉位置、不同土层的土壤进行了监测和分析， 揭示了开采沉陷对耕地土壤物理特性影响的空间变化规律． 结果表明， 开采沉陷显著影响耕地表层土壤的物理特性； 沉陷耕地上中坡土壤有砂质化的趋势， 而下坡和坡底则积聚了上中坡侵蚀下移的细颗粒土壤物质； 在土壤物理特性中， 受其影响最大的是土壤含水量， 其次是物理性砂粒含量， 再次是土壤容重和孔隙度．

Space variation law of physical characteristics about farmland soil due to mining subsidence

In order to supply the theory for harnessing subsided farmland from mining coal, taking Yanzhou mining area for example, the soils of various sites and their various layers about subsided farmland are determined and analysed, and the space variation law of the physical characteristics about farmland soil due to mining subsidence are revealed. The results indicate that the physical characteristics of the surface layer soil about subsided farmland are influenced remarkably by mining subsidence, the soils of the upper and middle parts are becoming sandy, and the substance of fine particles eroded from the upper and middle parts are accumulated in the lower and bottom parts.The biggest of the physical characteristics about farmland soil influenced by mining subsidence is the content of soil water, the second is the content of physical sandy particle, and the third is the soil volume weight and the soil hole degree.