关键词: 水电站, 弃渣场, 坡位, 土壤物理性质

Abstract: [Objective] The objective of this study was to study on different parts of the terrain under different soil physical properties of spoil fidle,then to provide a theoretical basis to spoil site hydropower projects in similar areas of land reclamation and ecological reconstruction.[Method] 2# sideslops of excavation waste dump in Jin'anqiao Hydropower Station were selected as object to observe different slope positions,platforms,as well as native vegetation zone of soil physical properties.[Results] The results showed that:① Soil moisture content is highest in native vegetation areas.Different slope positions of the size of the soil moisture content expressed as platform > middle slope > upper slope > lower slope,and exhibited lower soil moisture content is higher than the surface soil moisture;② In the partical size composition,size of the particles (>4 mm) in terms of particle size composition in the upper slope is the highest,followed by platform > middle slope > lower slope,2# residue field surface residue is coarse,and the lower slag particle size is smaller than surface soil;③ Soil bulk density and soil porosity showed a significant correlation,slope position soil bulk density of 1.62-1.92 g/cm³,upper slope's soil bulk density and soil porosity is the lowest and largest.[Conclusion] The various parts of the 2# sideslops of excavation waste dump of soil physical properties is bader than the corresponding native vegetation areas,is not conducive to the natural recovery of vegetation.

Key words: hydropower station, abandoned dregs, slope position, soil physical properties