以安溪县铁峰山花岗岩矿区为例，以集水区为单元，选取具有代表性的矿点作为研究对象，采用调查分析法、标桩法和侵蚀沟体积量算转换法进行矿区水力岩土侵蚀的研究。结果表明：①花岗岩矿区由于其自身的特点，水力岩土侵蚀以溅蚀、面蚀、沟蚀等形式体现，其土壤侵蚀强度多达到强烈甚至极强烈以上。②由于矿渣的阻滞作用，降雨后土壤多呈泥浆状溅散。雨滴的溅蚀使得土壤多呈现鳞片状侵蚀，降雨过后部分地表土层产生板结。③从研究区面蚀和沟蚀情况看，水力岩土侵蚀多达到极强烈以上侵蚀，且受坡长、坡度、堆体颗粒组成、有无植被覆盖、堆倒年限等因素的综合影响。%Taking the Tiefeng Mountain Granite Mine of Anxi County as the example , it was selected the representa-tive mine site for study based on the catchment as the unit .The study was conducted on the hydraulic rock -soil ero-sion in the mine area in accordance with the methods of investigation , standard stake and measurement conversion of e-rosion gully volume, respectively.The results showed that 1) because of own characteristics , hydraulic rock-soil ero-sion appeared in the forms of sputtering , sheet erosion and gully erosion with the erosion strength reached strong or ex-treme strong;2) due to the retardation of the slag , soil after raining sprayed as muddy .The sputtering erosion of the rain drop made the soil appeared the scaled erosion , that some top soil layers were hardened after raining;3) from the sheet erosion and gully erosion status in the study area , it was found that the hydraulic rock -soil erosion reached ex-treme strength and affected by the factors of the slope length and degree , the particle composition , vegetation cover and mound collapse years, etc.
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