During the development and construction of the Shenfu coalfield, generated were large tracts of disturbed land, and large volumes of overburden and waste slag, which, unique in soil composition, complex in underlying surface layer and significantly different from deserted land, have become a major source of serious man-made soil and water loss. An artificially simulated rainfall experiment was carried out to explore characteristics of the erosion on the huge dunes of disturbed soil, overburden and/or waste slag, and methods to predict its occurrence, with a tract of deserted land as CK. Detailed field investigations found that the dunes of overburden and waste slag ranged from 33° to 40° in natural angle of repose and the tracts of disturbed soil and deserted lands ranged from 4° to 18° in slope, so in the experiment 35° and 40° were set for dunes and 5°, 10°, and 18° for slope of land. Plots in the experiment field were laid out to be 3m x 1m, each, and each had two sections set up for monitoring of water flow. Rainfall intensity in the experiment was designed to vary from 1.5 ~ 3.0 mm min ^-1, forming four levels with an interval of 0.5 mm min ^-1 between every two levels. Before the experiment, the rainfall intensity was calibrated repeatedly until uniformity coefficient of the rainfalls reached 85% or higher. Soil particle compositions of the plots were determined with the pipette method. And then fractal dimension was figured out from soil particle composition to be 2.160, 2.164, 2.256, 2.379, and 2.566, respectively, for the dune of waste slag with less sand and more stone, the dune of waste slag with more sand and less stone, the dune of overburden, the tract of disturbed soil, and the tract of deserted land. Bulk density, porosity and moisture content of the soils were measured with the oven-drying method. During every rainfall, flow velocity was measured with the dye tracing method and width and depth of the flow with a thin steel rule. For the first 3 minutes of runoff, samples of runoff and sediment were gathered once a minute, and after that once every 3 minutes. Results show that (1) on the deserted land, erosion rate followed the process of declining-fluctuating-leveling off with the rainfall going on; on the land of disturbed soil, it did the process of rising-fluctuating-leveling off; on the dune of overburden 35° in slope, it rose to peak and then declined and gradually leveled off; on the dune, 40° in slope it fluctuated all the time; and on the dunes of waste slag of either texture it fluctuated drastically in the earlier runoff generation stage with occasional mud-rock flows and then leveled off about 15 min after runoff initiation. In general, in terms of erosion fluctuation, the five types of underlying followed an order of the dune of waste slag with less sand and more stone > the dune of waste slag with more sand and less stone > the dune of overburden > the tract of deserted > soil, and the tract of disturbed land; (2) erosion rate was closely related to rainfall intensity and underlying surface (p＜0.05), but slope was not so much related (p＞0.05). Complex soil composition is the main cause, making overburden and waste slag and disturbed soil different from deserted land. The erosion rate on the dune of slag with less sand and more stone, the dune of slag with more sand and less stone, the dune of overburden and the tract of disturbed soil was 6.51~14.25, 57.91~239.15, 43.60~180.13 and 2.27~3.06 times that on the tract of deserted land, respectively under rainfalls the same in intensity; and (3) erosion rates on the dunes of slag or overburden and the tract of disturbed soil could be predicted using the equation of power function of median soil particle size, fractal dimension, rainfall intensity, and slope and runoff parameters. The study demonstrates some important scientific significance to the establishment of soil erosion models and the construction of ecological environment for mining areas.