Abstract: Abstract: It is a hot and difficult issue to study soil and water loss caused by current engineering accumulations in production and construction projects characterized by complex material composition and steep slope. This study experimentally investigated the erosion differences in engineering accumulations with three soil textures. Based on field survey, a laboratory experiment of engineering accumulation underlying surfaces, representing the Northern Shaanxi sand, Central Shaanxi Plain loam, and Jiangxi clay area, was conducted under simulated rainfall condition. Effects of rainfall intensity and gravels content on runoff and sediment yielding and erosion were investigated. The engineering accumulation plot was 5 m×1 m with a slope of 25°. Rainfall intensities were 1.0, 1.5, 2.0 and 2.5 mm/min and mass fractions of gravels were 0, 10%, 20% and 30%, respectively. Soil texture was clay, sand and loam. Runoff generation time, runoff velocity, runoff rate and erosion rate were determined. Each experiment was controlled within 45 min from the initiation of runoff to the end. Sediment concentration was calculated by traditional oven-drying method. Totally, 48 simulated rainfall events were examined in this study. Results showed that runoff generation was earlier in the loam and clay accumulations than in the sandy accumulation. Under the same experimental conditions, the averaged runoff velocity for the accumulations with gravels decreased from 8.3% to 27.3% in comparison with the pure accumulation, in the decreasing order of clay, loam and sandy accumulations. The averaged runoff velocity was significantly correlated with rainfall intensity for the 3 accumulations. Averaged runoff rate on the sandy accumulation was 20.7% and 18.8% lower than the loam and clay accumulations, respectively. The averaged runoff rate increased from 42.9% to 253.4% as rainfall intensity increased from 1.5 to 2.5 mm/min. Averaged runoff rate had a high correlation with rainfall intensity (P<0.01). The average erosion rate of the sandy accumulation was 3.0 times that of the loam accumulation and 2.3 times that of the clay accumulation. The averaged erosion rates for the 3 accumulations increased from 153.1% to 1219.9% while rainfall intensity increased from 1.0 to 2.5 mm/min. However, there was a significantly negative linear relationship between averaged erosion rate and gravel content (P<0.05). As rainfall intensity increased from 1.0 to 2.5 mm/min, runoff volume increased from 42.2% to 253.2% and erosion amount increased from 178.9% to 1589.1%. Averaged erosion amount of the sandy accumulation was 4.5 times that of the loam accumulation and 3.4 times that of the clay accumulation. For the 3 accumulations, erosion amount was significantly correlated with runoff volume and rainfall intensity. Results from our study may provide important data for establishing a model of soil and water loss from engineering accumulations in production and construction projects.