Hydraulic Erosion Rate of Reinforced Tailings: Laboratory Investigation and Prediction Model
Hydraulic Erosion Rate of Reinforced Tailings: Laboratory Investigation and Prediction Model
复制标题
DOI：
10.1155/2021/8764862
复制
发表时间：
2021-09
影响因子：
--
通讯作者：
Xuanyi Chen;X. Jing;Hai Cai;Yijun Wang;Luhua Ye
中科院分区：
文献类型：
--
作者：
Xuanyi Chen;X. Jing;Hai Cai;Yijun Wang;Luhua Ye
尾矿坝是为贮存各种尾矿而修建的高势能坝，水力侵蚀引起的漫顶破坏是最常见的破坏形式之一。采用自制的水力侵蚀试验装置，研究了加筋间距分别为2.5、1.7、1.3和1.0cm的尾矿的水力侵蚀特性。试验结果表明，加筋间距与尾矿冲刷速率呈正相关关系。基于泥沙冲刷理论，确定冲刷速率公式中的冲刷常数为0.056 mm/s，并将溃陷系数引入到加固尾矿溢流试验结果中，建立了加固尾矿水力冲刷速率的预测模型。该模型可为加固尾矿坝的漫顶冲刷破坏预测提供参考。
Tailings dams are high-potential-energy dams built to store various ore tailings, and the overtopping failure caused by hydraulic erosion is one of the most common failure modes. The characteristics of hydraulic erosion of the reinforced tailings were studied by using the self-made erosion apparatus with four kinds of reinforcement spacing 2.5, 1.7, 1.3, and 1.0 cm, respectively. The test results show a positive correlation between the reinforcement spacing and erosion rate of tailings. Based on the sediment scouring theory, the scouring constant in the erosion rate formula is determined to be 0.056 mm/s; a prediction model for the hydraulic erosion rate of reinforced tailings is established by introducing the collapse coefficient into the results of the overflow test of reinforced tailings. This model can provide a reference for the prediction of overtopping-induced erosion failure of the reinforced tailings dam.