Abstract
Study on tailings dam over-topping failure model test and break mechanism under the rainfall condition
Highlights
The tailings pond is a dangerous source of man-made debris flow with high potential energy
Breach flushing flow increased with the reservoir water level decreasing in the early dam break, the time that the tailings dam break occurred was related to the upstream flow [17]
Based on the observation of dam-break model, the dam-break process is shown in the following Fig. 6, and the dam-break process is as follows: The seepage of the tailings and the water overflow occurred at the dam site during the rising of the water level
Summary
The tailings pond is a dangerous source of man-made debris flow with high potential energy. Seepage and migration of water is one of the most important factors which influence the stability of tailings dam [8]. Breach flushing flow increased with the reservoir water level decreasing in the early dam break, the time that the tailings dam break occurred was related to the upstream flow [17]. The higher the infiltration line, the higher the sliding displacement of the tailings dam, and the failure degree of the breach depends on the dam erosion [20]. The model test results of tailing dam failure cannot only make up the limitation of amount and reliability of dam break data analysis, and provide validation data for numerical. There is not much research about model test on the mechanism of the tailings dam break caused by rainfall. The research results will be of great significance for understanding the mechanism of dam failure and the early warning before tailings dam failure
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