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| Research and Appliance on Flood Regulation Calculation of Large Central-Line Damming Tailings Pond under Extreme Weather |
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Received:November 26, 2020
Revised:November 26, 2020
Accepted:December 11, 2020
Published Online:January 29, 2021
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| DOI： |
| KeyWord:extreme weather; flood regulation calculation; tailings pond; water balance method |
| Author | Institution |
| ZHOU Bing |
Dexing Copper Mine of Jiangxi Copper Co,Ltd |
| LIU Jinyong |
Dexing Copper Mine of Jiangxi Copper Co,Ltd |
| XIE Jianhui |
Dexing Copper Mine of Jiangxi Copper Co,Ltd |
| WANG Sha |
BGRIMM Technology group |
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| Abstract: |
| With the continuous expansion of mining scale and the gradual increase of ore treatment, the tailings pond, as the main structure for dressing tailings storage, has gradually become larger. However, due to the high accumulation dam, large catchment area and large tailing stock, these large tailings ponds are easy to cause overtopping and even dam breaking accidents in flood season, resulting in irreversible consequences. For this reason, carrying out flood control calculation for many times before flood season, analyzing dynamically and judging whether the current storage capacity meets the flood demand in flood season, and thus taking engineering measures when necessary, is an important countermeasure method to effectively prevent the overflow of flood in large central-line tailings pond. Based on the flood regulating requirements of large central-line tailings pond in extreme weather, 4# tailings pond in Dexing Copper Mine was used as a typical case, using the formula reasoning method and the water balance method, method for flood regulation calculation of tailings pond under extreme weather are studied, the changing process of the tailings pond water level when the flood hazard occurred in 5000 years is calculated, The discharge rate was obtained by empirical formula method and material model test method respectively. By comparing and analyzing the flood control results, a flood control technical system suitable for the large central-line damming tailings pond is established. The application results of 4# tailings pond in Dexing Copper Mine show that the research results can meet the dynamic flood control requirements of large central -line tailing ponds, and also provide useful reference for the effective flood control of large tailing ponds in extreme weather in China. |
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