| 基于PFC2D的排土场边坡稳定性研究 |
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| 引用本文： | 贺超,崔松军,王亮,许永权,邹平,王飞飞.基于PFC2D的排土场边坡稳定性研究[J].矿冶工程,2021,41(4):15-18. |
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| 作者姓名： | 贺超 崔松军 王亮 许永权 邹平 王飞飞 |
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| 作者单位： | 1.北方矿业有限责任公司,北京 100053;
2.长沙矿山研究院有限责任公司,湖南 长沙 410012 |
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| 基金项目： | 国际与区域科技创新合作重点研发项目(2018WK2052) |
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| 摘 要： | 以刚果(金)卡莫亚铜钴矿1#排土场边坡为研究背景,采用离散元PFC2D数值分析软件建立了排土场边坡模型,并对排土场边坡5个不同剖面进行了稳定性数值模拟研究,得到了排土场边坡在自然状态和含水状态下的颗粒位移变化云图。结果表明,自然状态下,排土场边坡剖面1-1和2-2均为稳定状态; 剖面3-3、4-4和5-5稳定性较差,由于岩层关系,边坡容易顺着岩层发生滑坡。含水状态下,5个边坡剖面均为不稳定状态,且边坡强度较小,降水时易发生滑坡灾害。排土场整体破坏的滑面形状为近圆弧型,因此边坡滑动模式为“圆弧型滑动”。研究结果可为同类型排土场安全稳定性分析提供参考。
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| 关 键 词： | 滑坡 边坡工程 排土场 边坡稳定性 PFC2D |
| 收稿时间： | 2021-02-17 |
Slope Stability of Waste Dump Based on PFC2D |
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| HE Chao,CUI Song-jun,WANG Liang,XU Yong-quan,ZOU Ping,WANG Fei-fei.Slope Stability of Waste Dump Based on PFC2D[J].Mining and Metallurgical Engineering,2021,41(4):15-18. |
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| Authors: | HE Chao CUI Song-jun WANG Liang XU Yong-quan ZOU Ping WANG Fei-fei |
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| Affiliation: | 1.Norin Mining Co Ltd, Beijing 100053, China;
2.Changsha Institute of Mining Research Co Ltd, Changsha 410012, Hunan, China |
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| Abstract: | The slope of 1# waste dump of Copper Cobalt Mine in DR Congo was taken for the research and a model of waste dump slope was established with PFC2D. The slope stability of the waste dump was studied based on the numerical simulation for 5 different sections and a cloud chart of particle displacement variation was obtained for the slope of waste dump under natural state and water-bearing state. The results show that: under natural state, the sections 1-1 and 2-2 of the waste dump are stable, while the sections of 3-3, 4-4 and 5-5 show poor stability, and the slope is prone to a landslide along the stratum due to the factor of stratum; at water-bearing state, all 5 sections of the slope are unstable and a landslide is prone to occur during the rainfall due to low slope strength; the slip plane of the waste dump is nearly in a circular shape, thus it is a rotational slip. The results can provide a reference for the safety and stability analysis of the same type of waste dumps. |
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| Keywords: | landslide slope engineering waste dump slope stability PFC2D |
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