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。
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 PFC2 D.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.
作者
贺超
崔松军
王亮
许永权
邹平
王飞飞
HE Chao;CUI Song-jun;WANG Liang;XU Yong-quan;ZOU Ping;WANG Fei-fei(Norin Mining Co Ltd,Beijing 100053,China;Changsha Institute of Mining Research Co Ltd,Changsha 410012,Hunan,China)
出处
《矿冶工程》
CAS
CSCD
北大核心
2021年第4期15-18,共4页
Mining and Metallurgical Engineering
基金
国际与区域科技创新合作重点研发项目(2018WK2052)。
