某花岗岩露天矿排土场稳定性分析  

Analysis on Stability of Waste Dump in a Granite Open-pit Mine

作　　者：吴翔伟 余新洲 WU Xiangwei;YU Xinzhou(Changsha Institute of Mining Research Co.,Ltd.;State Key Laboratory of Safety Technology of Metal Mines)

机构地区：[1]长沙矿山研究院有限责任公司,湖南省长沙市410012 [2]金属矿山安全技术国家重点实验室

出　　处：《现代矿业》2022年第5期93-96,106,共5页Modern Mining

摘　　要：通过对广东省德庆县某花岗岩矿排土场安全稳定性研究,综合分析排土场场址、外部防护距离等安全因素,并采用极限平衡计算软件Slide分析了排土场的安全系数,确定了排土场边坡高度、边坡坡率等设计参数。结果表明,在边坡坡率为1∶1.6,综合边坡角度为23.81°时,自然工况下F;=1.276,降雨工况F;=1.257,在保证排土场边坡稳定的前提下,有效提高了排土场容积。Through the research on the safety and stability of a granite mine waste dump in Deqing County,Guangdong Province,the safety factors such as waste dump site,external protection distance are comprehensively analyzed. The safety factor of waste dump is analyzed by using the limit equilibrium calculation software slide,and the design parameters such as slope height and slope rate of waste dump are determined. The results show that when the slope ratio is 1∶1.6 and the comprehensive slope angle is 23.81°,Fsvalue is 1.276 under natural conditions and Fs value is 1.257 under rainfall conditions,the volume of waste dump is effectively improved on the premise of ensuring the stability of waste dump slope.

关 键 词：排土场 稳定性分析 安全系数 极限平衡分析法 

分 类 号：TD804[矿业工程—矿山开采]