摘要
为了研究尾矿堆场边坡的稳定性及灾害成因,以秦古镇三岔沟绿松石矿区的尾矿堆场边坡作为典型的尾矿边坡研究对象,分析该绿松石尾矿边坡特点及其灾害原因,并建立边坡失稳事故树,得到失稳因素的最小割集。基于极限平衡分析理论和SLIDE软件仿真建模,研究三岔沟山体和矿区尾矿堆场边坡的安全稳定性。依据边坡各级台阶的安全系数和不稳定边坡的位置,不仅可以确定失稳边坡的失效概率,也为采取合理的治理措施提供依据。经分析得到,秦古镇三岔沟绿松石矿区的四级台阶均存在不稳定滑面,尤其是第二、三级台阶的失效概率最大,应及时采取治理措施。
In order to study the stability of tailings yard slope and the causes of disasters, the tailings yard slope of Sanchagou turquoise mine in Qingu town was taken as a typical research object of tailings slope, the characteristics and causes of disasters of the tailings slope were analyzed, and the slope instability accident tree was established to obtain the minimum cut set of instability factors. Based on the limit equilibrium analysis theory and SLIDE software modeling, the safety and stability of Sanchagou mountain and mine tailings yard slope were studied. According to the safety coefficient of the slope steps and the location of the unstable slope, the failure probability of the unstable slope can be determined, and the basis can be provided for taking reasonable treatment measures. According to the analysis, unstable sliding surface exists in all the four steps of Sanchaogou turquoise mining area in Qingu town, especially the failure probability of the second and third steps is the largest, so treatment measures should be taken in time.
作者
刘嘉琪
倪晓阳
王天豪
刘鹏
LIU Jiaqi;NI Xiaoyang;WANG Tianhao;LIU Peng(Faculty of Engineering,China University of Geosciences,Wuhan Hubei 430074,China;CINF Engineering Co.,Ltd.,Changsha Hunan 410000,China)
出处
《安全》
2019年第3期40-44,共5页
Safety & Security
