摘要
为研究尾矿堆积坝不同标高的浸润线埋深对坝体的稳定性影响,建立指标满意度评价模型。以湖南某尾矿坝为例,设计4因素4水平的试验方案,即坝体4处不同标高处有4种不同的浸润线埋深。采用瑞典圆弧法进行坝体稳定性计算;选取坝体稳定性最小安全系数作为指标,进行基于指标满意度的敏感性分析。计算结果表明:尾矿堆积坝+207,+217,+227和+238 m标高处的浸润线埋深对坝体稳定性的敏感度分别为0.067,0.078,0.137和0.166,对应的最优浸润线埋深分别为3.8,5.1,7.9和11.1 m。标高越高位置的浸润线埋深对坝体的稳定性影响较大,该处浸润线埋深越浅,坝体越不稳定;标高越低位置的浸润线埋深对坝体稳定性的影响相对较小。
Taking a certain tailing dam in Human as an example, the effect of different saturation line depths in different elevation in the tailings stacking dam on its stability was studied. An evaluation model based on indicators of satisfaction was built. The dam＇s stability was calculated by Sweden arc calculation method, which contained four factors i.e. four elevations in tailings stacking dam. Each factors had four levels, i.e. four different saturation line depths. The sensitivity analysis was carried out with indicator selected, the minimum safety factors. The results show that sensitivities of elevations ＋207 m, ＋217 m, ＋ 227 m and ＋ 238 m in tailings stacking dam are 0.067, 0.078, 0. 137 and 0. 166 respectively, and optimal saturation line depth are 3.8 m, 5. 1 m, 7.9 m and 11. 1 m respectively. The saturation line depth in higher elevation in railings stacking dam is more sensitive and important to dam stability. The sat- uration line depth lower, the dam tends to be more unstable. The saturation line depth in lower elevation in tailings stacking dam has less effect on dam stability.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2013年第10期93-99,共7页
China Safety Science Journal
基金
"十二五"国家科技支撑计划项目(2012BAC09B02)
关键词
尾矿库
浸润线埋深
指标满意度
坝体稳定性
敏感性分析
railings pond
saturation line depth
index satisfaction degree
stability analysis
sensibility analysis
