论文部分内容阅读
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。
In order to study the influence of buried depth of saturation line with different elevation of tailing pile on stability of dam, an evaluation model of index satisfaction is established. Taking a tailings dam in Hunan Province as an example, a 4-level 4-level test scheme is designed, that is, there are 4 different depths of immersion lines at four different elevations in the dam body. The Swedish arc method is used to calculate the stability of the dam. The minimum safety factor of stability of the dam is chosen as the index to conduct the sensitivity analysis based on the index satisfaction. The calculated results show that the sensitivities of buried depths at the 207, +217, +227 and +238 m elevation of tailing dam to the dam stability are 0.067, 0.078, 0.137 and 0.166, respectively. The corresponding optimal infiltration The line depths were 3.8, 5.1, 7.9 and 11.1 m respectively. The depth of wetting line at the higher elevation has a greater influence on the stability of the dam. The shallower the depth of the wetting line, the more unstable the dam. The lower the elevation, the deeper the depth of embankment affects the stability of the dam Relatively small.