| 尾矿库筑坝期三维渗流分析 |
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| 引用本文： | 姜 雪,梁秀娟,肖长来,闫佰忠.尾矿库筑坝期三维渗流分析[J].吉林大学学报(地球科学版),2014,44(2):619-625. |
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| 作者姓名： | 姜 雪 梁秀娟 肖长来 闫佰忠 |
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| 作者单位： | 吉林大学环境与资源学院，长春130021 |
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| 基金项目： | 国家自然科学基金项目(41172205);吉林省科技重点攻关项目(20100452) |
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| 摘 要： | 尾矿库坝体的稳定性分析需充分考虑地形的复杂程度与边界的不规则程度，从而建立尾矿库的真实三维渗流场。利用SVOffice软件在不概化地形及边界的条件下构建尾矿库的真实渗流域，模拟了最后一期填筑在正常高水位（427.77 m）及汛期最高洪水位（434.50 m）两种工况下的三维瞬态渗流场。结果显示：两种工况下，尾矿最大日排水量均为6 100 m3，此时，堆积坝两侧浸润面均有溢出，远离排水井一侧的溢出范围更大，这主要是受渗流域的影响；库内初始水位对筑坝期渗流场的分布存在较大的影响，汛期洪水位筑坝初期浸润面位置最高。由模拟结果设计了5条排渗盲沟，保证了浸润面在堆积坝任何部位均未溢出。
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| 关 键 词： | 尾矿库 三维渗流 渗流域 填筑 浸润面 排渗盲沟 |
| 收稿时间： | 2013-09-25 |
Three-Dimensional Seepage Analysis of Tailings Damming Period |
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| Jiang Xue,Liang Xiujuan,Xiao Changlai,Yan Baizhong.Three-Dimensional Seepage Analysis of Tailings Damming Period[J].Journal of Jilin Unviersity:Earth Science Edition,2014,44(2):619-625. |
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| Authors: | Jiang Xue Liang Xiujuan Xiao Changlai Yan Baizhong |
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| Institution: | College of Environment and Resources, Jilin University, Changchun130021, China |
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| Abstract: | The complexity degree of the terrain and irregular degree of the border need to be fully considered in stability analysis of tailings dam. Thereby we established the true 3D seepage field of the tailings. Real seepage basin of the tailings was built by using SVOffice software without generalizing terrain and boundary conditions, and the three-dimensional transient seepage fields of the last stage filling was simulated under the normal water level (427.77 m)and flood peak(434.50 m). The results show, under two different conditions, the maximum drainage amount are both 6 100 m3/d. At the same time, the infiltration surface escapes on both sides of stacking dam, and the escape range is larger on the side far away from the drainage well, which is mainly affected by the seepage basin. Initial level of the tailing has a great impact on the seepage field of damming and the infiltration surface is the highest at the beginning of damming under flood peak. According to the simulation results, five blind drainage ditches are designed, which ensures that the infiltration surface will not escape on any position of stacking dam. |
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| Keywords: | tailings three-dimensional seepage seepage basin damming phreatic surface blind drainage ditch |
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