尾矿坝液化流滑破坏模型与稳定措施研究
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摘要
上游法尾矿坝浸润线较高,大部分坝体处于饱和状态,地震作用下易发生液化流滑破坏。通过分析尾矿坝地震灾害,初步研究了尾矿坝流滑破坏机理,从基础破坏、初期坝破坏、子坝破坏和内滑破坏方面提出了4种流滑破坏模型,探讨了针对尾矿坝流滑破坏的稳定措施及其加固效果。研究成果对指导尾矿坝抗震设计、提高矿山安全管理水平及降低灾害损失具有重要意义。
The phreatic line is higher at upstream-type tailings dam and most of dams are in saturated state,thus easily leading to flow slide destruction under earthquake.Though analyzing the earthquake disasters of tailings dam,the mechanism of flow slide destroy induced by seismic liquefaction are studied,and the four flow slide destroy models are proposed from aspects of base destroy,initial dam destroy,sub-dam destroy and inside flow destroy.Then the stabilizing measures for liquefaction flow slide of tailings dam and their consolidated effect are discussed.It plays a significant role in guiding the anti-seismic design of tailings dam,improving the level of safety management and reducing the disaster loss.
The phreatic line is higher at upstream-type tailings dam and most of dams are in saturated state,thus easily leading to flow slide destruction under earthquake.Though analyzing the earthquake disasters of tailings dam,the mechanism of flow slide destroy induced by seismic liquefaction are studied,and the four flow slide destroy models are proposed from aspects of base destroy,initial dam destroy,sub-dam destroy and inside flow destroy.Then the stabilizing measures for liquefaction flow slide of tailings dam and their consolidated effect are discussed.It plays a significant role in guiding the anti-seismic design of tailings dam,improving the level of safety management and reducing the disaster loss.
引文
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[6]刘汉龙,周云东,高玉峰.砂土地震液化后大变形特性试验研究[J].岩土工程学报,2002,24(2):142-146.
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[13]潘建平.尾矿坝地震反应分析及抗震措施研究[J].矿冶工程,2009,29(5):5-8.
[14]潘建平.地震作用下尾矿坝稳定及加筋效果分析[J].金属矿山,2009(3):19-23.
[2]Harper T,Mcleod H,DaviesM.Seismicassessmentoftailingsdams[J].Civil Engineering,1992(12):64-66.
[3]王余庆,王治平,辛鸿博,等.中国尾矿坝地震安全度(1)——大石河尾矿坝1976年唐山大地震震害及有关强震观测记录[J].工业建筑,1994(7):38-42.
[4]沈楼燕,龙卿吉.汶川地震对尾矿库设计与管理的启示[J].有色金属:矿山部分,2009,61(1):75-76.
[5]CCTV.抓坚加固被地震破坏的尾矿库[EB/OL].2008-06-10[2011-1-30].http:∥news.qq.com/a/20080610/003091.htm.
[6]刘汉龙,周云东,高玉峰.砂土地震液化后大变形特性试验研究[J].岩土工程学报,2002,24(2):142-146.
[7]张建民,王刚.砂土液化后大变形的机理[J].岩土工程学报,2006,28(7):835-840.
[8]陈文华.液化流滑变形模型及初步实验[J].自然灾害学报,2004,13(3):75-80.
[9]潘建平,孔宪京,邹德高.尾矿坝地震液化稳定的简化分析[J].水利学报,2006,37(10):1224-1229.
[10]冶金工业部.GB 50191—93构筑物抗震设计规范[S].北京:中国计划出版社,1994.
[11]《中国有色金属尾矿库概论》编辑委员会.中国有色金属尾矿库概论[M].北京:中国有色金属工业总公司,1992.
[12]孔宪京,潘建平,邹德高.尾矿坝液化流动变形分析[J].大连理工大学学报,2008,48(4):541-545.
[13]潘建平.尾矿坝地震反应分析及抗震措施研究[J].矿冶工程,2009,29(5):5-8.
[14]潘建平.地震作用下尾矿坝稳定及加筋效果分析[J].金属矿山,2009(3):19-23.
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