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再筑坝过程中上部荷载对原有尾矿坝体的影响

Influence of Upper Loads on Original Tailings Dam in the Process of Dam Construction

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【作者】 吴艳霞; 于广明; 宋传旺; 潘永战; 李冉;

【Author】 Wu Yanxia,Yu Guangming,Song Chuanwang,Pan Yongzhan,Li Ran(Qingdao Technological University,Qingdao Shandong 266033,China)

【机构】 青岛理工大学土木工程学院;

【摘要】 尾矿坝稳定与否是尾矿库能否安全的关键所在,尾矿坝又是随着生产过程而不断加高的特殊岩土工程体,各种因素处于动态变化过程中,这使得尾矿坝工程的不确定性尤为明显,工程难度较其他类型的边坡工程有增无减。运用FLAC模拟某尾矿坝的筑坝施工过程,分析了再筑坝过程中,逐级加载时上部荷载对原有尾矿坝体安全性能的影响,考虑了由下至上逐步形成重力荷载,最后叠加得到的便是最终内力和变形。为尾矿坝工程建设提供可参考的依据,减少溃坝事故的发生。

【Abstract】 The stability of tailings dam is important to the safety of tailings pond.The tailings dam is a kind of particular geotechnical engineering body,which gets higher and higher with the course of construction and many factors are varying all the time,so the tailings dam is in a more dynamic situation,and the difficulty of building tailings dam is far larger than other kinds of slope engineering projects.This article modifies a process of building dams with the software-FLAC,analyzing the influence of load addition on the dam body that has been built.And the course of forming the gravity load is considered from the bottom step by step,superposition of all elements to get the ultimate force and deformation.So the article can provide a referential basis for building tailings dam,and decrease the possibility of tailings dam failure.

【关键词】 尾矿坝; 再筑坝; 上部荷载; 安全性; 溃坝;
【Key words】 tailings dam; rebuilding dam; upper loads; security; dam failure;
【基金】 国家自然科学基金(50874064,50804026,50904039);教育部博士点基金项目(200804290002);山东省科技攻关项目(G2010F10)
  • 【文献出处】 地下空间与工程学报 ,Chinese Journal of Underground Space and Engineering , 编辑部邮箱 ,2011年S2期
  • 【分类号】TV649
  • 【被引频次】3
  • 【下载频次】93
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