尾矿库地震液化机理及抗震评估指标体系研究
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摘要
2008年"5.12"汶川大地震中,四川、陕西和甘肃三省尾矿库均受到不同程度的破坏和影响。本文针对四川汶川地震造成灾区尾矿库排洪系统失效,坝基沉降,坝体滑坡、垮塌、开裂等现状,对尾矿库地震溃坝机理进行了分析,研究了地震作用机理和地震液化的影响因素;在此基础上,建立起用于评估尾矿库抗震能力和地震溃坝可能性的指标体系,指标体系考虑了地震强度、防洪、抗滑、抗渗透和安全管理五个方面,能够较为全面的分析和评估尾矿库在抗震方面的基本特性,并通过研究给出了各个指标的分级方法。该体系的建立为尾矿库抗震能力评估、避免特殊工况下尾矿库溃坝事故的发生具有一定应用价值,可为尾矿库运行期的安全管理提供依据。
Tailings reservoirs of Sichuan,Shanxi and Gansu province were greatly influenced by Wenchuan earthquake on May 12th 2008.Aiming at tailings drainage system failure,foundation settlement,dam slide and collapse,cracks opening caused,by Wenchuan earthquake the tailings dam break mechanism by the earthquake was analyzed,tailings dam failure potential index system was established for the assessment of seismic capacity and earthquake,which included earthquake intensity,prevent flood ability,resist slide ability,prevent seepage and safety management etc.It will provide the prerequisite conditions for dam break studies,and provide a basis for safety management of the tailing reservoir during their operations.
Tailings reservoirs of Sichuan,Shanxi and Gansu province were greatly influenced by Wenchuan earthquake on May 12th 2008.Aiming at tailings drainage system failure,foundation settlement,dam slide and collapse,cracks opening caused,by Wenchuan earthquake the tailings dam break mechanism by the earthquake was analyzed,tailings dam failure potential index system was established for the assessment of seismic capacity and earthquake,which included earthquake intensity,prevent flood ability,resist slide ability,prevent seepage and safety management etc.It will provide the prerequisite conditions for dam break studies,and provide a basis for safety management of the tailing reservoir during their operations.
引文
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[8]郑欣,许开立,魏勇.尾矿坝溃坝致灾机理研究[J].中国安全生产科学技术,2008,4(5):8-12ZHENG Xin,XU Kai-li,WEI Yong.Study on the d isaster2causing mechanism of the tailings dam fa iling[J],Journal ofSafety Science and Technology,2008,4(5):8-12
[9]刘家喜,许开立.关于尾矿库危险性评价指标体系建立的探讨[A],2008(沈阳)国际安全科学与技术学术研讨会论文集[C],2008,468-472LIUJia-xi,XUKai-li.Discution on Iden Architecture of TailingsPond[A],Proceedings of 2008(Shenyang)International colloqui-um on Safety Science and Technology[C],2008,468-472
[10]李全明,王云海,张兴凯,等.尾矿库溃坝因素分析及风险指标体系研究[J].中国安全生产科学技术,2008,4(3):50-53LI Quan-ming,WANG Yun-hai,ZHANG Xing-kai,ec al.Anal-ysis of disastrous factors concerning tailing dam failing and re-search on risk index system[J].Journal of Safety Science andTechnology,2008,4(3):50-53
[11]杨家亮,叶明,李红印.地震危险性评价中余震活动的影响——以邢台余震区为例[J],华北地震科学,2006,24(2):46-48YANG Jia-liang,YE Ming,LI Hong-yin.The affection of after-shock activity in seismic risk evaluation-taking Xing tai aftershockarea as example[J],North China Earthquake Sciences,2006,24(2):46-48
[2]谢旭阳,田文旗,王云海,张兴凯.我国尾矿库安全现状分析及管理对策研究[J].中国安全生产科学技术,2009,5(2):6-9XIE Xu-yang,TIAN Wen-qi,WANG Yun-hai,ZHANG Xing-kai.The safety analysis of current situation and managementcounter measure on tailing reservoir in China[J],Journal of SafetytScience and Technology,2009,5(2):6-9
[3]张兴凯,王启明,相桂生.金属非金属尾矿库安全现状及分析[J].中国安全生产科学技术,2006,2(2):60-62ZHANG Xing-kai,WANG Qi-ming,XIANG Gui-sheng.The safe-ty analysis of current situation on metal and nonmetal mines[J],Journal of Safety Science and Technology,2006,2(2):60-62
[4]Seed HB,Idriss I M.Simplified procedure for evaluating soil liq-uefaction Potential[J].Soil Mech Found Div,ASCE,1971,97(SM9):1249-1273
[5]Ishihara.K Post-earthquake failure of a tailings dam due to lique-faction of the pond deposit.International conference on case histo-ries in geotechnical engineering[C],Stolouis,Geotechnical Engi-neering 1994,3:1129-1143
[6]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):75-76SHEN Lou-yan,LONG Qing-ji.Enlightenments of WenchuanEarthquake to Design and Management of Tailing Ponds[J],Non-ferrous Metals(Mine Section),2009,61(1):75-76
[7]郑欣,秦华礼,许开立.导致尾矿坝溃坝的因素分析[J].中国安全生产科学技术,2008,4(1):51-54ZHENG Xin,QIN Hua-li,XU Kai-li.Analysis of the factors in-ducing the tailing dam falling[J].Journal of Safety Science andTechnology,2008,4(1):51-54
[8]郑欣,许开立,魏勇.尾矿坝溃坝致灾机理研究[J].中国安全生产科学技术,2008,4(5):8-12ZHENG Xin,XU Kai-li,WEI Yong.Study on the d isaster2causing mechanism of the tailings dam fa iling[J],Journal ofSafety Science and Technology,2008,4(5):8-12
[9]刘家喜,许开立.关于尾矿库危险性评价指标体系建立的探讨[A],2008(沈阳)国际安全科学与技术学术研讨会论文集[C],2008,468-472LIUJia-xi,XUKai-li.Discution on Iden Architecture of TailingsPond[A],Proceedings of 2008(Shenyang)International colloqui-um on Safety Science and Technology[C],2008,468-472
[10]李全明,王云海,张兴凯,等.尾矿库溃坝因素分析及风险指标体系研究[J].中国安全生产科学技术,2008,4(3):50-53LI Quan-ming,WANG Yun-hai,ZHANG Xing-kai,ec al.Anal-ysis of disastrous factors concerning tailing dam failing and re-search on risk index system[J].Journal of Safety Science andTechnology,2008,4(3):50-53
[11]杨家亮,叶明,李红印.地震危险性评价中余震活动的影响——以邢台余震区为例[J],华北地震科学,2006,24(2):46-48YANG Jia-liang,YE Ming,LI Hong-yin.The affection of after-shock activity in seismic risk evaluation-taking Xing tai aftershockarea as example[J],North China Earthquake Sciences,2006,24(2):46-48
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