爆破地震波作用下尾矿坝的有限元动力分析
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摘要
为了了解某钼矿进行爆破采矿是否会对近距离的尾矿坝产生破坏作用,结合实际勘探资料,在二维静力非线性有限元分析的基础上,进行爆破地震波作用下坝体的动力反应分析,综合研究了动位移、动应力和加速度时程等关键物理量变化的规律性,并在此基础上进一步结合试验资料对坝体进行了液化判断及稳定性分析。分析结果表明,该钼矿在规定的爆心距、药量范围内进行爆破采矿时,相邻的尾矿坝是安全稳定的。本文的研究结果对爆破设计、现场采矿及尾矿坝体运行维护均具有一定的指导意义。
In order to show whether the blasting of the molybdenum mining will produce damaging effects on the nearby tailing dam.In this paper,combined with the actual exploration data and based on static nonlinear finite element analysis,the finite element dynamic response analysis of tailing dam under the action of blasting seismic waves is performed.The displacement distribution,stress distribution and accele-ration distribution under dynamic effect are obtained and their regularities are analyzed.Furthermore,the liquefaction and stability of the tailing dam are researched utilizing experimental data.The results show that the tailing dam under adjacent action of blast seismic is secure and stable within the limits compass of blasting distance and explosive mass.What is more,the results have certain significance for blasting design,on-site mining and operation and maintenance of tailing dam.
In order to show whether the blasting of the molybdenum mining will produce damaging effects on the nearby tailing dam.In this paper,combined with the actual exploration data and based on static nonlinear finite element analysis,the finite element dynamic response analysis of tailing dam under the action of blasting seismic waves is performed.The displacement distribution,stress distribution and accele-ration distribution under dynamic effect are obtained and their regularities are analyzed.Furthermore,the liquefaction and stability of the tailing dam are researched utilizing experimental data.The results show that the tailing dam under adjacent action of blast seismic is secure and stable within the limits compass of blasting distance and explosive mass.What is more,the results have certain significance for blasting design,on-site mining and operation and maintenance of tailing dam.
引文
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[10]AQ 2006-2005,尾矿库安全技术规程[S].
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[13]Ma G W,Hao H,Zhou Y X.Assessment of structuredamage to blasting induced ground motions[J].Engi-neering Structures,2000,22(10):1378-1389.
[14]钱胜国,陈玲玲,等.爆破地震工程结构动力分析[M].北京:中国水利水电出版社,2006.118.Qian S G,Chen L L,et al.Dynamic Analysis ofBlasting Earthquake Engineering[M].Beijing:ChinaWater Power Press,2006.118.
[15]Seed H B.Soil liquefaction and cyclic mobility evalua-tion for level during earthquakes[J].GeotechnicalEnglish Division,ASCE,1979,105(2):201-255.
[16]Seed H B,Idriss I M.Ground Motions and Soil Li-quefaction During Earthquakes[M].Berkeley AC:Earthquake Engineering Research Institue,1982.
[17]周维垣.高等岩石力学[M].北京:水利电力出版社,1993.Zhou W H.Advanced Rock Mechanics[M].Beijing:Water Conservancy and Electric Power Press,1993.
[18]ZBJ 1-90,选矿厂尾矿设施设计规范[S].
[2]潘建平.尾矿坝抗震设计方法及抗震措施研究[D].大连:大连理工大学,2007.Pan J P.Study on anti-seismic design method and an-ti-seismic measures of tailings dam[D].Dalian:Dalian University of Technology,2007.
[3]尹光志,魏作安,万玲,等.细粒尾矿堆坝加筋加固模型试验研究[J].岩石力学与工程学报,2005,24(6):1030-1034.Ying G Z,Wei Z A,Wan L,et al.Test study on sta-bility of fine grained tailings dam in geo-grid reinforce-ment situation[J].Chinese Journal of Rock Mechanicsand Engineering,2005,24(6):1030-1034.
[4]徐志英,沈珠江.尾矿高堆坝地震反应的综合分析与液化计算[J].水利学报,1983,(5):30-39.Xu Z Y,Shen Z J.Earthquake response and liquefac-tion analysis of high tailing dam by various methods[J].Journal of Hydraulic Engineering,1983,(5):30-39.
[5]李大东.中日尾矿坝抗震设计规范比较及相关问题研究[D].大连:大连理工大学,2006.Li D D.Comparison and research of correlated prob-lems on anti-seismic design criterion of tailing dam be-tween China and Japan[D].Dalian:Dalian Universityof Technology,2006.
[6]张超.尾矿动力特性及坝体稳定性分析[D].北京:中国科学院研究生院(武汉岩土力学研究所),2005.Zhang C.Dynamic properties of tailings and the sta-bility analysis of tailing dam[D].Beijing:GraduateUniversity of Chinese Academy of Sciences(WuhanInstitute of Rock and Soil Mechanics),2005.
[7]刘菀茹.尾矿动力特性及其堆坝稳定性分析[D].成都:四川大学,2006.Liu W R.Dynamic properties of tailings and the sta-bility analysis of tailing dam[D].Chengdu:SichuanUniversity,2006.
[8]刘浩元,王安民.爆破法固坝的震动及液化反应[J].工程爆破,1997,(3):65-70.Liu H Y,Wang A M.Liquefacient reaction and blas-ting shock in consolidation of a high-dangerous tailingdam[J].Engineering Blasting,1997,(3):65-70.
[9]Penman A D M.Tailing dams-some aspects of theirdesign and construction[J].International Journal ofRock Mechanics and Mining Sciences&Geomecha-nics,1995,32(3):131.
[10]AQ 2006-2005,尾矿库安全技术规程[S].
[11]徐志英,周健.本钢南芬尾矿坝三维有效应力动力分析[J].勘察科学技术,1990,(3):1-5.Xu Z Y,Zhou J.3D dynamic analysis of Nanfen tai-lings dam of Benxi iron and steel company[J].Site In-vestigation Science and Technology,1990,(3):1-5.
[12]王明洋,钱七虎.爆炸波作用下准饱和土的动力模型研究[J].岩土工程学报,1995,11(17-6):103-110.Wang M Y,Qian Q H.Study on dynamic model forquasi-saturated soil under explosive wave[J].ChineseJournal of Geotechnical Engineering,1995,11(17-6):103-110.
[13]Ma G W,Hao H,Zhou Y X.Assessment of structuredamage to blasting induced ground motions[J].Engi-neering Structures,2000,22(10):1378-1389.
[14]钱胜国,陈玲玲,等.爆破地震工程结构动力分析[M].北京:中国水利水电出版社,2006.118.Qian S G,Chen L L,et al.Dynamic Analysis ofBlasting Earthquake Engineering[M].Beijing:ChinaWater Power Press,2006.118.
[15]Seed H B.Soil liquefaction and cyclic mobility evalua-tion for level during earthquakes[J].GeotechnicalEnglish Division,ASCE,1979,105(2):201-255.
[16]Seed H B,Idriss I M.Ground Motions and Soil Li-quefaction During Earthquakes[M].Berkeley AC:Earthquake Engineering Research Institue,1982.
[17]周维垣.高等岩石力学[M].北京:水利电力出版社,1993.Zhou W H.Advanced Rock Mechanics[M].Beijing:Water Conservancy and Electric Power Press,1993.
[18]ZBJ 1-90,选矿厂尾矿设施设计规范[S].
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