楚王陵古地下工程稳定性的数值模拟分析
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摘要
古代地下工程闪烁着人类智慧的光芒。以徐州市楚王陵建立三维模型为例,采用大型通用数值分析软件ANSYS,研究古代地下工程的稳定性。在分析中考虑了地表地形、地面建筑和岩石风化等三因素对该工程稳定性的影响。分析表明,岩石风化作用明显影响古墓稳定性,地面建筑使得其原有变形加剧,地表地形的起伏在局部增加了岩石应力。三者对其薄弱部位影响较大,特别是在墓室入口的上下端角,应力集中较大,最容易发生围岩破坏。对古地下工程的保护和维护,应着重考虑到这些因素的影响。
Ancient underground engineering is an illustration of human intelligence.The Chuwang tomb in Xuzhou City is taken for example to set up a three-dimensional model.A lurge-scale general-purpose finite element analytical software ANSYS is adopted to study the stability of ancient underground work.Three factors are considered as terrain,surfac structure and rock decay and their influence on the stability of the tomb.Analysis shows that the rock decay affects the stability of tomb apparently,the surfac structure aggravates inherent deformation and terrain in- creases rock stress locally.These three factors have relatively large influence on the weak points,especially at the top and bottom corner of repository entry.At these points the surrounding rock damage can occur easily because the stress concentration is larger.When protecting and preserving towards ancient underground engineering,the influence of these factors should be taken into account.
Ancient underground engineering is an illustration of human intelligence.The Chuwang tomb in Xuzhou City is taken for example to set up a three-dimensional model.A lurge-scale general-purpose finite element analytical software ANSYS is adopted to study the stability of ancient underground work.Three factors are considered as terrain,surfac structure and rock decay and their influence on the stability of the tomb.Analysis shows that the rock decay affects the stability of tomb apparently,the surfac structure aggravates inherent deformation and terrain in- creases rock stress locally.These three factors have relatively large influence on the weak points,especially at the top and bottom corner of repository entry.At these points the surrounding rock damage can occur easily because the stress concentration is larger.When protecting and preserving towards ancient underground engineering,the influence of these factors should be taken into account.
引文
[1]杨志法，李丽慧，潘炜，陆民，郑舰．关于大型古地下工程若干问题的讨论[J]．科学技术与工程，2003 (3)：462-464．(YANG Zhifa,LI Lihui,PAN Wei,LU Ming,ZHENG Jian.Discussions about large-scale ancient underground engineerings[J].Science technolo- gy and engineering,2003(3):462-464.(in Chinese))
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[3]段艳燕，宋宏伟，赵坚，刘刚．岩体非连续结构面对隧道稳定性影响的数值分析[J]．岩土工程界，2004，7 (9):34-39.(DUAN Yanyan,SONG Hongwei,ZHAO Jian,LIU Gang.Numerical simulation of the rock mass discrete discontinuity affecting the stability of tunnel [J].GeotechnicalEngineering World,2004,7 (9):34- 39.(in Chinese))
[4]宋宏伟，贾颖绚，段艳燕．开挖中的围岩破裂性质与支护对象研究[J]．中国矿业大学学报，2006(2)：192 -196.(SONG Hongwei,JIA Yingxuan,DUAN Yanyan. Study on characteristics of the rock broken by excavation and roof supporting object[J].Journal of China Univer- sity of Mining & Technology,2006(2):192-196.(in Chinese))
[5]SONG Hongwei,ZHAO Jian,WANG Chuang,LIANG Xiaodan (2003).Study on concept and characteristics of stress rock arch around a cavern underground,《Preced- dings of Underground Singapore 2003 and Workshop“Updating the engineering geology of Singapore”》,Sin- gapore,27-29 November 2003,pp44-51.
[6]许传华，任青文，李瑞．地下工程围岩稳定性分析方法研究进展[J]．金属矿山，2003(2)：34-37．(XU Chuanhua,BEN Qingwen,LI Bui.Advances in researc- hing the stability analysis methods of the surrounding rock mass in underground engineering[J].Metal Mine, 2003(2):34-37.(in Chinese))
[7]王思敬，杨志法，等．地下工程岩体稳定分析[M]．北京：科学出版社，2000(3)：584-589．(WANG Si- jing,YANG Zhifa,et al.Stability analysis for the rock mass of underground engineering [M].Beijing:Science press,2000(3):584-589.(in Chinese))
[8]任青文．岩体破坏分析方法的研究进展[J]．岩石力学与工程学报，2001，20(增2)：1303-1309．(REN Qingwen.Advances in Researching rock mass destruc- tion analysis method [J].Chinese Journal of Rock Me- chanics and Engineering,2001,20:1303-1309.(in Chinese))
[9]陆小敏，任青文．基于有限元和块体元的地下硐室变形及稳定性分析[J]．工程力学，2001(4)：60-66．(LU Xiaomin,BEN Qingwen.Rock excavations deforma- tion and stability analysis based on finite element and block element[J].Engineering Mechanics,2001 (4): 60-66.(in Chinese))
[10]李世煇，宋军．变形速率比值判据与猫山隧道工程验证[J]．中国工程科学，2002(6)：85-91．(LI Shi- hui,SONG Jun.Deformation rate ratio criterion (DRRC)and its verification in Maoshan tunnel excava- tion[J].Engineering Science,2002(6):85-91.(in Chinese))
[2]杨志法，王思敬，等．龙游石窟工程地质力学中的应用[R]．中国科学院地质研究所工程地质力学开放实验室1992年年报，北京：地震出版社，1993．(YANG Zhifa.Application of system science to engi- neering geomechanics[R].Institute of Geology,Chi- nese Academy of Sciences,Engineering geomechanics open laboratory year-book 1992,Beijing:Earthquake Press,1993.(in Chinese))
[3]段艳燕，宋宏伟，赵坚，刘刚．岩体非连续结构面对隧道稳定性影响的数值分析[J]．岩土工程界，2004，7 (9):34-39.(DUAN Yanyan,SONG Hongwei,ZHAO Jian,LIU Gang.Numerical simulation of the rock mass discrete discontinuity affecting the stability of tunnel [J].GeotechnicalEngineering World,2004,7 (9):34- 39.(in Chinese))
[4]宋宏伟，贾颖绚，段艳燕．开挖中的围岩破裂性质与支护对象研究[J]．中国矿业大学学报，2006(2)：192 -196.(SONG Hongwei,JIA Yingxuan,DUAN Yanyan. Study on characteristics of the rock broken by excavation and roof supporting object[J].Journal of China Univer- sity of Mining & Technology,2006(2):192-196.(in Chinese))
[5]SONG Hongwei,ZHAO Jian,WANG Chuang,LIANG Xiaodan (2003).Study on concept and characteristics of stress rock arch around a cavern underground,《Preced- dings of Underground Singapore 2003 and Workshop“Updating the engineering geology of Singapore”》,Sin- gapore,27-29 November 2003,pp44-51.
[6]许传华，任青文，李瑞．地下工程围岩稳定性分析方法研究进展[J]．金属矿山，2003(2)：34-37．(XU Chuanhua,BEN Qingwen,LI Bui.Advances in researc- hing the stability analysis methods of the surrounding rock mass in underground engineering[J].Metal Mine, 2003(2):34-37.(in Chinese))
[7]王思敬，杨志法，等．地下工程岩体稳定分析[M]．北京：科学出版社，2000(3)：584-589．(WANG Si- jing,YANG Zhifa,et al.Stability analysis for the rock mass of underground engineering [M].Beijing:Science press,2000(3):584-589.(in Chinese))
[8]任青文．岩体破坏分析方法的研究进展[J]．岩石力学与工程学报，2001，20(增2)：1303-1309．(REN Qingwen.Advances in Researching rock mass destruc- tion analysis method [J].Chinese Journal of Rock Me- chanics and Engineering,2001,20:1303-1309.(in Chinese))
[9]陆小敏，任青文．基于有限元和块体元的地下硐室变形及稳定性分析[J]．工程力学，2001(4)：60-66．(LU Xiaomin,BEN Qingwen.Rock excavations deforma- tion and stability analysis based on finite element and block element[J].Engineering Mechanics,2001 (4): 60-66.(in Chinese))
[10]李世煇，宋军．变形速率比值判据与猫山隧道工程验证[J]．中国工程科学，2002(6)：85-91．(LI Shi- hui,SONG Jun.Deformation rate ratio criterion (DRRC)and its verification in Maoshan tunnel excava- tion[J].Engineering Science,2002(6):85-91.(in Chinese))
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