基于FLAC-3D的滑坡稳定性研究
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摘要
以山阳县某滑坡为研究对象,运用FLAC-3D数值模拟软件建立三维空间数值模型,分析该滑坡在天然工况和饱水工况下的位移场、应力场等分布规律。研究表明,在天然工况下,该滑坡处于基本稳定状态,不会出现瞬时失稳滑动;在饱水工况下,该滑坡处于失稳状态,容易出现瞬时失稳滑动。计算结果与现场实际勘察分析结果相吻合,说明所建立模型及参数取值是符合实际的。
Taking a landslide in Shan Yang County as the research object,using FLAC-3D to establish a three-dimensional numerical model,through the analysis of complex three-dimensional landslide displacement field,stress field,plastic zone distribution,combined with the landslide of the typical profile of stress,strain,landslide stability that in the natural state landslide is stable.The results show that in the natural state,the landslide is in a state of steady state and does not appear to fluctuate instantaneously.In the saturated state,the landslide is in a state of instability and prone to transient and unstable slip.The calculation results are also consistent with the spot geological surveys which prove the appropriateness of parameters choosing.
Taking a landslide in Shan Yang County as the research object,using FLAC-3D to establish a three-dimensional numerical model,through the analysis of complex three-dimensional landslide displacement field,stress field,plastic zone distribution,combined with the landslide of the typical profile of stress,strain,landslide stability that in the natural state landslide is stable.The results show that in the natural state,the landslide is in a state of steady state and does not appear to fluctuate instantaneously.In the saturated state,the landslide is in a state of instability and prone to transient and unstable slip.The calculation results are also consistent with the spot geological surveys which prove the appropriateness of parameters choosing.
引文
[1]宋民崇,余云燕,赵德安.FLAC软件在边坡稳定性分析中的应用[J].黑龙江工程学院学报,2009,12(4):24-27.
[2]郑宏,刘德富,罗先启.基于变形分析的边坡潜在滑面的确定[J].岩石力学与工程学报,2004,(23):709-716.
[3]曾亚武,田伟明.边坡稳定性分析的有限元法与极限平衡法的结合[J].岩石力学与工程学报,2005,24(S2):5355-5359.
[4]徐卫亚,周家文,邓俊晔,等.基于Dijkstra算法的边坡极限平衡有限元分析[J].岩土工程学报,2007,(29):1159-1172.
[5]张均锋,丁桦.边坡稳定性分析的三维极限平衡法及应用[J].岩石力学与工程学报,2005,24(3):365-370.
[6]HOEK E,BRAY J.Rock slope engineering[M].London:Institute of Mining and Metallurgy,1981.
[7]Boutrup E.and Lovell C.W..Seareh technique in slope stability analysis[J].Engrg.Geol.,Vol.1980,16(1):51-61.
[8]彭文斌.FLAC 3D实用教程.[M].北京:机械工业出版社,2008.
[9]陈育民,徐鼎平.FLAC/FLAC 3D基础与工程实例.[M].北京:中国水利水电出版社,2008:321-392.
[10]陈祖煜.土质边坡稳定分析的原理和方法[M].北京:中国水利水电科学研究所,2000:45-120.
[2]郑宏,刘德富,罗先启.基于变形分析的边坡潜在滑面的确定[J].岩石力学与工程学报,2004,(23):709-716.
[3]曾亚武,田伟明.边坡稳定性分析的有限元法与极限平衡法的结合[J].岩石力学与工程学报,2005,24(S2):5355-5359.
[4]徐卫亚,周家文,邓俊晔,等.基于Dijkstra算法的边坡极限平衡有限元分析[J].岩土工程学报,2007,(29):1159-1172.
[5]张均锋,丁桦.边坡稳定性分析的三维极限平衡法及应用[J].岩石力学与工程学报,2005,24(3):365-370.
[6]HOEK E,BRAY J.Rock slope engineering[M].London:Institute of Mining and Metallurgy,1981.
[7]Boutrup E.and Lovell C.W..Seareh technique in slope stability analysis[J].Engrg.Geol.,Vol.1980,16(1):51-61.
[8]彭文斌.FLAC 3D实用教程.[M].北京:机械工业出版社,2008.
[9]陈育民,徐鼎平.FLAC/FLAC 3D基础与工程实例.[M].北京:中国水利水电出版社,2008:321-392.
[10]陈祖煜.土质边坡稳定分析的原理和方法[M].北京:中国水利水电科学研究所,2000:45-120.