基于连续理论和离散理论的碎屑流动力过程模拟分析

doi:10.13722/j.cnki.jrme.2017.0935

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摘要

为实现碎屑流灾害动力过程的模拟分析，采用连续理论方法和离散理论方法，对意大利Val Pola碎屑流的动力过程进行数值模拟。在连续理论方法中，采用HLLC近似Riemann解对有限体积数值离散控制体单元的界面通量进行计算求解。然后，将2种模拟方法的计算结果进行对比分析，分析结果表明：2种模拟方法的致灾范围、运动时间等计算结果均与实际灾害情况吻合良好，很好地再现了灾害发生的动力过程，验证了2种模拟方法的正确有效性；2种模拟方法的运动速度计算结果比较接近，可以为Val Pola碎屑流运动速度的研究提供有效参考；连续理论方法计算效率优于离散理论方法，而离散理论方法可以观察到局部地形对碎屑流运动过程的影响。

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	吴凤元1
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	樊赟赟3
	陈剑平2
	王庆贺1

关键词 ：数值模拟, 碎屑流, 连续理论方法, 离散理论方法, 动力过程

Abstract：

In order to realize the simulation of dynamic process of debris flow，the dynamic process of Val Pola debris flow in Italy was simulated using continuous theory method and discrete theory method. In the continuous theory method，the HLLC approximate Riemann solver has been used to calculate the interface flux of the control unit of the finite volume numerical discrete. Then，the results of two kinds of simulation methods were compared and analyzed. The simulation results show that the calculation results of the two kinds of simulation methods，such as disaster scope and motion time，are in good agreement with the actual disaster situation，and it is a good representation of the dynamic process of disaster，which verify the effectiveness of two kinds of simulation methods. The results of velocity of the two simulation methods are relatively close to each other，which can provide an effective reference for the research of the velocity of Val Pola debris flow. The computational efficiency of the continuous theory method is better than that of the discrete theory method，while the influence of local topography on debris flow can be observed using the discrete theory method.

Key words： numerical simulation debris flow continuum theory method discrete theory method dynamic process

引用本文:

吴凤元1，2，樊赟赟3，陈剑平2，王庆贺1. 基于连续理论和离散理论的碎屑流动力过程模拟分析[J]. 岩石力学与工程学报, 2018, 37(S2): 3998-4006.
WU Fengyuan1，2，FAN Yunyun3，CHEN Jianping2，WANG Qinghe1. Simulation analysis of dynamic process of debris flow based on continuum theory and discrete theory. , 2018, 37(S2): 3998-4006.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2017.0935 或 https://rockmech.whrsm.ac.cn/CN/Y2018/V37/IS2/3998

[1]	殷跃平，朱继良，杨胜元. 贵州关岭大寨高速远程滑坡——碎屑流研究[J]. 工程地质学报，2010，18(4)：445-454.(YIN Yueping，ZHU Jiliang，YANG Shengyuan. Investigation of a high speed and long run-out rockslide-debrisflow at Dazhaiin Guanling of Guizhou province[J]. Journal of Engineering Geology，2010，18(4)：445-454.(in Chinese))
[2]	殷跃平，刘传正，陈红旗，等.2013年1月11日云南镇雄赵家沟特大滑坡灾害研究[J]. 工程地质学报，2013，21(1)：6-15.(YIN Yueping，LIU Chuanzheng，CHEN Hongqi，et al.Investigation on catastrophic landslide of January11，2013 at Zhaojiagou，Zhenxiong county，Yunnan province[J]. Journal of Engineering Geology，2013，21(1)：6-15.(in Chinese))
[3]	SAVAGES B，HUTTERK. The motion of a finite mass of granular material down a rough incline[J].Journal of Fluid Mechanics，1989，199：177-215.
[4]	HUTTERK，SAVAGES B，NOHGUCHIY. Numerical， analytical， and laboratory experimental studies of granular avalanche flows[J].Annals of Glaciology，1989，13：109-116.
[5]	IVERSON R M，DENLINGER R P. Flow of variably fluidized granular masses across three-dimensional terrain：1. Coulomb mixture theory[J]. Journal of Geophysical Research：Earth Surface，2001，106(B1)：537-552.
[6]	DENLINGERR P，IVERSONR M. Flow of variably fluidized granular masses across three-dimensional terrain：2. Numerical predictionsand experimental tests[J].Journal of Geophysical Research：Earth Surface，2001，106(B1)：553-566.
[7]	HUNGRO. A model for the runout analysis of rapid flow slides，debris flows，and avalanches[J].Canadian Geotechnical Journal，1995，32(4)：610-623.
[8]	HUNGRO，MCDOUGALLS. Two numerical models for landslide dynamic analysis[J]. Computers andGeosciences，2009，35(5)：978-992.
[9]	PUDASAINIS P，HUTTERK. Rapid shear flows of dry granular masses down curved and twisted channels[J].Journal of Fluid Mechanics，2003，495：193-208.
[10]	MCDOUGALLS，HUNGRO. A model for the analysis of rapid landslide motion across three-dimensional terrain[J].CanadianGeotechnical Journal，2004，41(6)：1084-1097.
[11]	MCDOUGALLS，HUNGRO. Dynamic modelling of entrainment in rapid landslides[J].Canadian Geotechnical Journal，2005，42(5)： 1437-1448.
[12]	程谦恭，王玉峰，朱圻，等. 高速远程滑坡超前冲击气浪动力学机理[J]. 山地学报，2011，29(1)：70-80.(CHENG Qiangong，WANG Yufeng，ZHU Qi，et al.Dynamicsoftheairblastsgeneratedbyrockavalanches[J]. Journal of Mountain Science，2011，29(1)：70-80.(in Chinese))
[13]	朱圻，程谦恭，王玉峰，等. 高速远程滑坡超前冲击气浪三维动力学分析[J]. 岩土力学，2014，35(10)：2 909-2 926.(ZHU Qi，CHENG Qiangong，WANG Yufeng，et al.Three-dimensional modelling and dynamic analysis ofthe airblast generated by rock avalanche[J]. Rock and Soil Mechanics，2014，35(10)：2 909-2 926.(in Chinese))
[14]	樊赟赟，王恩志，王思敬. 碎屑流运动模拟及能量过程研究[J]. 东北大学学报：自然科学版，2011，32(9)：1 344-1 347.(FAN Yunyun，WANG Enzhi，WANG Sijing. Motion simulation of debris flow and research on energyprocess[J]. Journal of Northeastern University：Natural Science，2011，32(9)：1 344-1 347.(in Chinese))
[15]	孙新坡，何思明，刘恩龙，等. 基于SPH法的岩崩碎屑流与防护结构相互作用分析[J]. 山地学报，2016，34(3)：331-336.(SUN Xinpo，HE Siming，LIU Enlong，et al.Analysis of rockfall debris- obstacle interaction with SPH method[J]. Journal of Mountain Science，2016，34(3)：331-336.(in Chinese))
[16]	GIROLAMIL，HERGAULTV，VINAYG，et al. A three-dimensional discrete-grain model for the simulation of dam-break rectangular collapses：comparison between numerical results and experiments[J].Granular Matter，2012，14(3)：381-392.
[17]	张龙，唐辉明，熊承仁，等. 鸡尾山高速远程滑坡运动过程 PFC3D模拟[J]. 岩石力学与工程学报，2012，31(增1)：2 601-2 611. (ZHANG Long，TANG Huiming，XIONG Chengren，et al.Movementprocesssimulation ofhigh-speed long-distance Jiweishan landslide withPFC3D[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.1)：2 601-2 611.(in Chinese))
[18]	SHIRSATHS S，PADDINGJ T，KUIPERSJ A M，et al. Numerical investigation of monodisperse granular flow through an inclined rotating chute[J].American Institute of Chemical Engineers，2014，60(10)：3424-3441.
[19]	ALBABAA，LAMBERTS，NICOTF，et al. Relation between microstructure and loading applied by a granular flow to a rigid wall using DEM modeling[J].Granular Matter，2015，17(5)：603-616.
[20]	毕钰璋，付跃升，何思明，等. 牛眠沟地震滑坡碎屑化全过程离散元模拟[J]. 中国地质灾害与防治学报，2015，26(3)：17-25.(BI Yuzhang，FU Yuesheng，HE Siming，et al.Simulation of the whole process of Niumiangou creek rock avalanchetriggered by the earthquake using a distinct element method[J]. The Chinese Journal of Geological Hazard and Control，2015，26(3)：17-25.(in Chinese))
[21]	陈锣增. 易贡高速远程滑坡运动颗粒流数值分析[硕士学位论文][D]. 成都：西南交通大学，2016.(CHEN Luozeng. Three- dimensional numerical simulation of Yigong rock avalanche using particle flow code[M. S. Thesis][D].Chengdu：Southwest JiaotongUniversity，2016.(in Chinese))
[22]	Itasca Consulting Group Inc..PFC2Dparticle flow code in 2dimensions-optional features[R].Minneapolis，USA：[s. n.]：2005.
[23]	PIRULLIM， MANGENEYA. Results of back-analysis of the propagation of rock avalanches as a function of the assumed rheology[J].Rock Mechanics and Rock Engineering，2008，41(1)：59-84.
[24]	CROSTAG B，CHENH，LEEC F. Replay of the 1987 Val Pola landslide，Italian alps[J].Geomorphology，2004，60(1)：127-146.