基于有限体积法的滑坡–碎屑流三维运动过程模拟分析

doi:10.13722/j.cnki.jrme.2015.03.005

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Abstract Because of super mobility，high velocity and enormous energy，the landslide-debris flow is a kind of geological disaster with extreme destructive power. In order to simulate three-dimensional movement of landslide-debris flow，a simulation model considering the erosion effect and the change of friction resistance at the bottom of landslide was established in the paper based on the local Lagrange coordinate system and the finite volume method. The simulation model was validated with the example of El Picacho landslide using the parameters of distance erosion rate and Voellmy model. The results of simulation showed that the runout path and distance agreed with the field data of measurement，which indicated the effectiveness of the proposed model. Besides，the simulation without erosion effect was carried out. It is indicated that the total volume of sliding mass was decreased and the runout distance was shortened，which indicating that the erosion effect at the bottom of landslide was an important factor for the movement of landslide-debris flow.

Key words： slope engineering landslide-debris flow three-dimensional movement process numerical simulation finite volume method

Received: 25 February 2014

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.03.005 OR http://www.rockmech.org/EN/Y2015/V34/I03/480

[1]	HEIM A. Landslide and human lives[M]. Vancouver：Bitech Press，1989：57-79. " target="_blank">
[3]	COROMINAS J. The angle of reach as a obility index for small and large landslide[J]. Canadian Geotechnical Journal，1996，33(2)：260-271. " target="_blank">
[5]	王思敬，王效宁. 大型高速滑坡的能量分析及其灾害预测[C]// 滑坡论文集. 成都：四川科技出版社，1989：117-124.(WANG Sijing，WANG Xiaoning. Energy analysis and hazard prediction of high speed landslides[C]// Landslide Symposium. Chengdu：Sichuan Science and Technology Press，1989：117-124.(in Chinese)) " target="_blank">
[7]	MCLELLAN P J，KAISER P K. Application of two-parameter model to rock avalanches of the Mackenzie mountains[C]// Proceedings of the 4th International Symposium on Landslide. [S. l.]：[s. n.]，1984：135-140. " target="_blank">
[8]	CUNDALL P A，STRACK O D L. A discrete numerical model for granular assemblies[J]. Geotechnique，1979，29(1)：47-65. " target="_blank">
[10]	EGASHIRA S，HONDAB N，ITOHC T. Experimental study on the entrainment of bed material into debris flow[C]// Physics and Chemistry of the Earth，Part C：Solar，Terrestrial and Planetary Science. [S. l.]：[s. n.]，2001：645-650. " target="_blank">
[12]	HUNGR O，EVANS S G. Rock avalanche runout prediction using a dynamic model[C]// Senneset，Landslides. Rotterdam：Balkema，1996：233-238. " target="_blank">
[14]	HUNGR O. Numerical modelling of the motion of rapid，flow- like landslides for hazard assessment[J]. Journal of Civil Engineering，2009，13(4)：281-287. " target="_blank">
[16]	BELL N，YU Y Z，MUCHA P J. Particle-based simulation of granular materials[C]// Computer Animation. Los Angeles，CA：[s. n.]，2005：29-31. " target="_blank">
[18]	MCDOUGALL S，HUNGR O. Dynamic modelling of entrainment in rapid landslides[J]. Canadian Geotechnical Journal，2005，42(5)：1 437-1 488. " target="_blank">
[20]	BAGNOLD R A. Experiments on the gravity -free dispersion of large spheres in a Newton fluid shear[C]// Proceedings of Royal Society of Londen. [S. l.]：[s. n.]，1954：49-63. " target="_blank">
[4]	王念秦，张倬元. 一种典型黄土滑坡的滑距预测方法[J]. 西北大学学报，2003，33(1)：111-114.(WANG Nianqin，ZHANG Zhuoyuan. Forecasting method of sliding distance on typical loess landslides[J]. Journal of Northwest University，2003，33(1)：111-114.(in Chinese))
[21]	CEPEDA J，CHÁVEZ J A，MARTÍNEZ C C. Procedure for the selection of runout model parameters from landslide back-analyses：application to the Metropolitan Area of San Salvador， El Salvador[J]. Landslides，2010，7(2)：105-116.
[2]	SCHEIDEGGER A E. On the prediction of the reach and velocity of catastrophic landslides[J]. Rock Mechanics，1973，5(4)：231-236. " target="_blank">
[6]	FANNIN R J，WISE M P. A method for calculation of debris flow travel distance[C]// Proceedings of the 48th Canadian Geotechnical Conference. [S. l.]：[s. n.]，1996：643-650. " target="_blank">
[9]	刘忠玉，马崇武，苗天德，等. 高速滑坡远程预测的块体运动模型[J]. 岩石力学与工程学报，2000，19(6)：742-746.(LIU Zhongyu，MA Chongwu，MIAO Tiande，et al. Kinematic blockmodel of Longrun-out prediction for high speed landslides[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(6)：742-746.(in Chinese))
[11]	MANZELLA I，LABIOUSE V. Qualitative analysis of rock avalanches propagation by means of physical modelling of non-constrained gravel flows[J]. Rock Mechanics and Rock Engineering，2008，41(1)：133-151.
[13]	SCHNEIDER D. On characteristics and flow dynamics of large rapid mass movements in glacial environment[Ph. D. Thesis][D]. Zurich：University of Zurich，2011. " target="_blank">
[15]	STRAUB S. Predictability of long runout landslide motion：implications from granular flow mechanics[J]. Geologische Rundschau，1997，86(2)：415-425. " target="_blank">
[17]	CLEARY P. W. Industrial particle flow modeling using discrete element method[C]// Engineering Computations：International Journal for Computer-aided Engineering and Software. [S. l.]：[s. n.]，2009：698-743. " target="_blank">
[19]	CHEN H，CROSTA G B，LEE C F. Erosional effects on runout of fast landslides， debris flows and avalanches：a numerical investigation[J]. Geotechnique，2006，56(5)：305-322. " target="_blank">
[22]	BÄCKLIN C，FINNSON H. Landslide hazard at the San Salvador volcano[R]. Stockholm，Sweden：Royal Institute of Technology，1994：136-137. " target="_blank">