Modeling of landslide generated impulsive waves considering complex topography in reservoir area

The impulsive wave is considered as one of the most notably secondary hazards induced by landslides in reservoir areas. The impulsive wave with considerable wave amplitude is able to cause serious damage to the dam body, shoreline properties and lives. To investigate and predict the wave characteristics, many experimental studies employed the generalized channels rather than the realistic topography. Deviation from the idealized geometries may result in non-negligible effects due to the wave refraction or reflection with complex topography. To consider the topography effect, a prototype scaled experiment was conducted. A series of tests with different collocation of parameters were performed. The experimental results were then summarized to propose empirical equations to predict the maximum wave amplitude, and wave decay in channel direction. The generalized empirical equations can obtain better results for wave features prediction by compared with those derived from the idealized models. Furthermore, a 3D numerical modeling corresponding to the physical experiment was conducted based on the SPH method. The wave characteristics in the sliding and channel directions were investigated in detail including the maximum wave amplitude, wave run-up, wave arrival time and wave crest amplitude decay. The comparison between the simulation and experiment indicates the promising accuracy of the SPH simulation in determining the general features even with complex river topography. Finally, the limitation and applicability of both the experimental and numerical methods in analyzing the practical engineering problems were discussed. Combination of the both methods can benefit the hazard prevention and reduction for landslide generated impulsive waves in reservoir area.

[1]  Edward K. Noda,et al.  Water Waves Generated by Landslides , 1970 .

[2]  J. W. Kamphuis,et al.  IMPULSE WAVES GENERATED BY LANDSLIDES , 1970 .

[3]  Numerical Experiments of the Tsunami Associated with the Collapse of Mt. Mayuyama in 1792 , 1975 .

[4]  Steven A Hughes,et al.  PHYSICAL MODELS AND LABORATORY TECHNIQUES IN COASTAL ENGINEERING , 1993 .

[5]  J. Monaghan.  Simulating Free Surface Flows with SPH , 1994 .

[6]  Philippe Heinrich,et al.  Simulation of water waves generated by a potential debris avalanche in Montserrat, Lesser Antilles , 1998 .

[7]  R. Roche,et al.  Numerical modeling of a landslide-generated tsunami following a potential explosion of the Montserrat volcano , 1999 .

[8]  J. Monaghan.  Smoothed particle hydrodynamics , 2005 .

[9]  E. Semenza,et al.  History of the 1963 Vaiont slide: the importance of geological factors , 2000 .

[10]  Hermann M. Fritz,et al.  Lituya Bay Case Rockslide Impact and Wave Run-up , 2001 .

[11]  F. Imamura,et al.  Giant landslides, mega-tsunamis, and paleo-sea level in the Hawaiian Islands , 2001 .

[12]  Willi H. Hager,et al.  Landslide generated impulse waves. 2. Hydrodynamic impact craters , 2003 .

[13]  Stephan T. Grilli,et al.  Landslide tsunami case studies using a Boussinesq model and a fully nonlinear tsunami generation model , 2003 .

[14]  Philip Watts,et al.  Tsunamis generated by subaerial mass flows , 2003 .

[15]  M. Quecedo,et al.  Numerical modelling of impulse wave generated by fast landslides , 2004 .

[16]  Willi H. Hager,et al.  Near Field Characteristics of Landslide Generated Impulse Waves , 2004 .

[17]  Leslie George Tham,et al.  A large landslide in Zigui County, Three Gorges area , 2004 .

[18]  B. Bornhold,et al.  The Grand Banks landslide-generated tsunami of November 18, 1929: preliminary analysis and numerical modeling , 2005 .

[19]  P. De Girolamo,et al.  Great landslide events in Italian artificial reservoirs , 2005 .

[20]  W. Hager,et al.  Rutscherzeugte impulswellen in stauhaltungen [Landslide generated impulse waves in reservoirs] , 2006 .

[21]  P. García-Navarro,et al.  One-Dimensional Model of Shallow Water Surface Waves Generated by Landslides , 2006 .

[22]  Roger P. Denlinger,et al.  Usoi Dam Wave Overtopping and Flood Routing in the Bartang and Panj Rivers, Tajikistan , 2006 .

[23]  M. Gómez-Gesteira,et al.  Boundary conditions generated by dynamic particles in SPH methods , 2007 .

[24]  V. Heller.  Landslide generated impulse waves: prediction of near field characteristics , 2007 .

[25]  R. Carvalho,et al.  Landslides into reservoirs and their impacts on banks , 2007 .

[26]  Behzad Ataie-Ashtiani,et al.  Numerical simulation of landslide impulsive waves by incompressible smoothed particle hydrodynamics , 2008 .

[27]  B. Ataie-Ashtiani,et al.  Impulsive waves caused by subaerial landslides , 2008 .

[28]  Liu-Chao Qiu,et al.  Two-Dimensional SPH Simulations of Landslide-Generated Water Waves , 2008 .

[29]  Steve Green,et al.  Numerical Simulations of Tsunami Wave Generation by Submarine and Aerial Landslides Using RANS and SPH Models , 2009 .

[30]  Patrick J. Lynett,et al.  Hydrodynamic modeling of tsunamis from the Currituck landslide , 2009 .

[31]  Zhiquan Huang,et al.  The chaotic characteristics of landslide evolution: a case study of Xintan landslide , 2009 .

[32]  Willi H. Hager,et al.  Impulse Product Parameter in Landslide Generated Impulse Waves , 2010 .

[33]  Guirong Liu,et al.  Smoothed Particle Hydrodynamics (SPH): an Overview and Recent Developments , 2010 .

[34]  David Petley.  Geomorphological Hazards and Disaster Prevention: Landslide hazards , 2010 .

[35]  Chin Jian Leo,et al.  Analysis of Baishuihe landslide influenced by the effects of reservoir water and rainfall , 2010 .

[36]  W. Hager,et al.  Wave types of landslide generated impulse waves , 2011 .

[37]  Toyohiko Miyagi,et al.  Massive landslide triggered by 2008 Iwate–Miyagi inland earthquake in the Aratozawa Dam area, Tohoku, Japan , 2011 .

[38]  Silvia Bosa,et al.  Shallow water numerical model of the wave generated by the Vajont landslide , 2011, Environ. Model. Softw..

[39]  B. Rogers,et al.  GPUs, a New Tool of Acceleration in CFD: Efficiency and Reliability on Smoothed Particle Hydrodynamics Methods , 2011, PloS one.

[40]  Behzad Ataie-Ashtiani,et al.  Numerical simulation of wave generated by landslide incidents in dam reservoirs , 2011 .

[41]  Robert A. Dalrymple,et al.  SPHysics - development of a free-surface fluid solver - Part 2: Efficiency and test cases , 2012, Comput. Geosci..

[42]  O. Kimmoun,et al.  Shallow water waves generated by subaerial solid landslides , 2013 .

[43]  Benedict D. Rogers,et al.  Variable resolution for SPH: A dynamic particle coalescing and splitting scheme , 2013 .

[44]  Yin Yueping,et al.  Experimental modeling of tsunamis generated by subaerial landslides: two case studies of the Three Gorges Reservoir, China , 2014, Environmental Earth Sciences.

[45]  G. Pedersen,et al.  Benchmarking of Navier-Stokes codes for free surface simulations by means of a solitary wave , 2014 .

[46]  Xin Bai,et al.  Finite element simulation of impulse wave generated by landslides using a three-phase model and the conservative level set method , 2016, Landslides.

[47]  J. Godt,et al.  Landslide Hazards , 2018, Foundations of Engineering Geology.