Analysis of Rockfall Hazards Based on the Effect of Rock Size and Shape

被引:20
|
作者
Nagendran, Sharan Kumar [1 ]
Ismail, Mohd Ashraf Mohamad [1 ]
机构
[1] Univ Sains Malaysia, Sch Civil Engn, Engn Campus, Nibong Tebal, Pulau Pinang, Malaysia
关键词
Rockfall; Shapes; Sizes; Numerical analysis; Laboratory experiment; COMPUTER-PROGRAM; SIMULATION; TRAJECTORIES; FALL;
D O I
10.1007/s40999-019-00418-1
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Rock sizes and shapes influence the trajectories of rockfall. Thus, this study examined the bounce height and runout distance of falling rocks on the basis of different rock sizes, rock shapes, and ground surfaces. A laboratory experiment of rocks with various sizes falling from 35 degrees, 45 degrees, and 60 degrees slope angles and vertically on different ground surfaces was conducted in this study to understand the mechanism of falling rocks. RocFall 5.0 (Rocscience), a 2D rockfall numerical simulation program, was used to perform the probable bounce height and runout distance for various rock shapes on different ground surfaces. The laboratory experiment and a numerical simulation were compared to validate the applicability of laboratory testing in rockfall assessment and calibrate the coefficient of restitution, which is a critical parameter in bouncing blocks. Results indicated that steep slopes and hard ground surfaces cause a high bounce height of falling rocks. Moreover, light rocks bounce higher than heavy rocks, and rocks with round shapes bounce high initially and then roll further away from the falling slope. Therefore, the influence of rock sizes and shapes and impact surface material must not be omitted in investigating rockfall protective measures.
引用
收藏
页码:1919 / 1929
页数:11
相关论文
共 50 条
  • [1] Analysis of Rockfall Hazards Based on the Effect of Rock Size and Shape
    Sharan Kumar Nagendran
    Mohd Ashraf Mohamad Ismail
    [J]. International Journal of Civil Engineering, 2019, 17 : 1919 - 1929
  • [2] Mitigation effects of trees on rockfall hazards: does rock shape matter?
    Lu, Guang
    Ringenbach, Adrian
    Caviezel, Andrin
    Sanchez, Miguel
    Christen, Marc
    Bartelt, Perry
    [J]. LANDSLIDES, 2021, 18 (01) : 59 - 77
  • [3] Mitigation effects of trees on rockfall hazards: does rock shape matter?
    Guang Lu
    Adrian Ringenbach
    Andrin Caviezel
    Miguel Sanchez
    Marc Christen
    Perry Bartelt
    [J]. Landslides, 2021, 18 : 59 - 77
  • [4] Simulation of rockfall trajectories with consideration of rock shape
    R. I. Leine
    A. Schweizer
    M. Christen
    J. Glover
    P. Bartelt
    W. Gerber
    [J]. Multibody System Dynamics, 2014, 32 : 241 - 271
  • [5] Simulation of rockfall trajectories with consideration of rock shape
    Leine, R. I.
    Schweizer, A.
    Christen, M.
    Glover, J.
    Bartelt, P.
    Gerber, W.
    [J]. MULTIBODY SYSTEM DYNAMICS, 2014, 32 (02) : 241 - 271
  • [6] DEM analyses of rock block shape effect on the response of rockfall impact against a soil buffering layer
    Shen, Weigang
    Zhao, Tao
    Dai, Feng
    Jiang, Mingjing
    Zhou, Gordon G. D.
    [J]. ENGINEERING GEOLOGY, 2019, 249 : 60 - 70
  • [7] The relevance of rock shape over mass—implications for rockfall hazard assessments
    Andrin Caviezel
    Adrian Ringenbach
    Sophia E. Demmel
    Claire E. Dinneen
    Nora Krebs
    Yves Bühler
    Marc Christen
    Guillaume Meyrat
    Andreas Stoffel
    Elisabeth Hafner
    Lucie A. Eberhard
    Daniel von Rickenbach
    Kevin Simmler
    Philipp Mayer
    Pascal S. Niklaus
    Thomas Birchler
    Tim Aebi
    Lukas Cavigelli
    Michael Schaffner
    Stefan Rickli
    Christoph Schnetzler
    Michele Magno
    Luca Benini
    Perry Bartelt
    [J]. Nature Communications, 12
  • [8] Evaluation of Potential Rockfall Hazards on High, Steep Rock Cutting Slope and Protection Suggestions
    Ji, Zhong-Min
    Sun, Jun-Hong
    Wu, Fa-Quan
    Chen, Tian-Li
    Li, Zhen-Hua
    Chen, Xin-Ming
    [J]. Zhongguo Gonglu Xuebao/China Journal of Highway and Transport, 2023, 36 (10): : 119 - 130
  • [9] Analysis of the Effects of a Rotating Rock on Rockfall Protection Barriers
    Qi X.
    Pei X.
    Han R.
    Yang Y.
    Meng Q.
    Yu Z.
    [J]. Geotechnical and Geological Engineering, 2018, 36 (5) : 3255 - 3267
  • [10] The relevance of rock shape over mass-implications for rockfall hazard assessments
    Caviezel, Andrin
    Ringenbach, Adrian
    Demmel, Sophia E.
    Dinneen, Claire E.
    Krebs, Nora
    Buehler, Yves
    Christen, Marc
    Meyrat, Guillaume
    Stoffel, Andreas
    Hafner, Elisabeth
    Eberhard, Lucie A.
    von Rickenbach, Daniel
    Simmler, Kevin
    Mayer, Philipp
    Niklaus, Pascal S.
    Birchler, Thomas
    Aebi, Tim
    Cavigelli, Lukas
    Schaffner, Michael
    Rickli, Stefan
    Schnetzler, Christoph
    Magno, Michele
    Benini, Luca
    Bartelt, Perry
    [J]. NATURE COMMUNICATIONS, 2021, 12 (01)