An Innovative Calculation Method of Trajectories of Rockfall


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Rockfall is a frequent engineering disaster confronted in the capital construction engineering. The key for preventing rock fall is the evaluation of the rockfall trajectory. After extensive analysis, an innovative calculation method of rockfall trajectory, called segmented cycling algorithm, has been proposed in the paper. According to the contact relationship between the rolling stones and the slope surface, the movement divided into three sections which include the jumping phase, the rolling (sliding) phase and collision phase, the formulae to calculate the velocity of different phases of motion are proposed respectively by segmented cycling algorithm. A similar model, based on a rock slope in Chongqing-Wanzhou highway, is established to verify the capability and validity of the presented algorithm. Compared with existing algorithm, the new algorithm is simple and clear, easy to use and so on. The algorithm meets the law of the movement of rockfall and can be used to forecast the kinetic feature of rockfall. It is also used as the basis for rockfall disaster prevention.



Advanced Materials Research (Volumes 368-373)

Edited by:

Qing Yang, Li Hua Zhu, Jing Jing He, Zeng Feng Yan and Rui Ren




Z. A. Wei et al., "An Innovative Calculation Method of Trajectories of Rockfall", Advanced Materials Research, Vols. 368-373, pp. 752-760, 2012

Online since:

October 2011




[1] Zhang Luqing, Yang Zhifa and Xu Bing. Rockfalls and rockfall hazards. Journal of Engineering Geology, Vol. 3 (2004), p.225.

[2] Shen Jun, He Siming and Wu Yong. Present research status and development trend of rockfall hazards. Journal of Catastrophology, Vol. 4 (2008), p.122.

[3] Liu zhuanzheng. Geological Hazard Investigation Guide. China Geological Publishing House (2000).

[4] Information on http: /www. cigem. gov. cn.

[5] Yang Zhifa, Zhang Luqing and Shang Yanjun. Two engineering geomechanics subjects to be worth paying close attention. Journal of Engineering Geology, Vol. 10 (2002), p.10.

[6] Lu Qing, Sun Hongyue, Zhai Sankou, Wang Huibang and Shang Yue quan. Evaluation models of rockfall trajectory. Journal of Natural Disasters, Vol. 2 (2003), p.79.

[7] Tang Hongmei and Yi Pengying. Research on dangerous rock movement route. Journal of Chongqing Architecture University, Vol. 1(2003), p.17.

[8] Hu Houtian. Collapses and Rockfalls. China Railway Publishing House (1989).

[9] Zhao Lina, Zhou Keping, Gao Feng and Yang Niange. Motion characteristics and control of rockfall of open pit slope. Journal of Catastrophology, Vol. 23 (2008), p.76.

[10] Warren Douglas Stevens. Rocfall: A tool for probabilistic analysis, design of remedial measures and prediction of rockfalls [D]. Toronto:University of Toronto, (1998).

[11] Jiang Jingcai, Yokino Kazuyoshi and Yamagami Takuo. Identification of DEM parameters for rockall simulation analysis. Chinese Journal of Rock Mechanics and Engineering, Vol. 12 (2008), p.2418.

[12] Huang Runqiu and Liu Weihua. Study on the movement characteristics of rolling rock blocks on platform. Advances in Earth Science, Vol. 5 (2008), p.517.

[13] Ya Nan, Wang Lansheng, Zhao Qihua and Xu Jin. Simulation study of rockfall kinematics. Journal of Geological Hazards and Environment Preservation, Vol. 2 (1996), p.25.

[14] Chau K T, Wong R H C and Wu J. J. Coefficient of restitution and rotational motions of rockfall impacts. International Journal of Rock Mechanics & Mining Sciences, Vol. 39 (2002), p.69.


[15] Zhu Bin. Study on rockfalls' motion characteristic on rock slope and disaster protection (M. S. Thesis). Chongqing University, (2010).