DEM Evaluation of Evacuation Behavior: A Case Study of "The Mosque of ASMU"

Document Type : Risk Management


Azarbaijan Shahid Madani University


Safety is a primary consideration in any building. There are many risk factors which can cause casualties such as earthquake and fire. An important consideration in an emergency situation is the evacuation of people. This is of great importance when a large number of people are in confined spaces such as mosques and subway stations. To evaluate the evacuation of a place, an effective way is simulation. In this paper, as a case study, we simulate the evacuation behavior of the mosque of Azarbaijan Shahid Madani University (ASMU) using Distinct Element Method (DEM) in which an analysis of the position of each person can be computed step by step by solving the equation of motion. Four cases with different number and width of exits are considered, and evacuation behavior including evacuation time, density on exits, and flow rate are estimated quantitatively. Evacuation time is calculated to be 591, 156, 138 and 114 sec for cases 1 to 4, respectively. Density on exit 1 is equal to 4.5 (person/m2) for all four cases, and onexit 2 is calculated to be 4.23, 2.4, 2.4 and 1.47 (person/m2), for cases 1 to 4, respectively. As results show exit widths and number of exits have great influences on evacuation behavior. It is recommended that before construction of public buildings, evacuation simulations to achieve optimum evacuation behavior to be done.


  1. Singh, H., Arter, R., Dodd, L., Langston, P., Lester, E., and Drury, J. (2009) Modelling subgroup behavior in crowd dynamics DEM dimulation. Applied Mathematical Modeling, 33, 4408-4423.
  2. Langston, P., Masling, R., and Asmar, B. (2006) Crowd dynamics discrete element multi-circle model. Safety Science, 44, 395-417.
  3. Gwynne. S., Galea, E., Owen, M., Lawrence, P., and Filippidis, L. (1999) A review of the methodologies used in the computer simulation of evacuation from the built environment. Building and Environment, 34, 741-749.
  4. Zheng, X., Zhong, T., and Liu, M. (2009) Modeling crowd evacuation of a building based on seven methodological approaches. Building and Environment, 44(3), 437-445.
  5. Javanbarg, M.B., Mahdavian, F., Koyama, M., Shahbodaghkhan, B., Kiyono, J., and Murakami, H. (2012) Dynamic intelligent swarm-based tsunami evacuation, model: case study of the 2011 Tohoku earthquake. 15WCEE, Paper No. 4645, Lisbon, Portugal.
  6. Asmar, B.N., Langston, P.A., Matchett, A.J., and Walters, J.K. (2002) Validation tests on a distinct element model of vibrating cohesive particle systems. Computers and Chemical Engineering, 26, 758-802.
  7. Helbing, D. (1992) A fluid-dynamic model for the movement of pedestrians. Complex Systems, 6, 391-415.
  8. Nagel, K. and Schreckenberg, M. (1992) A cellular automation model for freeway traffic. Journal de Physique I, 2(12), 2221-2229.
  9. Klupfel, H., Meyer-Konig, M., Wahle, J., and Schreckenberg, M. (2000) 'Microscopic Simulation of Evacuation Processes on Passenger Ships.' In: Theoretical and Practical Issues on Cellular Automata, Bandini, S. and Worsch, T. (Eds.), Springer, Berlin, 63-71.
  10. Carrion-Schafer, B., Quigley, S.F., and Chan, A.H. (2001) Evaluation of an FPGA implementation of the discrete element method. Proceedings of International Conference of Field-Programmable Logic and Application, Berlin.
  11. Kiyono, J., Miura, F., and Takimato, K. (1996) Simulation of emergency evacuation behavior in a disaster by using distinct element method. Proc. of Japan Society of Civil Engineering, 537/I-35, 233-244.
  12. Kiyono, J., Miura K., and Yagi, K. (1998) Evacuation simulation in emergency by using DEM. Proc. of Japan Society of Civil Engineering, 591/I-43, 366-378.
  13. Kiyono, J., Toki, K., and Miura, F. (2000) Simulation of evacuation behavior from an underground passageway during an Earthquake. 12WCEE, Paper No. 1800, Auckland, New Zealand.
  14. Kiyono, J. and Mori, N. (2004) Simulation of emergency evacuation behavior during a disaster by use of elliptic distinct Elements. 13WCEE, Paper No. 134, Vancouver, Canada.
  15. Alighadr, S., Fallahi, A., Kiyono, J., Rizqi, F.N., and Miyajima, M. (2011) Simulation of evacuation behavior during a disaster, study case: Seghatol Islam Mosque of Tabriz Bazaar. Proceeding of the Ninth International Symposium on Mitigation of Geo-Disasters in Asia, 39-44, Indonasia.
  16. Mahdavian, F., Koyama, M., Kiyono, J., and Murakami, H. (2012) Simulation of tsunami evacuation behavior during the 2011 east Japan great earthquake by distinct element model. International Symposium on Ear thquake Engineering, JAEE, 1.
  17. Alighadr, S., Fallahi, A., Kiyono, J., Rizqi, F.N., and Miyajima, M. (2012) Emergency evacuation during a disaster, study case: "Timche Muzaffariyye - Tabriz Bazaar". 15WCEE, Paper No. 3370, Lisbon, Portugal.
  18. Alighadr, S., Fallahi, A., Kiyono, J., and Miyajima, M. (2013) 'Simulation of Evacuation behavior during a Disaster for Classes Building of Azarbaijan Shahid Madani University by Using DEM'. In: Progress of Geo-Disaster Mitigation in Asia , Wang, F., Miyajima, M., Li, T., Shan, W. and Fathani, T.F. (Eds), Springer, Berlin, 391-399.
  19. Alighadr, S. and Fallahi, A. (2015) Emergency evacuation of subway stations during a disaster, study case: "STATION 5 OF TURO". SEE7, Paper No. 00282-IM, Tehran, Iran.
  20. Thompson, P.A. and Marchant, E.W. (1995) A computer model for the evacuation of large building populations. Fire Safety Journal, 24, 131-148