Construction time optimization for large underground excavations

Document Type : research - paper

Author

Rock mechanics and tunneling group, Mining engineering faculty, Amirkabir University of Technology

Abstract

Large and complex underground projects comprise of many excavation parts and require a relatively long construction period. Design and construction of such projects need a thorough analysis of many information including borehole logs, cycle time, requirements of equipments, the arrangement of multiple excavation faces along the project’s time-line, and the arrangement of equipment allocation among multiple faces. The result of this analysis should yield an optimum construction time and the required strategies to manage this period. This paper explains some methods to conduct such analyses to evaluate a geological model, the details of a cycle time, the strategy to evaluate the total construction time and its optimum value, and the strategy to optimize the equipment allocation. The results of these methods are beneficial for the projects’ engineers to reach to a better evaluation in the design phase of a project (e.g. bidding time) and to plan a better construction management strategy during the construction phase.

Keywords

References

منابع
[1]            NTNU, 2007a. Report 2A-05 Drill and Blast Tunnelling – Blast Design. Department of Civil and Transport Engineering, Trondheim, Norway.
[2]            NTNU, 2007b. Report 2B-05 Drill and Blast Tunnelling – Advance Rate. Department of Civil and Transport Engineering, Trondheim, Norway.
[3]            NTNU, 2007c. Report 2C-05 Drill and Blast Tunnelling – Costs. Department of Civil and Transport Engineering, Trondheim, Norway.
[4]            Holmberg, R., 1982. Charge Calculations for Tunnelling. Underground Mining Methods Handbook. Society of mining engineers, New york, pp. 1580–1589.
[5]            Langefors, U., Kihlstrom, B., 1978. The Modern Technique of Rock Blasting. third ed. Almqvist & Wiksell Forlag AB, Stockholm.
[6]            Persson, P.A., Holmberg, R., Lee, J., 2001. Rock Blasting and Explosives Engineering. sixth printing, CRC Press, USA.
[7]            Zare, S., Bruland, A., Rostami, J., 2016. “Evaluating D&B and TBM tunnelling using NTNU prediction models”, Tunnelling and Underground Space, Vol. 59, pp. 55-64.
[8]            Sandvik, 2009. “Benefits of computerized drilling in drill and blast tunneling”, Metec Conference.
[9]            Grimstad, E., Barton, N., 1993. “Updating of the Q-system for NMT”. International Symposium on Sprayed Concrete. Fagernes, Proceedings, pp. 46-66.
[10]          Tatiya, R. R., 2013. Surface and underground excavations. CRC Press, USA.
[11]         Wilber, L. D., 1982. Rock tunnels. In Tunnel Engineering Handbook, J. O. Bichel and T. R. Kuesel (eds). Van Nostrand-Reinhold, New York, pp. 123–207.
[12]          Maidl, B., Thewes, M., Maidl, U., 2013.  Handbook of Tunnel Engineering. Volume I: Structures and Methods, Ernst and Sohn, Germany.
 
 
 
Journal of Mining Engineering
Volume 15, Issue 49
January 2021
Pages 49-66

Files

History

  • Receive Date: 10 January 2020
  • Revise Date: 27 November 2020
  • Accept Date: 21 January 2021

Share

How to cite

Statistics