Modeling of dynamic fracture mechanism in rock masses due to wave propagation

  • Authors

    • Mirvat Abdallah Rafik Hariri University
    • Fatima Haidar
    2018-08-13
    https://doi.org/10.14419/ijet.v7i4.15407
  • Blast Wave, Dynamic Fracture Mechanism, Fracture Propagation, Numerical Modeling.

  • Abstract

    Finding a new oil well is a stimulating experience at all levels, however, it’s only an important milestone on the road towards exploiting oil and gas. When it comes to well drilling, the condition of the ground that surrounds the oil plays a major role. While there are many factors that dictate the success of exploring and drilling wells, porosity and permeability of the surrounding stone are some of the most important components.

    This paper focuses on the effective way to increase the porosity and the permeability of the rock using explosives without damaging the rock. In order to reach our aim, a numerical simulation was conducted. In fact, a 2D distinct element code was used, and 4 models were constructed; in each model the number of explosives increase while the blast load per explosive decreases.

    The dynamic stresses, and velocity vectors of the wave propagation were analyzed to evaluate the behavior of rock masses in each model. Moreover, a grid of history points was studied in order to compare the results and find the most suitable method to increase the crack propagation, therefore, the porosity and permeability along the rock masses, without damaging it.

     

     

  • References

    1. [1] Abdallah Mirvat, Salami Houssam, Overview of the Oil and Gas exploration in Lebanon, in Proceedings of the IEEE, 1st Mediterranean Gas and Oil International Conference (MedGO 2015), pp: 1-4 - April 2015, Beirut, Lebanon.

      [2] Aliabadian Z., Sharafisafa M., Nazemi M., Simulation of Dynamic Fracturing of continuum rock in open pit mining, Geomaterials, 2013, 3, 82-89. https://doi.org/10.4236/gm.2013.33011.

      [3] CEDRO, the National Geothermal Resource Assessment of Lebanon, February 2014.

      [4] CHO S. H., “A method for estimating the strength properties of a granitic rock subjected to dynamic loadingâ€, International Journal of Rock Mechanics and Mining Sciences 42(4):561-568 · June 2005 with 11 Reads https://doi.org/10.1016/j.ijrmms.2005.01.004.

      [5] Commercial Explosives and Industrial Chemicals, Pakistan Ordnance Factories.

      [6] D. C. Wyliie and C. W. Mah, “Rock Slope Engineering,†4th Edition, Taylor & Francis, London, 2005.

      [7] E. Lopez, “Drilling and Blasting of Rocks,†A. A. Balkema, Netherlands, 1997.

      [8] http://almashriq.hiof.no/ddc/projects/geology/geology-of-lebanon/.

      [9] http://www.law.msu.edu/.

      [10] http://www.lpa.gov.lb/prequalification%20results.php.

      [11] http://www.dnr.louisiana.gov/assets/TAD/education/BGBB/4/rocks.html.

      [12] Itasca Consulting Group, Inc. 2014. UDEC, Universal Distinct Element Code. 4th ed. Minneapolis, USA.

      [13] www.jim.or.jp.

      [14] ws3-er.eng.hokudai.ac.jp.

      [15] Zheming Zhu, “Numerical prediction of crater blasting and bench blastingâ€, International Journal of Rock Mechanics and Mining Sciences 46(6):1088-1096 · September 2009 with 303 Reads DOI: 10.1016/j.ijrmms.2009.05.009. https://doi.org/10.1016/j.ijrmms.2009.05.009.

      [16] Z. Zhu, H. Xie and B. Mohanty, “Numerical Investigation of Blasting-Induced Damage in Cylindrical Rocks,†International Journal of Rock Mechanics and Mining Sciences, Vol. 45, No. 20, 2008, pp. 111-121. https://doi.org/10.1016/j.ijrmms.2007.04.012.

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  • How to Cite

    Abdallah, M., & Haidar, F. (2018). Modeling of dynamic fracture mechanism in rock masses due to wave propagation. International Journal of Engineering & Technology, 7(4), 4683-4690. https://doi.org/10.14419/ijet.v7i4.15407

    Received date: 2018-07-11

    Accepted date: 2019-01-14

    Published date: 2018-08-13