پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 158 |
| تعداد شمارهها | 6,230 |
| تعداد مقالات | 67,755 |
| تعداد مشاهده مقاله | 115,102,446 |
| تعداد دریافت فایل اصل مقاله | 89,854,386 |
Benchmark study of rock slope stability through Generalized Hoek-Brown criterion: case study of an open pit in Sudan | ||
| International Journal of Mining and Geo-Engineering | ||
| مقاله 2، دوره 56، شماره 1، خرداد 2022، صفحه 11-18 اصل مقاله (682.41 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijmge.2021.305854.594855 | ||
| نویسندگان | ||
| Younes Tahir1؛ Imad kadiri* 1؛ Saif ed- Din Fertahi2؛ Omar Iken1؛ Maryam Dlimi1؛ Rachid Agounoun1؛ Miloud Rahmoune1؛ Khalid Sbai1 | ||
| 1Université Moulay Ismail (UMI), Laboratoire d’Etude des Matériaux Avancés et Applications (LEM2A), Ecole Supérieure de Technologie de Meknès, Morocco | ||
| 2Thermodynamics and Energy” Research team, Energy Research Center, Physics Department, Faculty of Science, Mohammed V University in Rabat, Morocco | ||
| چکیده | ||
| The non-linear Generalized Hoek-Brown (GHB) failure criterion for rock mass is widely accepted and has been applied in a large number of open pits slope designs. This paper proposes new equations for estimating the maximum confining stress from the (GHB) parameters and geometrical properties of the slope in the case where the strength ratio is critical (SR)_crit=(σ_ci/γH)_crit and the factor of safety (FOS)=1. This maximum confining stress can be used to calculate the global equivalent Mohr-Coulomb (MC) parameters. It was found that, compared to the calculation with the limit analysis method (LAM), the discrepancies do not exceed 5% and remain in the most cases less than 1%. Hence, the estimation of the (FOS) is much more improved, because the comparison of the literature’s results with the (LAM) leaded to a difference up to 21%. For any value of (FOS≠1), an iterative method has been proposed to evaluate (SR)_crit. The comparison between the results driven from this method and those of (LAM) showed a good agreement, which proves its accuracy. A case study has been conducted in an open pit located in Sudan to evaluate the discrepancy of the (FOS) provided by different methods using limit equilibrium method (LEM) with Rocscience Slide software and using the (LAM) given in the form of charts. | ||
| کلیدواژهها | ||
| Factor of safety؛ Limit analysis method؛ Limit equilibrium method؛ Open pit؛ Slope stability | ||
| مراجع | ||
|
[1] Hoek, E., & Brown, E. T. (1997). Practical estimates of rock mass strength, International journal of rock mechanics and mining sciences 34 (8) (1997) 1165–1186. https://doi.org/10.1016/S1365- 1609(97)80069-X
[2] Hobbs, D. (1966). A study of the behavior of a broken rock under triaxial compression, and its application to mine roadways, in International Journal of Rock Mechanics and Mining Sciences & Geomechanics 420 Abstracts, Vol. 3, Elsevier, pp. 11–43. https://doi.org/10.1016/0148-9062(66)90030-1
[3] Shah, S. P., McGarry, F. J., & Ladanyi, B. (1974). Use of the long-term strength concept in the determination of ground pressure on tunnel linings, in Proceedings of 3rd congress, international society for rock mechanics, Denver, Vol. 2, pp. 1150–1165.
[4] Ladanyi, B. (1974). Use of the long-term strength concept in the determination of ground pressure on tunnel linings, in: Proceedings of 3rd congress, international society for rock mechanics, Denver, Vol. 2, pp. 1150–1165.
[5] Hoek, E., & Brown, E. T. (1980). Empirical strength criterion for rock masses, Journal of Geotechnical and Geoenvironmental Engineering 106 (ASCE 15715).
[6] Hoek, E., Carranza-Torres, C., & Corkum, B. (2002). Hoek- brown failure criterion-2002 edition, Proceedings of NARMSTac 1 (1) 267–273.
[7] Bieniawski, Z. (1976). Rock mass classification in rock engineering applications, in Proceedings of a Symposium on Exploration for Rock Engineering, Vol. 12, 1976, pp. 97–106.
[8] Barton, N. (2002). Some new q-value correlations to assist in site characterisation and tunnel design, International journal of rock mechanics and mining sciences 39 (2) 185–216. https://doi.org/10.1016/S1365-1609(02)00011-4
[9] Kumar, P. (1998). Shear failure envelope of Hoek-Brown criterion for rock mass, Tunnelling and underground space technology 13 (4) 453–458. https://doi.org/10.1016/S0886- 7798(98)00088-1
[10] Collins, I. F., Gunn, C. I. M., Pender, M. J., & Yan, W. (1988). Slope stability analyses for materials with a non-linear failure envelope, International Journal for Numerical and Analytical Methods in Geomechanics 12 (5) 533–550. https://doi.org/10.1002/nag.1610120507
[11] Yang, X.-L., Li, L., & Yin, J.-H. (2004). Stability analysis of rock slopes with a modified Hoek–brown failure criterion, International Journal for Numerical and Analytical Methods in Geomechanics 28 (2) 181–190. https://doi.org/10.1002/nag.330
[12] Li, A.-J., Merifield, R., & Lyamin, A. (2008). Stability charts for rock slopes based on the hoek–brown failure criterion, International Journal of Rock Mechanics and Mining Sciences 45 (5) 689–700. https://doi.org/10.1016/j.ijrmms.2007.08.010
[13] Shen, J., Karakus, M., Xu, C. (2013). Chart-based slope stability assessment using the generalized Hoek–brown criterion, International Journal of Rock Mechanics and Mining Sciences 64 210–219. https://doi.org/10.1016/j.ijrmms.2013.09.002
[14] Sun, C., Chai, J., Xu, Z., Qin, Y., & Chen, X. (2016). Stability charts for rock mass slopes based on the Hoek-Brown strength reduction technique. Engineering Geology, 214, 94-106. https://doi.org/10.1016/j.enggeo.2016.09.017
[15] Balmer, G. (1952). A general analysis solution for mohr’s envelope, in Proc. ASTM, Vol. 52, pp. 1260–1271.
[16] Shen, J., Priest, S., & Karakus, M. (2012). Determination of mohr–coulomb shear strength parameters from generalized Hoek–brown criterion for slope stability analysis, Rock mechanics and rock engineering 45 (1) 123–129. https://doi.org/10.1007/s00603-011-0184-z
[17] Rocscience, 2d limit equilibrium analysis software, slide 5.0. URL www.rocscience.com
[18] Li, A., Merifield, R., & Lyamin, A. (2011). Effect of rock mass disturbance on the stability of rock slopes using the Hoek– Brown failure criterion, Computers and Geotechnics 38 (4) 546–558. https://doi.org/10.1016/j.compgeo.2011.03.003
[19] Li, A.-J., Lyamin, A., & Merifield, R. (2009). Seismic rock slope stability charts based on limit analysis methods, Computers and Geotechnics 36 (1-2) 135 – 148. HTTPS : // doi.org / 10.1016 / j.compgeo.2008.01.004
[20] Srk consulting ”geotechnical feasibility study of wadi gabgaba open pit slope design”. Sudan (July 2012).
[21] Hoek, E., Carter, TG., & Diederichs, MS. (2013). Quantification of the geological strength index chart. In: 47th US rock mechanics/geomechanics symposium, American Rock Mechanics Association (ARMA 13–672). | ||
|
آمار تعداد مشاهده مقاله: 513 تعداد دریافت فایل اصل مقاله: 343 |
||