Mechanical Response of Barricade to Coupled THMC Behavior of Cemented Paste Backfill
Source abstract
Abstract
Abstract Cemented paste backfill (CPB), which is prepared by mixing tailings, binder and water, is widely used in underground mines for waste management and ground control. Since the CPB is delivered into mined-out areas in the form of fluid, a barricade needs to be constructed for retaining it during the process of its filling and hardening. Therefore, the barricade should have enough mechanical stability to ensure the safety of the backfill operation. The behavior of CPB, which is influenced by the thermal, hydraulic, mechanical and chemical (THMC) coupled processes, acts on the barricade and thus affects its mechanical response. In the present study, a numerical model is developed to predict and analyze the barricade mechanical performance in response to the coupled THMC behavior of CPB. The validity of the proposed model is then verified against two field case studies. Acceptable agreement between the model prediction results and in situ monitoring data proves the capability of the developed model in simulating the barricade pressure and displacement. Then, the validated model is used to investigate the effect of filling strategy on the barricade displacement. The obtained results can contribute to a better understanding of the barricade performance under various backfill conditions.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Tailings Management and Properties · Rock Mechanics and Modeling · Mine drainage and remediation techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Abdul-Hussain, N., & Fall, M. (2011). Unsaturated hydraulic properties of cemented tailings backfill that contains sodium silicate. Engineering Geology,123(4), 288–301.10.1016/j.enggeo.2011.07.011 ↗
2. Belem, T., Harvey, A., Simon, R., Aubertin, M. (2004). Measurement of internal pressures of a gold mine pastefill during and after the stope backfilling. In: 5th International symposium on ground support in mining and underground construction, pp. 619–630.
3. Bittnar, Z. (2006). Microstructure-based micromechanical prediction of elastic properties in hydrating cement paste. Cement and Concrete Research,36(9), 1708–1718.10.1016/j.cemconres.2006.05.014 ↗
4. Boumiz, A., Vernet, C., & Tenoudji, F. C. (1996). Mechanical properties of cement pastes and mortars at early ages: Evolution with time and degree of hydration. Advanced Cement Based Materials,3(3), 94–106.
5. COMSOL. (2015). COMSOL Multiphysics 5.1, http://www.comsol.com.
6. Cui, L., & Fall, M. (2015). A coupled thermo-hydro-mechanical-chemical model for underground cemented tailings backfill. Tunnelling and Underground Space Technology,50, 396–414.10.1016/j.tust.2015.08.014 ↗
7. Cui, L., & Fall, M. (2016). An evolutive elasto-plastic model for cemented paste backfill. Computers and Geotechnics,71, 19–29.10.1016/j.compgeo.2015.08.013 ↗
8. Cui, L., & Fall, M. (2017). Modeling of pressure on retaining structures for underground fill mass. Tunnelling and Underground Space Technology,69, 94–107.10.1016/j.tust.2017.06.010 ↗
9. Cui, L., & Fall, M. (2018). Multiphysics modeling and simulation of strength development and distribution in cemented tailings backfill structures. International Journal of Concrete Structures and Materials,12, 25. https://doi.org/10.1186/s40069-018-0250-y.10.1186/s40069-018-0250-y ↗
10. De Schutter, G., & Taerwe, L. (1996). Degree of hydration-based description of mechanical properties of early age concrete. Materials and Structures,29(6), 335–344.10.1007/BF02486341 ↗
11. Doherty, J. P. (2015). A numerical study into factors affecting stress and pore pressure in free draining mine stopes. Computers and Geotechnics,63, 331–341.10.1016/j.compgeo.2014.10.001 ↗
12. Doherty, J. P., Hasan, A., Suazo, G. H., & Fourie, A. (2015). Investigation of some controllable factors that impact the stress state in cemented paste backfill. Canadian Geotechnical Journal,52, 1901–1912.10.1139/cgj-2014-0321 ↗
13. Ercikdi, B., Kesimal, A., Cihangir, F., Deveci, H., & Alp, I. (2009). Cemented paste backfill of sulphide-rich tailings: Importance of binder type and dosage. Cement and Concrete Composites,31, 268–274.10.1016/j.cemconcomp.2009.01.008 ↗
14. Fall, M., Benzaazoua, M., & Ouellet, S. (2005). Experimental characterization of the effect of tailings fineness and density on the quality of cemented paste backfill. Minerals Engineering,18, 41–44.10.1016/j.mineng.2004.05.012 ↗
15. Fall, M., Benzaazoua, M., & Sae, E. (2008). Mix proportioning of underground cemented paste backfill. Tunnelling and Underground Space Technology,23, 80–90.10.1016/j.tust.2006.08.005 ↗
16. Fall, M., & Pokharel, M. (2010). Coupled effects of sulphate and temperature on the strength of CPB. Cement and Concrete Composites,32(10), 819–928.10.1016/j.cemconcomp.2010.08.002 ↗
17. Galaa, A. M., Thompson, B. D., Grabinsky, M. W., & Bawden, W. F. (2011). Characterizing stiffness development in hydrating mine backfill using ultrasonic wave measurements. Canadian Geotechnical Journal,48(8), 1174–1187.10.1139/t11-026 ↗
18. Ghirian, A., & Fall, M. (2013). Coupled thermo-hydro-mechanical–chemical behavior of cemented paste backfill in column experiments. Part I: Physical, hydraulic and thermal processes and characteristics. Engineering Geology,164, 195–207.10.1016/j.enggeo.2013.01.015 ↗
19. Helinski, M., Fahey, M., & Fourie, A. (2007). Numerical modeling of cemented mine backfill deposition. Journal of Geotechnical and Geoenvironment,133, 1308–1319.10.1061/(ASCE)1090-0241(2007)133:10(1308) ↗
20. Helinski, M., Fahey, M., & Fourie, A. (2011). Behavior of cemented paste backfill in two mine stopes: Measurements and modeling. Journal of Geotechnical and Geoenvironmental engineering,137, 171–182.10.1061/(ASCE)GT.1943-5606.0000418 ↗
21. Jin Sang, H. H., & Kwang, M. L. (2001). Estimation of compressive strength by a new apparent activation energy function. Cement and Concrete Research,31(2), 217–225.10.1016/S0008-8846(00)00481-6 ↗
22. Kesimal, A., Ercikdi, B., & Yilmaz, E. (2003). The effect of desliming by sedimentation on paste backfill performance. Minerals Engineering,16, 1009–1011.10.1016/S0892-6875(03)00267-X ↗
23. Kjellsen, K. O., & Detwiler, R. J. (1993). Later-age strength prediction by a modified maturity model. ACI Materials Journal,90(3), 220–227.
24. Kjellsen, K. O., Detwiler, R. J., & Gjørv, O. E. (1991). Development of microstructures in plain cement pastes hydrated at different temperatures. Cement and Concrete Research,21(1), 179–189.10.1016/0008-8846(91)90044-I ↗
25. Krus, M., Hansen, K. K., & Kiinzel, H. M. (1997). Porosity and liquid absorption of cement paste. Materials and Structures,30, 394–398.10.1007/BF02498561 ↗
26. Luckner, L., van Genuchten, M. T., & Nielsen, D. R. (1989). A consistent set of parametric models for the two-phase flow of immiscible fluids in the subsurface. Water Resources Research,25(10), 2187–2193.10.1029/WR025i010p02187 ↗
27. Mahlaba, J. S., Kearsley, E. P., Richard, A., & Kruger, R. A. (2011). Physical, chemical and mineralogical characterisation of hydraulically disposed fine coal ash from SASOL Synfuels. Fuel,90(7), 2491–2500.10.1016/j.fuel.2011.03.022 ↗
28. Mainguy, M., Coussy, O., & Baroghel-Bouny, V. (2001). Role of air pressure in drying of weakly permeable materials. Journal of Engineering Mechanics,127, 582–592.10.1061/(ASCE)0733-9399(2001)127:6(582) ↗
29. Mualem, Y. (1976). A new model for predicting the hydraulic conductivity of unsaturated porous media. Water Resources Research,12, 513–522.10.1029/WR012i003p00513 ↗
30. Pokharel, M., & Fall, M. (2013). Combined influence of sulphate and temperature on the saturated hydraulic conductivity of hardened cemented paste backfill. Cement and Concrete Composites,38, 21–28.10.1016/j.cemconcomp.2013.03.015 ↗
31. Poole, J. L., Riding, K. A., Folliard, K. J., Juenger, M. C. G., & Schindler, A. K. (2007). Methods for calculating activation energy for Portland cement. ACI Materials Journal,104(1), 303–311.
32. Poyet, S., Charlesa, S., Honoré, N., & L’hostisa, V. (2011). Assessment of the unsaturated water transport properties of an old concrete: Determination of the pore-interaction factor. Cement and Concrete Research,41, 1015–1023.10.1016/j.cemconres.2011.06.002 ↗
33. Qi, C., & Fourie, A. (2019). Numerical investigation of the stress distribution in backfilled stopes considering creep behaviour of rock mass. Rock Mechanics and Rock Engineering,52, 3353–3371.10.1007/s00603-019-01781-0 ↗
34. Richards, L. A. (1931). Capillary conduction of liquids through porous mediums. Physics,1, 318–333.10.1063/1.1745010 ↗
35. Sayers, C., & Grenfell, R. (1993). Ultrasonic propagation through hydrating cements. Ultrasonics,31(3), 147–153.10.1016/0041-624X(93)90001-G ↗
36. Schindler, A. K., & Folliard, K. J. (2005). Heat of hydration models for cementitious materials. ACI Materials Journal,102(1), 24–33.
37. Taylor, S. C., Hoff, W. D., Wilson, M. A., & Green, K. M. (1999). Anomalous water transport properties of Portland and blended cement-based materials. Journal of Material Science Letters,18, 1925–1927.10.1023/A:1006677014070 ↗
38. Thomas, H. R., & Sansom, M. R. (1995). Fully coupled analysis of heat, moisture, and air transfer in unsaturated soil. Journal of Engineering Mechanics,121, 392–405.10.1061/(ASCE)0733-9399(1995)121:3(392) ↗
39. Thompson, B. D. (2010). Fieldwork report for paste backfill project at Cayeli Bakir Mine. Turkey: University of Toronto.
40. Thompson, B. D., Bawden, W. F., & Grabinsky, M. W. (2012). In situ measurements of cemented paste backfill at the Cayeli Mine. Canadian Geotechnical Journal,49, 755–772.10.1139/t2012-040 ↗
41. Thompson, B.D., Grabinsky, M.W., Bawden, W.F., Counter, D.B., 2009. In-situ measurements of cemented paste backfill in long-hole stopes. In Proceedings of the 3rd CANUS Rock Mechanics Symposium, Toronto, Ont. Paper 4061.
42. van Genuchten, M. T. (1980). A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal,44(5), 892–898.10.2136/sssaj1980.03615995004400050002x ↗
43. Wu, D., Fall, M., & Cai, S. (2014). Numerical modelling of thermally and hydraulically coupled processes in hydrating cemented tailings backfill columns. International Journal of Mining, Reclamation and Environment,28, 173–199.10.1080/17480930.2013.809194 ↗
44. Yumlu, M., Guresci, M., 2007. Paste backfill bulkhead monitoring—a case study from Inmet’s Cayeli mine, Turkey. In Proceedings of the 9th international symposium on mining with backfill, Montréal. Paper 28.
45. Zhang, B., Li, W., Feng, F., Wu, B., & Cao, X. (2012). Numerical simulation for fluid-solid coupling characteristics in surrounding rock of underground water-sealed oil storage based. Journal of Engineering Geology,5, 789–795.