Determining Method of Backfill Strength Based on Damage Constitutive Model
Backfill strength and ratio determining is one of the key for the stage of open stoping with subsequent filling mining method. Since some problems occur when adopting traditional method to determine filling strength, it is necessary to explore a more scientific approach to study reasonable match between backfill strength and rock mass. ZhongGuan iron mine’s backfill were subjected to laboratory mechanics test, and their stress-strain curves were obtained, backfill's damage constitutive models before peak stress were established by using damage mechanics. According to the principle that the peak deformation energy of backfill should be corresponded to releasing energy from excavated rock mass, the optimum backfill strength and ratio of ZhongGuan iron mine were determined, which plays a significant role in fill mining production on site.
Jones, H. and Boger, D. V. (2012): “Sustainability and waste management in the resource industries [J].” Ind. Eng. Chem. Res., 2012, 51 (30): 10057-10065.
Kermani, M., Hassani, F. P. and Aflaki, E. et al. (2015): “Evaluation of the effect of sodium silicate addition to mine backfill, Gelfill - Part 1 [J].” Journal of Rock Mechanics and Geotechnical Engineering, 2015, 7(3): 266-272.
Li, Li. (2013): “A new concept of backfill design-Application of wick drains in backfilled stopes.” International Journal of Mining Science and Technology, 2013, 23(5): 763-770.
Cai, Si-jing, Huang, Gang and Wu, Di, et al. (2015): “Experimental and Modeling Study on the Rheological Properties of Tailings Backfill [J].” Journal of Northeastern University:Natural Science, 2015, 36(6): 882-886.
Belem, Tikov and Benzaazoua, Mostafa (2008): “Design and Application of Underground Mine Paste Backfill Technology [J].” Geotechnical and Geological Engineering, 2008, 26(2): 147-174.
Zhang, Fa-wen, Liu, Wen-xia and Shen, Lian-feng (2012): Damage constitutive model for cemented paste backfill after mixing waste rock [C]//2012 World Automation Congress (WAC). Puerto Vallarta: IEEE, 2012: 1-4.
Yu, Gen-bo, Yang, Peng and Chen, Yin-zhou (2013): “Study on Damage Constitutive Model of Cemented Tailings Backfill under Uniaxial Compression [J].” Applied Mechanics and Materials, 2013, 353-356: 379-383.
Zhang, Qian-gui, Yin, Guang-zhi and Fan, Xiang-yu, et al. (2012): “A damage constitutive model of tailings based on the analysis of elastic-plastic and sliding of skeleton grains [J].” Disaster Advances, 2012, 5(4): 730-735.
Liu, Zhi-xiang, Li, Xi-bing and Dai, Ta-gen, et al. (2006): “On damage model of cemented tailings backfill and its match with rock mass [J].” Rock and Soil Mechanics, 2006, 27(9):1442-1446.
Xue, Zhi-cheng, Yang, Lu and Yang, Zeng-jie (2010): A damage model with subsection curve of concrete and its numerical verification based on ABAQUS[C]//2010 International Conference on Computer Design and Applications (ICCDA), Qinhuangdao: IEEE, 2010, 5:34-37.
Lemaitre, J. (1984): “How to use damage mechanics [J].” Nuclear Eang. & Design, 1984, 80(1):233-245.
Liu, Zhi-xiang, Lan, Ming and Xiao, Shi-You, et al. (2015): “Damage failure of cemented backfill and its reasonable match with rock mass [J].” Transactions of Nonferrous Metals Society of China, 2015, 25(3): 954-959.
Liu, Yu-long, Ding, De-xing and Li, Guang-yue, et al. (2013): “Match between the solidification of the cemented backfill and the vertical stress in the excavated ore body [J].” Journal of Mining and Safety Engineering, 2013, 30(4):526-530.
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