RESEARCH ON THE WATER-HOLDING CAPACITY AND MECHANICAL PROPERTIES OF BACKFILL BASED ON A DAMAGE-SOFTENING CONSTITUTIVE MODEL: EFFECTS OF DIFFERENT PERMEABILITY FORCES
Keywords:
backfill, centrifugal simulation, osmotic pressure, mechanical properties
Abstract
This study investigates the application of tailings backfill through a series of centrifugal and pore characteristic tests. To align with the material’s structural properties, a specialized test mold was developed, enabling the preparation of tailings backfill model samples with varying concentrations and proportions. Employing centrifugation and nuclear magnetic resonance (NMR), the study determined the optimal centrifugal force and the T2 critical value for the backfill material. By simulating seepage pressures induced by different centrifugal speeds, uniaxial compression mechanical tests were conducted to analyze the effects of seepage forces on the deformation characteristics and failure modes of the backfill. The results revealed that as seepage force increased, the stress-strain behavior of the samples was altered, with failure modes transitioning from tensile failure to shear failure. This shift was accompanied by an increase in the crack propagation and morphological complexity. Based on these findings, a damage-softening constitutive model incorporating penetration forces was established and validated against experimental data, demonstrating strong agreement. This model provides a robust framework for analyzing uniaxial compression mechanics of backfill materials under varying penetration forces. The outcomes of this research provide valuable insights into high-gravity centrifugal simulations and underground seepage tests, contributing significantly to the design and safety evaluation of tailings backfill systems.
References
[1] Liu, Jiawei, et al. "Durability of water-affected paste backfill material and its clean use in coal mining." Journal of Cleaner Production 250 (2020): 119576.
[2] Emad, Muhammad Zaka, Hani Mitri, and Cecile Kelly. "Dynamic model validation using blast vibration monitoring in mine backfill." International Journal of Rock Mechanics and Mining Sciences 107 (2018): 48-54.
[3] Li, Jiajian, Erol Yilmaz, and Shuai Cao. "Influence of industrial solid waste as filling material on mechanical and microstructural characteristics of cementitious backfills." Construction and Building Materials 299 (2021): 124288.
[4] Li, Genwei, Guang-zhe Deng, and Jingong Ma. "Numerical modelling of the response of cemented paste backfill under the blasting of an adjacent ore stope." Construction and Building Materials 343 (2022): 128051.
[5] Nasir O, Fall M. Coupling binder hydration, temperature and compressive strength development of underground cemented paste backfill at early ages[J]. Tunnelling and Underground Space Technology, 2010, 25(1): 9-20.
[6] Ghirian A, Fall M. Coupled thermo-hydro-mechanical–chemical behaviour of cemented paste backfill in column experiments. Part I: physical, hydraulic and thermal processes and characteristics[J]. Engineering Geology, 2013, 164: 195-207.
[7] Ghirian A, Fall M. Coupled thermo-hydro-mechanical–chemical behaviour of cemented paste backfill in column experiments: Part II: Mechanical, chemical and microstructural processes and characteristics[J]. Engineering Geology, 2014, 170: 11-23.
[8] Lemaitre J. How to use damage mechanics [J]. Nuclear Engineering & Design, 1984, 80(2):233-245.
[9] Kittl P, Diaz G. Weibull's fracture statistics, or probabilistic strength of materials: state of the art[J]. Res Mechanica, 1988, 24(2):99-207.
[10] Cao, Wen-gui, Xiang Li, and Heng Zhao. "Damage constitutive model for strain-softening rock based on normal distribution and its parameter determination." Journal of Central South University of Technology 14.5 (2007): 719-724.
[11] Wang, Zhi-liang, Yong-chi Li, and Jian-Guo Wang. "A damage-softening statistical constitutive model considering rock residual strength." Computers & Geosciences 33.1 (2007): 1-9.
[12] Yang, Sheng-Qi, Bo Hu, and Peng Xu. "Study on the damage-softening constitutive model of rock and experimental verification." Acta Mechanica Sinica 35 (2019): 786-798.
[13] Chen, Junchi, Weihua Wang, and Longfeng Chen. "A strain hardening and softening constitutive model for hard brittle rocks." Applied Sciences 13.5 (2023): 2764.
[14] Cao, Kewang, et al. "Statistical damage model for dry and saturated rock under uniaxial loading based on infrared radiation for possible stress prediction." Engineering Fracture Mechanics 260 (2022): 108134.
[15] ong, Zhixiang, and Junwen Zhang. "The effect of confining pressure on mechanical properties in coal and rock: review and new insights." Arabian Journal of Geosciences 14.23 (2021): 2564.
[16] Xiao, Yingming, et al. "A unified strain-hardening and strain-softening elastoplastic constitutive model for intact rocks." Computers and Geotechnics 148 (2022): 104772.
[17] Lee Y K, Pietruszczak S. A new numerical procedure for elasto-plastic analysis of a circular opening excavated in a strain-softening rock mass[J]. Tunnelling and Underground Space Technology, 2008, 23(5):588-599.
[18] Hu, Yingtao, et al. "Experimental study on the influence of hypergravity on the nonlinear flow behaviour in rock fracture." Rock Mechanics and Rock Engineering 57.2 (2024): 961-978.
[19] Belem T, Benzaazoua M. Predictive models for prefeasibility cemented paste backfill mix design[C]//The 3rd international conference on post-mining. 2008, 8: 6-8.
[20] Gao, R.; Zhou, K.; Zhang, J.; Guo, H.; Ren, Q. Research on the Dynamic Characteristics in the Flocculation Process of Mineral Processing Tailings. IEEE Access 2019, 7, 129244–129259.
[21] Multi-objective mixture design of cemented paste backfill using particle swarm optimisation algorithm. Miner. Eng. 2020, 153, 106385.
[22] Chen, Renpeng, et al. "Centrifugal model tests on face failure of earth pressure balance shield induced by steady state seepage in saturated sandy silt ground." Tunnelling And Underground Space Technology 81 (2018): 315-325.
[23] Wang, Qinke, et al. "Centrifugal model test based bearing characteristics and analytical model of uplift pile in combined composite ground." Rock Mechanics and Rock Engineering 55.6 (2022): 3525-3543.
[24] Zhao, Yang, et al. "Multifractal analysis of coal pore structure based on NMR experiment: A new method for predicting T2 cutoff value." Fuel 283 (2021): 119338.
[25] Sun, Chaowei, et al. "Uniaxial compressive mechanical properties and stress–strain model for roller-compacted concrete with initial damage subjected to freeze–thaw cycles." Construction and Building Materials 411 (2024): 134256.
[26] Liu, Xuewei, et al. "Effects of seepage pressure on the mechanical behaviors and microstructure of sandstone." Journal of Rock Mechanics and Geotechnical Engineering 16.6 (2024): 2033-2051.
[27] Hou, Chuantan, Zilong Zhang, and **aoli Yang. "Three-dimensional tunnel face stability considering the steady-state seepage in saturated and unsaturated regions with changing water levels." Computers and Geotechnics 146 (2022): 104741.
[28] Liu, Si-fei, et al. "Investigation of the influence mechanism of rock damage on rock fragmentation and cutting performance by the discrete element method." Royal Society Open Science 6.5 (2019): 190116.
[29] CChen, Song, et al. "Comparative study on three-dimensional statistical damage constitutive modified model of rock based on power function and Weibull distribution." Environmental earth sciences 77 (2018): 1-8.
[30] Lin, Hang, et al. "Comparative analysis of rock damage models based on different distribution functions." Geotechnical and Geological Engineering 40.1 (2022): 301-310.
[2] Emad, Muhammad Zaka, Hani Mitri, and Cecile Kelly. "Dynamic model validation using blast vibration monitoring in mine backfill." International Journal of Rock Mechanics and Mining Sciences 107 (2018): 48-54.
[3] Li, Jiajian, Erol Yilmaz, and Shuai Cao. "Influence of industrial solid waste as filling material on mechanical and microstructural characteristics of cementitious backfills." Construction and Building Materials 299 (2021): 124288.
[4] Li, Genwei, Guang-zhe Deng, and Jingong Ma. "Numerical modelling of the response of cemented paste backfill under the blasting of an adjacent ore stope." Construction and Building Materials 343 (2022): 128051.
[5] Nasir O, Fall M. Coupling binder hydration, temperature and compressive strength development of underground cemented paste backfill at early ages[J]. Tunnelling and Underground Space Technology, 2010, 25(1): 9-20.
[6] Ghirian A, Fall M. Coupled thermo-hydro-mechanical–chemical behaviour of cemented paste backfill in column experiments. Part I: physical, hydraulic and thermal processes and characteristics[J]. Engineering Geology, 2013, 164: 195-207.
[7] Ghirian A, Fall M. Coupled thermo-hydro-mechanical–chemical behaviour of cemented paste backfill in column experiments: Part II: Mechanical, chemical and microstructural processes and characteristics[J]. Engineering Geology, 2014, 170: 11-23.
[8] Lemaitre J. How to use damage mechanics [J]. Nuclear Engineering & Design, 1984, 80(2):233-245.
[9] Kittl P, Diaz G. Weibull's fracture statistics, or probabilistic strength of materials: state of the art[J]. Res Mechanica, 1988, 24(2):99-207.
[10] Cao, Wen-gui, Xiang Li, and Heng Zhao. "Damage constitutive model for strain-softening rock based on normal distribution and its parameter determination." Journal of Central South University of Technology 14.5 (2007): 719-724.
[11] Wang, Zhi-liang, Yong-chi Li, and Jian-Guo Wang. "A damage-softening statistical constitutive model considering rock residual strength." Computers & Geosciences 33.1 (2007): 1-9.
[12] Yang, Sheng-Qi, Bo Hu, and Peng Xu. "Study on the damage-softening constitutive model of rock and experimental verification." Acta Mechanica Sinica 35 (2019): 786-798.
[13] Chen, Junchi, Weihua Wang, and Longfeng Chen. "A strain hardening and softening constitutive model for hard brittle rocks." Applied Sciences 13.5 (2023): 2764.
[14] Cao, Kewang, et al. "Statistical damage model for dry and saturated rock under uniaxial loading based on infrared radiation for possible stress prediction." Engineering Fracture Mechanics 260 (2022): 108134.
[15] ong, Zhixiang, and Junwen Zhang. "The effect of confining pressure on mechanical properties in coal and rock: review and new insights." Arabian Journal of Geosciences 14.23 (2021): 2564.
[16] Xiao, Yingming, et al. "A unified strain-hardening and strain-softening elastoplastic constitutive model for intact rocks." Computers and Geotechnics 148 (2022): 104772.
[17] Lee Y K, Pietruszczak S. A new numerical procedure for elasto-plastic analysis of a circular opening excavated in a strain-softening rock mass[J]. Tunnelling and Underground Space Technology, 2008, 23(5):588-599.
[18] Hu, Yingtao, et al. "Experimental study on the influence of hypergravity on the nonlinear flow behaviour in rock fracture." Rock Mechanics and Rock Engineering 57.2 (2024): 961-978.
[19] Belem T, Benzaazoua M. Predictive models for prefeasibility cemented paste backfill mix design[C]//The 3rd international conference on post-mining. 2008, 8: 6-8.
[20] Gao, R.; Zhou, K.; Zhang, J.; Guo, H.; Ren, Q. Research on the Dynamic Characteristics in the Flocculation Process of Mineral Processing Tailings. IEEE Access 2019, 7, 129244–129259.
[21] Multi-objective mixture design of cemented paste backfill using particle swarm optimisation algorithm. Miner. Eng. 2020, 153, 106385.
[22] Chen, Renpeng, et al. "Centrifugal model tests on face failure of earth pressure balance shield induced by steady state seepage in saturated sandy silt ground." Tunnelling And Underground Space Technology 81 (2018): 315-325.
[23] Wang, Qinke, et al. "Centrifugal model test based bearing characteristics and analytical model of uplift pile in combined composite ground." Rock Mechanics and Rock Engineering 55.6 (2022): 3525-3543.
[24] Zhao, Yang, et al. "Multifractal analysis of coal pore structure based on NMR experiment: A new method for predicting T2 cutoff value." Fuel 283 (2021): 119338.
[25] Sun, Chaowei, et al. "Uniaxial compressive mechanical properties and stress–strain model for roller-compacted concrete with initial damage subjected to freeze–thaw cycles." Construction and Building Materials 411 (2024): 134256.
[26] Liu, Xuewei, et al. "Effects of seepage pressure on the mechanical behaviors and microstructure of sandstone." Journal of Rock Mechanics and Geotechnical Engineering 16.6 (2024): 2033-2051.
[27] Hou, Chuantan, Zilong Zhang, and **aoli Yang. "Three-dimensional tunnel face stability considering the steady-state seepage in saturated and unsaturated regions with changing water levels." Computers and Geotechnics 146 (2022): 104741.
[28] Liu, Si-fei, et al. "Investigation of the influence mechanism of rock damage on rock fragmentation and cutting performance by the discrete element method." Royal Society Open Science 6.5 (2019): 190116.
[29] CChen, Song, et al. "Comparative study on three-dimensional statistical damage constitutive modified model of rock based on power function and Weibull distribution." Environmental earth sciences 77 (2018): 1-8.
[30] Lin, Hang, et al. "Comparative analysis of rock damage models based on different distribution functions." Geotechnical and Geological Engineering 40.1 (2022): 301-310.
Published
2025-02-06
How to Cite
1.
Yang C, Huang Z, Sha W, Huang H, Gao R. RESEARCH ON THE WATER-HOLDING CAPACITY AND MECHANICAL PROPERTIES OF BACKFILL BASED ON A DAMAGE-SOFTENING CONSTITUTIVE MODEL: EFFECTS OF DIFFERENT PERMEABILITY FORCES. MatTech [Internet]. 2025Feb.6 [cited 2025Mar.25];59(1):93–103. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/1285
Section
Articles
