模拟流态化迴行开采模式的采动应力演化探索

doi:10.3724/1000-6915.jrme.2026.0030

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Abstract Fluidized mining of deep solid resources represents an innovative approach to mining; however, the evolution of mining-induced stress under this method remains inadequately understood. To elucidate the mechanism of stress evolution and establish its relationship with laboratory testing conditions, this study employs FLAC3D numerical simulations to investigate the characteristics of the mining-induced stress field, the variations in the stress concentration coefficient, and the stress disturbance path under the looped mining layout of fluidized mining. The findings reveal that the evolution of mining-induced stress in looped mining exhibits stage-dependent behavior, leading to the development of a spatially non-uniform stress field ahead of the excavation face, which may result in long-term eccentric loading of mining equipment. The evolution trend of the stress concentration coefficient aligns with that observed in longwall mining. However, under the filling conditions considered in this study, the asymptotic value (2.0–2.4) is approximately 20% lower than that observed in longwall mining, indicating that filling can effectively mitigate peak stress and enhance mining safety. Based on these numerical results, a mapping scheme for the stress disturbance path for laboratory testing has been established, providing a preliminary foundation for the experimental investigation of the mechanical response of coal-rock under looped fluidized mining conditions.

Key words： mining engineering fluidized mining looped mining mode mining-induced stress stress disturbance path

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	Articles by authors
	LI Danli1
	LIU Jianfeng1*
	WEI Jinbing1
	TANG Yifang1
	YUAN Honghao1
	PENG Ruidong2

Cite this article:

LI Danli1,LIU Jianfeng1*,WEI Jinbing1, et al. Mining-induced stress evolution under the simulated looped mining mode of fluidized mining[J]. , 2026, 45(10): 3065-3080.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2026.0030 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I10/3065

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