Gold Science and Technology

Research on the Dynamic Mechanical Response Characteristics of Surroun-ding Rock During Mining in a Mine Based on the Discrete Element Method

Jiadong QIU, Rui HUANG, Lixia SONG, Zhonghua ZHU

Gold Science and Technology, 2025, 33(5): 996-1008. DOI: 10.11872/j.issn.1005-2518.2025.05.378

材料	抗压强度/MPa		弹性模量/GPa		泊松比
材料	试验结果	数值结果	试验结果	数值结果	试验结果	数值结果
围岩	62.90	65.3	13.70	14.50	0.21	0.22
矿体	42.60	44.1	9.20	10.00	0.25	0.28
破碎体	5.45	-	6.16	-	0.32	-
注浆后破碎体	32.40	31.0	35.97	35.18	0.203	0.21

Table 1 Macroscopic mechanical parameters of rock mass materials

Other figure/table from this article

Fig. 1 Simplified schematic diagram of deep stope
Fig. 2 Schematic diagram of basic composition of rock mass
Fig. 3 3D numerical model diagrams of deep stope
Table 2 Micro-mechanical parameters of numerical rock mass
Fig. 4 Internal blasting principle of PFC^3D
Fig. 5 Stress waves generated by micro-unit explosive blasting（diameter of the blaste hole is 65 mm）
Fig. 6 Propagation diagram of blast stress wave
Fig. 7 Propagation cloud maps of blasting stress wave for first row
Fig. 8 Propagation cloud maps of blast stress wave from second row to fifth row
Fig. 9 Layout diagrams of monitoring points
Fig. 10 Typical vibration curves
Fig. 11 Schematic distribution of peak vibration velocity（PPV） at different relative positions
Fig. 12 Comparison of maximum PPV of different row spacing
Fig. 13 Displacement cloud diagram of typical model
Fig. 14 Damage of surrounding rock after blasting
Fig. 15 Damage and failure of surrounding rock in goaf