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Section layout of the ore body.

Section layout of the ore body.

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Figure 1. Stress wave curve with time.
Figure 2. Schematic diagram of blasting principle.
Figure 3. Blasting effects of concentrated blasting points.
Figure 4. Transmission boundary diagram.
+14 Figure 5. Section layout of ore body.
Energy Transfer and Damage Evolution Process Research of Ore Rock-Filling Body under the Blasting Load
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  • Oct 2022
The low intensity and frequent blasting shock wave created by a blasting impact will exert notable destructive effects on an ore rock-filling body. In order to investigate the energy transfer process of the blasting shock wave energy in the filling body and the damage evolution process of the filling body, the software PFC2D was used to numerically...
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Context 1
... the ore body section layout in the discrete element model is displayed in Figure 6. The parameters of the filling body and the ore body and the parameters of the blasting holes are exhibited in Tables 1-5, respectively. ...

Citations

... Dynamiting is the main method for exploitation in metal mines [1]. In the process of exploiting metal ore by using the two-step open stoping method with subsequent filling, the shock generated by blasting in the second step has a great impact on the filling body of the first step [2]. Once the energy transmitted by the shock exceeds the limit of the energy that the filling body can absorb and conditions for release are present, the filling body is destroyed. ...
Dynamic Loading Characteristics of Cemented Paste Backfill with Recycled Rubber
Article
Full-text available
  • May 2024
The purpose of this study was to investigate the effect of the use of rubber powder from tire recovery on the dynamic loading performance of CPB. Finally, it is concluded that using recycled rubber material to backfill mine paste is helpful in reducing waste tire pollution and improving the impact resistance of the backfill body. The dynamic compressive strength, Dynamic Increase Factor (DIF), peak dynamic load strain, and dynamic load elastic modulus of the samples composed of slag, Portland cement, wastewater, and rubber powder were determined. Through the analysis of the experimental data, it can be seen that the recycled rubber reduces the dynamic compressive strength and DIF of the specimen but increases the peak dynamic load strain and dynamic load elastic modulus and other characteristics, and enhances the ability of the filled body to absorb elastic strain energy. The results show that recycled rubber can increase the deformation ability of the filler and improve the impact resistance of the filler. The results of this study provide valuable information and industrial applications for the effective management of solid waste based on sustainable development and the circular economy.
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