Experiment Study of Stemming Length and Stemming Material Impact on Rock Fragmentation and Dynamic Strain
Abstract
:1. Introduction
2. Experimental Design and Method
2.1. Experimental Design
2.1.1. Mortar Test Block and Explosive Properties
2.1.2. Experimental Design
2.2. Evaluation Method
2.2.1. Fragment Size Analysis Method
- Total Weight
- 2.
- Mean Fragment Size
- 3.
- Fractal Dimension
2.2.2. Blasting Crater Size and Recoil Range
- Blasting Crater Area and Mean Radius
- 2.
- Recoil Range
2.2.3. Fragmentation Energy Consumption Utilization Rate
3. Experimental Results and Analysis
3.1. The Stemming Material Is Clay, Analyze the Stemming Length
3.1.1. Fragments, Crater Size, and Recoil Area
3.1.2. Dynamic Strain
3.2. The Stemming Length Is the Same, Analyze the Stemming Material
3.2.1. Fragments, Crater Size, and Recoil Area
3.2.2. Dynamic Strain
4. Discussion
4.1. Characteristic Impedance of Stemming Materials
4.2. Impact of Burden
4.3. Applications
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Test Order | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Burden W/(cm) | 6 | 5 | 4 | 6 | 5 | 4 | 5 | ||||||||
Clay length/(cm) | 0 | 2 | 4 | 6 | 0 | 2 | 4 | 5 | 0 | 2 | 4 | 2 | 2 | 2 | 2 |
Water length/(cm) | 4 | 3 | 2 | ||||||||||||
Sand length/(cm) | 3 |
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Shi, X.; Zhang, Z.; Qiu, X.; Luo, Z. Experiment Study of Stemming Length and Stemming Material Impact on Rock Fragmentation and Dynamic Strain. Sustainability 2023, 15, 13024. https://doi.org/10.3390/su151713024
Shi X, Zhang Z, Qiu X, Luo Z. Experiment Study of Stemming Length and Stemming Material Impact on Rock Fragmentation and Dynamic Strain. Sustainability. 2023; 15(17):13024. https://doi.org/10.3390/su151713024
Chicago/Turabian StyleShi, Xiuzhi, Zongguo Zhang, Xianyang Qiu, and Zhihua Luo. 2023. "Experiment Study of Stemming Length and Stemming Material Impact on Rock Fragmentation and Dynamic Strain" Sustainability 15, no. 17: 13024. https://doi.org/10.3390/su151713024