Influence of Decoupled Charge Structure and Filler on the Blasting Effect
This study compared models of specimens with different filler media and decoupled charge structures in terms of the blasting effect. The test system combined a high-speed camera and high-speed static strain test analyzer. A physical model of a concrete single-borehole decoupled charge structure was...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2020/8866449 |
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| _version_ | 1832550814084759552 |
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| author | Yiping Zhang Yi Luo Sipeng Wan Yingxiang Tian Huanchao Ding Xiaoxiao Zhang Chengcheng Fang Yuyao Zhang |
| author_facet | Yiping Zhang Yi Luo Sipeng Wan Yingxiang Tian Huanchao Ding Xiaoxiao Zhang Chengcheng Fang Yuyao Zhang |
| author_sort | Yiping Zhang |
| collection | DOAJ |
| description | This study compared models of specimens with different filler media and decoupled charge structures in terms of the blasting effect. The test system combined a high-speed camera and high-speed static strain test analyzer. A physical model of a concrete single-borehole decoupled charge structure was designed to study the geometric elements of the blasting funnel, flyrock launch velocity, peak strain values, and distribution of the gravel lumpiness. The experimental results showed that for the same decoupling coefficient, when expandable polystyrene foam (EPS) was used as the filling medium, the radius, depth, and volume of the blasting funnel of the model specimen were larger, the flyrock launch velocity was slower, the peak stress of the specimen was higher, and the distribution of gravel lumpiness was more even. The relationship between the experimental index and the decoupling coefficient follows the changing trend of first increasing and then decreasing or first decreasing and then increasing. With air and EPS as the filling media, the concrete model specimens could achieve optimal blasting effects at decoupling coefficients of 1.83 and 1.69, respectively. The results confirm the feasibility and practicability of using EPS as a filler and can provide guidance and an experimental basis for the selection of the decoupling coefficient and filling medium in blasting engineering. |
| format | Article |
| id | doaj-art-0fc7fbfc1a634062b5c28b0541571afd |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-0fc7fbfc1a634062b5c28b0541571afd2025-02-03T06:05:41ZengWileyShock and Vibration1070-96221875-92032020-01-01202010.1155/2020/88664498866449Influence of Decoupled Charge Structure and Filler on the Blasting EffectYiping Zhang0Yi Luo1Sipeng Wan2Yingxiang Tian3Huanchao Ding4Xiaoxiao Zhang5Chengcheng Fang6Yuyao Zhang7College of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaCollege of Mining, Guizhou University, Guiyang, Guizhou 550025, ChinaThis study compared models of specimens with different filler media and decoupled charge structures in terms of the blasting effect. The test system combined a high-speed camera and high-speed static strain test analyzer. A physical model of a concrete single-borehole decoupled charge structure was designed to study the geometric elements of the blasting funnel, flyrock launch velocity, peak strain values, and distribution of the gravel lumpiness. The experimental results showed that for the same decoupling coefficient, when expandable polystyrene foam (EPS) was used as the filling medium, the radius, depth, and volume of the blasting funnel of the model specimen were larger, the flyrock launch velocity was slower, the peak stress of the specimen was higher, and the distribution of gravel lumpiness was more even. The relationship between the experimental index and the decoupling coefficient follows the changing trend of first increasing and then decreasing or first decreasing and then increasing. With air and EPS as the filling media, the concrete model specimens could achieve optimal blasting effects at decoupling coefficients of 1.83 and 1.69, respectively. The results confirm the feasibility and practicability of using EPS as a filler and can provide guidance and an experimental basis for the selection of the decoupling coefficient and filling medium in blasting engineering.http://dx.doi.org/10.1155/2020/8866449 |
| spellingShingle | Yiping Zhang Yi Luo Sipeng Wan Yingxiang Tian Huanchao Ding Xiaoxiao Zhang Chengcheng Fang Yuyao Zhang Influence of Decoupled Charge Structure and Filler on the Blasting Effect Shock and Vibration |
| title | Influence of Decoupled Charge Structure and Filler on the Blasting Effect |
| title_full | Influence of Decoupled Charge Structure and Filler on the Blasting Effect |
| title_fullStr | Influence of Decoupled Charge Structure and Filler on the Blasting Effect |
| title_full_unstemmed | Influence of Decoupled Charge Structure and Filler on the Blasting Effect |
| title_short | Influence of Decoupled Charge Structure and Filler on the Blasting Effect |
| title_sort | influence of decoupled charge structure and filler on the blasting effect |
| url | http://dx.doi.org/10.1155/2020/8866449 |
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