Radial Pressure Characteristics on Borehole Walls at Decoupled Charge Blasting
文献类型：期刊论文
| 作者 | Li, Qiyue3; Li, Haiqian1,3; Li, Xibing3; Li, Jun1; Liu, Kai3; Wei, Xinao3; Peng, Kang3; Wu, Chengqing1,2 |
| 刊名 | ROCK MECHANICS AND ROCK ENGINEERING
 |
| 出版日期 | 2024-12-03 |
| 页码 | 16 |
| 关键词 | Borehole wall pressure Decoupled coefficient Field test Measurement system Numerical simulation |
| ISSN号 | 0723-2632 |
| DOI | 10.1007/s00603-024-04293-8 |
| 英文摘要 | Decoupled charging explosion has become widely used in contour blasting due to its lower peak pressure and longer load duration, significantly affecting contour blasting effects. This study examines a decoupled charging test in three drilling boreholes with different diameters at a mine site. A self-developed polyvinylidene difluoride (PVDF) testing system was employed to directly measure the borehole wall pressure (BWP). A numerical model was established and validated by using pressure data on the borehole walls from the decoupled charging test. Both experiments and simulations revealed that the peak BWP and the loading rate of the air shock wave were negatively correlated with the decoupled coefficient (defined as the ratio of blasting hole diameter to charge diameter). The pressure amplification factor initially increased and then decreased, with variation between decoupled coefficients of 1.18 and 3.44, and the highest-pressure transfer coefficient of emulsion explosives varied from 1.56 to 2.18. The findings in this study offer promising avenues for effectively controlling the excavation of rock mass in mining and civil engineering applications. |
| 资助项目 | Key Technologies Research and Development Program[52474163] ; Chinese National Science Foundation[2023YFC2907400] ; National Key R&D Program of China[2023XQLH175] ; Fundamental Research Funds for the Central Universities of Central South University[202206370107] ; China Scholarship Council |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001368828000001 |
| 出版者 | SPRINGER WIEN |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43345]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Haiqian |
| 作者单位 | 1.Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia 2.Chinese Acad Sci, Inst Rock & Soil Mech, Wuhan 430071, Peoples R China 3.Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qiyue,Li, Haiqian,Li, Xibing,et al. Radial Pressure Characteristics on Borehole Walls at Decoupled Charge Blasting[J]. ROCK MECHANICS AND ROCK ENGINEERING,2024:16. |
| APA | Li, Qiyue.,Li, Haiqian.,Li, Xibing.,Li, Jun.,Liu, Kai.,...&Wu, Chengqing.(2024).Radial Pressure Characteristics on Borehole Walls at Decoupled Charge Blasting.ROCK MECHANICS AND ROCK ENGINEERING,16. |
| MLA | Li, Qiyue,et al."Radial Pressure Characteristics on Borehole Walls at Decoupled Charge Blasting".ROCK MECHANICS AND ROCK ENGINEERING (2024):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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