Contribution of detonation gas to fracturing reach in rock blasting: insights from the combined finite-discrete element method
文献类型：期刊论文
| 作者 | Wang, Ben1,2; Li, Haibo1,2
|
| 刊名 | COMPUTATIONAL PARTICLE MECHANICS
 |
| 出版日期 | 2023-09-11 |
| 页码 | 17 |
| 关键词 | Rock blasting Detonation gas Finite-discrete element method Fracturing reach |
| ISSN号 | 2196-4378 |
| DOI | 10.1007/s40571-023-00645-3 |
| 英文摘要 | The action of the detonation gas can be considerably affected by the conditions under which the blast occurs. In order to achieve a more comprehensive understanding of the contribution of detonation gas to fracturing reach, the combined finite-discrete element method (FDEM) is performed to modelling rock blasting under three different circumstances: i. single-borehole blasting without free surface under different in situ stress, ii. single- and multi-borehole blasting with a nearby free surface, and iii. underground contour blasting. The results indicated that: (1) detonation gas contributes significantly to the fracturing reach in single-borehole blasting without free surface, but the pneumatic increase factor (PIF) decreases with the increase in isotropic in situ stress; (2) under anisotropic in situ stress, the contribution of detonation gas to the fracturing reach is significant in the direction of maximum principal pressure but negligible in the direction of minimum principal pressure; (3) the PIF of single-borehole blasting with a nearby free surface is even smaller than that of single-borehole blasting under the hydrostatic pressure of 40MPa, indicating that the nearby free surface weakens the contribution of detonation gas to fracturing reach; (4) due to multi-borehole interaction combined with free surface effect, detonation gas contributes little to the fracturing reach in muti-borehole blasting with a nearby free surface. (5) due to the combined effect of anisotropic in situ stress, free surface and muti-borehole interaction, the contribution of detonation gas to the excavation damage depth can be negligible in underground contour blasting. |
| 资助项目 | National Key R&D Program of China[2020YFA0711802] ; National Nature Science Foundation of China[U22A20239] ; Wuhan Science and Technology Bureau of China |
| WOS研究方向 | Mathematics ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001063160800001 |
| 出版者 | SPRINGER INT PUBL AG |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/39399]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Haibo |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ben,Li, Haibo. Contribution of detonation gas to fracturing reach in rock blasting: insights from the combined finite-discrete element method[J]. COMPUTATIONAL PARTICLE MECHANICS,2023:17. |
| APA | Wang, Ben,&Li, Haibo.(2023).Contribution of detonation gas to fracturing reach in rock blasting: insights from the combined finite-discrete element method.COMPUTATIONAL PARTICLE MECHANICS,17. |
| MLA | Wang, Ben,et al."Contribution of detonation gas to fracturing reach in rock blasting: insights from the combined finite-discrete element method".COMPUTATIONAL PARTICLE MECHANICS (2023):17. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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