| 爆破载荷下隧道围岩破坏裂隙范围研究 |
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| 引用本文： | 费鸿禄,苏强,蒋安俊,洪陈超.爆破载荷下隧道围岩破坏裂隙范围研究[J].爆破器材,2019,48(2):51-56. |
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| 作者姓名： | 费鸿禄 苏强 蒋安俊 洪陈超 |
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| 作者单位： | 辽宁工程技术大学爆破技术研究院 辽宁阜新,123000;辽宁工程技术大学爆破技术研究院 辽宁阜新,123000;辽宁工程技术大学爆破技术研究院 辽宁阜新,123000;辽宁工程技术大学爆破技术研究院 辽宁阜新,123000 |
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| 摘 要： |
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| 关 键 词： | 爆破载荷 冲击波 应力波 爆生气体 裂隙范围 |
Damage Fracture Range of Tunnel Surrounding Rock under Blasting Load |
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| FEI Honglu,SU Qiang,JIANG Anjun,HONG Chenchao.Damage Fracture Range of Tunnel Surrounding Rock under Blasting Load[J].Explosive Materials,2019,48(2):51-56. |
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| Authors: | FEI Honglu SU Qiang JIANG Anjun HONG Chenchao |
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| Affiliation: | Blasting Technology Research Institute, Liaoning Technical University (Liaoning Fuxin, 123000) |
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| Abstract: | In order to determine the fracture scope of rock mass under blasting load, Mohr-Coulomb strength crite-rion was used to determine the rock crushing zone under shock wave action. Fracture zone was calculated by Mises strength criterion considering crushing zone, change of stress wave attenuation exponent and three-dimensional stress state of rock. The two expansion range of rock fissure after blasting gas was calculated by using the fracture toughness of rock without considering the loss of explosive gas in the fracture zone formed by the stress wave. By comparing theoretical calculation with measured acoustic wave data at the scene, the former is smaller than the latter 8.45%. Analysis shows that the method for calculating the fissure area is reasonable and can estimate the fracture scope in similar working conditions. |
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| Keywords: | blasting load shock wave stress waves explosion gas fracture range |
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