| 爆炸波在高饱和度饱和土中传播规律的研究 |
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| 引用本文： | 穆朝民,任辉启,李永池,辛凯. 爆炸波在高饱和度饱和土中传播规律的研究[J]. 岩土力学, 2010, 31(3): 875-880 |
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| 作者姓名： | 穆朝民 任辉启 李永池 辛凯 |
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| 作者单位： | 1. 安徽理工大学 能源与安全学院，淮南 232001；2.煤矿安全高效开采省部共建教育部重点实验室，淮南 232001； 3. 中国科学技术大学 近代力学系，合肥 230026；4. 总参工程兵科研三所，洛阳 471023 |
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| 基金项目： | 国家自然科学基金重点项目，国家自然基金 |
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| 摘 要： | 通过在? 2.5×5 m模拟爆炸装置中进行饱和土爆炸试验，得到了变埋深条件下饱和土中的压力实测波形，实测到了冲击波和弹性波，二者之间具有较明显的分界，爆炸近区和远区荷载形式具有较大的区别。通过综合分析给出了饱和土中波的传播规律，揭示饱和土中爆炸冲击波传播时出现流体动力区和冲击波形成等性质，建立了饱和土双线性递增硬化本构关系，确定了由冲击波向弹性波转换的分界压力。
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| 关 键 词： | 爆炸力学 饱和土 爆炸冲击波 本构关系 |
| 收稿时间： | 2008-11-27 |
Propagation laws of blast wave in saturated soils with high saturation degree |
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| MU Chao-min,REN Hui-qi,LI Yong-chi,XIN Kai. Propagation laws of blast wave in saturated soils with high saturation degree[J]. Rock and Soil Mechanics, 2010, 31(3): 875-880 |
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| Authors: | MU Chao-min REN Hui-qi LI Yong-chi XIN Kai |
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| Affiliation: | 1. School of Energy Resources and Safety, Anhui University of Science and Technology, Huainan 232001, China; 2. Key Lab of Mining Coal Safety and Efficient Constructed by Anhui Province and Ministry of Education, Huainan 232001, China; 3. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China; 4. The Third Research Institute of the Corps of Engineering, General Staff of CPLA, Luoyang 470123, China |
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| Abstract: | An experiment of the explosion wave propagation in saturated soils is accomplished in the ? 2.5×5 m pothole. Measured pressure waveforms in different burial depths are gained in the saturated soils. The loads of the shock wave and the elastic wave are measured in the experiment. The boundary is obviously different between the shock wave and the elastic wave. A comprehensive analysis shows that the saturated soil has the nature of liquid-dynamic area appearing and the shock wave forming when the blast wave spreads in saturated soils. The bilinear progressively increasing-hardening constitutive relation in saturated soils is established. Dividing pressure is determined when the shock wave changes into the elastic wave. |
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| Keywords: | mechanics of explosion saturated soil blast shock wave constitutive relation |
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