| 王驰,丁卫,沈高炜,周瑜秋,吴文雯.地雷埋藏深度对声波激发的地表振动影响的实验研究[J].声学技术,2013,32(4):263~267 |
| 地雷埋藏深度对声波激发的地表振动影响的实验研究 |
| Experimental study of the influence of the mine burial depth on the acoustically induced ground vibration |
| 投稿时间：2012-05-12 修订日期：2012-08-30 |
| DOI：10.3969/j.issn1000-3630.2013.04.001 |
| 中文关键词: 声-地震耦合 地雷探测 声共振 |
| 英文关键词: acoustic-to-seismic coupling mine detection acoustic resonance |
| 基金项目:国家自然科学基金(41104065)资助项目 |
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| 中文摘要: |
| 构建实验系统,研究地雷埋藏深度对声波激发的地表振动的影响。首先,简述声-地震耦合及其在地雷探测应用中的基本原理;其次,描述声波探雷实验系统及实验方案;最后,检测在没有埋藏物以及地雷埋藏深度在9 cm、11 cm和13 cm时声波激发的地表振动速度的幅频特性曲线。实验结果显示,有雷和无雷的地表振动速度比值的幅频特性曲线在120、210、420、450、550 Hz存在明显大于1的极大值点,显示出土壤-地雷系统多模态共振的特征,而且共振强度随着埋藏深度的增加而减弱。 |
| 英文摘要: |
| An experimental system is presented to investigate the influence of the mine burial depth on the acoustically induced ground vibration. Firstly, the mechanism of acoustic-to-seismic coupling is overviewed together with its application in buried mines detection. Then, the experimental system and scheme for acoustic mine detection are described. Finally, the amplitude-frequency characteristic curves of the ground vibration velocity are plotted for nothing buried and for mine buried at the depth of 9 cm, 11cm and 13 cm respectively. The results indicate that the amplitude-frequency curves of the ratios of the ground vibration velocities with to without mine have maximal values greater than 1 at 120 Hz, 210 Hz, 420 Hz, 450 Hz and 550 Hz respectively, which reveal the characteristic of multi-modal resonance, however, the characteristic becomes weak as the mine burial depth increases. |
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