隐伏振动源的地震定位技术
Earthquake Location Technology for Hidden Vibrating Source
冯凡 1苏荣华 2刘劲松 1张春贺 3郭玉胜 4范建国 5王赟1
作者信息
- 1. 中国地质大学"多波多分量"地震研究组,北京 100083
- 2. 军事科学院国防工程研究院,北京 100850
- 3. 中国地质调查局油气资源调查中心,北京 100083
- 4. 北京自动化控制设备研究所,北京 100074
- 5. 山东能源集团有限公司,山东 济南 250014
- 折叠
摘要
隐伏目标探测是军事防护的重点之一,但是难以借助常规的光学或图像技术实现.针对这一问题,本文首先回溯和总结地震定位技术的发展和应用,展示了地震方法在隐伏振动目标探测和定位上具有显著的优势;然后利用中国柴达木盆地西部采集的微地震资料,采用非线性定位法和双差法对微地震事件进行了定位.最终结果表明:1)与非线性定位方法相比,重定位的微震震源分布得更集中,震群之间的边界更清晰,与已知的断裂构造相符;2)重定位的误差降低了一个量级,绝大多数地震事件经过非线性定位后的水平和深度误差在1 000 m以内,而双差法的误差则控制在100 m以内.该实例证实了利用地震定位技术探测隐伏振动目标的可行性.
Abstract
Hidden target detection and location is one of the key points of military protection engineering,but it is difficult to realize with conventional optical or imaging technologies.In response to this problem,this article first reviews and summarizes the development and ap-plication of earthquake location technology,which shows that seismology methods also have significant advantages in detecting and locating hidden vibration targets.Then,using the mi-croseismic data collected from the western Qaidam Basin in China,the microseisms were lo-cated by nonlinear location method and double-difference method.The results indicate that:1)Compared with the nonlinear location method,the double-difference method results in a more concentrated distribution of microseisms and clearer boundaries between microseismic clusters,which are more consistent with known fault structures;2)The error of relocation has been reduced by an order of magnitude,and the horizontal and depth errors of most mi-croseisms after nonlinear location are within 1000m,while the error of double-difference method is controlled within 100 m.The study confirms the feasibility of using seismic posi-tioning technology to detect hidden vibration targets.
关键词
隐伏目标/地震定位/双差法/微震/柴达木盆地Key words
hidden targets/earthquake location/double-difference method/microseism/Qai-dam Basin引用本文复制引用
基金项目
国家自然基金项目(42150201)
国家自然基金项目(62127815)
贵州省省级科技计划项目(黔科合基础-ZK[2023]重点053)
出版年
2024
NETL
NSTL
万方数据