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根据声-地震耦合原理,分析地震波与地雷的机械作用,并设计一个基于地震检波器串的探雷实验系统。把高顺性雷体与其上方的土壤视作一个质量-弹簧系统,用解析法分析其谐振机理。采用扬声器发出可扫频的单音正弦波穿透到地下土壤,作为系统信号激励源,采用地震检波器串测出地表震动速度。根据有无地雷处的地表震动速度幅频特性曲线,分析地雷对地表震动的影响。实验结果显示,地雷上方的地表震动速度要明显高于没有地雷的情况,该系统可用于声波探雷的进一步研究。
According to the principle of acoustic-seismic coupling, the mechanical action of seismic wave and mine is analyzed, and a mine detection system based on geophone string is designed. The high-cis-ray and the soil above it are considered as a mass-spring system, and its resonance mechanism is analyzed analytically. The use of speakers to issue a sweepable single-tone sine wave penetrates into the underground soil, as a system signal excitation source, the use of geophone string measured surface vibration velocity. According to the amplitude and frequency characteristics of the surface vibration velocity at the mine site, the impact of the mine on the surface vibration is analyzed. The experimental results show that the surface vibration velocity above the mine is obviously higher than that without the mine. This system can be used for further study of the sounding mine.