CAJ | 학술논문

设计一个基于地震检波器串的地表振动测量实验系统，分析声-地震耦合现象对地表振动速度的影响机理。采用大功率音箱作为信号源，发出单频可调的声波耦合到地下；在土层深度、功放增益以及音箱喇叭高度一定的情况下，采用地震检波器串测量地表振动速度，并对其进行功率谱分析。实验表明，功率谱幅值曲线在147Hz和170Hz出现固定峰值，符合相长干涉原理。该系统满足测试要求，可用于声-地震耦合现象及声波探雷实验的进一步研究。
설계일개기우지진검파기천적지표진동측량실험계통，분석성-지진우합현상대지표진동속도적영향궤리。채용대공솔음상작위신호원，발출단빈가조적성파우합도지하；재토층심도、공방증익이급음상나팔고도일정적정황하，채용지진검파기천측량지표진동속도，병대기진행공솔보분석。실험표명，공솔보폭치곡선재147Hz화170Hz출현고정봉치，부합상장간섭원리。해계통만족측시요구，가용우성-지진우합현상급성파탐뢰실험적진일보연구。
A geophone - array based ground vibration measuring system has been developed to analyze the interaction mech- anism between the acoustic - to - seismic coupling and the ground vibration velocity. The system used a high - power loud- speaker as the signal source to emit single and changeable tone to couple into the ground. Given the ground layer depth, amplifier gain and loudspeaker height, geophone - array was used to measure the ground vibration velocity and the magni- tude spectra curve. The results show that there are peak values at the frequency of 147 Hz and 170 Hz respectively, which is in agreement with the phase - interference principle. The proposed system meets the test requirement and can be used for the further investigation of acoustic - to - seismic coupling and acoustic mines detection.