CAJ | 학술논문

为了深入理解某矿爆破地震波衰减规律，在确定该矿爆破振动信号最佳小波基与阈值函数的基础上，对所测源信号及去噪信号进行萨道夫斯基公式线性拟合并比较分析。结果表明，该矿爆破振动信号的最佳小波基为sym7函数，去噪效果最佳为rigrsure阈值函数；去噪后的爆破振动信号衰减系数k、a值反映该矿岩体强度性质比原始数据的k、a值更为准确，为该矿爆破安全设计提供理论依据。
위료심입리해모광폭파지진파쇠감규률，재학정해광폭파진동신호최가소파기여역치함수적기출상，대소측원신호급거조신호진행살도부사기공식선성의합병비교분석。결과표명，해광폭파진동신호적최가소파기위sym7함수，거조효과최가위rigrsure역치함수；거조후적폭파진동신호쇠감계수k、a치반영해광암체강도성질비원시수거적k、a치경위준학，위해광폭파안전설계제공이론의거。
To better understand mine blasting seismic wave attenuation rule, this paper makes the original signal and noise signal measured on SaDaoFu linear matching for analysis based on determining the mine blasting vibration signal best wavelet base and threshold function. The results show that: blasting vibration signal for the best wavelet base is sym7 function; the optimal denoising effect is rigrsure threshold function. After denoising, it is more accurate to know the mine rock mass strength properties from blasting vibration signal attenuation coefficient k, a value compared with the original data. The research can provide theoretical basis for the mine blasting safety design.