【摘要】 爆破震动原始数据受噪声、干扰事件等影响,得到的传播规律公式精度有限.为此,提出在EEMD分解的基础上提取爆破震动主震数据,以此进行分析,提高公式的准确性.基于某矿实测爆破震动数据,分别对原始数据和主震数据进行线性回归获取传播规律公式,并进行验证,结果表明,主震数据相关系数R更大,受噪声和干扰事件影响小,短距离传播时,其规律性公式预测更为准确.更多还原

【Abstract】 Raw data of blasting vibration under the influence of noise and interference events, limits the accuracy of propagation formula. Thus, analysis of main vibration datum extracting from the EEMD decomposition is carried out to improve the accuracy of formulas. According to the collected field data of blasting vibration in a mine, linear regression is conducted to the original datum and main vibration datum to gain formula of propagation law, then the results are obtained after verifying which show that as the correlation coefficient of main vibration is larger, the noise and interference events do little affection to the formula, and its formula is more precise when distance propagation is short.更多还原