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依据“固定半径法”的定义及原理，对1976年黑山、砣矾震群的时间结构的广义维数Dq-q和标度指数谱f（α）-α曲线的特征进行了初步研究。结果表明二次前兆震群表现出各自的特征，即砣 震群地震时间多分形结果出现剧变型异常，其表征为q为负值时Dq增大，q为正值时Dq减小且变化幅度大。与此同时，f（α）两端下降，α跨度也较大。而黑山震群地震时间多分形结构没有出现明显异常，Dq-q曲线平缓，f（α）-α谱曲线跨度较小。对两者差异的原因进行了讨论。
According to the definition and principle of “fixed radius method”, the characteristics of the generalized dimension Dq-q and the scale index spectrum f (α) -α curve of the time structure of Montenegro and the alum earthquake swarm in 1976 were studied. The results show that the secondary precursory swarm shows their own characteristics, ie, the epicenter of the epicenter swarm earthquake shows a drastic anomaly, the characterization of which is that when q is negative, Dq increases and when q is positive, Dq decreases and the magnitude of change Big. At the same time, f (α) decreases at both ends and the α-span is also larger. However, the multi-fractal structure of the earthquake population in Montenegro earthquake swarm did not show obvious abnormalities. The Dq-q curve is gentle and the curve span of f (α) -α spectrum is small. The reasons for the difference between the two are discussed.