利用新丰江现有三角测量资料,计算了自1964年以来的四级以上各强余震前后的应变场。并用5.3级地震的应变场图解求解震源附近的两条断裂方向上的应变量及其断裂力学特征图解模型。计算结果表明:5.3级地震有较好的反应,并与测震机制解较一致,而四级左右的地震应变量与测量精度不相上下,图解模型得出,北北西向断裂方向上的应变量大于北北东向断裂约一倍,北北西向断裂当时的运动特征是以压性为主的右旋错动,而北北东向断裂是受张的左旋错动。 Based on the existing triangulation data of Xinfeng River, the strain field before and after each strong aftershock above the fourth grade since 1964 was calculated. The strain field diagram of the 5.3-magnitude earthquake was used to solve the two fracture directions in the vicinity of the hypocenter. The results show that the M5.3 earthquakes have a good response and are consistent with the seismogenic mechanism solutions. However, the seismic strain and quasi- The variable is about twice as large as the north-north eastward fault. The north-north-west fault movement at the time was characterized by the dextral dextral movement that is mainly compressive, while the north-north eastward fault was affected by the leftward depolarization.