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本文通过对两期二等三角网测量结果的计算,分析了沂沭裂谷附近—鲁中鲁南的应变状态,力学性质和最近二十年来地壳的水平运动.结果是:(1)该区水平应变场的平均参数为:主压应变轴是 N51°E;最大剪应变的方向为 N6°E 和 N84°W;从而得出该区应变场的力学模型;(2)该区地壳水平形变的特征是:以灌云—临沂—曲阜为转换带的典型左旋图象.从而讨论了鲁中、南未来可能发震的危险部位.
In this paper, we calculate the strain state, mechanical property and horizontal crustal movement in the vicinity of Yishu Rift - Lushan Lunnan through the calculation of the second-phase triangulation results of two triangles.The results are as follows: (1) The average parameters of the horizontal strain field are: the principal compressive strain axis is N51 ° E; the direction of the maximum shear strain is N6 ° E and N84 ° W; the mechanical model of the strain field in this region is obtained; (2) Is characterized by a typical left-handed image with Guanyun-Linyi-Qufu transition zone, so as to discuss the dangerous parts of the possible future earthquakes in Luzhong and South China.