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本文采用北京——开滦——埕子口——济南——磁县——石家庄——北京—等三角锁环1951年至1954年和1960年至1966年两期重复测量结果,分析了华北北部地区的应变状态和形变规律。认为:(1)该三角锁环所包围的地区主压应力轴的优势分布为北东向,主张应力轴为北西向,这与区域构造应力场是一致的;(2)鲁中、南水平位移场与华北水平位移场是一个整体;从邢台——聊城——曲阜——临沂——灌云是一条北西向的水平位移转换带,作者推断,这是一条既受张又受剪十分活跃的隐伏构造带,它与北东向构造交汇的部位,应严重关注!(3)从资料证实,1976年7月28日唐山7.8级地震在1965年以前已经开始了应变能的积累。
In this paper, the repeated measurement results of the triangular lock ring of Beijing-Kailuan-Xiazikou-Jinan-Cixian-Shijiazhuang-Beijing-Beijing from 1951 to 1954 and from 1960 to 1966 were analyzed. Strain State and Deformation Law in Northern China. It is considered that: (1) the dominant distribution of the principal compressive stress axis in the area surrounded by the triangular locking ring is north-eastward, and the stress axis is in the northwest direction, which is consistent with the regional tectonic stress field; (2) The displacement field is a whole with the horizontal displacement field in North China. From Xingtai-Liaocheng-Qufu-Linyi-Guanyun is a horizontal shift belt in the northwest direction. The author concludes that this is an extremely active (3) From the data, it is confirmed that on July 28, 1976, the accumulation of strain energy has started before 1965 in Tangshan earthquake of magnitude 7.8.