Abstract: Processing of data,obtained from repeated measurements of ground deformation by use of the Beijing Ⅰ-triangulation network during 1966 and 1976—1980,was conducted to relate the characteristics of lateral component of the deformation field in this area to the regional structures.In terms of extensional tectonics,generation of compression-deformed zones may be accounted for,such as 1) Both the Babaoshan and Xiadian fault zones are dominant and the boundaries between the extensional tectonic elements; 2) Compression-deformed zones close to the fault zones are likely to be associated with the tilting motion of the fault blocks; and; 3) NW—NNW—trending fault(Nankou-Sunhe) is a transform strike-slip fault in this area.

摘要： 本文重新处理了1976—1980年用激光测距对北京地区的一等三角网进行复测所得到的资料。在此基础上分析研究了北京地区水平形变场的特征,结合地震地质资料讨论了它在构造上的含义。文章主要用伸展构造的观点解释了北京地区几个压应变带形成的原因和可能的活动机制。