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依据实地测量的褶皱、断裂等地质构造资料,深入的阐述了大伙房输水工程Ⅰ洞线所在区的地质构造特征——多期次、复杂、多样的构造格局,规模较大的褶皱构造为发育在辽河群大石桥组(Pt1d)和盖县组(Pt1gx)的三道河子复式向斜和燕山期木奇—榆树—铧尖子向斜,85km长度内较大的断层有26条,为辽河期和燕山期断裂,本文试用“板块”与“微板块”理论解释位于华北地台东北边缘的大伙房输水工程Ⅰ洞线区的构造演化历史进程,以期为今后工程的实施提供参考。
Based on the data of the geologic structures such as fold and fracture measured in the field, the geotectonic characteristics of the area where the line-Ⅰ is located in Dahuofang water conveyance project are described in detail: the multi-period, complex and diverse tectonic structures, and the larger fold structures are It developed in the Sandahezi syncline and the Yushanian woodchuic-elm-Huajian apex syncline of the Dashiqiao Formation (Pt1d) and Gaixian Formation (Pt1gx) in the Liaohe Group. There are 26 large faults within 85km in length, which are Liaohe and Yanshanian fractures, this paper attempts to explain the tectonic evolution history of the first line of Dahuofang water conveyance project located on the northeastern edge of North China platform with the theory of “plate” and “microplate”, in order to provide reference for the future project implementation.