大伙房水库输水工程Ⅰ洞线测区地质构造特征

geologic structure characteristics of dahuofang water conveyance tunnel-Ⅰarea

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 field surveying data of fold, fault and other geologic structures, this thesis expounds the geologic structure characteristics of Dahuofang water conveyance tunnel-Ⅰ area, which has a multiple terms, complicated and manifold framework.The folds which developed in large scale in Dshiqiao team(Pt1d) and Gaixian team(Pt1gx)of Liaohe group are mnltsyncline and Muqi-Yushu-Huajianzi syncline of Yanshan term.In 85Km instance,there are 26 faults which developed in Liaohe and Yanshan term. The writer tries to define, using plate and microplate theory, the evolution process of this area where the north-east skirt of the Huabei platform for the reference of coming execution.