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太行山山前断裂位于太行山脉与华北平原过渡地带,是华北及我国东部地区一条重要的构造带,有关该断裂带的活动性有以下观点:1)它属深大断裂带;2)它是活动断裂带和地震构造带;3)它不是地震构造带。。为研究和评价该断裂的活动性,利用最近获得的地震资料和钻探联合剖面研究了太行山山前断裂的深部构造背景和第四系以来的活动特征。钻探验证以及研究结果与表明:太行山山前断裂不是岩石圈深大断裂,该断裂在第四系仅错断了中更新世QP2早期,中更新世QP2晚期和晚更新世地层没有发生错断。由此得出,太行山山前断裂不是活动断裂,也不是岩石圈深大断裂。该研究结果为跨越太行山山前断裂的城市进行规划和建设提供了重要的地质和地球物理资料,对于首都圈地震危险性评价也具有十分重要的意义。
The Taihangshan piedmont fault is located in the transition zone between the Taihang Mountains and the North China Plain and is an important tectonic zone in North China and the eastern part of China. The activities of the fault zone are as follows: 1) It is a deep fault zone; 2) It is an active Fault zone and seismic zone; 3) it is not an earthquake zone. . In order to study and evaluate the activity of the fault, we have studied the deep tectonic setting of the Taihangshan piedmont fault and the characteristics of the activity since the Quaternary by using the recently acquired seismic data and the united drilling profile. Drilling verification and research results show that the Taihangshan piedmont fault was not a deep lithospheric fault, and the fault did not break the QP2 during the Middle Pleistocene in the Quaternary. In the mid-late QP2 and Late Pleistocene strata, no fault occurred. It is concluded that the Taihangshan piedmont fault is neither an active fault nor a deep lithospheric fault. The results of this study provide important geophysical and geophysical data for the planning and construction of cities across the Taihangshan piedmont fault, and are of great significance to the seismic risk assessment of the metropolitan area.