断层活动习性和活动历史的准确认识是我们把握地震活动规律、评价地震危险性、降低地震灾害风险的重要基础。由于对第四纪地层的严重依赖，传统研究方法和鉴定技术在基岩区难以发挥作用。导致无法评价那些展布于基岩区的断层活动性，造成断层活动信息的缺失，甚至会遗漏地震灾害风险源。所以，探索基岩区断层活动性评价和鉴定技术，获取基岩区断层较准确的活动习性和地震活动历史是当前一个亟待解决的重要问题。本项目将选择山西地堑系为研究区，以主要活动断层上基岩河流裂点、基岩断层面和断层构造岩为研究对象，基于数值构造地貌学、宇宙成因核素测年、显微结构与组分特征分析和断层变形构造物理实验等既有技术手段和方法，深入探索基岩区断层活动性评价和古地震判定方法，构建基岩区断层活动性评价和鉴定技术体系，完善活动断层的研究体系和活动断层探测与评价的标准、规范。最后，构建山西地堑系断层活动图像并评价活动断层强震危险性。

Understanding the faulting behavior and history of an active fault is the cornerstone to grasp seismic activities, assess seismic hazards, and reduce earthquake disasters. The Traditional technique to study an active fault is mainly based on analyzing displaced Quaternary deposits. However, for active faults that developed in bedrock area without Quaternary stratigraphic markers, this method does not work. Because of lacking appropriate techniques, the activity of these faults in bedrock area cannot be evaluated, which results in a lot of important faulting information and even potential destructive earthquakes missed. Therefore, it is great urgent to develop a new evaluation and identification technique that can be used to constrain the faulting behavior and history of a fault in bedrock area. To develop this technique, we will focus our research in the Shanxi Graben System, and take fault-related bedrock river knickpoint, bedrock fault surface (cliff) as well as fault tectonite as the research objects, based on a suit of recent achievements in earth sciences including the numerical tectonic geomorphology, cosmogenic nuclide dating, and microstructure and composition characteristics analysis. We will then develop a systematic technique for activity evaluation and paleo-earthquake identification of bedrock faults, which would greatly compensate for current techniques, evaluation Standards and Norms related to the active fault detection and research. Finally, we will quantify the fault activities of main active faults in the Shanxi Graben System and further assess their seismic hazards.