本文通过浅层地震勘探、工程地质钻探和探槽工程等技术手段对延庆盆地北缘断裂几何结构、活动年代、活动性状进行了研究。结果表明:断裂自姚家营至张山营段断层结构由5条断面逐渐收敛为2条,受边界条件制约其几何结构趋于简单。断裂距今7万年来存在三期主要活动,自晚更新世末期以来断裂活动强度明显趋缓。 In this paper, the fracture geometry, activities and activities of the northern margin of Yanqing Basin are studied by means of shallow seismic exploration, engineering geological drilling and trench engineering. The results show that the fault structure from Yaojiaying to Zhangshanying section converges gradually from 5 sections to 2 sections, and its geometric structure is restrained by the boundary conditions. Since the last 70,000 years there have been three main faults, the intensity of fault activity has slowed down since the late Pleistocene.