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本文通过钻孔地层对比方法研究了顺义 -良乡断裂北段的第四纪活动性 ,资料显示该断裂在第四纪期间呈现强弱交替的分期活动特征 ,距今 315万年以来有 3个较强活动期和 3个较弱活动期 ,前三者分别距今 2 6 6～ 315、171～ 2 2 8、73～ 14 7万年 ,后三者距今分别为 2 2 8～ 2 6 6、14 7～ 171、0～ 73万年。中更新世晚期以来断裂活动不明显。超量开采地下水导致地面不均匀沉降是造成顺义地裂缝现今活动的主要原因。
In this paper, the Quaternary activity of the northern segment of Shunyi-Liangxiang fault was studied by contrasting drilling strata. The data show that the fault showed the characteristics of staged activity with strong and weak alternations during the Quaternary, Strong activity period and 3 weaker activity period, respectively, the former three were 266 ~ 315,171 ~ 228,273 ~ 147,000 respectively, the latter three were 2 28 ~ 26 6,14 7 ~ 171,0 ~ 73 million years. The activity of cleavage was not obvious since the late Middle Pleistocene. Over-exploitation of groundwater leading to uneven ground settlement is the main reason for the current activities of Shunyi Ground Fissure.