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通过对博罗可努断裂精河—阿拉山口段微地貌的实地调查 ,发现该断裂错断精河东南到阿拉山口之间的晚更新世冲洪积扇 ,地表留下了冲沟和山脊同步右旋位错、断层陡坎、断层鼓包、拉分盆地等与断层活动有关的微地貌。精河东南冲洪积扇上大冲沟的最大右旋位移为 50 0m ,平均4 0 0m。断层陡坎上的纹沟右旋位移为 2 6～ 4 0m ,较大级别的纹沟位移可分为 5 7m ,8 3m和 15 3m3组。它们大致为 3的整数倍。实测断层陡坎的高度分别为 1 2m ,2 51m和 3 6 3m ,大致是 1 2的整数倍 ,阿拉山口西南断层的水平位移为 1～ 1 7m ;垂直位移可分为两组 ,一组为 0 55m ,另一组为 1 2～ 1 5m。这些数据可能揭示了该断裂段的特征地震水平位移为 3m ,垂直位移为 1 2m。区域地貌对比和年代学分析得出 ,精河东南冲洪积扇的最后形成时代为距今 7万a左右 ,右旋滑动速率为4 7mm/a。
A field survey of the microfacies of the Jinghe-Alashankou section of the Borokhonui fault found that the fault had severed late-Pleistocene alluvial fans between southeast and Alashankou of the Jinghe River, leaving the gully and ridge synchronous Dextral dislocations, fault scarps, fault drums, pull the sub-basin and fault activity-related micro-topography. The maximum dextral displacement of the upper gully in the southeast of Jinghe alluvial fan is 50 0m with an average of 400m. The right-lateral displacement of groove on the fault scarp is 26 ~ 40 m, and the larger-level groove displacement can be divided into 5 7m, 8 3m and 15 3m3 groups. They are roughly an integer multiple of 3. The measured height of the scarp is 12m, 2151m and 363m, respectively, which is an integer multiple of 12, and the horizontal displacement of the southwestern Alashankou is 1 ~ 17m. The vertical displacements can be divided into two groups, one is 0 55m, the other group is 12 ~ 15m. These data may reveal the characteristic seismic horizontal displacement of the fault segment is 3m and the vertical displacement is 12m. Regional geomorphology and chronological analysis show that the last formation of the alluvial fans in southeastern Jinghe is about 70,000 years ago and the right-lateral slip rate is 47mm / a.