Tien Shan tectonic belt has experienced intense seismicity and a series of destructive strong earthquakes. However, earthquake triggering effects and faulting interactions in this area are poorly understood. A 3D finite element model of Tien Shan tectonic belt is constructed, to investigate stress evolutions on major faulting zones driven by interseismic tectonic loading and historical strong earthquakes with M≥ 6.0 since 1900. The numerical results show Tien Shan is dominated by nearly N-S compression, with higher tectonic loading rate in southwest Tien Shan. 1906 Manas M7.7 earthquake exerted pronounced Coulomb stress increase on its adjacent faulting zones, especially in the epicenter of 2016 Hutubi M6.0 earthquake. And three large earthquakes with M≥ 8.0, e.g., Chilik M8.3 earthquake in 1889, Kemin M8.0 earthquake in 1911 and Atushi M8.2 earthquake in 1902, increased the Coulomb stress by above 100 kPa in the epicenter of 1991 Keping M6.0 earthquake. While, stress perturbations by other strong earthquakes are limited, with slight Coulomb stress changes in the epicenters of their subsequent earthquakes. Overall, strong earthquakes with M> 7.0 in Tien Shan, induced substantial Coulomb stress changes on the adjacent faulting zones. Stress evolutions on major faults reveal higher stress accumulation in southwest Tien Shan, east KQX fault, west BoA fault, and HMT fault, indicating higher seismic risk.

天山构造带经历了强烈的地震活动和一系列破坏性强地震。然而，人们对该地区的地震触发效应和断层相互作用知之甚少。构建天山构造带3D有限元模型，研究1900年以来震间构造载荷和M≥6.0历史强地震驱动的主要断裂带的应力演化。数值结果表明天山以近NS压缩为主，天山西南地区构造加载速率较高。1906 年玛纳斯 M7.7 地震对其相邻断层带施加了明显的库仑应力增加，尤其是在 2016 年胡图比 M6.0 地震的震中。以及3次M≥8.0的大地震，如1889年Chilik M8.3地震、1911年Kemin M8.0地震和Atushi M8地震。1902年2级地震，使1991年柯坪M6.0地震震中库仑应力增加100 kPa以上。同时，其他强地震的应力扰动是有限的，随后地震的震中发生了轻微的库仑应力变化。总体而言，天山 M> 7.0 的强地震在相邻断层带上引起了显着的库仑应力变化。主要断层应力演化表明，天山西南、东KQX断层、西BoA断层和HMT断层应力积累较高，地震风险较高。天山M> 7.0的强地震，导致相邻断层带发生较大的库仑应力变化。主要断层应力演化表明，天山西南、东KQX断层、西BoA断层和HMT断层应力积累较高，地震风险较高。天山M> 7.0的强地震，导致相邻断层带发生较大的库仑应力变化。主要断层应力演化表明，天山西南、东KQX断层、西BoA断层和HMT断层应力积累较高，地震风险较高。