2011年10月16日新疆精河县5.0级地震震害特征及发震构造

通过对新疆精河5.0级地震现场调查,分析了灾区局部场地效应及房屋震害特征,对震害特点进行了较为全面的分析总结。震害调查显示,灾区房屋主要以老旧的土坯房为主,地震作用使本身老旧的房屋裂缝加宽,破坏加重。同时,受局部场地差异影响,灾区房屋震害具有明显的南北分带的特点。另外,根据地震现场考察,此次地震的发震构造为库松木楔克山前断层,该断裂是发育在北天山山前逆冲推覆体前缘的一条全新世活动断层,沿断裂断错晚更新世以来的各级地貌面和沟谷阶地,并在地表形成断层陡坎和古地震地表变形遗迹。

THE CHARACTERISTIC OF SEIMIC HAZARD AND SEISMOGENIC STRUCTURE OF JINGHE EARTHQUAKE WITH Ms5.0 XINJIANG ON OCT 16TH, 2011

According to earthquake site investigation of Jinghe earthquake with Ms 5. O, the authors analyze site effects and characteristics of earthquake hazards in earthquake-striken area and summarizes features of earthquake damage. It has been showed that： most buildings in the earthquake-striken area were adobe building; they were severe damaged by earthquake; the damage building showed south-north zonation;the seismogonic structure was Kusonganuqike piedmont fault which was a HoP ocene active fault and dislocated the valley of Late Palaeozoic stratum, formed fault scarp and surface deformation on the ground.