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凉山近南北向活动构造带位于青藏高原东南边缘鲜水河 -安宁河 -则木河 -小江断裂带中段东侧 ,与鲜水河断裂带左阶雁列 ,与小江断裂带右阶雁列。大体呈南北或北北西方向展布的凉山构造带 ,自北而南主要包括普雄河断裂、布拖断裂和四开 -交际河断裂。晚新生代以来的活动 ,凉山南北向构造带以明显的左旋走滑为特征 ,相应的倾滑位移分量不大。初步统计得到其晚第四纪以来的走滑速率为 2mm/a左右 ,晚新生代以来位移规模 13.5～ 15.5km。凉山活动构造带的活动 ,弥补了鲜水河 -安宁河 -则木河 -小江断裂带中段安宁河 -则木河断裂带活动存在的位移和速率亏损 ,对于全面评价青藏高原东南边缘的地壳运动和变形模型具有重要意义。
The active north-south tectonic belt of Liangshan is located on the east side of Xianshuihe-Anninghe-Zemuhe-Xiaojiang fault zone on the southeastern margin of Qinghai-Tibet Plateau, with the left-order geese of Xianshuihe fault zone and the right-hand geese of Xiaojiang fault zone. The Liangshan structural belt, which is generally distributed in the north, south, north, west and west, mainly consists of the Puxionghe fault, the Bundo fault and the Sikai-Renhe fault from north to south. Activities since the Late Cenozoic and Liangshan north-south tectonic belt are characterized by obvious left-lateral strike-slip, and the corresponding component of the slip-slip displacement is not large. The initial statistics show that the slip rate since Late Quaternary was about 2mm / a, and the displacement scale was 13.5 ~ 15.5km since Late Cenozoic. The activities of Liangshan activity tectonic belt make up for the displacement and velocity loss existing in the Anninghe-Zemuhe fault zone in the middle section of Xianshuihe-Anninghe-Zemuhe-Xiaojiang fault zone. It is of great significance to comprehensively evaluate the crustal movement in the southeastern margin of the Qinghai-Tibet Plateau And the deformation model is of great significance.