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在滇西北部的永胜地区其在上新世时代就有着显著的断裂现象,且其活动较为明显且处于强烈状态。除此以外永胜地区的活动构造也呈现出较明显的地貌特征。通过一定数值比的活动构造填图研究得到,在该地区共发现14条存在不同特征以及类型的断裂。就14条断裂而言,规模最大的断裂主要为永胜断裂、木耳坪羊坪断裂以及金官断裂。其断裂分级为一级分支,同时其活动以伸展较多。上述三个除了规模大以外,活动性相较于其他11条断裂也较强,对其活动性进行分级可得到5类级别,由强到极弱为止。研究滇西北永胜地区的活动从断裂构造分析其体系为平面上断裂,且为弧形旋扭构造同时向东面方向进行突出。从断裂剖面上分析得到其表现形式为负花状构造类型,且为张扭性的断裂。现如今永胜地区的断裂带因近南北向产生的主压应力使其出现伸展正断趋势。同时会有左旋走滑的表现。滇西北永胜地区的主要活动断裂构造体系为弧形旋扭,且是不同的断裂在彼此间走滑拉分作用下产生的特殊活动断裂。
In Yongsheng area in northwestern Yunnan Province, it had a significant fracture in the Pliocene era, and its activities were more obvious and intense. In addition, the structure of the activities in Yongsheng area also shows obvious landform features. Through a certain number of active tectonic mapping study obtained in the region were found in a total of 14 different characteristics and types of faults. For the 14 faults, the largest faults are the Yongsheng fault, the Miaofeng Pingouping fault and the Jinguan fault. Its fracture is graded as a first-order branch, while its activity is extended more. Apart from the large scale, the above three are also more fragile in activity than the other 11 and five levels of activity are graded, from strong to very weak. The study of the activity in Yongsheng area of northwestern Yunnan Province shows that the system is fractured on the plane from the fault structure and protrudes in the east direction for the arc twist structure. From the fracture profile analysis showed that the performance of the negative flower-like structure type, and for the tensile torsional fracture. Nowadays, the main compressive stress in the fault zone in Yongsheng region due to the near north-south direction causes the extension of the strike-slip trend. At the same time there will be left-slip performance. The main active faults in Yongsheng area of northwestern Yunnan are characterized by arc-shaped twists and turns, and are the special active faults that occur under the action of different slip-pulling points between each other.