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中德合作于１９８８年和１９９１年两次用ＧＰＳ监测滇西地震预报实验场场区现代构造运动及红河断裂的地壳形变，两期观测的数据处理结果表明，滇西ＧＰＳ观测基线相对定位精度接近１０－７。利用两期观测资料得到的基线变化，并结合构造应力场应变模型，估算得到场区近期构造应力场的应力特性参数，结果表明：该地区应力状态以挤压为主，兼有拉张及右旋剪切，其主压应力方位为Ｎ１７°±１２°Ｅ；由于印度板块在场区西侧的侧向挤压作用，场区内北东向压应力占优势。
The cooperation between China and Germany in 1988 and 1991 used GPS to monitor the modern tectonic movement and the crustal deformation of the Honghe fault in the site of the western Yunnan earthquake prediction experimental site. The data processing results of the two phases show that the relative positioning accuracy of the GPS observation baseline in western Yunnan is close 10-7. Based on the baseline changes obtained from the observation data of two phases and the structural stress field strain model, the stress characteristics of the recent tectonic stress field in the field are estimated. The results show that the stress state in the region is dominated by compression, The shear stress is N17 ° ± 12 ° E. Due to the lateral extrusion on the west side of the Indian plate, the north-east compressive stress in the field is dominant.