【摘要】 本文利用航天遥感形象对线性构造的特殊表现力，对永定河中上游地区的活动断裂进行了系统的解译和验证。共解译出近南北、近东西、北东、北西、北北东和北西西向六组活动断裂。通过对活动断裂的分析研究，认为本区晚近地质时期，构造应力场发生了两次重大变化。应用航天遥感图象进行活动断裂与区域稳定性关系的分析，具有投资小、成图快、系统性强的优点，可以迅速而经济地为城市区域稳定性评价提供科学依据。更多还原

【Abstract】 Based on the particular expression ability of spacefight remote sensing images about linear structure, interpreted and veritied the active faults in middle -upper reaches area of YongDing river systematically. Interpreting result shows that there are six groups of active fault who’s strike direction is from south to north, east to west, northeast, northwest,northeast by north, northwest by west in the erea. From the analysis and stuy on the actire faults, we in tent that threre two important changes of tectonic stress fiold duing the late recent geologic epoch. With the holp of spaceflight remote sensing picture, the analysis on the relationship between action faults and regional stablity has the merit of lower mvestment,quicker getting pictwre and strong systematicness, so it is able to furnish scientific evidence rapidy and economically for the evaluation of city regional stabcity.更多还原