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一、问题的提出 1984—1985年,水电部长江流域规划办公室、地质部遥感中心,分别进行了重庆至宜昌长江干流彩红外和侧视雷达航空摄影,区域陆地卫星影象计算机处理。在分析遥感信息和野外调查之后,地矿部遥感中心有人提出,在三斗坪坝址以西10公里,狮子口一带存在着“狮子口断裂束”。该断裂束影响宽度达3公里,长约47公里。从微震分布看,它是控震构造,活动性值得注意。并且认为,“狮子口断裂束”,在牛肝马肺峡上
I. Issues raised From 1984 to 1985, the Yangtze River Basin Planning Office of the Ministry of Water Resources and Remote Sensing Center of the Geological Department conducted computer-aided processing of aerial infrared and side-view radar aerial photographs of Chongqing and Yichang, respectively, and regional land satellite images. After analyzing the remote sensing information and the field investigation, it was suggested by the Remote Sensing Center of the Ministry of Geology and Minerals that there is a “Lion’s mouth fracture beam” in the vicinity of the Lion’s mouth 10 kilometers west of Sandouping Dam. The fracture beam affects a width of 3 km and a length of 47 km. Seen from the microseismic distribution, it is an earthquake control structure, and activity is worth noting. And that “the lion’s mouth fracture beam,” in the cow liver horse lung Gap