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自然灾害频繁发生,不仅给人民生命财产造成严重损失,也成为发展国民经济的一大制约因素。其中的地质灾害,如地震、滑坡、泥石流等均为破坏性极大的自然灾害。现根据有关资料,摘编出我国地质灾害之最,以配合“减灾十年”活动,增强全社会的防灾、减灾意识。一、地震灾害 1.震级最大的地震据仪器记录,我国最大的地震为1950年8月15日发生的西藏察隅地震。震级M.8.6级、震中烈度十一度,极震区面积约2.4万平方公里,八度区破坏范围广达20余平方公里。 2.烈度最高的地震 1920年12月16日傍晚发生于宁夏海原的8.5级地震,震中烈度高达十二度。 3.断层破裂长度最长的地震海原8.5级地震时形成的巨大地表断层,长约230公里,最大水平位移为14米。
Frequent natural disasters have not only caused serious losses to people’s lives and property, but have also become a major constraint on the development of the national economy. Among them, geological disasters such as earthquakes, landslides and mudslides are devastating natural disasters. According to the relevant information, we have compiled the most of the geological disasters in our country so as to tie in with the “Decade of Deceased Disaster Reduction” and enhance the awareness of disaster prevention and disaster reduction in the whole society. 1. Earthquake 1. Earthquake with the highest magnitude According to the records of the instrument, the largest earthquake in China was the Zayu earthquake in Tibet on August 15, 1950. Magnitude M.8.6, the epicenter intensity of eleven degrees, the earthquake area of about 24000 square kilometers, octave damage range of up to 20 square kilometers. Earthquake of the highest intensity occurred on the evening of December 16, 1920 in the Haiyuan, Ningxia, magnitude 8.5 earthquake with a maximum intensity of 12 degrees. 3. Earthquake with the longest fault rupture The huge surface fault formed during the Haiyuan M 8.5 earthquake is about 230 km long and the maximum horizontal displacement is 14 meters.