外文翻譯--中國(guó)的地裂縫災(zāi)害-展示頁(yè)
2025-05-27 08:13本頁(yè)面
【正文】 Dabieshan faults ground fissure zone, in North China area, including seven provinces: Hebei, Shanxi, Shaanxi, Jiangsu ,Shandong and Anhui. Some ground fissures are also discovered in following 8 more provinces: Liaoning, Jilin, Gansu, Guangdong and Yunnan, with little hazard (XIE, 1998). FenWei basin ground fissure zone is the most typical and sever among the four ground fissure zones. FenWei basin is posed by Fen River basin and Wei River basin, where many destructive earthquakes happened and the present earthquake activity is still in high level. In the basin there are typical normal earthquake faults, with the maximum offset 8km. Ground fissures hazards in this zone are most disastrous and typical with differential vertical creeping and opening horizontal movement. 3 Xi39。1 中文 2258 字 Ground fissure hazards in China Introduction: Ground fissures are very popular earth surface phenomena, showing the discontinue or broken of the earth surface. Usually, they occur acpanying with other geological hazards. There are many kinds of ground fissures: tectonic fissures, including fault fissures, earthquake fissures, volcanic fissures。 slipcollapse fissures, including landslide fissures, mining fissures. Ground fissures have long history in China. The earliest ground fissures were recorded about five thousand years ago, “Ground fissures occurred before Yellow Emperor passed” (Taiping Yulan, the 880th).Those ancient ground fissures were pure natural ground fissures .However, the modern ground fissures have been caused by both natural and manmade genesis since the beginning of 20th century and occurred only tens of years. History of modern ground fissures in China The first group fissure was observed on the walls of the buildings in Northwestern University in Xi’an city in the beginning。an is the most severely suffered from the hazard among the 50 cities affected by ground fissures. Datong, Hancheng, and Yuci are the other big cities (the population is over a million in each city) with severe ground fissures problems. Ten ground fissures distribute over the whole down town area of Xi39。an fault),creep in the same way, mainly dip to south with 75℃ ～ 85℃ high angle, separating nearly 1km each other, showing the same tectonic characteristics clearly(GENG, etal,199
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