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1986年7月21─22日,广西沿海海堤遭到8609号台风潮毁灭性的袭击。一千多公里的海堤百分之八十以上被高潮巨浪漫顶破坏,造成极为严重的灾害。钦州地区被淹没农田164万亩,受灾人口达202.7万人,其中死亡37人,受伤300人。毁坏渔船68艘,沿海水产养殖全部损失。沿海村庄、学校、工厂被暴潮冲击,有5.6万间房屋倒塌,生产生活资料遭到严重的破坏,据有关部门统计,各种损失折款为3.9亿元（其中风暴潮灾占80％）。详见表1。8609号台风较特殊且造成的灾害十分严重,为此,我们对其主要特点和影响因素进行了初步的分析。
On July 21-22, 1986, the coastal seawall in Guangxi was attacked by the devastating typhoon 8609. More than 80% of the more than 1000 kilometers of seawalls were destroyed by the climactic waves and caused extremely serious disasters. Qinzhou area was covered 1640000 acres of farmland, affected population of 2.027 million, of which 37 were killed and 300 wounded. Destroyed 68 fishing vessels, all losses of coastal aquaculture. Coastal villages, schools and factories were hit by the violent tides. Some 56,000 houses collapsed and production and living materials were severely damaged. According to statistics from relevant departments, various types of damages were discounted at 390 million yuan (80% of which were storm surges) . As shown in Table 1.8609, the typhoon is rather special and caused serious disasters. Therefore, we conducted a preliminary analysis of its main characteristics and influencing factors.