地质灾害研究是第29届国际地质大会会议的主要议题之一,而地震灾害又是其中的主要内容。伊朗学者报告了1990年6月20日7.3级曼吉尔(Manjil)地震。这次地震使37000人丧生,毁坏房屋150000座,使40万人无家可归,估计损失数百万美元。同时地震引发了严重的滑坡、滚石和沙土液化。滑坡产生的主要原因被认为是地震引起强烈的垂向加速度,同时 The study of geological disasters is one of the main topics of the 29th International Geological Conference, and the earthquake disaster is one of the major topics. Iranian scholar reported the 7.3-magnitude Manjil earthquake on June 20, 1990. The earthquake killed 37,000 people and destroyed 150,000 houses, leaving 400,000 people homeless and estimated to have lost millions of dollars. At the same time, the earthquake triggered a serious landslide, rock and sand liquefaction. The main reason for the landslide is believed to be the strong vertical acceleration caused by the earthquake, meanwhile