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1 地震危险性评定历史尼泊尔位于澳洲—印度与亚洲三个板块边界处。其北界为世界上最高的山脉,表明了尼泊尔地下的持续构造运动。直到1992年国家才协力进行尼泊尔地震危险性定量评定工作.已进行的一系列这方面研究工作的有:历史地震及其影响的研究、所规划的水电站以及与供水计划有关的特殊场地研究。尼泊尔还没有一部有关强度和抗震的建筑规范。地质矿产部的地震部门在法国政府的资助下,在中心地区建设了一个微震台网,并架设了强震仪。由于三面与印度接壤,对尼泊尔来说,执行印度的地震危险性评定工作规范是最合适的。印度标准IS,1893～1984(ISI,1986)包含了首都加德满都的地震设计系数.其它地区的系数可通过外推法得到。
1 Seismic Hazard Assessment History Nepal is located at the border of Australia, India and Asia. Its northern boundary, the tallest mountain in the world, shows the continuing tectonic movement underground in Nepal. It was not until 1992 that the country coordinated the quantitative assessment of the magnitude of the earthquake in Nepal, and a series of studies have been carried out in this area: studies of historical earthquakes and their effects, planned hydropower stations, and special site studies related to water supply plans. There is no building code for strength and earthquake resistance in Nepal. The seismic department of the Ministry of Geology and Minerals built a microseismic network in the central area with the assistance of the French government and set up a strong earthquake instrument. Since three sides are bordering India, it is most appropriate for Nepal to implement India’s seismic risk assessment code. The Indian Standard IS, 1893 ~ 1984 (ISI, 1986) contains seismic design coefficients for the capital, Kathmandu, and coefficients for other regions are extrapolated.