1984年1月1日,某厂发生了一次强烈的液化气地面爆炸事故。在现场附近的有些建筑物在爆炸波冲击的一瞬间倒塌了。但是,特别引人注意的是1979年5月进行过抗震加固的三幢空旷砖混结构的泵房,虽遭严重破坏,却屹立未倒;而和上述三幢房屋 On January 1, 1984, a strong liquefied gas ground explosion occurred in a factory. Some buildings near the scene collapsed at the instant of the impact of the blast wave. However, what is particularly noticeable is that the three pump-houses with an empty reinforced concrete structure that had undergone seismic strengthening in May 1979 were severely damaged but they have not yet fallen;