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近几年,一些地下室、人防工程因为地下水、滞水渗入而不能使用,有的经返修多次仍不能根除渗漏。北京使馆区的大使馆、外交公寓均有地下室,大到几千平方米、小有二三百平方米,有的已经历30个春秋,至今安然无恙,况且很多为自建大使馆,地下室均有空调、冷冻自动化控制设备、贮藏室等。这些工程是不是使用了特殊防水材料呢?不是,使用的都是普通卷材。那么
In recent years, some basement and air defense projects cannot be used because of the infiltration of groundwater and stagnant water, and some of them cannot be eradicated by repeated repairs. The embassies and diplomatic apartments in the Beijing Embassy District all have basements, ranging in size from a few thousand square meters to two to three hundred square meters, and some have gone through 30 spring and autumn days. They are still safe, and many are self-built embassies. Air conditioning, refrigeration automation control equipment, storage room and so on. Do these projects use special waterproof materials? No, they use ordinary coils. Then