国际隧道协会于1992年5月16～20日在墨西哥的亚加布尔科召开了第18届年会。33个国家约700名代表参加了这次会议。现在国际隧协的团体和个人会员已增加到156个。 10个工作小组向年会作了报告。从事城市隧道研究的小组提出了研究城市隧道地表沉陷的初步报告,它涉及沉陷预估、监测以及对既有 The International Tunneling Association held its 18th Annual Meeting in Yogyakarta, Mexico, from May 16 to May 20, 1992. Some 700 delegates from 33 countries attended the meeting. Now the International Tunnel Authority’s membership and individual groups have increased to 156. Ten working groups reported to the annual meeting. The team engaged in urban tunneling proposed a preliminary report on the study of surface subsidence in urban tunnels involving subsidence prediction, monitoring,