随着国民经济与城市建设的快速发展,电梯的使用量与日俱增,已经成为现代建筑中不可缺少的交通运输工具,成为衡量一个城市现代化程度的标志。成千上万台电梯的投入使用,给人们的工作与日常生活带来方便;同时,电梯运行故障时有发生,甚至造成事故,危及乘客的人身安全,此类报道在新闻媒体上屡见不鲜。2010年1月初至今,天津本市先后发生4起电梯事故。电 With the rapid development of national economy and urban construction, the increasing use of elevators has become an indispensable means of transportation in modern buildings and a symbol of the degree of modernization of a city. Thousands of elevators have been put into operation to bring convenience to people’s work and daily life. At the same time, failure of elevators has even occurred, causing accidents and endangering the personal safety of passengers. Such reports are not uncommon in the news media. Since the beginning of January 2010, four elevator accidents have occurred in Tianjin Municipality. Electricity