北京地铁1、2号线消隐改造工程方案及目标

北京地铁1、2号线修建时技术标准低，加上日开通运营30多年，线路及车辆设备严重老化，导致地铁运营存在许多安全隐患，经北京市批准，地铁1、2号线升级改造已列入2008奥运配套项目。现对线路、车辆、供电、通信、信号、通风空调、给排水及消防、助力照明配电、火灾自动报警及环境设备监控、自动扶梯第10大系统的改造方案作一介绍，并阐述了工程改造的难度及预期目标。

Schemes and Targets of Upgrading for Hiddentrouble Elimination of Beijing Subway Lines 1and 2

The Beijing Subway Lines 1 and 2 were built with low technical standard and their tracks and the car equipment have been seriously aged following their opening and putting into operation for over 30 years, leading to the existence of many hidden troubles for safety in the subway operation, Being approved by the Beijing Municipality, the upgrading of the Beijing Subway Lines 1 and 2 has been included in the list of the supporting projects for the Beijing 2008 Olympic Games, An introduction is hereby presented for the upgrading schemes of the 10 systems including the tracks, cars, power supply, communication, signaling, ventilation and air conditioning, water supply and drainage and fire fighting, power distribution for power and lighting, automatic fire alarm and monitoring for environmental equipment and escalators and the difficulties and the expected targets for the upgrading are elaborated as well.