生命系统是人类生活赖以生存的重要设施。地震中生命线系统的震害特征主要表现在破坏原 因多、机理复杂、破坏形式多样、连锁性强、影响范围大、检测和修复期长、经济损失大等特点。 生命线系统的重要性决定了它在震后应急反应中的特殊地位，提高生命线系统的抗震能力及其快速 检测和修复能力是减轻地震损失的重要措施。 Life system is an important facility on which human life depends. The earthquake damage characteristics of the lifeline system in the earthquakes are mainly characterized by many causes of damage, complex mechanisms, diverse forms of destruction, strong chaininess, large impact range, long detection and repair periods, and large economic losses. The importance of the lifeline system determines its special position in the post-earthquake emergency response. Improving the seismic capability of the lifeline system and its rapid detection and repair capability are important measures to mitigate the earthquake loss.