地下管线是城市基础设施的重要组成部分,是现代城市高质量、高效率运转的基本保证,被称为城市的“生命线”。由于历史原因,许多城市地下管线资料残缺不全,有的资料存在精度不高或与现状不符等问题,城市建设挖断、挖穿地下管线的事故时有发生,造成重大经济损失和不良的社会影响? Underground pipeline is an important part of urban infrastructure, is the basic guarantee of modern city high quality and high efficiency operation, known as the city’s “lifeline.” Due to historical reasons, many urban underground pipeline information is incomplete and incomplete, some information is not accurate or inconsistent with the status quo and other issues. Urban construction excavation, digging through underground pipelines accidents have occurred, resulting in significant economic losses and adverse social impact ?