浅谈城市过江隧道沉降监测实践中的体会

摘要

城市构筑物沉降现象，在我国各大、中型城市中普遍存在。本文以上海市城市过江隧道沉降监测为例，论述了利用二等水准测量方法进行隧道沉降监测（城市沉降监测的一种）的实践过程，总结了城市隧道沉降监测工作中的一些具体做法和经验，对掌握沉降规律、预测沉降趋势具有积极的现实意义。%The subsidence of urban structures exists widely in the large and medium-sized cities in our country.This paper takes the subsidence monitoring of Shanghai′s river-crossing tunnels as an example, introduces a practice process which makes use of second-grade leveling survey for the subsidence monitoring of the tunnels ( one of the methods of the city subsidence monitoring) and sum-marizes certain specific methods and experiences of the project of the subsidence monitoring of the river-crossing tunnel.These would make much sense to grasp the laws of the subsidence and forecast the tendency of subsidence.