城市规划中可视化隧道地表沉降自动测量方法研究与实现

Study and implementation of automatic measurement method of ground settlement in visual tunnel in urban planning

针对当前方法存在地表沉降量测量值与真实值相差较大,无法准确分析隧道施工当前所处预警阶段,及时采取有效措施的问题,提出基于理论计算的可视化隧道地表沉降自动测量方法,计算城市规划中可视化隧道盾构施工引起的地表沉降及其影响因素之间的相似性函数关系,根据该相似性函数关系,分析城市规划中可视化隧道地表沉降规律;在此基础上,以Peck公式为理论依据,采用横向测量和纵向测量方法对城市规划中可视化隧道地表沉降分布进行预测,实现隧道地表沉降自动测量。实例分析结果显示,所提方法得到的测量结果与真实值吻合度最高,绝对误差值最小,且通过利用所提方法能够判断隧道地表沉降所属预警阶段,为及时采取相应措施保证隧道安全施工提供了参考。

In view of the current method,there is a large difference between the measured value of surface subsidence and the actual value,and it is impossible to accurately analyze the current warning stage of tunnel construction and take effective measures in time.This paper proposes an automatic measurement method for visual surface settlement of tunnels based on theoretical calculations,and calculates urban planning. The similarity function relationship between surface subsidence and its influencing factors caused by the construction of visible tunnel shields is analyzed.Based on the similarity function relationship,the ground settlement of visual tunnels in urban planning is analyzed.On this basis,the Peck formula is used as the theoretical basis.The use of horizontal and vertical measurement methods to predict the surface settlement distribution of visible tunnels in urban planning,to achieve automatic measurement of surface settlement of tunnels.The results of the example analysis show that the measurement results obtained by the proposed method are in good agreement with the actual values and the absolute error value is the lowest.The method can be used to determine the early warning phase of the ground settlement of the tunnel and provide timely measures to ensure the safe construction of the tunnel.reference.