隧道工程测量的精度分析与测量方案设计

Precision Analysis and Survey Scheme Design of Tunnel Engineering

横向贯通误差是评价隧道工程施工质量的重要精度指标.合理分配允许贯通误差并进行相应的施测精度方案设计是隧道工程测量工作的关键.对影响隧道贯通的不同测量阶段的精度及其对贯通误差的影响进行了详细分析,提出了基于贯通误差限差"按需分配"原则进行测量方案设计的方法.通过必要的数值计算,为多种隧道工程的测量方案设计提供比较直观的理论参考.

The breakthrough error is one of the most important parameters which indicate whether the tunnel has been constructed favorably according to the specification.It is crucial to distribute the breakthrough error allowance and scheme out a survey precision design appropriately.This paper studies the survey precision and the influence value of the lateral breakthrough error in each portion of the tunnel project,providing a serial of theoretical reference tables for different tunnel project according to numerical calculation.