长大隧道贯通误差估算方法

Estimation for Through Errors of Large-Scale Tunnel

结合大伙房水库输水工程长大隧道,介绍施工测量控制系统的设计思路及其误差所引起的横向、纵向、竖向贯通误差的估算方法,精度预计结果说明本设计方案能满足横向、纵向、竖向贯通误差控制的要求。

In the light of large - scale tunnel and water - carriage engineering of Dahuofang Reservoir, the paper introduces the design thinkings of control system for construction measurement as well as the estimation for the errors in transverse, longitudinal and vertical throughs of tunnel, which were aroused by the errors of control system design. The predicted result accuracy illustrates that present design scheme could satisfy requirements for control of errors in transverse, longitudinal and vertical throughs.