文章编号：(1997)01-28-5
隧道净空收敛量测精度分析
(石家庄铁道学院交通工程系， 石家庄 050043)
摘 要: 运用协方差理论，对影响机械式收敛计量测隧道净空收敛精度的各种误差来源进行了严密的分析与论证， 结果发现基线长度的量测标准差对各测点的收敛量的影响可忽略不计。
关键字: 隧道净空收敛 绝对收敛量 相对收敛量 标准差
ACCURACY ANALYSIS OF MEASURING CONSTRUCTION GAUGE OF TUNNEL
（Department of Jiaotong Engineering, Shijiazhuang Railway Institute, Shijiazhuang 050043）
Abstract:The sources of all sort of error that affect the accuracy of measuring construction gauge of tunnel with mechanical convergence meter, were analysed and argufied strictly by appling the variance theory in this paper. The result indicates that the measurement standard deviation of base line is inconsiderable to convergence value of every measuring point.
Key words: convergence of tunnel construction gauge absolute convergence value relation convergence value standard deviation
