| 铁路特长隧道横向贯通误差允许值的确定 |
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| 作者单位： | ;1.中铁第一勘察设计院集团有限公司;2.武汉大学 |
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| 摘 要： | 针对20 km及以上特长隧道横向贯通误差问题,在传统隧道贯通误差预计方法的基础上,研究并提出适合特长隧道横向贯通误差预计的新方法。研究特长隧道的贯通精度预计数学模型和模拟计算方法,编制数据处理软件并对特长隧道洞外、洞内控制测量误差所引起的隧道贯通误差进行计算,通过计算,建议性地提出20 km及以上特长隧道横向贯通误差允许值。
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| 关 键 词： | 特长隧道 坐标差统计法 微分公式法 坐标中误差法 横向贯通误差 允许值 |
Calculation of Permitted Lateral Breakthrough Error of Extra-long Railway Tunnel |
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| Affiliation: | ,China Railway First Survey and Design Institute of Group Co.,Ltd.,Wuhan University |
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| Abstract: | Focusing on the lateral breakthrough error of extra-long tunnel of,this paper brings forward a new method to estimate extra-long tunnel lateral breakthrough error on the basis of the traditional method to study the transfixion precision mathematical model and numerical simulation method,to prepare the data processing software to calculate tunnel breakthrough error in and out of the tunnel caused by the error in controlled measurement. Finally,the permitted error in lateral breakthrough for tunnels of 20 km and over is recommended. |
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| Keywords: | Extra-long tunnel Coordinate difference statistics Differential equation method Coordinate error method Lateral breakthrough error Permitted value |
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