隧道净空收敛非接触量测方法及精度分析  

Analysis on non-contact measurement method and accuracy of tunnel clearance convergence

作　　者：桑圣华 徐孟强 杜强 潘知远 Sang Shenghua;Xu Mengqiang;Du Qiang;Pan Zhiyuan(China Design Group Co.,Ltd.,Nanjing 210000,China)

机构地区：[1]中设设计集团股份有限公司

出　　处：《矿山测量》2019年第5期86-90,共5页Mine Surveying

摘　　要：提出隧道净空收敛非接触量测方法,进行误差分析。针对某两车道隧道α1从0°-360°变化时,计算中误差的绝对值呈现周期性变化,变化周期为90°,当α1取值范围为[74°,89°]时,观测收敛测线长度的中误差绝对值优于0.33 mm,可以满足《铁路隧道监控量测技术规程》净空变化测试精度0.5~1 mm的精度要求。An arbitrary orientation method for tunnel clearance convergence non-contact measurement was proposed, and accuracy analysis was also carried out. For a two-lane small tunnel, when the changes of α1 from 0°-360°, the absolute value of the calculation accuracy presented periodic change, and the change period was 90°. The range of α1 was [74°,89°], and the accuracy of the observed convergence line length was better than 0.33 mm, which could meet the accuracy requirement of 0.5 mm^1 mm for the clearance test accuracy of "Technical Specification for Railway Tunnel Monitoring and Measurement".

关 键 词：隧道 净空收敛 非接触量测 任意定向 精度 

分 类 号：U456[建筑科学—桥梁与隧道工程]