公路隧道施工水平位移及收敛量测精度确定方法与衡量方法探讨  

Discussion on the Determination and Measurement Methods of Horizontal Displacement and Convergence Measurement Accuracy in Highway Tunnel Construction

作　　者：樊祥君 秦峰 FAN Xiangjun;QIN Feng(China Merchants Chongqing Testing Center For Highway Engineering Co.,Ltd.,Chongqing 400067)

机构地区：[1]招商局重庆公路工程检测中心有限公司,重庆400067

出　　处：《公路交通技术》2024年第2期185-191,共7页Technology of Highway and Transport

摘　　要：隧道施工监控量测是隧道工程专业与测绘工程专业的交叉领域,在精度要求方面,隧道专业和测绘专业的规范标准中都有相关的条文说明,但不同规范标准之间存在侧重和差异,这给使用者在参考时造成一定的困扰。为了明确公路隧道施工监控量测水平位移监测精度要求,通过分析现行的国家标准、行业标准中的相关规定,结合多本现行规范中关于精度要求的说明,给出一种以确定允许变形量→确定衡量标准(中误差)→确定最大允许误差(中误差限差)为思路的精度确定方法,和计算实测数据中误差→对比计算中误差与中误差限差→判断数据可信度的精度衡量方法,并通过实测数据论证其合理性。结果表明,文中提出的精度确定方法、精度衡量方法及仪器选用能满足公路隧道水平位移监测或收敛监测的工作需求。The monitoring and measurement of tunnel construction is a cross-disciplinary field between tunnel engineering and surveying engineering.In terms of accuracy requirements,both the specifications and standards of tunnel engineering and surveying engineering have relevant provisions.However,there are differences and emphases between different standards,which can cause some confusion for users when referencing.In order to clarify the accuracy requirements for the horizontal displacement monitoring of highway tunnel construction,a method of determining the accuracy is proposed by the analysis of relevant provisions in current national standards and industry standards,in combination with explanations of accuracy requirements in multiple current specifications.This method follows the idea of determining allowable deformation→determining measurement standards(mean error)→determining maximum allowable error(mean error limit deviation).Additionally,a method for evaluating accuracy is provided,which involves calculating the mean error of measured data→comparing the mean error with the mean error limit deviation→judging the credibility of the data.The rationality of these methods is demonstrated by the analysis of measured data.The results show that the proposed accuracy determination method,accuracy evaluation method,and instrument selection can meet the requirements for horizontal displacement monitoring or convergence monitoring in highway tunnel construction.

关 键 词：水平位移监测 收敛监测 精度确定方法 精度衡量方法 中误差 

分 类 号：U455[建筑科学—桥梁与隧道工程]