地下工程测量横向贯通误差处理方法研究

 为了提高地下工程贯通的施工质量,减小由地面控制网误差引起的横向贯通误差,本文在对地下工程地面控制网的平差方法及横向贯通误差估算方法的研究的基础上,提出了在传统的最小二乘原则下结合横向贯通误差为零这样的约束条件对地面控制网进行平差的方法,并通过实例验证了该方法的可行性,对平差方法提出了一些建议。本文对类似的地下工程贯通平差具有一定的指导作用。

Study on Treatment Method of Lateral Through Error in Underground Project Survey

In order to improve the through construction quality of the underground project and to reduce the lateral through error occurred by the error of the surface control network,base on the study on the average error method of the surface control network for the underground project and the error estimation method of the lateral through,in references of the average error model of the tunnel surface plane control network with the through constraint conditions,the paper had a study on the average error method on the surface control network under the conventional min 2 multiplying principle and with the lateral through error as zero constraint conditions.The method was applied to calculate the case.Some proposals were provided for the average error method.The paper would have certain guidance to the average error of the through in the similar underground projects.