摘要本文主要是对一条长约5。5km的跨海隧道进行贯通测量方案的合理设计,并且预计贯通相遇点在贯通重要方向的误差。具体通过地面控制网的误差预计、定向误差预计及地下导线的误差预计方法,对隧道进行横向贯通误差的预计。根据本隧道的特点和精度要求设计竖井定向方案,通过分析得出井下导线的测角精度、测边精度对横向贯通误差的影响。本文着重对支导线加测陀螺定向边的方法进行了论述,对所加测陀螺边的条数及加测的最佳位置也进行了设计分析。同时指出了该方法对洞内定向精度的准确性。文章最后对贯通误差预计的方法进行了分析,成功的完成了对跨海隧道的贯通误差预计,对于长大隧道的贯通测量也有一定的参考价值。78216
毕业论文关键词: 贯通测量,横向贯通误差预计,测边精度,测角精度,陀螺 定向,竖井定向,超长隧道
Abstract This paper design a reasonable measurement program for a 5。5km long cross sea tunnel though expecting the meeting point error in the important direction。 In which the errors of the ground control network, vertical pit orientation and underground traverse are predicted。 The lateral error of the tunnel is carried out。 According to the characteristics of the tunnel and the accuracy requirements, ground GPS control network is designed, vertical shaft orientation program is designed, and underground traverse is designed。 This paper focuses on the method of the gyro edge in the underground traverse, and also carries out the design and analysis of the number of gyro edge and the best position。 Also pointed out that the accuracy of the method of the directional accuracy。 Finally, through the analysis of the error prediction method, the successful completion of the cross sea tunnel through the error is expected, for the long tunnel through the measurement also has a certain reference value。
Key words: Breakthrough measurement,Lateral breakthrough error prediction, Distance measuring accuracy,Angle measuring accuracy,Gyroscope orientation,Vertical pit orientation,Long tunnel
目 录
摘 要 I
Abstract II
1 绪 论 1
1。1 选题背景和意义 1
1。3 主要研究内容和技术路线 2
2 隧道工程概况 3
3 隧道工程的控制测量 4
3。1 洞外控制测量 4
3。2 洞内控制测量 6
3。3 竖井联系测量 9
3。3。1 一井定向 10
3。3。2 陀螺经纬仪定向 12
4 隧道贯通误差预计 13
4。1 地面控制网的误差预计 13
4。2 定向误差预计 14
4。3 地下导线的误差预计 14
4。4 总误差预计 15
5 加测陀螺定向边的洞内平面控制测量 16
5。1 陀螺经纬仪概述 16
5。1。1 陀螺经纬仪定向的原理及作用