Through-error estimation methods of maglev gyro-traverse of Ningtiaota extra-long tunnel

摘要：

　　Before the long tunnel breakthrough engineering construction, the estimation of through error which caused by inside hole and outside hole control network error should be done.To ensure the long tunnel breakthrough, adding measuring gyroscope azimuth angle is an effective method to amend error accumulation.This paper estimated proposed a through error estimation method to optimizing the underground traverse network in the long tunnel through measurement project, adopting the maglev gyroscope orientation measurement in the design of the long tunnel breakthrough measurement scheme, and selecting the rational scheme for measuring.After the breakthrough of long tunnel, the actual deviation on the main direction is 0.072 m, and the actual deviation on the secondary direction is 0.036 m.The long tunnel measurement scheme design is reasonable, and the precision of breakthrough is high.The breakthrough measurement engineering plays a guiding role for the similar survey project in the future.

关键词： Long tunnel breakthrough Through error estimation Gyro-orientation

作者: Ji Ma Zhiqiang Yang Zhen Shi

作者单位: College of Geology Engineering and Geomatics, Changan University, Xian 710054,China

会议类型: 国际会议

会议名称: 2015 International Academic Forum for Mine Surveying in China(2015中国国际矿山测量学术论坛)

会议地点: 北京

会议语种:英文

页码: 362-367

在线出版日期: 2015-10-16（万方平台首次上网日期，不代表论文的发表时间）