It discusses the influence of ground control network, underground traverse survey, shaft orientation and gyroscopic orientation edge append-survey on breakthrough precision.
分析了地面控制网、井下导线测量、立井定向和加测陀螺定向边对贯通大型巷道精度的影响；讨论了提高测量精度的可行性方法。
It discusses the influence of ground control network, underground traverse survey, shaft orientation and gyroscopic orientation edge append-survey on breakthrough precision.
分析了地面控制网、井下导线测量、立井定向和加测陀螺定向边对贯通大型巷道精度的影响；讨论了提高测量精度的可行性方法。
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