in view of the shortcomings of traditional connection survey and traverse survey in the penetration of medium and long-dis-tance subway tunnel, the full-automatic gyroscope orientation method is applied to the penetration of medium and long-distance sub-way tunnel. This paper briefly introduces the orientation principle of automatic gyroscope, and deduces in detail the process of gyro o-rientation participating in traverse network adjustment. Finally, taking a through section of Wuhan Metro Line 7 as an example, it is verified that the orientation accuracy of gyroscope is at the same level as that of precision traverse measurement. It proves the feasibili-ty and effectiveness of the full-automatic gyroscope in the penetration of medium and long-distance subway tunnel, and has a certain guiding significance for similar penetration projects.
medium and long distancetunnel penetrationfully automatic gyroscopeaccuracy analysis
维普
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