Comparative Research on Tunnel Penetration Measurement Technique and Its Accuracy
To improve the accuracy of tunnel penetration measurement,a measurement method combining front and anteroposterior triangulation elevation survey and gyro-orientation technique is proposed through experimental simulation.Among them,anteroposterior triangulation elevation survey can effectively avoid the influence of errors in triangulation.After comparing three measurement schemes,it was found that the elevation penetration accuracy in scheme three was increased from 0.323 m to 0.150 m,and the plane penetration accuracy was increased from 0.47 m to 0.35 m,indicating a significant improvement in measurement accuracy.This further verifies the effectiveness of combining these two measurement techniques.
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