Analysis on the Influence of Ground Control Network Deformation on the Baseline Edge of the Shield
In the process of subway construction,the measurement work is very important,which plays an important role in the accuracy of shield tunneling and structural construction.In the subway construction control measurement work,it is necessary to transfer the coordinates and elevation of the ground control points to the underground control points through connection survey,and use the underground control points as the baseline points to guide construction.The results of ground control points are used as the basis for connection survey,and their accuracy directly determines the accuracy of underground control points.By analyzing the influence of ground control network deformation on the baseline edge of the shield,this paper discusses relevant measures to improve the control measurement accuracy,such as optimizing the ground control network and applying high-precision instruments and equipment.
ground control network deformationconnection surveybaseline edge
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