用全站仪进行隧道围岩收敛监测的实践研究

Measurement of Tunnel Convergence Monitoring Using Total Station

对采用全站仪进行隧道围岩收敛监测的方法进行了研究。理论误差计算的结果表明这种方法可以大体上满足现场施工监测的要求。采用这种方法监测的精度不仅依赖于仪器的精度,同时也和施测过程中仪器的位置有关。该方法在凤凰关隧道的监控量测中进行了应用。应用结果表明采用这种方法所测得的结果可以较好地反映出施工过程中围岩的变形特性。

Measurement of tunnel convergence monitoring using total station was studied in this paper. Theories of error calculation results demonstrate that this method can roughly satisfy the requirement of field construction monitoring. The theoretical analysis indicated that precision of such method was related not only to the instrument precision but also to the location of the instrument. This method was adopted in Fenghuangguan project. The obtained results in the project showed that such method could fairly well represent the deformation behavior of the rock mass in tunneling.