全站仪免棱镜测量技术在隧道开挖净空测量中的应用

The Application of Total Station Electronic Tachometer in Tunnel Excavation Clearance Measuring without Prism

全站仪在工程测量领域中应用已非常普遍,在监控量测领域中也越来越受业界青睐,但全站仪在隧道开挖净空测量中应用并不广泛。隧道开挖净空测量在隧道施工过程中的实际意义尤为明显,通过监测仪器进行开挖断面测量能准确掌握开挖效果,从数量上获悉超挖和欠挖的部位及程度,指导下一工序施工。通过笔者近几年使用全站仪进行隧道开挖净空测量的经验,结合工程实例,阐述全站仪免棱镜测量技术在隧道开挖净空测量中的应用。

Total station electronic tachometer is widely used in engineering survey, and is getting more and more favorable in monitoring measurement. However, it is not widely used in tunnel excavation clearance survey, which has an obvious significance in the process of tunnel construction. The excavation effect can be precisely controlled through the measurement of the excavation section by the monitoring instrument. The position and extent of the overcut and undercut can be quantitatively learned, and the next working procedure for the construction can be directed. Combine theory with practice, the application of total station non-prism measurement technology in tunnel excavation clearance survey is expounded from the experiences of the writers using total station electronic tachometer for tunnel excavation clearance survey in recently years.