Automatic Monitoring Method of Highway Tunnel Shaft Construction

Monitoring and measurement in the construction of long tunnel shaft is the guarantee of construction safety. Due to the limitation of shaft structure and construction space, the operability of conventional monitoring means such as level and total station is inefficient for the section far from the working face, which makes the shaft construction monitoring a difficult problem. Based on the Taihe tunnel shaft project of Mo-Lin expressway, an automated monitoring and measurement method for shafts was studied. This method was applied to actual construction monitoring, and monitoring data during construction was analyzed. The precautions for monitoring and measurement were summarized. The research results have certain guiding significance for the monitoring and measurement of similar shaft excavation.