Research on the Measurement Method and Result Analysis of the Plane Connection of Metro Tunnel Sections in Nanning City
Urban rail transit is mainly planned in the main urban area of the city,often encountering deep and narrow vertical shafts.At this time,coordinates and directions cannot be directly transmitted to the underground through wires.However,one well directional and two well directional measurement methods can play an important role.This article takes the section from Qingxiushan Station to Municipal Museum Station of Nanning Metro Line 3 as the research object,and elaborates in detail on the operational requirements,accuracy control methods,and precautions of one well directional and two well directional connection measurement methods under long and deep vertical well conditions.The frequency of connection measurement between Qingxiushan Station and Municipal Museum Station is determined and the results are analyzed.This ensures the connectivity between Qingxiushan Station and the Municipal Museum Station,which can provide reference for similar projects in other cities.
plane connection surveysubway tunnelone well orientationtwo well orientationprecision analysis
NETL
NSTL
万方数据
