摘要
以榕江关埠引水工程为例,超长9.3 km引水隧洞采用双护盾TBM盾构机单向掘进,地面控制网GPS采用静态测量,隧洞内采用左右侧强制对中盘交叉式点布置,出洞前500 m陀螺仪复核控制网边方位角测量,对隧洞贯通精准分析采取有效的措施和方案,确保TBM隧洞顺利贯通。
Taking the Rongjiang Guanbu water diversion project as an example,the ultra long 9.3km water diversion tunnel is driven by double shield TBM shield machine in one direction.The GPS static measurement of ground control network of Rongjiang Guanbu water diversion project is introduced.The crossing point arrangement of left and right side forced center plate is adopted in the tunnel.The azimuth angle measurement of control network side is rechecked by a 500 meter trocar before leaving the tunnel.The scheme ensures the smooth connection of TBM tunnel.
作者
梁武
LIANG Wu(Guangdong No.2 Hydropower Engineering Co.Ltd.,Guangzhou 511340,China)
出处
《水利科技与经济》
2022年第2期148-152,共5页
Water Conservancy Science and Technology and Economy
关键词
双护盾TBM
平面控制测量
贯通允许误差
测量关键技术
double shield TBM
plane control survey
through tolerance error
key technology of measurement
