Research on Plane Control Measurement Method of Free Station Setting Method in Urban Rail Transit Shield Section
In the context of urban rail transit line sections developing towards long distances and large radii,as the section length increa-ses,the method of using in-cavity wires for azimuth and coordinate control will face risks such as penetration error exceeding limits.In order to reduce lateral penetration errors,this paper proposes a method of transmitting coordinates and azimuth angles in the tunnel using a free sta-tion network method,and conducts experimental verification with the wire measurement method.The results show that the free station network method is used to guide the tunnel penetration plane penetration error compared to the wire network method.The accuracy is increased about 50％,effectively ensuring the penetration accuracy and reducing the penetration risk.
long section shield tunneltunnel plane control networkfree station setting methodwire method
万方数据
维普
