汕头市第二条过海水管顶管工程导向测量

Guidance Surveying of Shantou No.2 Crossing-sea Water Supply Pipe Jacking Project

该文以汕头市第二条过海水管顶管工程为例,确定了该顶管的贯通误差指标,对顶管导向测量期间的几项测量工序进行了横向误差的分配,包括控制测量,顶进孔和接收孔中心坐标测量,工作井内导向短基线测量,以及顶管施工过程中工具头后座中心的偏差测量等。通过该导向测量最终保证顶管的顺利贯通。

Taking Shantou No.2 Crossing-sea Water Supply Pipe Jacking Project as an example,the article defines the run-through error index of this pipe jacking,and distributes the transverse error of several surveying procedures during the guidance surveying of pipe jacking,including the control surveying,the central coordinate surveying of jacking hole and receiving hole,the guidance short-baseline surveying within the working shaft and the deviation surveying at the backseat center of tool head in the course of pipe jacking construction finally to guarantee the smooth run-through of pipe jacking.