钢管并顶穿越亮马河

在北京三里屯热力管线铺设的工程中，运用土压平衡机械顶管技术，采取双管并顶的施工方法，同时将两根钢管顶推穿越了亮马河。钢管与混凝土管在顶管施工中有许多不同之处，本文结合工程实际，介绍了钢管顶进的一些特点。

Mechanical Pipe Jacking Operation of Double Pipes Simultaneously Passing Through the Liangma River

In the project of laying the central heating pipes in Sanlitun in Beijing,double pipes were operated at the same time by the pipe jacking machine to pass through the Liangma River. There are many differences in the pipe jacking operation between the steel pipes and the concrete pipes. Based on the practical operation,we explain some features of jacking the steel pipes.