特长隧道双向施工贯通技术分析

Technical Analysis of Bidirectional Construction Penetration of Extra-long Tunnel

特长隧道多采用双向掘进施工方式,贯通误差是施工控制的关键。文章分析了贯通误差产生的原因,并结合工程实例,介绍了特长隧道双向施工中控制贯通误差的相应措施。

The bidirectional tunneling construction method is mostly adopted for the extra-long tunnels,and the penetration error is the key to construction control.This article analyzed the causes of penetration error,and introduced the corresponding measures to control the penetration error during the bidirectional construction of extra-long tunnel in combination with the engineering examples.