TB880E型掘进机应用研究

由铁道部出资7．3亿元购置的2台TB880E型掘进机，先后完成了秦岭特长Ⅰ线隧道、磨沟岭隧道、桃花铺1号隧道的掘进任务，累计掘进长度22162m。这2台掘进机自2002年工程完工后，维修、保养、存放至今。TB880E型掘进机的正常使用寿命应在8000台班左右，可以完成35～40km隧道的掘进任务。此文结合秦岭特长隧道、乌鞘岭特长隧道施工方案，对掘进机与钻爆法的优缺点进行对比分析，探讨TBM剩余寿命期的利用问题，以期为今后选择合理的隧道建设方案提供参考。

Study of utilization of remaining service life of TB800E tunnel boring machine

The two TB880E tunnel boring machines bought at 730 million yuan paid for by the Ministry of Railways successively fulfilled the boring tasks of the Qinling extra - long line 1 tunnel, Mogouling tunnel and Taohuapu line 1 tunnel, for an accumulated bored length of 22 162 m. These two machines have been maintained , repaired and kept up to now since the completion of the aforesaid projects in 2002. The normal service life of a TB800E machine is about 8000 machine - teams, which can fulfill boring tasks of 35 40 km. This article, combined with the construction scheme of the Qinling and Wuxiaoling extra - long tunnels, makes a comparison and analysis of the merits and demerits of between the TB machine and the drilling ＆ blasting method, and probes into the utilization issue of the remaining life period of the TBM in a bid to orovide reference to selecting reasonable tunnel construction schemes in the future.