东秦岭特长隧道工程施工技术要点综述

介绍东秦岭特长隧道工程正洞及平行导坑的设计标准、施工技术要点。全面介绍该隧道施工测量与测试、隧道开挖与支护、防排水、施工通风与防尘、施工机具及配套、弹性整体道床等方面的技术 ,解决了GPS定位引导、长距离独头通风、有轨与无轨运输设备相配套、软弱围岩的超前防坍塌预支护、光面爆破、无滴渗防水、复合式衬砌、弹性整体道床的半机械化铺设等多项技术难题

A Summary of Key Technical Points for Construction of East Qinling Super-long Tunnel

Design code and key technical points for main tunnel and parallel heading of East Qinling Super-long Tunnel are introduced. An overall introduction is given on such technologies as construction survey and testing, tunnel boring and supporting, water handling, ventilation and dust control, construction equipment, and elastic monolithic track bed, etc. Many difficult technical problems were solved like GPS position guidance, long distance single head ventilation, matching of track transport and trackless transport equipment, pre-supporting of weak surrounding rock, smooth blasting, non-seepage waterproofing, composite lining, semi-mechanized laying of elastic monolithic track bed, etc.