摘要
Abstract
With the development of modern transportation co- nstruction, the construction party, in line construction, encoun- tered a number of extra long tunnel excavation. Tunnel constr- uction ventilation technology, has an important position in tu- nnel construction, for it has become an important factor rest- ricting the tunnel construction speed, and the efect of ventila- tion of tunnel.关键词
特长隧道/通风技术/管理Key words
extra long tunnel/ventilation technology/mana- gement
