特长隧道

• With the rapid development of the state highway construction , it becomes more and more important for the study of stability of peripheral surrounding rock and its forced condition of the structure during construction of railway or highway tunnels , especially of those long or extra - long tunnels
  随着我国高速公路建设的高速发展，铁路、公路隧道，特别是长大和特长隧道施工过程中洞室周边围岩的稳定性与结构受力状态的研究日益显得重要。