ZHANG Tao, XIA Shu-guang, TAN Xian-kun, et al. Study on influence of fractrure structures on tunnel line and
construction of mountainous expressways[J]. 2005, 26(S2).
ZHANG Tao, XIA Shu-guang, TAN Xian-kun, et al. Study on influence of fractrure structures on tunnel line and
construction of mountainous expressways[J]. 2005, 26(S2).DOI:
Fracture structures of rock mass play an important role for the engineering properties. Expressway in building is located in fracture region of liangyun. The longest tunnel
Erdaoya Tunnel
is taken as a typical example in analysis. The rock classification and characteristic of the right and left tunnels are presented. Also
the influence of fracture region of Liangyun on them is studied. According to different rock classifications
the tunneling and supporting methods are analyzed. The construction effect and cost of the right and left tunnels are compared. The results show that the fracture structures have much influence on the construction and stability of the tunnels. In practice the geological investigation should pay more attention in choosing the expressway line. The tunnel should be far away from the fracture areas so that the construction may be safe