Failure Characteristics and the Mechanical Effect of Mica Schist
in an Anchored Tunnel
(1 Faculty of Engineering, China University of Geosciences, Wuhan 430074; 2 Engineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Wuhan 430074)
Abstract：
In a deep mica schist stratum, the anchor bolt support structure of a tunnel will frequently fail, resulting in large surrounding-rock deformation and endangering the safety of tunnel construction and reliability of the structure. Combining field experiments and numerical calculations, the characteristics of stress-strain and forms of loosening circles around a tunnel in a mica schist stratum are analyzed and the stress relationship and failure characteristics of the anchor-rock complex in a mica schist stratum are studied, providing a reference for support design, rock deformation control, and disaster prevention in mica schist and stratified anisotropic rock masses.
ZUO Chang-Qun-1,
2 ,
Ding-Shao-Lin-1 etc
.Failure Characteristics and the Mechanical Effect of Mica Schist
in an Anchored Tunnel
[J] MODERN TUNNELLING TECHNOLOGY, 2014,V51(4): 39-45
2014, Vol. 51 