A Study of the Failure Features and Stability of Surrounding Rock of the Chuanzhusi Tunnel Passing Through the Ancient Landslide
(1 State Key Laboratory of Geo-Hazard Prevention and Geo-Environment Protection, Chengdu University of Technology, Chengdu 610059; 2 Public Geological Survey Management Center in Anhui Province, Hefei 230040)
Abstract：
Based on the geological conditions of the Chuanzhusi Tunnel, which passes through an ancient landslide, a site investigation found that the surrounding rock deformation and failure modes of the tunnel are mainly tunnel collapse, spalling and dropping. The three-dimensional finite element numerical simulation of the stability of surrounding rock by FLAC3D showed that the self-stability of the fractured rock mass is poor and the deformation modes are mainly of the elastic-plastic and relaxation varieties. Support with an H-beam steel framework played a positive role regarding the stability of fractured surrounding rock
LIU Hai-1,
2 ,
SHEN Jun-Hui-1 etc
.A Study of the Failure Features and Stability of Surrounding Rock of the Chuanzhusi Tunnel Passing Through the Ancient Landslide[J] MODERN TUNNELLING TECHNOLOGY, 2012,V49(1): 53-59
2012, Vol. 49 