Stability Analysis of Surrounding Rocks of Diversion Tunnel
In combination with the water diversion project of guan yin ge reservoir of Ben Xi city, 3D solidmodel of deep -buried diversion tunnel is established.The K20 + 880 ~ K20 + 820 section of water tunnel from Guan Yin ge reservoir into Ben Xi city is analyzed and evaluated by FLAC3D.From the analyzed distribution of surrounding rock stress, the deflection of the size and the plastic zone distribution having a comprehensive analysis of surrounding rock stability after the tunnel excavated.Analysis showed that; after the tunnel excavated, There have been different degrees of pressure stress concentration zone at the at the top and sidewall of the tunnel, in which the sidewall has been a greater horizontal extrusion pressure; Tensile stress value is greater than the tensile strength of rock in the tunnels right upper arch angle and lower left arch angle at the tensile stress concentration area, so that it will be tensile failure at the two arch angles, which is bad for stability of the surrounding rock.
FLAC3D diversion tunnel numerical simulation stability of surrounding rock mass
Miao Mengmeng Yang Zirong
College of Mines,Liaoning Technical University,Fuxin Liaoning,123000,China
国际会议
the 4th International Symposium on Mine Safety (2012) 第四届国际矿山安全学术研讨会(2012)
阜新
英文
5-8
2012-08-04（万方平台首次上网日期，不代表论文的发表时间）