SPOT MONITORING OF BIFURCATION TUNNEL AND COUNTERMEASURES OF CONSTRUCTION TECHNOLOGIES
With less unitary cost for joint bridge-tunnel projects, bifurcation tunnel looks promising in the construction of transportation infrastructure. As a new type of tunnel, the excavation manner and support style of bifurcation tunnelling should be adequately investigated in order to ensure the structural stability. Along with the case of the Baziling tunnel, the contents, technique and method of spot monitoring system for bifurcation tunnel are described in detail. The focus of the work is on the surface subsidence, rock deformation, bolt axial stress, and so on. The properties of the deformation and stress in the surrounding rock and supporting system are further analyzed. Blasting dynamic characteristics of rock vibration for the neighborhood segment are also presented. Numerical analysis is done to find out the least appropriate thickness of interval rock column. Finally, the countermcasures for the construction technologies of the bifurcation tunnel are listed.
LI-YUAN YU SHU-CAI LI XIAO-HONG GUO MING-BIN WANG
Research Center of Geotechnical and Structural Engineering, Shandong University Jinan, 250061, P.R.C CCCC Second Highway Consultants Co.Ltd Wuhan, 430056, PR.China School of Science, Shandong Jianzhu University Jinan, 250101, P.R.China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1539-1546
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）