Study on Support Type for Weak Zone of Diversion Tunnel under High Geo-stress and High Seepage Pressure Condition
The diversion tunnel for Jinping II hydropower station is located in western China with high mountains and great gorge. The problems of high geo-stress and high seepage pressure are prominent. Reasonable support type for weak zone of the diversion tunnel is studied by using FLAC(3D) (Fast lagrangian analysis of continua in 3 dimensions) numerical program based on coupled fluid-mechanical theory. According to the numerical results, recommend scheme of supporting design for weak zone of the diversion tunnel under high geo-stress and high seepage pressure condition is proposed. The study results indicate that combinational support type including bolting, shotcrete, consolidation grouting and lining is effective to solve the stability problems of surrounding rockmass of weak zone under high geo-stress and high seepage pressure condition.
diversion tunnel seepage high geo-stress coupled fluid-mechanical analysis support
SU Guoshao FU Xinyi
College of Civil and Architecture Engineering, Guangxi University, P.R.China, 530004 State Key Labor College of Civil and Architecture Engineering, Guangxi University, P.R.China, 530004
国际会议
2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)
武汉
英文
333-337
2009-04-26（万方平台首次上网日期，不代表论文的发表时间）