Application of FBG to 3D geomechanical model test of large underground caverns

被引:0
|
作者
Zhu Wei-shen [1 ]
Zheng Wen-hua [1 ]
Zhu Hong-hu [2 ]
Zhang Qian-bing [1 ]
Yin Jian-hua [2 ]
机构
[1] Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250061, Shandong, Peoples R China
[2] Hong Kong Polytech Univ, Dept Civil & Struct Engn, Hong Kong, Hong Kong, Peoples R China
关键词
underground caverns; geomechanical model test; fiber Bragg grating(FBG); numerical simulation;
D O I
暂无
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Geomechanical model test is an important research method to study the large underground caverns under complex conditions, this method can reflect the geological structure and powerhouse structure more truly, simulate the excavation of caverns which have influence on the stability of surrounding rock more precisely and reveal the failure characteristics of the rock. The 3D geomechanical model test of Shuangjiangkou large underground caverns is carried out. In the test, we choose the high precision FBG to measure the displacment of monitoring points and make a reservation pore and pour glue later to bury FBG. At the same time, we use the three- dimensional fast Lagrangian analysis of continua method to simulate the excavations, and make a comparison. The results show that: FBG solves the problem that the test has small deformation, but very high precision requirement. The results of the FBG agree well with numerical simulation results. In the test, it is successful to bury FBG. FGB measures the displacments of monitoring points effectively regardless of the excavation stage or the overload stage; the results reveal deformation mechanism and failure characteristics of the 3D geomechanical model. Key words: underground caverns; geomechanical model
引用
收藏
页码:3342 / 3347
页数:6
相关论文
共 10 条
  • [1] HU Ji-ping, 2008, ELECT TEST, P10
  • [2] [姜德生 Jiang Desheng], 2003, [传感器技术, Journal of Transducer Technology], V22, P7
  • [3] JIANG Ying, 1999, STUDY OPTICAL COMMUN, V91, P55
  • [4] LI Zhong-kui, 2002, J HYDRAULIC ENG, V33, P31
  • [5] [王冬生 WANG Dongsheng], 2008, [仪表技术与传感器, Intstrument Technique and Sensor], P6
  • [6] WANG Ri-guang, 2007, J ARCHITECTURE CIVIL, V24, P51
  • [7] Wu A.Q., 2001, CHINESE J ROCK MECH, V20, P690
  • [8] [杨为民 Yang Weimin], 2005, [岩土工程学报, Chinese Journal of Geotechnical Engineering], V27, P230
  • [9] [朱鸿鹄 ZHU Honghu], 2008, [岩石力学与工程学报, Chinese Journal of Rock Mechanics and Engineering], V27, P1188
  • [10] [朱维申 ZHU Weishen], 2008, [岩石力学与工程学报, Chinese Journal of Rock Mechanics and Engineering], V27, P1308