Channel Stability Analysis by One-Way Fluid Structure Interaction: A Case Study in China  

作　　者：Xiaobin Zhu Xiaoling Wang Minghui Liu Zhen Wang Xiaoxin Zhang 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China

出　　处：《Transactions of Tianjin University》2017年第5期451-460,共10页天津大学学报（英文版）

基　　金：supported by the National Basic Research Program of China (‘‘973’’ Program, No. 2013CB035906);the National Natural Science Foundation of China (No. 51439005);the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (No. 51621092)

摘　　要：Channel engineering stability with underground goafs is a complex three-dimensional problem, especially when considering channel leakage, and is influenced by a number of processes, such as seepage, fluid structure interaction (FSI), modeling, and selection of geological mechanical parameters. In this study, stability finite element analysis by one-way FSI was performed by establishing an integrated 3D engineering geological model. The extended Fourier amplitude sensitivity test was used to quantitatively assess the first-order and total sensitivities of the engineering model to critical geological mechanical parameters. Results illustrate that the channel engineering deformation is under a reasonable range and the elastic modulus is the highest total sensitivity parameter for the channel tilt and curvature at 0.7395 and 0.7525, respectively. Moreover, the most observable coupling effects for the curvature and horizontal strain are cohesion (0.1933) and density (0.7410), respectively. © 2017, Tianjin University and Springer-Verlag GmbH Germany.Channel engineering stability with underground goafs is a complex three-dimensional problem, especially when considering channel leakage, and is influenced by a number of processes, such as seepage, fluid structure interaction(FSI), modeling, and selection of geological mechanical parameters. In this study, stability finite element analysis by one-way FSI was performed by establishing an integrated 3D engineering geological model. The extended Fourier amplitude sensitivity test was used to quantitatively assess the first-order and total sensitivities of the engineering model to critical geological mechanical parameters. Results illustrate that the channel engineering deformation is under a reasonable range and the elastic modulus is the highest total sensitivity parameter for the channel tilt and curvature at 0.7395 and 0.7525, respectively. Moreover, the most observable coupling effects for the curvature and horizontal strain are cohesion(0.1933)and density(0.7410), respectively.

关 键 词：Elastic moduli Fluid structure interaction GEOLOGY STABILITY 

分 类 号：O35[理学—流体力学]