Comprehensive analysis of surrounding rock stability of diversion tunnel of Pubugou Hydropower Station

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Tang, Wenjia^1 ; Zhou, Cairong^2 ; Huang, Xinzhou^3

Zhejiang Institute of Hydraulics and Estuary, Hangzhou

310000, China^1

Shanghai Municipal Engineering Design Institute(Group) Corporation Limited, Wuhan

430000, China^2

Hunan Polytechnic of Water Resources and Electric Power, Changsha

410000, China^3

关键词: Comprehensive analysis;    Excavation and support;    Finite element software;    Geological conditions;    Simulation and calculations;    Strain state analysis;    Surrounding rock stability;    Surrounding-rock stress;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/4/042014/pdf
DOI  :  10.1088/1755-1315/189/4/042014

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The geological conditions of the surrounding rock of the diversion tunnel of Pubugou Hydropower Station are complex. In order to review the structural design of the diversion tunnel and the stability of the supporting structure and surrounding rock, the finite element static calculation of the surrounding rock and supporting structure of the diversion tunnel of Pubugou Hydropower Station is carried out. Based on the large-scale finite element software ANSYS, the force calculation is carried out to simulate the ground excavation, diversion tunnel excavation, support and operation. It mainly studies the following aspects: (1) calculation and analysis of initial stress state of diversion tunnel; (2) simulation and calculation of construction excavation and support; (3) lining structure and surrounding rock stress during operation period Strain state analysis.