Seepage analysis and control of core-wall rockfill dam and underground powerhouse caverns in Shuangjiangkou hydropower station, China

2019 ◽  
pp. 757-768
Author(s):  
B. Duan ◽  
Z.H. He ◽  
J. Yan ◽  
J.J. Yan ◽  
X.C. Peng
Keyword(s):  
Hydropower Station ◽  
Seepage Analysis ◽  
Underground Powerhouse ◽  
Rockfill Dam ◽  
And Control

scholarly journals Deformation analysis of underground powerhouse of a large hydropower station based on FLAC3D

2021 ◽  
Vol 632 ◽  
pp. 042033
Author(s):  
Shuai Ma ◽  
Taosheng Huang ◽  
Xiaojun Bao ◽  
Zhiyuan Wang ◽  
Haotian Zhang ◽  
...  
Keyword(s):  
Hydropower Station ◽  
Deformation Analysis ◽  
Underground Powerhouse

scholarly journals Study on Vibration Transmission among Units in Underground Powerhouse of a Hydropower Station

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3015 ◽  
Author(s):  
Jijian Lian ◽  
Hongzhen Wang ◽  
Haijun Wang
Keyword(s):  
Low Frequency ◽  
Field Tests ◽  
Vertical Vibration ◽  
Transmission Mechanism ◽  
Structural Vibration ◽  
Hydropower Station ◽  
Fe Model ◽  
Vibration Transmission ◽  
Underground Powerhouse ◽  
Mechanical Models

Research on the safety of powerhouse in a hydropower station is mostly concentrated on the vibration of machinery structure and concrete structure within a single unit. However, few studies have been focused on the vibration transmission among units. Due to the integrity of the powerhouse and the interaction, it is necessary to study the vibration transmission mechanism of powerhouse structure among units. In this paper, field structural vibration tests are conducted in an underground powerhouse of a hydropower station on Yalong River. Additionally, the simplified mechanical models are established to explain the transmission mechanism theoretically. Moreover, a complementary finite element (FE) model is built to replicate the testing conditions for comprehensive analysis. The field tests results show that: (1) the transmission of lateral-river vibration is greater than those of longitude-river vibration and vertical vibration; (2) the vibration transmission of the vibrations that is caused by the low frequency tail fluctuation is basically equal to that of the vibrations caused by rotation of hydraulic generator. The transmission mechanism is demonstrated by the simplified mechanical models and is verified by the FE results. This study can provide guidance for further research on the vibration of underground powerhouse structure.

Numerical analysis of the anti-seepage measures for high earth rockfill dam on deep overburden

2012 ◽  
Vol 170-173 ◽  
pp. 1872-1877 ◽  
Author(s):  
Jun Yan ◽  
Si Hong Liu ◽  
Bin Zhou
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Seepage Field ◽  
Seepage Analysis ◽  
The Real ◽  
Rockfill Dam ◽  
The Stability ◽  
High Rockfill Dam ◽  
At Home

The anti-seepage measures of a high earth rockfill dam built on the foundation with a deep overburden affects the stability and safety of the dam greatly. Nowadays there are few researches on this area both at home and abroad. On the basis of the finite element seepage analysis of the Pubugou high rockfill dam in which core walls and two cut-off walls are designed as the anti-seepage measures, the real seepage behavior of the seepage field is obtained in this paper, as well as the seepage characters of the seepage field under different arrangements of the cut-off walls. The conclusions have a certain referential value for the design of the anti-seepage measures for the similar projects with the foundation of a deep overburden.

scholarly journals Key rock mechanical problems of underground powerhouse in Shuibuya hydropower station

2011 ◽  
Vol 3 (1) ◽  
pp. 64-72 ◽  
Author(s):  
Aiqing Wu ◽  
Qigui Yang ◽  
Xiuli Ding ◽  
Huoming Zhou ◽  
Bo Lu
Keyword(s):  
Hydropower Station ◽  
Underground Powerhouse

Stability Analysis of Surrounding Rocks of Underground Powerhouse in a Hydropower Station

2014 ◽  
Vol 1030-1032 ◽  
pp. 1068-1073
Author(s):  
Jun Hu ◽  
Xiao Peng Yu
Keyword(s):  
Stability Analysis ◽  
Side Wall ◽  
Hydropower Station ◽  
Computation Result ◽  
Underground Powerhouse ◽  
Distribution Rules ◽  
High Side ◽  
Underground Caverns ◽  
The Stability ◽  
Supporting Structures

The underground powerhouse of a hydropower station is a typical large-span and high side wall cavern group. The stability analysis of high side wall and the rock between caverns is key for cavern design. Based on the process of excavation and anchorage of underground caverns, FLAC3D numerical modeling technique is used to dynamically analyze the distribution rules and variation features of the second stress field, displacement field plastic zones in the rock masses surrounding the caverns before construction of anchorage support and the loads carried by the supporting structures. The computation result shows that the opening's lay out, construction sequence and support parameters are rational.

Research on the Bearing Capacity for Rock Bolt Crane Girder in the Underground Powerhouse of Large Hydropower Station

2011 ◽  
Vol 255-260 ◽  
pp. 3563-3567
Author(s):  
Jian Bin Xie ◽  
Tian Chun He ◽  
Ji Yao ◽  
Chen Bo Zi
Keyword(s):  
Bearing Capacity ◽  
Design Criterion ◽  
Rock Bolt ◽  
Hydropower Station ◽  
Safe Operation ◽  
Underground Powerhouse ◽  
Geological Conditions ◽  
Enterprise Standard ◽  
The Stability ◽  
Rock Section

In this paper, according to the reality that there is no mature Chinese national design criterion but partial enterprise standard for rock bolt crane girder in the underground powerhouse of large hydropower station up to now. Based on the geological conditions, the rock bolt crane girder was designed by using method of rigid body equilibrium. The reinforced anchoring measures for rock bolt crane girder in undesirable geology were studied subsequently by the experience of analogous projects. The stability of rock bolt crane girder in underground powerhouse was analyzed and evaluated by Finite Element Method (FEM). Then the bearing capacity of crane beam was researched by means of bearing testing. The results show FEM is practicable to evaluate the stability of the rock bolt crane girder and to guide the rock bolt crane girder designing. The results also show the reinforced anchoring measures are appropriate to displace the undesirable surrounding rock section by using concrete. The results of bearing testing show that the design of rock bolt crane girder and its anchoring measures are rational, and crane girder can meet to the requirement of safe operation.

scholarly journals Engineering rock mechanics practices in the underground powerhouse at Jinping I hydropower station

2016 ◽  
Vol 8 (5) ◽  
pp. 640-650 ◽  
Author(s):  
Aiqing Wu ◽  
Jimin Wang ◽  
Zhong Zhou ◽  
Shuling Huang ◽  
Xiuli Ding ◽  
...  
Keyword(s):  
Rock Mechanics ◽  
Hydropower Station ◽  
Underground Powerhouse ◽  
Jinping I Hydropower Station
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