Dam foundation optimization and dynamic design research of Shannipo arch dam

2015 ◽  
pp. 285-292
Keyword(s):  
Design Research ◽  
Arch Dam ◽  
Dynamic Design ◽  
Dam Foundation

Arch Dam Deformation Prediction Model Based on PSO-SVM

2013 ◽  
Vol 351-352 ◽  
pp. 1306-1311 ◽  
Author(s):  
Jing Yang Liu ◽  
He Zhi Liu
Keyword(s):  
Prediction Model ◽  
Large Scale ◽  
Small Sample ◽  
Arch Dam ◽  
Support Vector ◽  
Model Parameters ◽  
Deformation Prediction ◽  
Dam Foundation ◽  
Model Based ◽  
Dam Deformation

Arch dam has gradually evolved as one of dam type as main large-scale hydraulic project, dam deformation prediction is an important part of dam safety monitoring, and it is difficult to forecast because of the complicated nonlinear characteristics of the monitoring data. Support Vector Machine (SVM) could solve the small sample, nonlinear high dimension problem due to the excellent generalization ability, and hence it has been widely used in the forecast of arch dam deformation. However, the forecast results considerably depend on the choice of SVM model parameters. In this paper, Particle Swarm Optimization (PSO), which has the characteristic of fast global optimization, was applied to optimize the parameters in SVM, and then the dam deformation prediction model based on PSO-SVM could be established. The model is applied to a certain arch dam foundation prediction. The accuracy of this employed approach was examined by comparing it with multiple regression method. In a word, the experimental results indicate that the proposed method based on PSO-SVM can be used in arch dam deformation prediction.

Seepage Regime in Canyon Mass With Influence of Water-Storage Reservoir Impoundment Speed

2008 ◽  
Author(s):  
M. Kalabegishvili
Keyword(s):  
Rock Mass ◽  
Water Level ◽  
Peak Load ◽  
Water Storage ◽  
Energy System ◽  
Arch Dam ◽  
Dam Foundation ◽  
Storage Reservoir ◽  
Functional Relations ◽  
Nonstationary Field

Generally, most waterpower plants have to function under energy system peak load operation. Thus, there is a relatively quick water level variation observed in water-storage reservoirs, which contributes to the problems, especially in case of high-pressure waterworks facilities. Swift reservoir draw-down enhances seepage volumetric forces acting from the rock mass, which may lead to rock mass cracking and eventually to the development of landslide processes. A rapid impoundment of the water-storage reservoir is no less damaging. In this case, seepage in the rock mass is progressing in non-steady conditions, there occurring, in the inception stage: - high magnitude seepage hydrodynamic forces at the rock mass surface, creating additional loads on the rock mass, causing deflection of its surface, which may promote dam-foundation contact opening; - with increased pore pressures and seepage gradients, there may occur suffusion and other undesirable processes in the rock mass. In the work is given a numerical analysis of some parameters of seepage mode given based on right-bank investigation admitting presence of break in the dam filling-up mode. Options of time-intervals for the two basic versions – in case of sudden rising of water level in the upstream and in case of slow filling-up and setting up steady-state seepage mode in the massive – are being discussed. Determination of seepage flow parameters (including gradients) requires nonstationary field task to be solved. Finite-elements approximation for time analysis of the task is solved by finite-difference scheme. Seepage calculations are carried out by cyclic-iteration scheme – where volumetric water content, hydraulic conductivity and elasticity module determined numerically by functional relations. The subject of research is Enguri waterpower plant arch dam, at present the highest in the world (Georgia, height 271.5m, fig. 1.1). Consideration is being given to a variety of cases: - canyon slope in the zone of major geological fracture; - foundation in the central part of the dam.

Seismic fragility analysis of a High Arch Dam-Foundation System based on seismic instability failure mode

2020 ◽  
Vol 130 ◽  
pp. 105981 ◽  
Author(s):  
Hui Liang ◽  
Jin Tu ◽  
Shengshan Guo ◽  
Jianxin Liao ◽  
Deyu Li ◽  
...  
Keyword(s):  
Failure Mode ◽  
Arch Dam ◽  
Fragility Analysis ◽  
Seismic Fragility ◽  
High Arch Dam ◽  
Dam Foundation

Study on Deformation and Control Measures of Columnar Jointed Basalt for Baihetan Super-High Arch Dam Foundation

2017 ◽  
Vol 51 (8) ◽  
pp. 2569-2595 ◽  
Author(s):  
Qixiang Fan ◽  
Zhilin Wang ◽  
Jianrong Xu ◽  
Mengxia Zhou ◽  
Quan Jiang ◽  
...  
Keyword(s):  
Arch Dam ◽  
Control Measures ◽  
High Arch Dam ◽  
Dam Foundation ◽  
Columnar Jointed Basalt ◽  
And Control

Seismic stability assessment of an arch dam-foundation system

2015 ◽  
Vol 14 (3) ◽  
pp. 517-526 ◽  
Author(s):  
Jianwen Pan ◽  
Yanjie Xu ◽  
Feng Jin ◽  
Jinting Wang
Keyword(s):  
Arch Dam ◽  
Seismic Stability ◽  
Stability Assessment ◽  
Dam Foundation

Nonuniform earthquake input for arch dam–foundation interaction

1999 ◽  
Vol 18 (7) ◽  
pp. 487-493 ◽  
Author(s):  
T Szczesiak ◽  
B Weber ◽  
H Bachmann
Keyword(s):  
Arch Dam ◽  
Dam Foundation
Sign in / Sign up

Export Citation Format

Share Document