Comprehensive evaluation of the stability of the left-bank slope at the Baihetan hydropower station in southwest China

Xu, Nuwen; Wu, Jiayao; Dai, Feng; Fan, Yilin; Li, Tao; Li, Biao

doi:10.1007/s10064-017-1018-3

Cited by 38 publications

(16 citation statements)

References 23 publications

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“…The project has a double-curvature arch dam with a height of 289 m and a total installed capacity of 16,000 MW. The underground powerhouse's cavern systems are located in both the left and right bank mountains, 350 m downstream from the dam, with horizontal and vertical depths of 110-380 m and 160-420 m, respectively [25,26]. The left bank is the southeast slope of the Daliang Mountain region, with a peak height of 2600 m, and it has a sloped terrain inclined towards the Jinshajiang River.…”

Section: Project Overviewmentioning

confidence: 99%

“…The characteristics of the main interlayer rock mass and faults are listed in Tables 1 and 2, respectively. According to in situ stress measurements, the maximum principal stress is σ 1 = 8-11 MPa, the medium principal stress is σ 2 = 7-9 MPa, and the minimum principal stress is σ 3 = 6-8 MPa [25][26][27].…”

Section: Project Overviewmentioning

confidence: 99%

“…Photographs of the spandrel groove high slopes after excavation. (a) The aerial view of the rock slopes and (b) a partially enlarged detail of the left bank slope[26] (Copyright © 2017, Springer Nature).…”

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Deformation Analysis of Large-Scale Rock Slopes Considering the Effect of Microseismic Events

et al. 2019

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To research the macroscopic deformation of rock microseismic damage, a high-precision microseismic monitoring system was established on the left bank slope of the Baihetan hydropower station in Southwestern China. Based on the microseismic monitoring and field deformation data, the seismic source radius was applied to characterize the rock fracture scale. Numerical simulations introduced the rock micro-fracture information into the three-dimensional numerical model of the left bank slope and established the damage constitutive model. The unloading deformation process of the left bank abutment rock mass is described by numerical calculations. The feedback analysis method considering the effect of microseismic damage is preliminary exploratory research, which provides a new idea for the stability analysis of similar high rock slopes.

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Section: Project Overviewmentioning

confidence: 99%

Section: Project Overviewmentioning

confidence: 99%

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Deformation Analysis of Large-Scale Rock Slopes Considering the Effect of Microseismic Events

et al. 2019

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“…e MS technique method is increasingly becoming one of the mainstream methods for in situ stability monitoring of geotechnical engineering. Numerical simulation and MS are combined to make the research more fully validated [182,183]. e study of rockmass reliability considering MS loads also provides a new idea for rockmass stability analysis [184].…”

Section: Microseismic (Ms) Techniquementioning

confidence: 99%

Dynamic Stability Analysis of Rockmass: A Review

Dong

Wang

et al. 2018

Advances in Civil Engineering

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ere are a series of human or natural activities, including earthquakes, explosions, and rockbursts, which have caused a number of safety accidents in geotechnical engineering. is review paper summarized the theories and methods for dynamic stability analysis of rockmass. First, numerical simulation methods, including finite element method (FEM), discrete element method (DEM), finite difference method (FDM), boundary element method (BEM), discontinuous deformation analysis method (DDA), and numerical manifold method (NMM), are summarized. Second, the laboratory experiments, containing shaking table test, split-Hopkinson pressure bar test (SHPB), improved true-triaxial test, dynamic centrifugal model test, acoustic emission (AE) technique, and dynamic infrared monitoring, are considered. ird, the in situ tests including microseismic (MS) technique, velocity tomography, stress-strain monitoring, and electromagnetic radiation monitoring are considered. Finally, some comprehensive analysis methods based on statistical theories are also provided. It is pointed out that the study foundation for the dynamic stability of rockmass is weak to explain the mechanism. So, a set of general comprehensive theories integrating the different methods, including theoretical analysis, numerical methods, laboratory experiments, and in situ tests, should be completely established. is is the most effective way for further investigation.

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Stability Analysis of Tailrace Outlet Slope at Right Bank of Kala Hydropower Station

Pan,

Hu,

et al. 2024

Lecture Notes in Civil Engineering

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The tailrace outlet slope located on the right bank of the Kala hydropower station represents a typical bedding slope characterized by a moderate to large dip angle. The excavation at the toe of the slope create favourable conditions for rock mass deformation and failure. In order to evaluate the slope’s stability, a thorough investigation and analysis of the engineering geological conditions are conducted. Additionally, the stress-strain characteristics resulting from the slope excavation are simulated utilizing the discrete element software 3DEC. Finally, the strength reduction method is used to evaluate the safety factor of the slope. The research results show that the stability of the slope is notably influenced by the presence of medium and large dip structural planes, the cutting excavation at slope toe can lead to deformation and localized block instability. The implementation of the system pre-stressed cables effectively increases the safety factor of the slope and ensures the stability of the tailrace outlet slope. These findings will provide valuable references for the design of similar rock slopes.

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Comprehensive evaluation of the stability of the left-bank slope at the Baihetan hydropower station in southwest China

Cited by 38 publications

References 23 publications

Deformation Analysis of Large-Scale Rock Slopes Considering the Effect of Microseismic Events

Deformation Analysis of Large-Scale Rock Slopes Considering the Effect of Microseismic Events

Dynamic Stability Analysis of Rockmass: A Review

Stability Analysis of Tailrace Outlet Slope at Right Bank of Kala Hydropower Station

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