Assessment of plastic zones surrounding the power station cavern using numerical, fuzzy and statistical models

Rezaei, Mohammad; Rajabi, Morteza

doi:10.1007/s00366-019-00900-3

Cited by 14 publications

(1 citation statement)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rajabi et al [43] studied and predicted the maximum horizontal displacement of the power station cavern by using an artificial neural model. Rezaei and Rajabi [44,45] predicted the vertical displacement of the roof and floor of the powerhouse cavern and the plastic zone around the cavern through numerical simulation and other tools. ese studies are similar to this study in that all included a deformation numerical simulation of the underground powerhouse.…”

Section: Discussionmentioning

confidence: 99%

Deformation and Failure Analyses of the Surrounding Rock Mass with an Interlayer Shear Zone in the Baihetan Underground Powerhouse

Yuan

Shi

Zhou

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

In the process of underground cavern excavation, the existence of the interlayer shear zones or large faults often makes the surrounding rock tend to be unstable or even deformed. Under the influence of interlayer shear zone C2, different degrees of deformation and failure occurred in many parts during the excavation of the Baihetan left bank underground powerhouse. Based on field monitoring and numerical calculation, this paper studies the deformation and failure characteristics of the rock mass with C2 in the whole excavation process and the failure mechanisms are analyzed. The results show that C2 has poor mechanical properties. In the process of excavation, it mainly induces two failure modes: rock collapse and shear deformation, which specifically leads to rock collapses, large deformation and shotcrete cracking in the main powerhouse, and shear deformation in the omnibus bar caves. In addition, the similarities and differences between this study and other studies on the deformation and failure of surrounding rock of underground powerhouse in recent years are discussed, and the relevant treatment measures for C2 are given. The above research results can be a reference for other related studies.

show abstract

Section: Discussionmentioning

confidence: 99%

Deformation and Failure Analyses of the Surrounding Rock Mass with an Interlayer Shear Zone in the Baihetan Underground Powerhouse

Yuan

Shi

Zhou

et al. 2021

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

Spatiotemporal difference of deformation and failure affected by a large discontinuity in the surrounding rock mass: A case study at the Baihetan underground powerhouse

Shi,

Wang,

et al. 2024

Geological Journal

View full text Add to dashboard Cite

The deformation and failure of the surrounding rock mass is a key issue during the construction of large‐scale underground powerhouse, and large discontinuities are likely to cause this problem in the presence of complex geological structures. This article takes the right bank underground powerhouse of the Baihetan Hydropower Station as a case study. In this case, deformation mutation of the surrounding rock mass occurred in the south section of the main powerhouse, with the maximum deformation reaching 178 mm, and the deformation and failure of different parts showed differences. A comprehensive study integrating field survey, site monitoring, laboratory test and numerical simulation was carried out. By field survey and monitoring, characteristics of deformation and failure are described, and the spatiotemporal difference in deformation is analysed. The stress evolution during excavation is studied based on numerical simulations, the mechanical response of rock is derived through laboratory tests, and the mechanism of spatiotemporal difference is revealed. The results indicate that the main reason for the spatiotemporal difference is the presence of slightly inclining interlayer shear zone C4. In the south section, the excavation‐induced stress concentration at the arch was enhanced due to C4, with the maximum principal stress exceeding 70 MPa, and the high compressive stress here triggered the deformation mutation of surrounding rock mass. After undergoing a stress path from concentration to unloading, the surrounding rock mass at the downstream sidewall was seriously damaged, and its deformation also mutated under approximately vertical stress. The mutation resulted in the uneven spatial distribution, large increment and time‐dependent feature of deformation.

show abstract

Automated design of a new integrated intelligent computing paradigm for constructing a constitutive model applicable to predicting rock fractures

Peng

Amar

Ouaer

et al. 2020

Engineering with Computers

View full text Add to dashboard Cite

Assessment of plastic zones surrounding the power station cavern using numerical, fuzzy and statistical models

Cited by 14 publications

References 48 publications

Deformation and Failure Analyses of the Surrounding Rock Mass with an Interlayer Shear Zone in the Baihetan Underground Powerhouse

Deformation and Failure Analyses of the Surrounding Rock Mass with an Interlayer Shear Zone in the Baihetan Underground Powerhouse

Spatiotemporal difference of deformation and failure affected by a large discontinuity in the surrounding rock mass: A case study at the Baihetan underground powerhouse

Automated design of a new integrated intelligent computing paradigm for constructing a constitutive model applicable to predicting rock fractures

Contact Info

Product

Resources

About