Results from in-situ monitoring of displacement, bolt load, and disturbed zone of a powerhouse cavern during excavation process

Li, Shouju; Yu, He; Liu, Yingxi; Wu, Fengji

doi:10.1016/j.ijrmms.2008.01.012

Cited by 39 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The occurrence and development of rock deformation is a comprehensive dynamic reflection of mechanical behavior, regardless of how complex the load mechanism, and its reaction can be reflected with deformation of rock mass. In-situ design personnel can assess the stability of surrounding rock most effectively and directly through monitoring deformation of the surrounding rock [6].…”

Section: The Fusion Of Underground Engineering Information and Damentioning

confidence: 99%

Deformation information management of underground engineering based on data mining technology

2010

2010 2nd IEEE International Conference on Information Management and Engineering

View full text Add to dashboard Cite

Security management is a urgent problem to solve for underground engineering because of nonlinear characteristics of rock mass. The method of combining data mining and monitoring information is proposed to manage the deformation of surrounding rock. Information recognition model of surrounding rock is established by using the BP neural network which has self-learning ability in the data mining technology, and the output is regard as the recognition results. Information management system of underground engineering is proposed to make decision on management level for recognition results, to make judgments and decisions on steady state of surrounding rock. The results show that this method can improve the accuracy of monitoring and safety of the project construction.

show abstract

Section: The Fusion Of Underground Engineering Information and Damentioning

confidence: 99%

Deformation information management of underground engineering based on data mining technology

2010

2010 2nd IEEE International Conference on Information Management and Engineering

View full text Add to dashboard Cite

show abstract

“…The excavation of the underground powerhouse will release the initial stress of the exposed rock mass at the boundary of the cavern, and further cause the redistribution of the rock mass stress field and displacement field [4] . Therefore, the use of reasonable support methods is particularly important for the stability of the surrounding rock of the underground powerhouse chamber group [5] .…”

Section: Introductionmentioning

confidence: 99%

Simulation analysis and effect evaluation of excavation and support of underground cavern group

Zhou

Huang

et al. 2020

E3S Web Conf.

View full text Add to dashboard Cite

According to the main construction procedures of underground caverns, an analysis model for the excavation of a certain pumping station underground cavern group was established, and its excavation and support process are dynamically simulated. The calculation schemes of unsupport and support are compared with indicators such as plastic zone, bolt axial force and displacement field distribution. The analysis results show that after the support, the plastic zone distribution and deformation characteristics of the rock around the cave are greatly improved. The bolt axial force also meets the requirements, indicating that the support parameters and support methods are reasonable. The supporting effect has been well simulated and realized.

show abstract

“…Among all the storage facilities, underground petrol storage cavern develops rapidly in recent years considering its safe, environmentally friendly, and economical features (Benardos and Kaliampakos, 2005; Lee et al., 1996). Since the large scales, multiply excavation faces and long-term usage of underground water-sealed petrol storage caverns, researches on the strength and damage of the surrounding rock mass under the comprehensive water–petrol–gas effects are of great importance (Li et al., 2008; Qiao et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

An elastic–plastic damage model considering capillary effect for petrol–water saturated sandstone

Yang

Luo

et al. 2017

International Journal of Damage Mechanics

View full text Add to dashboard Cite

The mechanical behavior of surrounding rock mass is key important to the water-sealed petrol storage caverns because of the two phase environment. To investigate the strength and damage mechanism of rock mass under petrol–water immersion circumstance, an elastic–plastic damage constitutive model is proposed. The deformation work of rock mass is derived according to the mixture theory and averaging methods. In order to further study the capillary action influence of petrol–water liquid phase on the strength and stiffness of rock mass, the plastic yield condition considering petrol–water circumstance is proposed. Then, the stress–strain increment expression under the influence of both liquid and solid phase is deduced through the consistency condition. Meanwhile, the damage conditions of the rock mass under tensile and compressive stress differ a lot, so the rock mass damage model under petrol–water circumstance is established combining the tensile and compressive damage criterion and the damage evolution law. The proposed constitutive model is adopted to simulate the mechanical property and damage evolution feature of rock mass under axial compression. The results suggest that the increase in the petrol pressure leads to the improvement of the axial strength for rock mass and meanwhile, the occurrence of damage is also advanced. In addition, the elastic–plastic property of the rock material has been well developed below the stress peak point during this process. Ultimately, the proposed elastic–plastic damage constitutive model was verified by making comparisons between the theoretical calculating results and experimental results.

show abstract

Results from in-situ monitoring of displacement, bolt load, and disturbed zone of a powerhouse cavern during excavation process

Cited by 39 publications

References 9 publications

Deformation information management of underground engineering based on data mining technology

Deformation information management of underground engineering based on data mining technology

Simulation analysis and effect evaluation of excavation and support of underground cavern group

An elastic–plastic damage model considering capillary effect for petrol–water saturated sandstone

Contact Info

Product

Resources

About