The geochemical, physical, and mechanical properties of natural rocks from different regions around the world are being studied to assess their suitability as high-temperature thermal storage materials [[5], [6], [7], [8]] this context, Nahhas et al. [7], conducted a study on four varieties of flint rocks accessible in the southern part of France, demonstrating their …
Feasibility study on natural cold energy utilization in negative temperature underground space rock mass in permafrost region of northeast China ... [12] research seasonal storage found that in the northeast region cold energy storage time ... located at 120°12′–122°55′E and 50°20′–52°30′N in the cold-temperate continental ...
The present study is aimed at examining coupled THM behavior in the rock mass around a high-temperature thermal energy storage cavern using TOUGH-FLAC simulator.
The thermal-hydrological-mechanical (T-H-M) behavior of rock mass surrounding a high-temperature cavern thermal energy storage (CTES) operated for a period …
The effects of the high penetration of variable energy resources on power systems and the evolution of flexibility in response to renewables are studied. ... the fracture patterns in the rock mass ...
In deep mining, much elastic energy is stored in rock mass due to the high geostress. Rockburst will be induced by accumulated energy during excavation.
High pre-tension bolt is an effective strata control technique and is the key to ensure the stability of anchorage and roadway. Based on the performances of high energy storage tension rock bolts ...
Based on the analysis of the data, it is concluded that the peak-strength strain energy storage index W E T P and residual elastic energy index A E F can reflect the energy and rockburst proneness of hard rock from the elastic energy storage and residual elastic energy. By designing the cyclic loading and unloading test and the uniaxial ...
The relationship between the dissipation energy and the release strain energy of rocks is shown in Fig. 3 (Xie et al. 2008), where U i d represents the energy consumed by the rock mass unit i, and U i e is the releasable elastic strain energy stored in the rock mass unit. From the viewpoint of thermodynamics, energy release is bidirectional.
Numerical models can be used to predict the rock mass as well as steel lining response to high internal pressure [20, [24], ... Exploring the concept of compressed air energy storage (CAES) in lined rock caverns at shallow depth: a modeling study of air tightness and energy balance. Appl Energy, 92 (2012), pp. 653-667.
The team found that the Craton soapstone performed best as a thermal energy storage rock. It absorbed, stored and transmitted heat effectively while staying stable and strong. This makes it ideal for electricity storage applications. The other rocks could be used for a lower-energy application, such a solar food dryer.
Rocks thermal energy storage is one of the most cost-effective energy storage for both thermal (heating/cooling) as well as power generation (electricity). This paper review both fundamental and appl...
Furthermore, it was found that the energy evolution of rock mass with a weak structural plane can be primarily classified into four stages, including storage of the initial energy, slip ...
The cavern wall is a critical component of the construction, responsible for transferring the load of high gas pressure to the adjacent rock mass. ... Exploring the concept of compressed air energy storage (CAES) in lined rock caverns at shallow depth: a modeling study of air tightness and energy balance. Appl Energy, 92 (2012), pp. 653-667.
The sandwiched rock pillar possessed high energy storage capacity and easily became the power source of high-energy shock events. Therefore, niche-targeting prevention and control should be performed. ... From the perspective of reducing the energy storage of the rock mass and cutting off the stress transmission route, the goal of the ...
Structural design and controllable synthesis are critical to the development of new materials for high-efficient energy storage and conversion [1]. Exploring various compositions and structures offers opportunities to find high-energy storage materials and active catalysts. ... Rock salt (Co 0.2 Cu 0.2 Mg 0.2 Ni 0.2 Zn 0.2)O: 1.61R: NSP: Li-ion ...
Recently, as the demand for energy storage grows, the underground lined rock caverns have been gradually applied in compressed air energy storage (CAES) projects (Kim et al., 2013, Kim et al., 2016, Park et al., 2016, Jiang et al., 2020, Xu et al., 2021). For instance, in China, there are currently more than ten CAES power stations under ...
For the case of excavation of deep rock mass, based on the determination of energy storage limit, the energy release process of high energy storage rock mass induced by transient unloading of in ...
The elastic strain energy of a rock sample can be divided into an energy storage phase and an energy release phase during the whole process of uniaxial compression.
Scenarios with different storage materials were analyzed, namely glass and steel were both modelled using water as the fluid phase. The main goal was to investigate the dependence of …
This phenomenon highlights the linear relationship between energy storage and dissipation in rock materials, highlighting consistent trends across different rock ... the negative impact of J v highlights the adverse influence of discontinuities on rock mass behaviour. High jointing density or poor joint conditions can significantly weaken the ...
mechanism in high energy storage rock masses Xing‑ping Lai1,2, Shuai Zhang1*, Peng‑fei Shan1,2, Feng Cui1,2, Yan‑binYang1 & Rui Bai1
TES in a rock bed represents a low-cost energy storage solution with a high heat-to-heat storage efficiency. This paper presents the construction and performance of a downscaled HTTES for power-to-heat or power-to-power applications with a thermal capacity of 1 MWh th. Selected results are compared to a previously built horizontal flow system ...
In recent years, major economies around the world have been actively promoting hydrogen as an energy source. To steer and advance the growth of the hydrogen energy industry, several nations, including the United States (Hydrogen Program Plan 2020), China, Japan, South Korea, Germany (National Hydrogen Energy Strategy), Australia, and several …
Underground hydrogen energy storage in lined rock caverns is an important means of addressing the instability of clean energy. To ensure the operational safety of the lining structure in lined rock caverns (LRCs) during underground hydrogen energy storage (UHES) when fault activation occurs, a numerical analysis model was established to evaluate the …
Large scale energy storage systems (ESS) are becoming more important for energy load leveling, particularly for equipping renewable energy sources. ... (EFG) method with cohesive crack growth to evaluate the fracture pattern in rock mass around a high pressurized tunnel under plane strain conditions. Evaluation is mainly on the influence of the ...
The elastic strain energy at the peak strength represents the energy storage limit of the rock mass and reflects its capability to resist damage. ... the stored high strain energy is released instantly. The damage time is longer, showing a number of slight degrees of local debris ejection, the ejection distance is closer, and a violent sound is ...
combination of high temperature thermal energy storage and bottom steam cycles has recently become an object of interest as a potential costeffective alternative to traditional ES.- In this study, a two-dimensional model of an existing high temperature thermal energy storage rock bed unit with 450 kWh. th. of thermal capacity is implemented.
In Southwest China large-scale hydropower projects, the hydraulic conductivity and fracture aperture within the rock mass of a reservoir bank slope has dramatically undergone a time series of evolution during dam abutment excavation, reservoir impounding and fluctuation operation, and discharge atomization. Accordingly, seepage control measures by hydro-structures such as …
A spectrum of repositories, depicted in Fig. 1, is viable for hydrogen storage rface storage options, such as storing hydrogen in its liquid state at sub-zero temperatures, have limited capacity and high costs and are more suitable for small-scale energy storage with short charging and discharging times [[20], [21], [22]].As the production of …
In this study, we perform a numerical study to investigate the storage of hydrogen in a lined rock cavern (LRC). We study two major aspects: (1) the effect of spatial …
This paper addresses a probabilistic design approach to underground rock caverns. The approach involves combining a point estimate method and numerical analysis. The approach''s validity was demonstrated by comparing it with an exact solution. The present approach was applied to a lined rock cavern for CNG storage. Probability-based structural …
Abandoned coal mine roadways are used to construct compressed air energy storage (CAES) caverns. However, the surrounding rock of the roadway is subjected to high internal pressure, which changes the stress state of the surrounding rock and causes rock deformation that directly affects the roadway stability. In this study, numerical simulation …
When the static stress does not exceed the elastic strength of the rock mass, the rock mass experiences elastic deformation, and a large amount of elastic strain energy will be stored inside the rock mass. During deep mining, rock excavation will cause redistribution of high static stress and dynamic loading on the rock mass.
DOI: 10.1016/j.jrmge.2022.03.006 Corpus ID: 248251301; Rock mass response for lined rock caverns subjected to high internal gas pressure @article{Damasceno2022RockMR, title={Rock mass response for lined rock caverns subjected to high internal gas pressure}, author={Davi Rodrigues Damasceno and Johan Spross and Fredrik Johansson}, journal={Journal of Rock …
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