Construction simulating and controlling of the two-well-vertical(TWV) salt caverns with gas blanket

Jiang, Deyi; Li, Zhengyi; Liu, Wei; Ban, Fansheng; Chen, Jie; Wang, Yifan; Fan, Jinyang

doi:10.1016/j.jngse.2021.104291

Cited by 28 publications

(11 citation statements)

References 33 publications

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“…Because of their excellent confinement safety, cost-effectiveness, and stability, underground gas storages (Xiong et al, 2021) have received widespread attention as national energy reserves that can be used for nuclear waste disposal (Li et al, 2014;Mahlia et al, 2014). currently, there are three main types of underground energy reservoirs: 1) underground salt cavern gas reservoirs (Deyi et al, 2016;Fan et al, 2019;Fan et al, 2020;Peng et al, 2020; with crystalline structures (Jiang et al, 2021), high denseness (Kang et al, 2021), high ductility (strain can reach almost 30-40%) (Liu et al, 2020a), low permeability (<10 −20 m 2 ) (Liu et al, 2020b), ultra-low porosity (<1%) and self-healing characteristics (Urai et al, 1986), which comprise salt rock as the constitutive medium; 2) depleted oil and gas reservoirs formed by the transformation of non-operational wells (Wang et al, 2021); 3) underground water-sealed gas/oil reservoirs wherein oil and liquid gas are sealed in large underground caverns that have been excavated (Chung et al, 2009;Lee and Lim, 2010).…”

Section: Introductionmentioning

confidence: 99%

Disturbance and Control of National Strategic Gas Storage Induced by Adjacent Tunnel Blasting

Lin

Liu

et al. 2022

Front. Earth Sci.

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Underground gas storage are often subject to external dynamic loads, blast vibrations, and seismic disturbances, since they function as backup areas for the strategic national energy reserve, supply and demand dispatch, and gas and energy storage. Currently, the research on dynamic response characteristics, dynamic stability, and disturbance control of underground gas storages under dynamic loads is still incomplete and of great practical importance to ensure national strategic security. Therefore, this paper takes the blasting project of the Sansheng tunnel, which passes through the national strategic gas storage reservoir, as the engineering background. Based on the geological conditions and rock characteristics, the dynamic response characteristics of the rock surrounding the tunnel and gas storage are studied using the finite element method. The peak vibration velocity distribution of the surrounding rocks at different blasting source distances is analyzed and compared with the theoretical formula. Subsequently, an asymmetric uncoupled blasting vibration control technique is proposed and used for field blasting. The results show that the numerical results are consistent with the theoretical formula. The blasting vibration velocity decreases exponentially with an increase in the blasting source distance. Overall, the proposed technique significantly decreases the average peak vibration velocity by 22.64% compared to the original vibration velocity.

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Section: Introductionmentioning

confidence: 99%

Disturbance and Control of National Strategic Gas Storage Induced by Adjacent Tunnel Blasting

Lin

Liu

et al. 2022

Front. Earth Sci.

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“…In the context of carbon peak and carbon neutrality, renewable energy sources, which can replace fossil energy on a large scale, present new opportunities for development (Liu et al, 2020a;Ben Yosef et al, 2021;Jiang et al, 2021;Liu et al, 2020b;Ma et al, 2021;Nair et al, 2021). The development of renewable energy sources is currently restricted because they are inherently intermittent, being dependent on weather conditions and daily cycles.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Mechanical and Permeability Properties of Lining Concrete Under Different Complex Stress Paths

et al. 2022

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A promising large-scale energy storage is underground compressed air energy storage (CAES) in lined rock caverns. To ensure the safety and stability of storage caverns because of the influence of periodic injection during production, it is crucial to understand the mechanical behavior of lining concrete under different complex stress paths. In this study, three types of uniaxial compressive fatigue test and uniaxial creep test were conducted on concrete. The following conclusions were obtained from the results. 1) The irreversible deformation after the interval was larger than that before the interval in the discontinuous multi-step cyclic loading (DMCL) test. 2) Loading velocity significantly influenced concrete fatigue, and the irreversible deformation in the cycle of low loading velocity was greater than that in the cycle of high loading velocity. 3) The residual strain increased with an increase in stress level. 4) The creep strain increased with an increase in stress level during the multi-step creep loading test; the fractional derivative results were more consistent with the experimental results. 5) The permeability of concrete increased rapidly under the influence of an external force when the stress level exceeded 0.73.

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“…A rockburst is typically influenced by geological conditions and the mining technology used (Jiang et al, 2014;Qi et al, 2020;Qi et al, 2019;Liu et al, 2020b;Zhang et al, 2021a). Many rockburst accidents have occurred as mining depths have increased, resulting in numerous casualties and damage to equipment and infrastructure (Dou et al, 2003;Pan et al, 2003;Pan et al, 2012;Fan et al, 2019;Jiang et al, 2021;. On October 20, 2018, a serious rockburst incident occurred in Shandong Province (Shandong Energy Dragon Mine Group, Longyun Coal Industry Co., Ltd.), resulting in 21 deaths and four injuries.…”

Section: Introductionmentioning

confidence: 99%

An Investigation Into the Mechanism of Rock Bursts in Mines for Tunnel-Cut Isolated Areas with Multiple Stress Fields

Zhang

Ouyang

et al. 2022

Front. Earth Sci.

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Tunnels in several mines in Shaanxi Province, China, which are subject to multiple stress fields, are used as case studies to clarify the structural problems associated with rock bursts that occur in high-stress mines. Field studies featuring field measurements and theoretical analysis are used to investigate the modes and mechanisms of failure. The following are the main findings: (1) a model for distributing the dominant pressure features around the goaf was established by analyzing the stress distribution induced by the goafs on both sides of the excavated zone in a coal seam. The model reveals the pressure distribution in the tunnel-cut area, which is the mechanical factor responsible for rockburst. (2) Because of the goafs acting on both sides of the tunnel, an area of concentrated stress was formed, and stress was transferred to the coal seam. The intense tunnel-cutting action can reduce the stability of the coal. The plastic area caused by tunnel mining and a reduction in the elastic area of the tunnel-cut coal pillars in each segment, increase the possibility for rockburst under the application of dynamic-static stress; this process is known as a stabilizing factor. (3) Due to the combined effect of the tunnel-cut and goafs on both sides, most of the microseismic incidents happened in the core area of coal pillar and in the side of tunnels. When the stress applied on coal pillar is more than critical strength, burst and mine earthquake can be induced. Our study focused mainly on rockburst incidents that occurred in coal mines in Shaanxi Province, which were caused by tunnel-cut coal seams that were subject to multiple stress fields. The study has direct implications for developing new and improved guidelines for preventing rockburst in mines.

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Construction simulating and controlling of the two-well-vertical(TWV) salt caverns with gas blanket

Cited by 28 publications

References 33 publications

Disturbance and Control of National Strategic Gas Storage Induced by Adjacent Tunnel Blasting

Disturbance and Control of National Strategic Gas Storage Induced by Adjacent Tunnel Blasting

Experimental Study on the Mechanical and Permeability Properties of Lining Concrete Under Different Complex Stress Paths

An Investigation Into the Mechanism of Rock Bursts in Mines for Tunnel-Cut Isolated Areas with Multiple Stress Fields

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