Stability analysis of anhydrite mine-out as an underground gas storage based on DEM and similarity theory: a case study

Wang, Hanxun; Zhang, Bin; Xu, Nengxiong; Yu, Xiong

doi:10.1007/s10064-022-02604-3

Cited by 16 publications

(2 citation statements)

References 35 publications

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“…With physical modelling, complex geological formations, rock mass structures and soil slopes are investigated by down-scaling the natural proto-type using similarity theory [20]. The similarity criteria concept is satisfactorily covered in the literature and applied in geotechnical engineering research [21,22]. For example, Wujian et al [23] used the similarity concept and considered geometry, material density and gravitational acceleration as the fundamental variables.…”

Section: Introductionmentioning

confidence: 99%

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

Haundi,

Okonta

2024

Indian Geotech J

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An extensive evaluation of published articles suggests a lack of research on a systematic literature review relating to physical modelling techniques, developments and application in slope stability studies. However, there is growing interest in using physical model tests in slope stability investigations. The present study systematically reviews the methodologies and applications of physical modelling in slope stability research. The Scopus database was used to identify relevant studies which employed physical model tests in slope stability investigations. A combination of fifteen keywords was used to identify relevant articles. A PRISMA-P method for conducting a systematic review was adopted. Articles were screened and analysed, and extracted data were re-organised using an Excel sheet. Data relating to research objectives, physical model test techniques, instrumentation, scaling laws, numerical modelling, results, and findings were extracted and analysed. The systematic review highlights gaps requiring further studies, particularly in slope reinforcements using vegetation and strength deterioration of reinforcements performance under repeated loading exposures. It is found that scholars have not fully addressed the influence of loss of water on pore water regimes and its impact on stability when vegetation is applied as reinforcements. It is also found that the development of slope materials for soil slopes in physical model tests relies on the artificial development of such materials with minimal consideration of their long-term behaviour. Although other options, such as bio-cementation and desiccation techniques, which simulate the natural environment of the slopes, are neglected in slope material development, the present study recommends that future studies consider such techniques.

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Section: Introductionmentioning

confidence: 99%

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

Haundi,

Okonta

2024

Indian Geotech J

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“…Thus, certain scholars have proposed a new idea: using the underground space formed by gypsum mining as a crude oil reserve [10,19]. Wang Hanxun et al describe a comprehensive idea for the stability evaluation of anhydrite mine-out used as an underground gas storage, including the inversion analysis of contact model parameters of anhydrite rock and numerical analysis based on a discrete element method (DEM) [20]. Based on a case study of the Anhui Hengtai anhydrite mine located in East China, Prof. Bin Zhang formulated a comprehensive field test program to investigate its tightness and stability and evaluate its feasibility for reuse as crude oil storage [21].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Mechanical Behavior and Damage Evolution Mechanism of Oil-Impregnated Gypsum Rock

Zhang

Ren

et al. 2022

Sustainability

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In order to realize the comprehensive utilization of the underground space formed by gypsum mining, with the core goal of building an oil storage depot in the gypsum mine goaf, the designed rock infiltration loading device was used to prepare gypsum rock samples immersed in oil for 0, 15, and 30 days for rock mechanics experiments. The influence of oil immersion on the mechanical behavior of the gypsum ore rock mass was studied, and the damage evolution mechanism of gypsum ore rock was explored through statistical fitting and normalized quantitative evaluation. The results show that, with the increase in oil immersion time, the peak stress and elastic modulus of gypsum rock both tend to decrease, and the decrease degree of each parameter is smaller when the confining pressure is higher. The normalized expression of each parameter of gypsum ore and rock with the oil immersion time was established, the deterioration coefficient of each parameter was defined, and the influence law of the oil immersion time on each parameter was analyzed. With the increase in oil immersion time, the internal friction angle of gypsum ore rock exhibited an increasing trend, while the other parameters exhibited a decreasing trend. The oil immersion time had the greatest influence on the cohesion of gypsum ore rock, followed by peak stress, internal friction angle, and elastic modulus. Moreover, it was further demonstrated that high confining pressure conditions weaken the deterioration effect of oil immersion on gypsum rock, i.e., high confining pressure conditions are more conducive to crude oil storage. The research results herein provide theoretical support for the improvement of the theory of “treatment and utilization synergy” in gypsum mine goaf.

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Mechanical properties of gypsum mine rock around a strategic petroleum reserve (SPR) cavern under the crude oil seepage condition

Zhang,

Jia,

Lai

et al. 2024

Energy Science & Engineering

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As China's demand for imported oil continues to grow, large‐scale oil storage facilities have become increasingly important. Currently, China primarily uses underground salt cavern spaces and newly excavated underground water‐sealed caverns for oil storage, which places high demands on the rock formations. China has abundant and widely distributed gypsum mineral resources, and utilizing abandoned gypsum mines for oil storage could not only turn waste into treasure by controlling underground space but also generate significant economic and social value. This article aims to systematically evaluate the mechanical properties of gypsum rock through long‐term immersion tests in crude oil to assess the impact of crude oil immersion on the mechanical performance of gypsum rock and explore the feasibility of using gypsum mines as long‐term stable oil storage caverns. The results show that oil immersion treatment reduces the uniaxial tensile strength of gypsum samples, but has little effect on their compressive strength and long‐term strength. From a mechanical performance perspective, it is feasible to use gypsum mine voids for crude oil storage.

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Stability analysis of anhydrite mine-out as an underground gas storage based on DEM and similarity theory: a case study

Cited by 16 publications

References 35 publications

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

A Systematic Review of Physical Modelling Techniques, Developments and Applications in Slope Stability Analyses

Experimental Investigation of the Mechanical Behavior and Damage Evolution Mechanism of Oil-Impregnated Gypsum Rock

Mechanical properties of gypsum mine rock around a strategic petroleum reserve (SPR) cavern under the crude oil seepage condition

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