Mine slope stability analysis by coupled finite element modelling

Pariseau, William G.; Schmelter, S.C.; Sheik, A.K.

doi:10.1016/s1365-1609(97)00260-8

Cited by 9 publications

(5 citation statements)

References 9 publications

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“…Understanding the flow and transport properties of rock fractures is critical for many underground projects, such as mining engineering, geothermal energy development, shale gas exploitation, and carbon dioxide geological storage. In the case of underground mine engineering, fluids inside the fracture are closely related to ore mining efficiency, rock stability assessment, and groundwater disaster control [1][2][3]. In addition, for low permeable rock reservoirs, fractures, as the main flow channels for subsurface fluids, determine the efficiency of resource and energy development, as well as the effectiveness of long-term sequestration of hydrocarbons, carbon dioxide, hydrogen energy, etc.…”

Section: Introductionmentioning

confidence: 99%

A Connectivity Metrics-Based Approach for the Prediction of Stress-Dependent Fracture Permeability

Deng,

Shang,

2024

Water

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Rapid and accurate assessment of fracture permeability is critical for subsurface resource and energy development as well as rock engineering stability. Fracture permeability deviates from the classical cubic law under the effect of roughness, geological stress, as well as mining-induced stress. Conventional laboratory tests and numerical simulations are commonly costly and time-consuming, whereas the use of a connectivity metric based on percolation theory can quickly predict fracture permeability, but with relatively low accuracy. For this reason, we selected two static connectivity metrics with the highest and lowest prediction accuracy in previous studies, respectively, and proposed to revise and use them for fracture permeability estimation, considering the effect of isolated large-aperture regions within the fractures under increasing normal stress. Several hundred fractures with different fractal dimensions and mismatch lengths were numerically generated and deformed, and their permeability was calculated by the local cubic law (LCL). Based on the dataset, the connectivity metrics were counted using the revised approach, and the results show that, regardless of the connectivity metrics, the new model greatly improves the accuracy of permeability prediction compared to the pre-improved model, by at least 8% for different cutoff aperture thresholds.

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Section: Introductionmentioning

confidence: 99%

A Connectivity Metrics-Based Approach for the Prediction of Stress-Dependent Fracture Permeability

Deng,

Shang,

2024

Water

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“…Such as in the construction engineering field, including ground settlement caused by groundwater extraction, seepage of foundation pit and wall seepage prevention [21], seepage and stability of the dam foundation [22,23], tunnel construction [24][25][26], and so on. In the mining field, it involves hydromechanical coupling seepage [27], rock mass deformation and water inrush [28][29][30][31][32], working face grouting [33] and gas extraction [34][35][36][37][38][39][40][41], stability of slope in an open pit [42][43][44], protection of water resources in mining area [45][46][47][48][49][50]. The field of environmental engineering covers underground nuclear waste storage, municipal garbage disposal and environmental water pollution transmission [51][52][53][54][55][56][57], pollutant control systems [58] and biomedical engineering [59][60][61].…”

Section: Introductionmentioning

confidence: 99%

A Review of Hydromechanical Coupling Tests, Theoretical and Numerical Analyses in Rock Materials

Zhao

Liu

Lin

et al. 2023

Water

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The hydromechanical coupling behavior of rocks is widely present in the fields of rock mechanics and engineering studies. Analyzing and summarizing the relevant literature, the current status of experimental and coupling theory research on hydromechanical coupling is systematically described, the commonly used numerical simulation methods and their applications are briefly introduced, and the hydromechanical coupling problems in mining engineering, water conservancy, and hydropower engineering, slope engineering, tunneling engineering, and other fields are analyzed. Regarding the current status of studies on the hydromechanical coupling behavior of rocks, the test research aspect needs to further enhance the test studies on the triaxial shear permeability of rock material, and adopt a combination of macroscopic, fine, and microscopic methods to study the hydraulic coupling problems of rock materials from different scales. To couple theory, the traditional concepts are broken through, and new coupling theories and mathematical models are used to explain and solve the relevant practical problems. Meanwhile, the application of interdisciplinary approaches to solving coupling problems in the future is emphasized. In terms of numerical simulation and engineering applications, new large data algorithms are developed to improve the efficiency of simulation calculations. In addition, consideration should be given to the numerical simulation of coupling effects, the coupled rheological effects, and the coupled dynamic properties of rock masses under high-ground stress and high water pressure.

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“…Continuous monitoring and analysis of the distribution of support pressure is of great significance to predict and prevent the potential failure or collapse of the working face [19,20]. Advanced numerical simulation technology, such as finite element analysis, can be used to simulate and understand the distribution of support pressure and its evolution with time, as well as to establish effective models of fractured rock masses to improve execution speed [21][22][23][24]. Ansys software (https://www.ansys.com/ Last accessed date: 8 May 2023) can also be utilized to simulate the stress environment of the surrounding rock in a roadway under different filling wall conditions, and subsequently choose the appropriate type of filling wall [25].…”

Section: Introductionmentioning

confidence: 99%

Mechanism and Empirical Study of Rockburst in the Adjacent Area of a Fully Mechanized Top-Coal Caving Face Based on Microseismic Technology

et al. 2023

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Monitoring and providing warnings for coal mine rockburst disasters is a worldwide problem. Several rockburst accidents have occurred in a 1301 belt transport chute near a 1300 fully mechanized caving mine face. To address this issue, an empirical study of the occurrence mechanism of rockbursts in the adjacent area of the fully mechanized top-coal caving face was carried out. This paper mainly addresses the following issues: (1) based on microseismic monitoring technology, the distribution characteristics of the host-rock-supported pressure of the 1300 working face were measured, and the evolution and distribution of the deep-well caving working face host-rock-supported pressure were analyzed. It is revealed that the occurrence mechanism of rockburst in the adjacent area is actually caused by the evolution and superposition of the lateral abutment pressure of the 1300 stope, and the stress of the original rock along the 1301 belt transport down chute; (2) a theoretical calculation model of dynamic and static abutment pressure in longwall stope is built, and an example is tested. The results show that the peak position of lateral abutment pressure of the coal body outside the 1300 goaf is around 63 m, and the peak value of abutment pressure is around 47 MPa; (3) coal body stress monitoring, bolt dynamometer detection, and other means are compared and analyzed. At the same time, with the help of CT geophysical prospecting and drilling cutting measurements, it is concluded that the 1301 belt transport down chute is in the bearing pressure influence zone (superimposed zone), which further verifies the validity of microseismic analysis results and the accuracy of the above theoretical model. Based on this, the early warning system and prevention measures for rockburst based on microseismic monitoring are proposed. The engineering practice shows that the dynamic and static bearing pressure distribution and evolution law of the working face can be dynamically obtained by using microseismic technology, which provides a basis for the accurate prediction and treatment of rockbursts.

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Mine slope stability analysis by coupled finite element modelling

Cited by 9 publications

References 9 publications

A Connectivity Metrics-Based Approach for the Prediction of Stress-Dependent Fracture Permeability

A Connectivity Metrics-Based Approach for the Prediction of Stress-Dependent Fracture Permeability

A Review of Hydromechanical Coupling Tests, Theoretical and Numerical Analyses in Rock Materials

Mechanism and Empirical Study of Rockburst in the Adjacent Area of a Fully Mechanized Top-Coal Caving Face Based on Microseismic Technology

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