Modelling of Longwall Mining-Induced Strata Permeability Change
The field measurement of permeability within the strata affected by mining is a challenging and expensive task, thus such tests may not be carried out in large numbers to cover all the overburden strata and coal seams being affected by mining. However, numerical modelling in conjunction with a limited number of targeted field …
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Numerical simulation study of enhanced geothermal
Model assumptions. Numerical simulations of geothermal mining involve complex physical field interactions. In building a system of partial differential equations, reasonable assumptions can be introduced to simplify numerical calculations. We have analyzed and generalized previous studies and presented the following assumptions: (1)
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Using numerical modelling to represent parameters affecting cave mining
Numerical models have an advantage over empirical methods when it comes to understanding the physics of a rock mechanics problem such as caving geomechanics. In using numerical modelling, various hypotheses can be tested and compared to the actual behaviour of the rock mass response to caving. Predicting rock mass caveability remains …
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An overview of numerical modelling applied to deep …
ABSTRACT. Canadian deep hard-rock mines, which are progressing to depths greater than 2.5 km, provide in situ laboratories for improving understanding of rock mass damage …
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(PDF) Numerical Simulation of Underground Mining
The article presents the results of geodetic measurements and numerical modeling of mining area deformations in the partial exploitation area of the 712/1-2 seam at the Marcel Coal Mine ...
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Numerical Modeling in Civil and Mining …
Numerical modeling is largely used in geotechnical engineering to understand the responses of infrastructures in civil and mining engineering. Many …
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Numerical modelling of rock mass bulking and geometric …
Bonded block modelling approach. 3DEC is a 3-D numerical modelling program based on the distinct-element method for discontinuum analyses. 7 The basis for this program is the extensively tested 2-D version, UDEC. 3DEC simulates the response of discontinuous media, for example a jointed rock mass, subjected to either static or …
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(PDF) Special Issue on Numerical Modeling in Civil and Mining …
Abstract. Numerical modeling is a widely used method in geotechnical engineering to understand the interactive responses of infrastructures with soils or/and rocks in both civil and mining ...
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Theoretical and numerical investigations on mining-induced …
Mining activities carried out above an aquifer, especially in the hanging wall of normal faults, generally involve the risk of water inrush. For a better understanding of the mechanism inducing groundwater outburst through fault floor, the analytical and numerical simulation methods were applied to investigate the process of fault activation driven by …
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An overview of numerical modelling applied to deep mining
Canadian deep hard-rock mines, which are progressing to depths greater than 2.5 km, provide in situ laboratories for improving understanding of rock mass damage and failure processes around underground openings; collecting data to assess in situ and induced stress variability (e.g., core disking, borehole breakouts, stress measurements ...
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numerical modelling theories in mining
Calibration of a numerical model for bore-and-fill mining by D. Roberts Bore-and-fill mining was implemented at a pilot site in Tau Tona mine's shaft pillar on 97 level. Observations, scan data, and measurements from this site were used to calibrate an inelastic numerical model of bore-and-fill mining within the Carbon Leader Reef (CLR). …
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Numerical modeling for rockbursts: A state-of-the …
Abstract. As the depth of excavation increases, rockburst becomes one of the most serious geological hazards damaging equipment and facilities and even causing fatalities in mining and civil engineering. This has forced researchers worldwide to …
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Combining numerical modeling and machine …
Abstract. Predictive modeling of mineral prospectivity, which integrates diverse evidence of ore-forming processes based on an ore deposit genetic model …
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Research on slurry diffusion and seepage law in mining
Tao et al. 13 studied the force and flow characteristics of inorganic solidified slurry in the gas leakage crack, and compared and verified the rationality of the theory and numerical model ...
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Numerical Modelling Application in the …
Numerical modelling is vital in understanding the behaviour of rock masses in mining activities, facilitating extraction planning, and minimising hazards. The models …
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Elastic Versus Inelastic Numerical Modelling of Deep and …
modulus, or. elasticity E. . Inelastic Numerical Modelling of. Contrary to elastic modelling, inelastic m odelling considers the solid material as bein g able to fail under the. load. Hence, it ...
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Applications of Numerical Modelling for Strata Control in …
A proper understanding of complex behaviour of rock mass has always been difficult for reliable design and safe operation of mining structures. Numerical modelling has emerged as a popular tool solving the static as well as the dynamic processes assisting in proper design and operation of the structures. This paper introduces the basics of …
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An Approach for Numerical Modeling of Gob Compaction …
Smart and Haley used the roof strata tilt theory for the estimation of the gob pressure distribution. They suggested a polynomial stress-strain relation using instrumentation data obtained from a stone-built pack. ... Numerical modelling of longwall mining and stability analysis of the gates in a coal mine. Int J Rock Mech Min Sci …
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Numerical modelling of rock fracturing …
Introduction. In this course, we will provide an overview of numerical methods commonly used in rock engineering, including their …
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Numerical Modeling and Simulations | SpringerLink
The modeling of the system or process by a set of equations, which are the governing and closure equations. The set ideally includes all the salient parts and features of the system or process and their interactions. (b) The numerical implementation to obtain the solution of the governing equations.
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Practical Use of Numerical Modelling in Underground Mining
S. Suikki. 2018. Numerical Modelling Study of Low-rise Mining at the Tara Mine. Civil Engineering, master's level in Luleå University of Technology. Request PDF | Practical Use of Numerical ...
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Numerical modelling approach for mine backfill
Abstract. Numerical modelling is broadly used for assessing complex scenarios in underground mines, including mining sequence and blast-induced …
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Numerical simulation of rock cutting in deep mining …
Goktan 8 modified Evan's theory which did not take the effect of friction angle between rock and tool into account. He overcame the deficiency of Evan's theory that the cutting. Numerical modeling of the rock cutting considering with deep mining condition. Deep mining engineering is a current and future problem for most countries in the world.
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Numerical modelling approach for mine backfill | Sādhanā …
Numerical modelling is broadly used for assessing complex scenarios in underground mines, including mining sequence and blast-induced vibrations from production blasting. Sublevel stoping mining methods with delayed backfill are extensively used to exploit steeply dipping ore bodies by Canadian hard-rock metal mines. Mine …
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(PDF) Numerical modeling of Open Pit (OP) to …
TO UNDERGROUND (UG) TRANSITION IN COAL MINING. P HU MINH VUONG NGUYEN, ZBIGNIEW NIEDBALSKI. AGH University of Scie nce and Technology. E-mail: [email protected]. pl; …
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Numerical modelling of rock mass bulking and …
Numerical modelling of rock mass bulking and geometric dilation using a bonded block modelling approach to assist in support design for deep mining pillars. …
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Numerical Modelling of Mechanical Behavior of Coal Mining …
In coal mining hard roofs are one of the main factors causing the occurrence of rock bursts in working panels. To solve this problem, the solid backfill coal mining (SBCM) technique is proposed and used as an effective measure to prevent the rock bursts induced by hard roofs. However, due to the different backfill ratios of working planes, the …
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A Numerical Based Approach to Calculate Ore Dilution …
The chief characteristic of the caving mining method is that caved ores, surrounded by overlying rocks, are drawn from the drawpoint. And the ultimate objective of investigating the draw problems is to forecast the ore loss and dilution. In this paper, the rolling resistance model in the Particle Flow Code was used to simulate the effect of …
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Quantitative and dynamic predictive model for mining
Although the numerical simulation software (FLAC, UDEC, Phase II, etc.) is a powerful tool to get insight into the evolution of overburden stress field and failure field in the mining process, and provides great convenience for qualitative analysis of the subsidence mechanisms of mining overburden, the model established for simulating …
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Numerical modeling of destress blasting for strata separation
A 3D mine-wide model is built and validated with in situ stress measured with hydrofracturing. Mining and destressing in three 5-m thick coal seams are simulated in the region. Numerical modeling of DB is successfully conducted using a rock fragmentation factor α of 0.05 and a stress reduction/dissipation factor β of 0.95. Buffering of ...
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