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This paper presents a case study of damage in the concrete lining of an operational tunnel by field investigation and numerical analysis, in which the field-investigated construction deficiency is ...
The site of the Disturbance and Recolonization Experiment (DISCOL) in the Peru Basin in the southeast Pacific Ocean was chosen as a case study. The model includes the actual bathymetry, as well as the characteristic flow patterns of this region.
Case Studies: Real-World Examples of Numerical Modelling in the Mining Industry. Numerical modelling has been used successfully in numerous mining operations worldwide. One example is the use of …
Physical modelling to provide data-rich case studies for the verification and validation of numerical modelling predictions of cave mechanics problems J Wesseloo Australian Centre for Geomechanics, The University of Western Australia, Australia D Cumming-Potvin Australian Centre for Geomechanics, The University of Western Australia, Australia
Also, the study can provide a back-analysis method to calibrate the material properties of rock mass and fault used in the model. The numerical model assessed the impacts of the major fault on longwall mining, including the changes of peak abutment stress, redistribution of strain energy in coal seam and seismic energy released by fault-slip ...
Two-dimensional numerical model dal case study II Numerical modeling of open pit (OP) to underground (UG) transition in coal mining 43 Fig. 10. Two-dimensional numerical model dal case study III. Note: Speed of exploitation is omitted, only the size of coal extraction has been taken into account.
Numerical modelling has been used to investigate a variety of problems in underground mining and tunnelling: subsidence induced by longwall coal mining; stresses generated when an …
A surrogate-based inverse modeling workflow is then developed by combining the surrogate model with the differential evolutionary algorithm. Numerical studies performed on a synthetic naturally fractured reservoir model with multi-scale fractures illustrate the performance of the proposed methods.
Aiming to increase people's confidence in numerical modeling in civil and mining geotechnical engineering, the author accepted the journal invitation to host this SI. ... Karim, …
Numerical Modelling of Mechanical Behavior of Coal Mining Hard Roofs in Different Backfill Ratios: A Case Study. July 2017; Energies 10(7):1005 ... In coal mining hard roofs are one of the main ...
Geomechanical assessments of lonGwall workinG stability-a case study the stability of longwall mining is one of the most important and the most difficult aspects of underground coal mining. the ...
study is to explore whether rigorous geotechnical modelling provides a sufficiently high-fidelity representation of tailings dam behaviour through comparisons with InSAR and ground-
This article proposes an in-situ steam-assisted thermal decomposition method for oil shale using long-distance horizontal wells.Firstly, this article establishes a coupled thermal–hydraulic hydrothermal mechanical model considering the anisotropy of oil shale to study the in-situ pyrolysis process of oil shale by steam injection in horizontal wells. Then …
The mining distance for each step was 8 m, with a total mining distance of 96 m over 13 mining steps. Numerical simulation analysis without grouting. The first numerical model iteration simulated the mining process without grouting of the floor.
Interests: numerical modeling; mining backfill; backfilling of openings (trenches, silos, mine stopes); stability analysis; soil mechanics; rock mechanics; ... the tail entry of panel 3105 in Mataihao Mine was used as the case study. The methods of underground investigation, theoretical analysis, and FLAC3D numerical simulation were used to ...
duced. Numerical modeling techniques will then be used to back-analyze the case to find the principle for yield pillar design. 3 Case Study 3.1 Geological and Mining Conditions A coal mine in China (Fig. 4a) was selected for the case study. The longwall panels associated with this study were 3100, 3102, and 3104, all of them extracted the No ...
his study is to develop crown pillar design strategies using numerical modelling. Firstly, a mine case study of a shallow deposit with an. overlying TSF is examined for crown pillar stability …
The onsite short-term Seismic Monitoring studies and Numerical Model studies were carried out to identify the vulnerable areas in the closed mine and to study the ground …
Following paper deals with a case study for design of stope dimension of an underground mine based on Mohr coulomb elasto-plastic failure analysis using numerical modeling method. Numerical models ...
Once the fracture status has been monitored, we utilize the developed numerical model to study the impact of irregular fractures on heat energy recovery, as depicted in Fig. 16. The initial temperature of the reservoir is 460K. The injection well continuously supplements fluids into the reservoir.
This paper presents a case study of a mine where adverse seismicity and rockbursting halted production in a critical mining zone in 2023. Numerical modelling and seismic data …
Numerical modeling of pillar recovery In this study, a part of the main panel was modeled in 3DEC with nine chain pillars of 15.5 × 4.5 × 1.8 m and two barrier pillars of 80 × 20 × 1.8 m on both sides of the stope (Fig. 3). Figure 3b shows a cross section of the model in which pil-lars 1–4 are supposed to be recovered.
Abstract The paper presents results of numerical calculations and modeling of mining-induced surface deformation based on Finite Element Method (FEM). Applying the numerical method discussed to calculations allows us to assume a larger number of factors, such as rock mass structure, fracture network, rock properties, etc., which essentially affect the …
In this case study, the proposed mineral prospectivity mapping approach based on numerical modeling has demonstrated significantly better results compared with the spatial …
The model consists of two large orebodies (FW Lens and 1100 orebodies), two faults and a shaft, Fig. 1.The two orebodies are covering more than 2.4 km in length with a maximum horizontal width of 370 m and a maximum vertical thickness of 350 m.Over 200 stopes were introduced in the numerical model to simulate the overall mining sequence covering …
Applying conceptual and numerical models to aquifer management – a Case Study from Northeast Brazil. ... having worked in numerous consulting projects for the mining, beverage and oil& gas industries, as well as water supply assessments for the public sector. ... Besides technical project work he is frequently required to provide training ...
Using numerical models, this paper analyses the specific case of a coal seam mined by the sublevel caving method at a depth of 1000 m which suffers significant increases in stress and major deformations in certain advance headings as a result of variations in the geometry and dimensions of the load itself, in particular, thinning.
Although analytical models and physical models are useful to analyse the fault-slip burst phenomenon, 6, 9 numerical approach is a more proper tool when investigating the coal burst risk caused by fault-slip in a specific mine site, as it can provide more fundamental and rigorous insights into complex mining and geological scenarios. 10, 11 For source …
Numerical modelling has been used to investigate a variety of problems in underground mining and tunnelling: subsidence induced by longwall coal mining; stresses generated when an open stope is filled cemented backfill and the stability of exposures created during subsequent mining of adjacent stopes; the interaction of two tunnels; and the effects of under-mining a pre …
Deep Coal Mining by Numerical Modeling and a Case Study Shankar Vikram, Dheeraj Kumar and Duvvuri Satya Subrahmanyam Abstract Importance of numerical modeling in mine design gained pace after modern way of approach took birth through many variants. Methods such as Continuum and Discontinuum emerge as most effective in resolving certain issues.