numerical modelling theories in mining oct
Measurement and modelling of deep sea sediment plumes and ... - Nature
Measurement and modelling of deep sea sediment plumes and implications for deep sea mining | Scientific Reports Article Open Access Published: 19 March 2020 Measurement and modelling of...
Numerical Modelling – Mining Geomechanics
Numerical Modelling – Mining Geomechanics Numerical Modelling Numerical Modelling Various numerical codes have been developed to study challenging scenarios experienced during longwall extraction. COSFLOW, MOOSE and FRACOD are developed in our team in collaboration with researchers from various research laboratories.
Numerical simulation of the land subsidence induced by groundwater mining
Combined with the engineering geological and hydrogeological conditions of Jining City, a three-dimensional fluid–solid coupling model of land subsidence was established by using COMSOL software....
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 ...
Field Measurement and Numerical Modelling Study on Mining ... - Hindawi
Field Measurement and Numerical Modelling Study on Mining-Induced Subsidence in a Typical Underground Mining Area of Northwestern China Kai Zhang, 1Lu Bai, 1Pengfei Wang, 2,3 and Zhuang Zhu 2 Show more Academic Editor: Castorina S. Vieira Received 03 Feb 2021 Revised 01 Apr 2021 Accepted 07 Apr 2021 Published 26 Apr 2021 Abstract
Numerical Modelling Study of Low-rise Mining at the Tara Mine - DiVA portal
numerical modelling. Most of the study was performed using the two-dimensional numerical modelling software FLAC, but a smaller part was also conducted with the three-dimensional software FLAC3D. The expected results from the numerical modelling study were: • Appropriate room- and pillar dimensions when using drift-and-slash mining
Numerical modelling for ground support design - mining applications
PDF | On Jan 1, 2020, G Sweby and others published Numerical modelling for ground support design - mining applications | Find, read and cite all the research you need on ResearchGate
Applications of numerical modelling in underground mining and ...
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 effe...
Numerical modelling of longwall mining and stability analysis of the ...
DOI: 10.1016/J.IJRMMS.2012.02.002 Corpus ID: 140567421; Numerical modelling of longwall mining and stability analysis of the gates in a coal mine @article{Shabanimashcool2012NumericalMO, title={Numerical modelling of longwall mining and stability analysis of the gates in a coal mine}, author={Mahdi Shabanimashcool and Charlie Chunlin Li}, journal={International Journal of Rock Mechanics and ...
Numerical modelling of mining subsidence, upsidence and valley closure ...
Analysis of Mining-induced Valley Closure Movements Chengguo Zhang, R. Mitra, J. Oh, B. Hebblewhite Geology Rock Mechanics and Rock Engineering 2015 Valley closure movements have been observed for decades in Australia and overseas when underground mining occurred beneath or in close proximity to valleys and other forms of irregular topographies.…
Three-Dimensional Physical and Numerical Modelling of Fracturing and ...
Three-Dimensional Physical and Numerical Modelling of Fracturing and Deformation Behaviour of Mining-Induced Rock Slopes by Guoxiang Yang 1, Anthony K. Leung 2, Nengxiong Xu 1,*, Kunxiang Zhang 1 and Kunpeng Gao 1 1 School of Engineering and Technology, China University of Geosciences, Beijing 100083, China 2
Numerical modelling of longwall mining and stability analysis of the ...
The mining causes the immediate roof to cave-in, separation and shearing of bedding planes in the stratum above the cave-in zone, and fracturing and deformation in the far-locating host rocks [14]. Numerical modelling was conducted to simulate these events to assess the stability of the gates and the chain pillar. Discussion
Numerical simulation of the land subsidence induced by groundwater mining
A numerical simulation is an effective tool for studying the land subsidence changes caused by groundwater over-extraction. Land subsidence has become a common engineering geological problem, which can easily induce many secondary disasters. Jining is facing severe land subsidence, which has seriously affected the city's development.
Numerical Model Calibration for Simulating Coal Pillars, Gob and ...
have been made in full extraction mining. Well-calibrated numerical models can assist in providing a better understanding of the load and failure processes, provided the coal, the overburden, and the gob are all modeled with suffcient realism. A program of numerical model calibration and validation was carried out using FLAC3D. 1
Combined Finite-Discrete Element Modelling of Dynamic Rock ... - Hindawi
A combined finite-discrete element method (FDEM) is proposed to model the dynamic fracture, fragmentation, and resultant muck-piling process during mining production by blast in underground mine. The key component of the proposed method, that is, transition from continuum to discontinuum through fracture and fragmentation, is introduced in detail, which makes the proposed method superior to ...
Numerical Modelling of Transportation Cost Minimization in Surface Mining
Brazil et al. [13] suggested a model to optimize the transportation costs of underground mining roads. This model focused on the underground mine networks. Two models were investigated by Dharma and Ahmad [14]. These models presented for application in two iron ore mines. These models were applied to optimize transportation cost.
Numerical modelling of out-of-seam dilution in longwall retreat mining ...
Furthermore, a geo-mechanical model test system for the new mining method is independently developed. In order to clarify the control mechanism of the AFR surrounding rock, the model test is performed. Corresponding engineering suggestions are then proposed according to the results of the numerical simulations and geo-mechanics model test.
Experimental and Numerical Modelling of Deep-Sea-Mining-Generated ...
Polymetallic nodule mining generates turbidity currents, which could negatively impact the deep-sea environment. For that reason, we investigate this type of current experimentally and numerically ...
CivilEng | Free Full-Text | Towards a Better Understanding of Concrete ...
During the first filling, the reservoir is gradually raised in multiple stages. At each stage, the filling is paused to allow adequate time for monitoring and evaluating the performance of the dam and its foundation. The analysis of the monitored behavior and assessment of security conditions is performed by comparing the values measured by the monitoring system installed in the dam with the ...
Direct Numerical Simulation, Theories and Modelling of ... - SpringerLink
A Direct Numerical Simulation (DNS) of Couette-Poiseuille flow is presented and analyzed in two ways. First, we test four semi-theoretical proposals for universal behaviour of respectively the velocity, the mixing length, the eddy viscosity, and the turbulence-kinetic-energy production rate. The question is which one may carry over from zero pressure gradient, for which they all agree, to ...
Combined Finite-Discrete Element Modelling of Dynamic Rock ... - Hindawi
A combined finite-discrete element method (FDEM) is proposed to model the dynamic fracture, fragmentation, and resultant muck-piling process during mining production by blast in underground mine.
Numerical Modelling of Mine Workings
This report covers the production of a general reference handbook of numerical modelling for the South African mining industry, with particular reference to the gold and platinum industries. It also covers a research sub-project investigating the use of expert systems and intelligent user interfaces to aid in the process of numerical modelling.
Numerical modelling approach for mine backfill | SpringerLink
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.
Elastic Versus Inelastic Numerical Modelling of Deep and Highly ...
With the current trend of exploiting mines at increasing depths comes the challenge of managing increasingly high stress conditions. One tool at the disposal of mine engineers and designers is the numerical simulation of the stresses and deformations likely to be encountered ahead of the mining fronts for various mining scenarios.
Numerical Modelling - Department of Civil & Mineral Engineering
Mining + Geomechanics Numerical Modelling The numerical modelling research undertaken here focuses on interdisciplinary and multiscale study of fractured rock mass. An understanding of rock mass is needed in every applied rock engineering project. Rock masses are discontinuous, and therefore they cannot be modelled as continuum media.
Practical Use of Numerical Modelling in Underground Mining
Numerical Modelling Study of Low-rise Mining at the Tara Mine. Civil Engineering, master's level in Luleå University of Technology. June 1988 · In deep coal mines, many microseismic events...
Elastic Versus Inelastic Numerical Modelling of Deep and Highly ...
Abstract: With the current trend of exploiting mines at increasing depths comes the challenge of managing increasingly high stress conditions. One tool at the disposal of mine engineers and designers is the numerical simulation of the stresses and deformations likely to be encountered ahead of the mining fronts for various mining scenarios.
Numerical Modelling – Mining Geomechanics
Prediction of the explicit fracturing process is necessary for many industries such as mining, geothermal energy, nuclear waste disposal and CO2 geosequestration. Since 2007, CSIRO has been leading an international collaboration to develop FRACOD, a unique numerical code for modelling coupled rock fracturing processes. COSFLOW.
Numerical Modelling - Department of Civil & Mineral Engineering
Mining + Geomechanics Numerical Modelling. The numerical modelling research undertaken here focuses on interdisciplinary and multiscale study of fractured rock mass. An understanding of rock mass is needed in every applied rock engineering project. Rock masses are discontinuous, and therefore they cannot be modelled as continuum media.
A physical and numerical model-based research on the subsidence ...
A numerical model example has been used to demonstrate and simulate the result of the physical experiment and the deformation feature of the subsidence caused by mining out. According to this case, the subsidence induced by mining with the feature of overlying strata to deflect toward the worked-out section has been simulated by the numerical ...
Numerical modeling of rock deformation - ETH Z
Thermo-mechanical model with viscoelastoplastic rheology including viscous shear heating, gravity and erosion. Numerical modeling of rock deformation: Introduction. Stefan Schmalholz, ETH Zurich Reconstructing sedimentary basins Numerical model of the evolution of sedimentary basins.
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 ...
Applications of numerical modelling in underground mining and ...
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-existing tunnel and ...
Field Measurement and Numerical Modelling Study on Mining ... - Hindawi
Field Measurement and Numerical Modelling Study on Mining-Induced Subsidence in a Typical Underground Mining Area of Northwestern China. ... 2017, to Oct 24, 2018. Line A is in the middle of 31103 panel. 62 monitoring points are numbered AK1–AK3 and A1–A61; the data were collected from July 27, 2019, to July 5, 2020, with 22 groups of data ...