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.

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 ...

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)

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 …

During metal mining, the deformation and failure of rock mass are very important factors that dominate rock movement and zoning. Numerical modelling provides a feasible way to study the deformation and failure of rock mass. In this study, a numerical method of UDEC was adopted to study strata movement mechanism influenced by NWW …

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 ...

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 …

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 …

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 …

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 ...

The stability of the filling roof—as an important bearing unit in the stope of the access stope in the filling mining method—is of great significance to guarantee the safe and efficient production of the mine. Arrangement of the mining approach in downward cemented filling stope is the key factor affecting the stability of the filling body roof. Based …

Numerical modeling is largely used in geotechnical engineering to understand the responses of infrastructures in civil and mining engineering. Many …

Using numerical modelling to represent parameters affecting cave mining. Underground Mining Technology 2017 – M Hudyma & Y Potvin (eds) 2017 Australian Centre for Geomechanics, Perth, ISBN 978-0 ...

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 ...

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 ...

Numerical modelling can be used to investigate the stability of gates. However, the constitutive models and parameters used to simulate the behaviour of rock masses need to be carefully considered [6]. In addition, it requires an appropriate algorithm to simulate longwall mining. Many attempted to numerically model longwall mining in …

The model geometry is chosen so that it is closest to the actual geometry mine. A rectangular panel of area 600 × 300 m is considered for subsidence prediction. The linear elastic material model is selected for the overburden layers. Strength parameters of the soil layers used in the numerical modelling are given in Table 15.1.

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 …

Through the use of an integrated FEM/DEM-DFN modelling technique this thesis presents a new approach to simulation of block caving induced surface subsidence allowing physically realistic simulation of …

However, due to the low data utilisation, visualisation-oriented mining education and training applications are still designed with simple interaction and are limited to solid 3D models [17], [22 ...

Several theories and models have been proposed to describe the gravity flow behavior in SLC. The ellipsoid theory of ore motion in SLC was one of the first attempts to quantitatively describe the flow behavior of broken ore, which provided a theoretical basis for the sublevel caving design [].Additionally, many small-scale …

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 …

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 …

A numerical model was developed in order to estimate the residence time of a sediment plume generated by potential deep-sea mining activities, with special attention to discharges in the bottom boundary layer. The site of the Disturbance and Recolonization Experiment (DISCOL) in the Peru Basin in the southeast Pacific Ocean …

CFD modeling is based on the principles of fluid mechanics, utilizing numerical methods and algorithms to solve problems that involve fluid flows. Models attempt to simulate the interaction of liquids and gases where the surfaces are defined by boundary conditions. CFD models are based on the principles of the Navier–Stokes equations.

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.

Numerical model of DSCD cut blasting and distribution of cut hole. The parameters of each blasthole in the model are designed on the basis of the field project cases undertaken by the author's research group 17, 34 and on the basis of the original plan of the rock roadway excavation project in the third central depot of Gubei Coal Mine …

The strain-hardening behavior of soils and rocks under compression is critical for evaluating the construction stability in geological and mining engineering. Numerical simulation is an effective approach and widely used in the stability analysis of constructions. To ensure the accuracy of the simulation results, it is necessary to select …

The suggested models from this group are random field theory based models [15,16], elastic or visco-elastic theory based models [17][18][19], continuum numerical models [12,[20][21][22] and ...

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 …

Abstract. Predictive modeling of mineral prospectivity, which integrates diverse evidence of ore-forming processes based on an ore deposit genetic model …

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). …

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 ...

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 …

Abstract. Numerical modelling is broadly used for assessing complex scenarios in underground mines, including mining sequence and blast-induced …

We present a critical review of numerical methods centered around the hypothesis that a model is not, and cannot be, a perfect imitation of reality; therefore, …

Discrete element method (DEM) has been widely used in studying fracture development of rock due to its ability to accurately depict particle interactions. In order to more intuitively describe the fracture characteristics of the main roof during coal seam mining using DEM, a novel numerical model for generating irregular particles roof …

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.

In this study, the coupling mechanism of the THM in a fractured rock during the operation of an EGS was first determined and explained. Based on the local thermal nonequilibrium theory, a fully coupled THM mathematical model of a dual media was established, considering the dynamic changes in the properties of the rock matrix, …