Yiming ZHANG | Professor (Full) | PhD
Numerical simulations, Crack propagation, Cracking Elements Method, Multifield analysis, Thermal spalling, Discontinuity Layout Optimization, Slope stability
(PDF) Mining Surveys: A Contemporary Introduction for …
Understanding the fundamentals of mining surveys is, consequently, a key prerequisite for active engagement in transforming the mining sector outcomes. 1.2 The Context Mining surveys deal with the accurate geospatial measurements needed to plan, design, implement, assess, and monitor mining activities including their environmental impacts while ...
Process Layout Design with Association Rule Mining: A …
The current layout, block-diagramming layout and association-rules layout were compared based on load distance, which is the summation of product between unit load and distance travelled. The best layout with minimum load distance was selected. IV. RESULTS AND DISCUSSI ON Activities and their space requirement
Mining Methods: Block Caving | Geology for Investors
SME Mining Engineering Handbook (2011) Edited by Peter Darling Society for Mining, Metallurgy & Exploration Book; Block-caving copper mining methods and costs at the Miami mine, Miami Copper Company, Gila County, Arizona (1965) Hardwick, W. R. U.S. Dept. of the Interior, Bureau of Mines PDF
Don't Cut Corners, Cut Cross-Sections Instead
I will describe the three types of geological sections that one can cut and what each may be describing. The three types are: (1) longitudinal (long) sections; (2) cross-sections; (3) …
9.4.2a Block Caving | MNG 230: Introduction to Mining …
Block caving is an underground mining technique used to mine large, massive, low-grade ore bodies such as the deposits at North parks. The ore to be extracted is in the shape of a large …
Review of Mathematical Models Applied in Open-Pit Mining
These include (i) cut-off grade optimisation, (ii) block economic evaluation, (iii) slope design and requirements, (iv) pit design and optimisation and (v) pushback design. An ideal mining system constitutes of a mine, ore processing stream and metal refinery, which are optimally planned to avoid losses (Githiria et al. 2016). Modelling of ...
Integrated optimization of underground mine design …
Optimization techniques for stope layouts and production scheduling are reviewed. An integer programming model is proposed that allows for either integrated or isolated optimization. Both …
Determination of Optimal Underground Stope Layout
Mining Optimization Laboratory (MOL) University of Alberta, Edmonton, Canada ABSTRACT Stope layout optimization means determining the b est dimension and the locations of the stopes and number of stopes. Stope layout in underground mining directly affects other significant aspects of mining such as economic value and mining recovery.
Optimisation of Mining Block Size for Narrow Tabular Gold Deposits
The layout of the blocks can be 2D or 3D depending on the nature of the deposit . With the advent of computer technology, the model of the ore body usually consists of numerous small blocks to which the grades are assigned. ... (where the average ore body is above the cut-off grade), the larger mining blocks and the mining efficiencies ...
Designing an optimal stope layout for underground mining …
As shown in Fig. 1a, the stope size is defined as 3 × 3 = 9 mining blocks, i.e. the number of mining blocks along x and y-axis is equal to 3, respectively.Given the defined stope size, a candidate mining block b may become part of 1 out of 9 possible stope combinations (for example, stopes 1 and 2). This reflects that there are numerous possible combinations for all …
Mining by rock cutting in narrow reefs
the current proposed mining layout for implementation of the ARM 1100 as a mining production tool. Background ... that the most appropriate start was to carry out pick cutting tests, in Austria, on a sample block of UG2 reef. The reef was sourced from the Anglo Platinum Mine, Union Section, it had a low uniaxial compressive strength
A comprehensive underground excavation design (CUED) methodology …
A guideline for the geomechanical design of underground construction in the Austrian Society for Geomechanics (OGG) published for excavation and support design. 5 Stille and Palmstrom 6 presented an approach for underground constructions based on field observations and measurements, rock mass characterisation, application of information by …
Design & Operating Principles in Caving Methods
Mining is conducted on sublevels from development drifts and crosscuts, connected to the main haulage level below by ramps, orepasses, and raises. Every tonne of ore is drilled and blasted …
Fundamentals of 3D modelling and resource estimation in coal mining
The prerequisite of maintaining an efficient and safe mining operation is the proper design of a mine by considering all aspects. The first step in a coal mine design is a realistic geometrical ...
Review and application of stope support design criteria
Review and application of stope support design criteria rock engineer to estimate support spacing based predomi-nantly upon past experience. In order to improve safety and continue mining at increasing depth, an improved engineering approach is required to design effective support systems with optimum spacing of support units. To this end,
Stope Structural Parameters Design towards Green and Deep …
By leveraging the advantages of each design method and categorizing the applicable scenarios of each method, this design process aims at providing optimal design …
Block Caving Mining Method, Application Of
1School of Resources and Civil Engineering, Northeastern University, Shenyang, China 2Chinese Academy of Engineering, Beijing, China Block caving is a mining ore mining method in which deep hole or medium-deep hole drilling blasting technology is applied for caving at one time in a stage. The layout of ore blocks and
Block size selection and its impact on open-pit design
Each block contains relevant information such as grade, density, and geology, combined with other data such as commodity prices, mining and processing costs, and technical parameters related to ...
(PDF) Rock mechanics related to mining engineering
There are two missions for rock mechanics to accomplish in mining engineering: (1) to destroy rock efficiently; (2) to make rock structures safe.
Selection of practical bench height in open pit mining …
Department of Mining Engineering, Am irkabir University of Technology, Hafez St., Enqelab Ave., Tehran, Iran. Accepted 11 May, 2010 Determination of p ractical bench h eight is an important ...
Longwall Mining 9
satisfying these engineering requirements, making extensive use of figures and photographs to illustrate important concepts. It considers panel layout options and associated chain pillar design; traces the history of powered support design to draw learnings about their static and kinematic
BLOCK MODEL KNOWLEDGE FOR MINING ENGINEERS-AN INTRODUCTION …
This document has been written to introduce new mining engineers (and experienced mining engineers new to planning or particular types of block models) to mineral resource block models: their ...
Block size selection and its impact on open-pit design …
Block size selection and its impact on open-pit design and mine planning grade values of the elements of interest, not on the real (unknown) block grades. This inevitably implies that some high-graded blocks are underestimated and sent to dump, while other low-graded blocks are overes-timated and sent to the processing plant. This
(PDF) Long hole drilling for the platinum …
Grade variability The average grade within a large block of ground demarcated for long hole drilling may be above the required pay limit. However, individual grid blocks within the large block could fall below this cut-off. Selective mining of …
The CCUT block cave design for Cullinan Diamond Mine
The CCUT project entailed establishing new surface and underground infrastructure to extract the next mining block below the depleted BA5 mining block using block caving with an advance …
Underground Mining Methods and Equipment
ventilation, mining machinery, excavation, cutting, drilling, loading, hauling Contents 1. Underground Mining Methods 1.1. Classification of Underground Mining Methods 1.2. Underground Operations in General 1.3. Room-and-pillar Mining 1.4. Sublevel Stoping 1.5. Cut-and-fill Stoping 1.6. Longwall Mining 1.7. Sublevel Caving 1.8. Block Caving 2.
What every mining professional needs to know about block …
Lowest mining cost per ton: Block cave mining operating costs are a fraction in comparison with any other underground mining method. Flexible production rate from cave mining methods : Block cave mining is driven by economies of scale, where production rates can reach up to 100 kilotonnes per day; however, there are smaller mines working ...
An overview of block caving operation and available …
Block caving technique is a mass mining method in which gravity is used in combination with internal rock stresses to fracture and break the rock mass into pieces that can be handled by …
308 Underground Mining Stope Layout Optimization …
To maximize the profitability of these operations, an integrated optimized stope layout and production schedule is required to coordinate underground mining activities such as …