Methodological approach to creation of the 3D model of an oval-shaped open pit mine

A 3D model of optimal contours phased development of oval-shaped open pit mines is proposed in the article. It is assumed that with enough accuracy the volumetric contour of the open pit mine is interpolated by an elongated elliptic hyperboloid. The calculation formulas for mineral resources are derived and optimal volumes of overburden are determined depending on the mining phase. In this case, the total number of mining phases is set in advance. The stripping ratio is used as a quality criterion of the optimization task. The problem of optimal control is solved using the Bellman function in dynamic programming. All the necessary calculation formulas are obtained in the final form by solving the optimization problem. Their simplicity and substantiation of each conclusion ensure that the results of this study can be successfully applied in practical calculations of the design and planning of mining operations in open pit mining.

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On the Measures to Solve Environmental Problems of the Territory with Intensive Open Pit Coal Mining

E3S Web of Conferences ◽

10.1051/e3sconf/201910502006 ◽

2019 ◽

Vol 105 ◽

pp. 02006

Author(s):

Tatiana Gvozdkova ◽

Pawel Stefanek ◽

Michaela Koščová

Keyword(s):

Soil Cover ◽

Mineral Resources ◽

Radioactive Isotopes ◽

Open Pit ◽

Open Pit Mining ◽

Mining Operations ◽

Coal Deposits ◽

Disturbed Land ◽

Ecological Problems ◽

Suitable Form

Ecological problems in the open pit mining of coal deposits are extremely hard, since mining operations are accompanied by disturbed land to a large depth with significant changes in the landscape, hydrometeorological conditions, mixing of rocks and removal of infertile or even harmful rocks with radioactive isotopes to the surface. Disturbed lands are unusable if they are not repaired. All man-made disturbances of the environment caused by open pit mining are divided into landscape (changes in terrain, vegetation and soil cover) and environmental (violation of living conditions within the allotment and adjacent lands: changes in water regime, pollution of the soil, air and water basins) onesOne of the most important areas in the field of environmental protection is the reclamation (restoration) of the earth’s surface. In accordance with the requirements of the protection of the subsoil, enterprises engaged in the development of mineral deposits are obliged at their own expense to bring disturbed lands into a state suitable form for their further use. Reclamation of ought to be carried out during open pit mining operations and must be completed after mining of mineral resources in the terms established by the authorities that provide land for use.

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Combined Method of Coal Mining in the Opening of Shallow Layers as a Direction of Innovative Development of Geotechnology

E3S Web of Conferences ◽

10.1051/e3sconf/202131501006 ◽

2021 ◽

Vol 315 ◽

pp. 01006

Author(s):

Tatiana Tyuleneva ◽

Roman Shishkov ◽

Elena Kucherova ◽

Marat Moldazhanov

Keyword(s):

Coal Mining ◽

Underground Mining ◽

Methodological Approach ◽

Production Capacity ◽

Open Pit ◽

Open Pit Mining ◽

Mining Operations ◽

Balanced Development ◽

Coal Reserves ◽

The Cost

In recent years, there has been a decline in the efficiency of coal mining by traditional methods. On the one hand, the volume of coal outside the contour of the cut, which is economically impractical for open-pit mining, is increasing. On the other hand, when using underground geotechnology, the cost of production exceeds the cost of performing mining operations using open geotechnology, this is due to differences in the factors of operation of the open pit and the mine. This circumstance determines the use of open-underground technology for mining coal reserves outside the contour of the open pit as an actual and promising direction. This article describes a methodological approach based on the use of technological schemes for the preparation and treatment of reserves of powerful shallow coal seams, the justification of the parameters of combined geotechnology with a coordinated and balanced development of open and open-underground mining operations with the distribution of reserves for open and open-underground mining of coal reserves beyond the limit contour of the open pit, the preparation of excavation sites directly from its workings and the coordination of production capacity and the speed of their development. Its application will increase the production capacity of the coal mining complex without additional environmental burden and will provide an increased return on investment.

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Operation Quality Indicators for Shovel-Truck Systems at Open-Pit Coal Mines

E3S Web of Conferences ◽

10.1051/e3sconf/201910501058 ◽

2019 ◽

Vol 105 ◽

pp. 01058 ◽

Cited By ~ 1

Author(s):

Anton Voronov ◽

Yuri Voronov ◽

Artyom Voronov ◽

Nuray Demirel

Keyword(s):

Quality Indicators ◽

Performance Indicators ◽

Objective Assessment ◽

Coal Mines ◽

Quality Criterion ◽

Operational Performance ◽

Open Pit ◽

Open Pit Mining ◽

Mining Operations ◽

Analysis And Synthesis

Stripping and mining operations at open-pit coal mines are performed mainly by heavy shovel-truck systems (STS). One of the main problems of the STS is a rather low level of its operation quality, an objective assessment of which is an important step in identifying the causes of low quality and effective ways to improve it. The purpose of assessing the STS operation quality is defined as a functional criterion. The next important step of the assessment is to choose the set of indicators that most characterize the STS operation quality. In this article we present the rationale, the general principles for the formation of quality indicators set, the sources and the main dependencies for its determination. For this purpose, modern methods of data collection and processing, analysis and synthesis are used. The ability to assess the STS operation quality is very important for identifying the main directions of improving its operational performance, reaching the optimization of the key performance indicators by the quality criterion, and, as a result, for the possible saving of material and technical resources in the open-pit mining of minerals.

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Landslide stabilization experience in Urtui open pit mine

Gornyi Zhurnal ◽

10.17580/gzh.2021.01.17 ◽

2021 ◽

pp. 102-106

Author(s):

O. A. Isyanov ◽

◽

D. I. Ilderov ◽

V. I. Suprun ◽

S. A. Radchenko ◽

...

Keyword(s):

Rock Mass ◽

Large Scale ◽

Geological Structure ◽

Stability Control ◽

Open Pit Mine ◽

Open Pit ◽

Open Pit Mining ◽

Coal Seams ◽

Mining Operations ◽

Early Access

Instability of pit wall slopes is the most critical accident in open pit mining. The risk of damages to pit walls is proportional to the height of exposed surfaces and to the time of exposure. Among many factors governing pit wall stability, the major factor is geological structure and weakening zones in rock mass. Deformation processes are initiated in host rock mass of coal seams mostly because of undercutting of weak interlayers. Alongside with local undercutting, another cause of landslides is transition of coal mining from down-dip extraction to up-dip extraction. The sequence of mining and morphology of weak interlayers also have influence on initiation and evolution of deformations. The basic component of engineering solutions on pit wall stability control is optimization of mining sequence and methods of accessing working horizons in open pit mines. Large-scale deformation of Western and Southeastern pit walls in Urtui mine could be avoided using the optimized sequence of mining operations. For example, mining advance mostly along the curve of the Urtui centroclinal fold, with early access and destress of the eastern and, first of all, western wings of the fold could make it possible to evade from up-dip mining of coal seams and, as a consequence, to solve the major geomechanical problems in the open pit mine.

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Development of Muruntau–Myutenbai joint open pit mine

Gornyi Zhurnal ◽

10.17580/gzh.2021.03.01 ◽

2021 ◽

pp. 66-71

Author(s):

A. A. Silkin ◽

A. G. Urzhumov ◽

S. V. Rudnev ◽

A. F. Ravshanov

Keyword(s):

Action Plan ◽

Precious Metals ◽

Open Pit Mine ◽

Open Pit ◽

Open Pit Mining ◽

Gold Content ◽

Mining Operations ◽

Open Pit Mines ◽

Engineering Sciences ◽

Extra Activity

Muruntau open pit mine has been in operation since 1967 and is one of the largest open pit mines in the world. As per the project of mining phase V effective since 2020, it is among the world’s three largest open pit mines. The distribution of ore reserves per horizons is analyzed with regard to nature-and-process zones delineated in Muruntau–Myutenbai joint open pit mine. The project parameters of the pit and the scope of mining operations were determined from the geological and mathematical modeling including the detailed survey data and borehole assay results. The open pit mining scenarios within the project limits of mining phase V up to 2030 are considered. The open pit mining scheduling is performed with regard to operational specifics of the deposit, number of nature-and-process zones and duration of the scheduling period. It is concluded that maintenance of the required gold content of ore to be processed needs stimulation of the annual mining output up to 50–60 Mm3 in the easterly direction of the pit at the preserved production output in all nature-and-process zones. To this effect, it is required to formulate a sustainable action plan, with the assigned performance indicators, with regard to the Extra Activity Progr am to Improve Production of Precious Metals at Navoi Mining and Metallurgical Combinat over the period to 2026 and further on to 2040. The authors appreciate participation of Head of a Department at VNIPIpromtekhnologii, Candidate of Engineering Sciences A. V. Seleznev in this study.

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Current state and perspectives in automation of the open pit mining operations

MINING INFORMATIONAL AND ANALYTICAL BULLETIN ◽

10.25018/0236-1493-2019-8-30-115-123 ◽

2019 ◽

Vol 8 (30) ◽

pp. 115-123

Author(s):

A.A. Sobolev ◽

◽

G.V. Sekisov ◽

A.Yu. Cheban ◽

N.M. Litvinova ◽

...

Keyword(s):

Open Pit ◽

Open Pit Mining ◽

Mining Operations ◽

Current State

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An Optimum Deployment Algorithm of Camera Networks for Open-Pit Mine Slope Monitoring

Sensors ◽

10.3390/s21041148 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1148

Author(s):

Hua Zhang ◽

Pengjie Tao ◽

Xiaoliang Meng ◽

Mengbiao Liu ◽

Xinxia Liu

Keyword(s):

Focal Length ◽

Field Tests ◽

Mineral Resources ◽

Video Camera ◽

Open Pit Mine ◽

Mine Safety ◽

Open Pit ◽

Prototype System ◽

Mine Slope ◽

Slope Monitoring

With the growth in demand for mineral resources and the increase in open-pit mine safety and production accidents, the intelligent monitoring of open-pit mine safety and production is becoming more and more important. In this paper, we elaborate on the idea of combining the technologies of photogrammetry and camera sensor networks to make full use of open-pit mine video camera resources. We propose the Optimum Camera Deployment algorithm for open-pit mine slope monitoring (OCD4M) to meet the requirements of a high overlap of photogrammetry and full coverage of monitoring. The OCD4M algorithm is validated and analyzed with the simulated conditions of quantity, view angle, and focal length of cameras, at different monitoring distances. To demonstrate the availability and effectiveness of the algorithm, we conducted field tests and developed the mine safety monitoring prototype system which can alert people to slope collapse risks. The simulation’s experimental results show that the algorithm can effectively calculate the optimum quantity of cameras and corresponding coordinates with an accuracy of 30 cm at 500 m (for a given camera). Additionally, the field tests show that the algorithm can effectively guide the deployment of mine cameras and carry out 3D inspection tasks.

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A GIS Software Module for Environmental Impact Assessment of the Open Pit Mining Projects for Small Mining Operators in Kazakhstan

Sustainability ◽

10.3390/su13126971 ◽

2021 ◽

Vol 13 (12) ◽

pp. 6971

Author(s):

Mikhail Zarubin ◽

Larissa Statsenko ◽

Pavel Spiridonov ◽

Venera Zarubina ◽

Noune Melkoumian ◽

...

Keyword(s):

Environmental Impact ◽

Impact Assessment ◽

Environmental Impact Assessment ◽

Mining Industry ◽

Open Pit ◽

Open Pit Mining ◽

Software Module ◽

Mining Operations ◽

Open Pit Mines ◽

Gis Software

This research article presents a software module for the environmental impact assessment (EIA) of open pit mines. The EIA software module has been developed based on the comprehensive examination of both country-specific (namely, Kazakhstan) and current international regulatory frameworks, legislation and EIA methodologies. EIA frameworks and methods have been critically evaluated, and mathematical models have been developed and implemented in the GIS software module ‘3D Quarry’. The proposed methodology and software module allows for optimised EIA calculations of open pit mines, aiming to minimise the negative impacts on the environment. The study presents an original methodology laid out as a basis for a software module for environmental impact assessment on atmosphere, water basins, soil and subsoil, tailored to the context of mining operations in Kazakhstan. The proposed software module offers an alternative to commercial off-the-shelf software packages currently used in the mining industry and is suitable for small mining operators in post-Soviet countries. It is anticipated that applications of the proposed software module will enable the transition to sustainable development in the Kazakh mining industry.

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