scholarly journals Technological Adaptation of Internal Dumping to the Operating Mode of Open Pit when Developing Inclined and Steeply Dipping Coal Seams Strata

2021 ◽  
Vol 315 ◽  
pp. 01015
Author(s):  
Alexei Selyukov
Keyword(s):  
Surface Mining ◽  
Operating Mode ◽  
Open Pit ◽  
Surface Mines ◽  
Technological Adaptation ◽  
Coal Deposits ◽  
Mining Front ◽  
Mining Methods ◽  
Further Development ◽  
Internal Dumping

With surface mining of inclined and steeply dipping coal deposits, the so-called deeping longitudinal mining methods with a gradual deepening of mining from the surface to the final depth are widely spread, while orienting the mining front along the strike line of the seams (strata). When using such mining methods, the volumes of internal dumping are limited or completely absent; there is a peak-like increase in overburden volumes and transportation distance, the land resources disturbing proceeds at a progressive pace. In this regard, it is obvious that an important production task is to find technological solutions and methods to develop coal deposits that reduce the environmental hazard and increase resource conservation in mining by placing overburden in the mined-out space while reducing the area for external dumps and disturbing the earth's surface. If this is not foreseen at the present time, then all coal surface mines in the coming decades will be limited by their own external dumps of overburden, and their further development will be problematic.

scholarly journals Parameters of Transition from Deepening Longitudinal to Continuous Lateral Surface Mining Methods to Decrease Environmental Damage in Coal Clusters

Energies ◽  
2020 ◽  
Vol 13 (13) ◽  
pp. 3305 ◽  
Author(s):  
Sergey Zhironkin ◽  
Alexey Selyukov ◽  
Magerram Gasanov
Keyword(s):  
Surface Mining ◽  
Economic Benefits ◽  
Environmental Damage ◽  
Mining Method ◽  
Surface Mine ◽  
Coal Deposits ◽  
Internal Dump ◽  
Mining Front ◽  
Internal Dumping ◽  
Choice Of Technology

The present paper deals with an original way to reduce the environmental damage caused to land and air resources by surface coal mines with external dumping, due to the transition to internal dumping with filling the worked out space of the surface mine with overburden. The basic principle of the proposed idea is the transition from the deepening longitudinal mining method for the development of inclined and steep coal seam strata to lateral ones. This article substantiates the choice of technology for a block-and-layer continuous lateral mining method, including the construction of a first-stage pit, the use of a combined transport and direct dumping technology for moving overburden to an internal dump when mining blocks using draglines. The advantage of the presented technology, along with filling the internal capacity of the surface mine field with overburden, is the possibility of leveling the relief within the boundaries of the pit allotment and the implementation of reclamation as the mining front moves forward, without waiting for the dump to be completely filled in the boundary contours. Attention is also paid to the economic benefits of block-layer technology and the continuous lateral mining method, in the transition to which the overburden transporting costs can be significantly reduced, while the limitations of the proposed method’s implementation concern specific coal deposits that make up a small part of the fields being developed today by surface mining.

scholarly journals A Multiple Criteria Decision Making Method to Weight the Sustainability Criteria of System Selection for Surface Mining

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3066
Author(s):  
Michał Patyk ◽  
Przemysław Bodziony ◽  
Zbigniew Krysa
Keyword(s):  
Decision Making ◽  
Performance Assessment ◽  
Multiple Criteria Decision Making ◽  
Surface Mining ◽  
Open Pit ◽  
Mining Equipment ◽  
Surface Mines ◽  
Mining Conditions ◽  
And Performance ◽  
Selection Of

Selection and assessment of mining equipment used in open pit rock mines relies chiefly on estimates of overall exploitation cost. The rational arrangement of mining equipment and systems comprising loading machines, haul trucks and crushing plants should be preceded by a thorough analysis of technical and economic aspects, such as investment outlays and the costs of further exploitation, which largely determine the costs of mining operations and the deposit value. Additionally, the operational parameters of the mining equipment ought to be considered. In this study, a universal set of evaluation criteria has been developed, and an evaluation method has been applied for the selection of surface mining equipment and the processing system to be operated in specific mining conditions, defined by the user. The objective of this study is to develop and apply the new methodology of multi-criteria selection of open pit rock mining equipment based on multiple criteria decision-making (MCDM) procedures, to enable the optimization of loading, handling and crushing processes. The methodology, underpinned by the principles of MCDM, provides the dedicated ranking procedures, including the ELECTRE III. The applied methodology allows the alternative options (variants) to be ranked accordingly. Ultimately, a more universal methodology is developed, applicable in other surface mines where geological and mining conditions are similar. It may prove particularly useful in selection and performance assessment of mining equipment and process line configurations in mining of low-quality rock deposits. Therefore, we undertook to develop universal criteria and applications for the selection and performance assessment of process machines for surface mines, taking into account environmental aspects as well as deposit quality.

scholarly journals On evaluation of complex-structured coal deposits based on their typical geometric features

2021 ◽  
Vol 303 ◽  
pp. 01029
Author(s):  
Alexander Katsubin ◽  
Victor Martyanov ◽  
Milan Grohol
Keyword(s):  
Surface Mining ◽  
Geological Structure ◽  
Point Of View ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Coal Deposits ◽  
Geological Conditions ◽  
Wide Range ◽  
Large Length

Information about the geological structure of Kuznetsky coal basin (Kuzbass) allows us to note that coal deposits developed by open-cast method are characterized by complicated conditions and have the following features: large length of deposits at significant depths of occurrence; coal series bedding of different thicknesses (from 1 to 40 m); different dip angles (from 3 to 90º); a significant number of dip and direction disturbances; different thickness of unconsolidated quaternary sediments (from 5 to 40 m); a wide range of strength values of rocks. In addition, there is a thickness irregularity and frequent variability of elements of occurrence of coal seams within the boundaries of a quarry field both in length and depth of mining. From the point of view of open-pit mining, such deposits are complex-structured. The factors listed above have a decisive influence on the choice of technical means, the order of development and the possibility of carrying out surface mining operations. Therefore, there is a need for a systematization of mining and geological conditions for the development of coal deposits, the purpose of which is to ensure a process of evaluation of complex-structured coal deposits for the development of coal-bearing zones by various complexes of equipment.

scholarly journals Current State and Development Prospects of Autonomous Haulage at Surface Mines

2020 ◽  
Vol 174 ◽  
pp. 01028
Author(s):  
Yuri Voronov ◽  
Artyom Voronov ◽  
Daulet Makhambayev
Keyword(s):  
Human Factor ◽  
Surface Mining ◽  
Operating Costs ◽  
Existing Problems ◽  
Surface Mines ◽  
Current State ◽  
Constituent Elements ◽  
Further Development ◽  
Development Prospects

Autonomous (or unmanned) haulage systems have been used in surface mining for more than 10 years. Most of the equipment at such mines is remotely controlled by electronics, for which they are sometimes called “smart mines”. The elimination of the “human factor” from the pro- duction process should theoretically increase its safety and productivity, as well as reduce the operating costs of its implementation. However, despite the obvious advantages of this technology, it is not spreading as fast as ex- pected. This suggests that there are a number of problems that limit its de- velopment. In this paper, a review and analysis of the experience in the in- dustrial implementation of autonomous haulage in surface mining is car- ried out in order to identify existing problems and possible directions for their further development. The prerequisites, a brief history and some im- portant results of the introduction of autonomous haulage systems in sur- face mining, their main types and constituent elements are outlined, as well as the existing problems and expected directions of their development are highlighted.

scholarly journals Analysis of combined open-pit and underground mining method for Кuzbass coal deposits

2021 ◽  
Vol 330 ◽  
pp. 01006
Author(s):  
Valeriy Fedorin ◽  
Vyatcheslav Shakhmatov ◽  
Gleb Opruk ◽  
Yelena Kuznetsova
Keyword(s):  
Coal Mining ◽  
Underground Mining ◽  
Mining Industry ◽  
Open Pit ◽  
Mining Method ◽  
Coal Mining Industry ◽  
Advanced Technologies ◽  
Modern Development ◽  
Coal Deposits ◽  
Mining Methods

Modern development of coal mining industry in Kuzbass is carried out using advanced mining techniques. Analysis of its geological and technological conditions is performed with respect to the development of advanced technologies in related coal mining methods, developing combined (open-pit and underground) geotechnologies for complex mining of coal deposits.

Economic and Technical Analysis of Thick Coal Seam Mining Methods

2012 ◽  
Vol 170-173 ◽  
pp. 872-875
Author(s):  
Xiang Min Zhao ◽  
Peng Yang
Keyword(s):  
Surface Mining ◽  
Economic Security ◽  
Open Pit ◽  
Open Pit Mining ◽  
Coal Seams ◽  
Operating Personnel ◽  
Thick Coal Seam ◽  
Geological Conditions ◽  
Mining Methods ◽  
Seam Mining

Common mining methods for thick coal seams or extremely thick coal seams has slice mining top coal caving mining, greater height mining, and surface mining. From the perspective of economic and technological mining method, the choice of methods should be fully taken into account the technical, economic, quality of operating personnel, equipment, geological conditions. It allows priority to open-pit mining, and then according to the thickness, coal quality, coal other factors to select the top coal caving or mining of high extraction methods which can achieve the economic, security, and efficient purposes. Conversely, if the method is poor choice, it will certainly lead to economic and time losses.

scholarly journals Open Pit Mining

2021 ◽  
Author(s):  
Awwad H. Altiti ◽  
Rami O. Alrawashdeh ◽  
Hani M. Alnawafleh
Keyword(s):  
Slope Angle ◽  
Surface Mining ◽  
Open Pit ◽  
Open Pit Mining ◽  
Capital Investments ◽  
High Productivity ◽  
Angle Stability ◽  
Mining Methods ◽  
Artisan Mining ◽  
Operation Cycle

Open pit mining method is one of the surface mining methods that has a traditional cone-shaped excavation and is usually employed to exploit a near-surface, nonselective and low-grade zones deposits. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions. The main topics that will be discussed in this chapter will include an introduction into the general features of open pit mining, ore body characteristics and configurations, stripping ratios and stripping overburden methods, mine elements and parameters, open pit operation cycle, pit slope angle, stability of mine slopes, types of highwall failures, mine closure and reclamation, and different variants of surface mining methods including opencast mining, mountainous mining, and artisan mining.

scholarly journals Surface Mines of Mining Area Žacléř – Creating and Using of Financial Reserves for Remediation and Reclamation

2018 ◽  
Vol 64 (2) ◽  
pp. 6-11
Author(s):  
Kristýna Honová ◽  
Jiří Mališ
Keyword(s):  
Coal Mining ◽  
Surface Mining ◽  
Mining Area ◽  
Open Pit ◽  
Coal Surface ◽  
Mining Company ◽  
Open Pit Mines ◽  
Surface Mines ◽  
And Control

Abstract Companies engaged in mining are legally obliged to ensure remediation and reclamation of land affected by mining. Creation and use of financial reserves are subject to approval and control of the Mining Authorities. However, the methodology of creating financial reserves is decided by the mining company itself. In the paper, we describe the methods of creating financial reserves of a specific mining company GEMEC Union for remediation and reclamation after coal surface mining. The paper provides chronological comparisons of coal mining in two open pit mines, including the principles for creating and using financial reserves for remediation and reclamation.

Management and engineering solutions to improve stripping equipment efficiency in Chernogorksy open pit mine

2018 ◽  
pp. 36-48
Author(s):  
G. N. Shapovalenko ◽  
S. N. Radionov ◽  
V. V. Gorbunov ◽  
V. A. Khazhiev ◽  
V. Yu. Zalyadnov ◽  
...  
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
High Concentration ◽  
Open Pit Mines ◽  
Blasting Operation ◽  
Internal Dump ◽  
Mining Conditions ◽  
Mining Front ◽  
Comparison Of Equipment

Chernogosky open pit mine integrates truck-and-shovel system of mining with overburden rehandling to internal dump with a set of walking excavators for rehandling of overburden to mined-out area of the pit. It is possible to improve efficiency of stripping in the conditions of Chernogorsky OPM by reducing percentage of stripping with more expensive handling system. The relevant research and solutions to this effect are presented in this article. Comparative characterization of mining conditions and parameters of mining systems applied is given for open pit mines Chernogorsky, Turnui, Nazarovsky, Vostochno-Beisky and Izykh. The comparative analysis points at the need to account for difficulty of mining and process sites in comparison of equipment productivity. High concentration of mining machines, which is conditioned by narrow mining front and simultaneous operation of five faces, as well as blasting operation implemented every 1-2 days, are recognized as the main constraints of excavator capacity in mining with direct dumping in Chernogorsky open pit mine. The management and engineering solutions implemented in the mine and resulted in higher efficiency of draglines are described.

Advanced Systems to Prevent Collisions of Mining Equipment and Personnel Accidents in Surface Mining

2020 ◽  
pp. 24-29
Author(s):  
A.F. Klebanov ◽  
M.V. Kadochnikov ◽  
V.V. Ulitin ◽  
D.N. Sizemov
Keyword(s):  
Human Life ◽  
Surface Mining ◽  
Production Cycle ◽  
Mining Equipment ◽  
Mining Operations ◽  
Emergency Situations ◽  
Surface Mines ◽  
Technical Requirements ◽  
Personal Devices ◽  
Blind Spots

The article addresses the issues of ensuring safe operation of mining equipment in surface mining. It describes the main factors and situations that pose a high risk to human life and health. The most dangerous incidents are shown to be related to limited visibility and blind spots for operators of mining equipment, which can result in collisions and personnel run over. The main technologies and specific solutions used to design collision avoidance systems are described and their general comparison is provided. A particular focus is placed on monitoring the health of employees at their workplace by means of portable personal devices that promptly inform the dispatcher of emergency situations. General technical requirements are formulated for designing of the system to prevent equipment collisions and personnel run over in surface mining operations. The paper emphasizes the importance of introducing a multifunctional safety system in surface mines in order to minimise the possibility of incidents and accidents throughout the entire production cycle.

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