scholarly journals Road longitudinal slope influence on the efficiency of excavator-automobile complexes usage

2021 ◽  
Vol 315 ◽  
pp. 01022
Author(s):  
Andrey Kudrevatykh ◽  
Andrey Furman ◽  
Andrey Ashcheulov
Keyword(s):  
Road Transport ◽  
Coal Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Production Scale ◽  
Equipment Operation ◽  
Mining Conditions ◽  
Problematic Issue ◽  
Longitudinal Slope ◽  
Pit Depth

At present, the country's coal industry pays special attention to the open-pit mining, because of its higher efficiency and profitability. According to various surveys, currently the share of open-pit mining is 50 - 65%, and it will increase to 80 - 85% in the future. The development of an open-pit mining is accompanied by production scale increase, open pits depth increases and complexity of mining conditions of main technological equipment operation increases. With the increase of open pits depth, technological road transport becomes the most problematic issue in mining, since open-pit depth enlargement increases the distance of transportation and roads longitudinal slopes and these factors reduce the efficiency of excavator-automobile complexes.

scholarly journals The Analysis of Conditions of Hydraulic Backhoes Use in the Coal-Bearing Zones at Kuzbass Open Pits

2018 ◽  
Vol 41 ◽  
pp. 01027
Author(s):  
Andrew Strelnikov ◽  
Michal Radek ◽  
Markus Stolz ◽  
Ralf Rosenberg
Keyword(s):  
Sharp Increase ◽  
Western Siberia ◽  
Coal Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Mining Operations ◽  
Market Relations

The period of open pit mining development in Kuzbass (Western Siberia, Russia) until the mid-1990s was characterized by the application of rope and hydraulic shovels in coal-bearing zones, the work of which is not effective enough due to a decrease in productivity in mining operations, high losses and dilution of coal. The supply of this type of excavators was fully provided by Russian excavators' manufacturers. With the transition to market relations since the early 90's, in the coal industry of the Kuzbass two interrelated phenomena have occurred. First, the restructuring of coal industry and the massive privatization of licensed development of explored deposits forced a sharp increase in the open pit construction (from 24 in the early 1990's to 62 now). Secondly, the bankruptcy of excavators' manufacturers led to a reduction in the volume of production of domestic rope shovels. So the problem of defining the conditions of hydraulic backhoes use in the coal-bearing zones became very important.

CURRENT STA TE OF THE RESOURCE BASE OF COAL MINING INDUSTRY IN KUZBASS

2019 ◽  
Vol 4 (1) ◽  
pp. 177-186
Author(s):  
S.V. Shaklein ◽  
◽  
M.V. Pisarenko ◽  
Keyword(s):  
Coal Mining ◽  
Mining Industry ◽  
Coal Industry ◽  
Raw Material ◽  
Open Pit ◽  
Open Pit Mining ◽  
Material Base ◽  
Resource Base ◽  
Production Technologies ◽  
Underground Method

Analysis of the grade composition of the mineral resource base of the distributed and undistributed subsoil Fund as of 01.01.2018 showed a decrease in reserves of coal intended for open pit mining. In the future, the production of a number of technological grades of coal (gas fat (GZh), fat (Zh), coking fat (KZh), coking (K), coking caking low-metamorphized (KCN), coking caking (KC), lean caking (OC), low caking (CC) is possible only by underground method. The expansion of the raw material base of the Kuzbass coal industry and the support of coal production volumes, primarily by the technological of grades coking fat (KZh), coking (K), coking caking (KC), lean caking (OC), low caking (CC) involves exploration, the use of unconventional production technologies and tax preferences for coal mining enterprise

scholarly journals MINING AND CONVEYOR EQUIPMENT OPERATION ORGANIZATION IMPROVEMENT IN “SBU-COAL”, HOLDING COMPANY OJSC OPEN-PIT MINING ENTERPRISES

Ugol ◽  
2016 ◽  
pp. 14-19
Author(s):  
L.V. Rybak ◽  
◽  
Yu.S. Deryabin ◽  
S.V. Burtsev ◽  
V.E. Stihurov ◽  
...  
Keyword(s):  
Open Pit ◽  
Open Pit Mining ◽  
Equipment Operation ◽  
Holding Company

On determining the parameters of face blocks during mining operations with backhoes

2022 ◽  
pp. 76-81
Author(s):  
O.I. Litvin ◽  
Ya.O. Litvin ◽  
M.A. Tyulenev ◽  
S.O. Markov
Keyword(s):  
Open Pit ◽  
Open Pit Mining ◽  
Kuznetsk Coal ◽  
Coal Basin ◽  
Mining Operations ◽  
Kuznetsk Coal Basin ◽  
Equipment Operation ◽  
Mining Companies ◽  
The Face ◽  
The Given

The backhoe hydraulic shovels (backhoes) have been widely used in open-pit mining operations in the Kuznetsk coal basin since the early 2000s. Now their number is growing every year, both because new operations begin on new sites, and because of the backhoe advantages. However, up to now parameters of their operation, more particularly the parameters of the face blocks, are often taken according to the actual data, i.e. based on the accumulated experience of the mining companies, and are not calculated using the approved scientifically validated methods. In the given article the authors give some preconditions for creation of a uniform methodology to calculate parameters of the face blocks depending on mining-geological and miningtechnical conditions. It is noted that the manufacturers of excavation equipment quote the data corresponding to the maximum possible parameters of the equipment operation, in particular the height of the excavated layer, as a result of which it is rather difficult to apply this in practice. Preliminary conclusions about the need to take into account the diversity of the above conditions and their interrelation with the parameters of a particular model of the excavation and loading equipment have been made.

scholarly journals Factor Model of Labor Productivity in the Coal Industry

2021 ◽  
Vol 2020 (4) ◽  
pp. 557-567
Author(s):  
Evgeny Kharlampenkov ◽  
Irina Kudryashova
Keyword(s):  
Information Technologies ◽  
System Analysis ◽  
Underground Mining ◽  
Multiplicative Model ◽  
Coal Industry ◽  
Open Pit ◽  
Practical Significance ◽  
Open Pit Mining ◽  
Labor Costs ◽  
Labor Efficiency

The article introduces the problem of increasing the labor efficiency at Russian coal enterprises. Using the case of Kuzbass, the authors examined factors that affect labor efficiency in coal industry, e.g. new equipment and mining technologies, qualified personnel, robotics, new quality management and information technologies, etc. They used a multiplicative model to estimate the key factors and made forecast of its dynamics up to 2035 for open and underground mining. The authors believe that effective models of mining enterprise management are impossible without a radical increase in labor efficiency, since it indicates labor costs in the production of the final product per unit of time. Labor efficiency in the open-pit mining is higher, as it has lower labor costs and offers a simple and safe way of organizing labor processes. However, new equipment can increase the efficiency of underground mining. Underground mines also demonstrate a faster growth of labor efficiency than open pits. The authors justified the need to assess labor efficiency using a system analysis and a multiplicative model. As global coal market continues to deteriorate, mining labor efficiency can still maintain positive long-term rates of growth if it manages to optimize deliveries and increase the labor efficiency at the federal level. The research possesses considerable theoretical and practical significance as it offers a solution for of the most relevant challenges.

CURRENT STATE OF THE RESOURCE BASE OF COAL MINING INDUSTRY IN KUZBASS

2020 ◽  
Vol 2 (1) ◽  
pp. 191-201
Author(s):  
S.V. SHAKLEIN ◽  
◽  
M.V. PISARENKO ◽  
◽  
Keyword(s):  
Coal Mining ◽  
Mining Industry ◽  
Coal Industry ◽  
Raw Material ◽  
Open Pit ◽  
Open Pit Mining ◽  
Material Base ◽  
Resource Base ◽  
Current State ◽  
Production Technologies

Analysis of the grade composition of the mineral resource base of the distributed and undistributed subsoil Fund as of 01.01.2018 showed a decrease in reserves of coal intended for open pit mining. In the future, the production of a number of technological grades of coal (gas fat (GZh), fat (Zh), coking fat (KZh), coking (K), coking caking low-metamorphized (KCN), coking caking (KC), lean caking (OC), low caking (CC) is possible only by underground method. The expansion of the raw material base of the Kuzbass coal industry and the support of coal production volumes, primarily by the technological of grades coking fat (KZh), coking (K), coking caking (KC), lean caking (OC), low caking (CC) involves exploration, the use of unconventional production technologies and tax preferences for coal mining enterprise

Maximal stiffness of elastically damping device in traction of draglines

2021 ◽  
pp. 79-83
Author(s):  
I. N. Klementieva ◽  
D. A. Kuziev
Keyword(s):  
Natural Frequency ◽  
Coal Industry ◽  
Coal Extraction ◽  
Open Pit ◽  
Open Pit Mining ◽  
Operating Cycle ◽  
Efficient Reduction ◽  
The Government ◽  
The Moment

One of the critical objectives set by the long-term program of the coal industry development up to 2030, approved by the Government of the Russian Federation is coal extraction by the most effective open pit mining method using draglines. Traction of draglines is composed of a drive winch and rope transmissions. Digging (excavation) duration makes up to 30% of the total operating cycle of a dragline. During digging, the traction, drive, gears and rope transmissions of a dragline are exposed to considerable dynamic loads. Deloading of the dragline traction is achievable through the use of an elastically damping device inserted in the rope transmission. With longer duration of the bucket performance, the force in the drag cables grows consequent on the increase in the digging resistance, tangential weight of the filled bucket and in the bucket–rock friction force as a result of the growing mass connected to the drag cables. At the same time, stiffness of the drag cables increases as their length gets shorter. Put it otherwise, the natural frequency in the drag cables–bucket system is a variable value and varies from the moment of the bucket breakaway up to the moment of digging termination. It is shown analytically that the efficient reduction in dynamic loading requires that the natural frequency of the elastic damper mounted in the rope transmission of a dragline is lower than the natural frequency in the rope cables–bucket system at the end of digging.

THE DETERMINATION OF THE FUEL CONSUMPTION OF MINING DUMP TRUCKS

2020 ◽  
pp. 557-567
Author(s):  
B. Purewtogtoh ◽  
B. Byambadagwa ◽  
B. Enchuluun
Keyword(s):  
Fuel Consumption ◽  
Open Pit ◽  
Practical Significance ◽  
Open Pit Mining ◽  
Dump Truck ◽  
Mining Conditions ◽  
Dump Trucks ◽  
Intensive Development

The intensive development of an open-pit mining method is usually accompanied by an increase in the depth of quarries and the complexity of other mining conditions, in which the role of quarry vehicles increases significantly. In this regard, the study and justification of rational parameters of operation of technological vehicles is very relevant and has important practical significance. New methods for determining fuel consumption have been developed based on the regularities established as a result of the study of the dependence on mining and technical conditions and physical load of the dump truck on this section of roads.

scholarly journals Development Status of Coal Mining in China

2021 ◽  
Author(s):  
liu xinjie ◽  
Li Lianghui ◽  
Yang yingming
Keyword(s):  
Coal Mining ◽  
Underground Mining ◽  
Coal Mines ◽  
Production Capacity ◽  
Coal Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Development Status ◽  
Average Production ◽  
Speed Up

Abstract As a controllable active resource in China, coal mining is facing the transition from output to quality. Base d on the total mining production and average capacity, the current situation and level of coal mining at three scales of mine, city and province is analyzed , data support for the layout of sustainable mining development and the optimization of output is provided. The results show that China's coal is mainly mined by underground mining, accounting for 87%, with an average production capacity of 0.93 million tons. Open pit mining accounts for 13%, with an average production capacity of 5.73 million ton s. S o t he average production capacity of open pit and underground workers is 1.045 million tons, with 1,181 coal mines capacity lower than 0.3 million tons, accounting for 35% of the total coal mines, contributing only 4% to their output. They are distributed in about 48 cities in 6 provinces, seriously restricting the green coal mining. The coal industry should speed up the reduction of small coal mines in key provinces and cities, eliminate outdated product ion capacity in the central region, increase the speed and proportion of coal resources moving westward, and promote high quality development of coal mining.

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