scholarly journals "ANALYSIS OF THE REASONS FOR THE LEAD CONCENTRATION INCREASE IN WASTE OIL OF ICE KTA 50 OF BELAZ 75131 GAS-DIESEL OPEN-PIT DUMP TRUCKS"

2021 ◽  
pp. 84-93
Author(s):  
Georgiy M. Dubov ◽  
Aleksandr R. Bogomolov ◽  
Elena A. Grigorieva ◽  
Sergey A. Nokhrin
Keyword(s):  
Lead Concentration ◽  
Open Pit ◽  
Concentration Increase ◽  
Waste Oil ◽  
Dump Trucks

Assessment of maintenance schedule uniformity for Belaz dump trucks in Chernogorsky open pit mine

2018 ◽  
pp. 127-133
Author(s):  
E. A. Vakulin ◽  
V. A. Ivashkevich ◽  
E. I.I. Gnitsak ◽  
V. S. Baikin ◽  
S. P. Maslyukov
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
Time Loss ◽  
Maintenance Schedule ◽  
Monthly Average ◽  
Dump Trucks ◽  
Maintenance Personnel ◽  
Productive Time ◽  
Assessment Results

Uniform schedule maintenance of mining and haulage machines is one of the key conditions for increasing productive time of maintenance personnel and decreasing monthly average servicing time. Currently, Russian mines infringe regulated maintenance schedule aimed to improve output per shift. The loss of time of maintenance personnel and equipment as a consequence maintenance irregularity is never assessed. This article presents assessment results on maintenance schedule uniformity in terms of dump trucks BelAZ-7513 and BelAZ-7530 at Chernogorsky open pit mine, SUEK-Khakassia. A variant of calculation of time loss owing to inconsistent maintenance schedule for dump trucks is proposed. The loss of time by maintenance personnel and by mining/haulage machines is assessed. The fleet of dump trucks BelAZ-7513 and BelAZ-7530 is analyzed depending on overtime of operation between maintenance periods. It is recommended to improve uniformity of maintenance schedule for mining and haulage equipment.

ABOUT THE CAPACITY OF THE RECEIVING HOPPER OF THE QUARRY CRUSHING PLANT

ASJ. ◽  
2021 ◽  
Vol 1 (49) ◽  
pp. 49-51
Author(s):  
I. Zharikov
Keyword(s):  
Carrying Capacity ◽  
Open Pit ◽  
Analytical Expression ◽  
Dump Trucks ◽  
Crushing Plant

The results of the analysis of the application of the methods of the theory of queuing for calculating the capacity of the receiving hopper of an open-pit crushing plant used in combination with a combined automobile-conveyor transport are presented. An analytical expression is given for calculating the capacity of the bunker, taking into account the minimum possible duration of the interval between unloading dump trucks into the bunker. The capacity of the receiving hopper of the crushing plant with a capacity of 4300 t / h was determined when working with dump trucks with a carrying capacity of up to 180 tons.

Experimental testing of open pit dump trucks in operating conditions

2020 ◽  
pp. 530-542
Author(s):  
A. G. Zhuravlev ◽  
M. V. Isakov
Keyword(s):  
Power Plants ◽  
Experimental Testing ◽  
Operating Conditions ◽  
Open Pit ◽  
Dump Truck ◽  
Experimental Measurements ◽  
Complex Data ◽  
Special Unit ◽  
Operating Modes ◽  
Dump Trucks

The high importance of optimizing the operation of quarry transport is confirmed by the leading share of its costs in the total cost of mining. The current direction of optimization is the development and implementation of digital technologies for processing complex data on the parameters of transport vehicles. The solution of the above issues should be based on the results of scientific research on the collection and processing of information. Developed a set of techniques to perform experimental measurements of working parameters of mining dump trucks as part of a special unit experiments, and long monitoring measurements. A set of equipment for performing experimental measurements, as well as its installation on a dump truck is presented. The data of experimental measurements and a methodical approach to their analysis are presented. In particular, it shows the identification of operating modes of the power plant and the construction of the load diagram, the identification of elements of the transport cycle, etc. The approach to substantiation of innovative designs of power plants adapted to the conditions of a particular quarry is shown on the example of calculated schedules of energy consumption and reserve of recovery of braking energy. The proposed hardware-methodical complex is a research model for the development of methods for automated data collection and processing in the formation of elements of digital mining production.

scholarly journals Temperature parameters in the combustion chambers of CUMMINS KTA-50 engines operating on various fuels under different fuel consumption rates

2021 ◽  
Vol 315 ◽  
pp. 03011
Author(s):  
Georgiy Dubov ◽  
Alexander Bogomolov ◽  
Sergey Azikhanov ◽  
Pavel Strelnikov ◽  
Sergey Nokhrin
Keyword(s):  
Natural Gas ◽  
Fuel Consumption ◽  
Combustion Engine ◽  
Energy Charge ◽  
Motor Fuel ◽  
Liquefied Natural Gas ◽  
Open Pit ◽  
Mining Equipment ◽  
Evaporator Temperature ◽  
Dump Trucks

The issue of a comparative study of fuel consumption and temperature characteristics of gas-diesel BelAZ 75131 mining dump trucks equipped with an on-board cryogenic fuel system and hauling rock mass at the Kuzbass open-pit coal mine is considered in the article. A brief analysis of the efficiency of using liquefied natural gas (LNG) - methane - as a motor fuel for mining dump trucks is carried out. It is noted that the use of LNG fuel for heavy-duty dump trucks is one of the most promising ways to improve the environmental and economic performance during the operation of this type of mining equipment. The technique and instrumental base for conducting research are presented. The relationship between natural ratios of diesel fuel replacement with natural gas and the energy charge of these replacement is studied. The following data are presented: data on the consumption of vaporous (gaseous superheated) natural gas (hereinafter gaseous natural gas) during field operation of gas-diesel BelAZ 75131 mining dump trucks; flow rate of gaseous natural gas in pipelines; consumption of antifreeze at the inlet to the liquefied natural gas evaporator, as well as antifreeze temperature at the inlet and outlet of the evaporator; temperature of gaseous natural gas at the outlet of the reducer after the evaporator; data on the comparison of temperature profiles in the cylinders of CUMMINS KTA 50 internal combustion engine under diesel and gas-diesel operation.

scholarly journals On possible changes in the calculation of parameters of transport technology of open pit mining with the use of autonomous heavy platforms

2021 ◽  
Vol 315 ◽  
pp. 03015
Author(s):  
Dmitry Stenin
Keyword(s):  
Positive Impact ◽  
Open Pit ◽  
Open Pit Mining ◽  
General Study ◽  
Open Pit Mines ◽  
Calculation Of Parameters ◽  
Transport Component ◽  
Urgent Task ◽  
Transport Cycle ◽  
Dump Trucks

Reducing the costs of the transport component, reaching up to 50% or more of the total cost of the mined coal, is an urgent task that does not require additional confirmation. Since the development of measures to improve the purely technical indicators of motor transport at open-pit mines is beyond the scope of the general study, we will limit ourselves to the search for technological solutions that can have a positive impact on the overall cost of production. This may include, for example, the search for solutions to reduce the duration of the transport cycle and optimization of its components. It is also necessary to study the possible changes in the indicators of the transport technology of open-pit mining when using classic open-pit dump trucks and autonomous heavy platforms (unmanned open-pit haul trucks). The article presents an analysis of existing technical and technological solutions and research on the use of unmanned transport technologies. It is established that the parameters of transport technology will change to some extent with the introduction of unmanned heavy platforms, which will inevitably lead both to the correction of the existing regulatory documentation, and a possible revision of the classical postulates of open-pit mining.

Changes in the Atmospheric Pressure as an Unfavorable Factor of Work in the Deep Open Pits

2021 ◽  
pp. 35-38
Author(s):  
O.N. Dragunskiy ◽  
◽  
M. Rivkin ◽  
Keyword(s):  
Blood Pressure ◽  
Atmospheric Pressure ◽  
Dead Sea ◽  
Open Pit ◽  
Open Pit Mining ◽  
Sharp Change ◽  
Normative Documents ◽  
Dump Trucks ◽  
The Dead

The need in considering changes (including sharp) of the atmospheric pressure during the operation of deep open pits as one of the unfavorable factors is substantiated. It is believed that the atmospheric pressure in a particular region varies slightly-within 30–40 mm Hg per year. But at the present time, when only in Russia there are five open pits with a depth of 500 m and more, it is impossible to ignore changes in the atmospheric pressure in relation to workers moving, for example, by motor transport, from the surface to the bottom of the open pit and back. In this case, it can change by 50 or more mm Hg in half an hour. To solve the related problems, it is required to find out how atmospheric pressure affects the blood pressure of the open pit workers. The experience of the Dead Sea Clinic located in Israel at the Dead Sea at a depth of more than 400 m below the sea level is taken as a basis. Long-term measurements of the blood pressure in patients of the clinic revealed a tendency to decrease it by an average of 10–20 mm Hg. To prevent the adverse effect of a sharp change in the atmospheric pressure on people working in deep open pits, it is required to provide for appropriate measures of a different nature: technological (provide for changes in the characteristics of the open pit roads to ensure smoother descents and ascents of the dump trucks); technical (use of the conveyor and combined transport); organizational (including changes in the work and rest regimes of the working employees); regulatory (amendments to the relevant safety rules and other normative documents). To apply the results obtained in the open pit mining, it is necessary to conduct appropriate research in the operating deep open pits.

scholarly journals Development of Technical Requirements for On-Board Cryogenic Fuel Systems of Belaz Dump Trucks

2019 ◽  
Vol 297 ◽  
pp. 03002 ◽  
Author(s):  
Georgiy Dubov ◽  
Dmitriy Trukhmanov ◽  
Sergey Nokhrin ◽  
Aleksey Sergel
Keyword(s):  
Natural Gas ◽  
Motor Fuel ◽  
Liquefied Natural Gas ◽  
Open Pit ◽  
Promising Alternative ◽  
Technical Requirements ◽  
Production And Consumption ◽  
Dump Trucks ◽  
First Time ◽  
Further Development

The state-of-the-art of the issue of the efficiency and relevance of the use of liquefied natural gas (LNG) as a motor fuel in the operation of dump trucks is considered. An analysis of the benefits of using LNG as a motor fuel is given. It is noted that, LNG seems to be the most promising alternative to oil types of motor fuel in the segment of open-pit truck haulage. It is affirmed that in Russia, in Kuzbass, the group of companies successfully implemented for the first time an integrated project for the production of LNG and its consumption in relation to BelAZ dump trucks. Data on the relevance and the need to develop technical requirements for on-board cryogenic fuel systems of mine dump trucks are given. Data on the developed groups of technical requirements for on-board cryogenic fuel systems of BelAZ dump trucks are given. It is said that the developed technical requirements made it possible to solve a number of tasks related to the development of circuit and design solutions for equipping BelAZ dump trucks with cryogenic systems. It is argued that the developed technical requirements will contribute to the further development of domestic projects for the production and consumption of liquefied natural gas.

Use of Onboard Liquefied Natural Gas Fuel Systems for Open-Pit Dump Trucks

2005 ◽  
Vol 41 (7-8) ◽  
pp. 429-433
Author(s):  
V. E. Gerasimov ◽  
V. A. Peredel'skii ◽  
R. V. Darbinyan
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Open Pit ◽  
Dump Trucks ◽  
Gas Fuel

scholarly journals The Results of Mining and Geometric Analysis in Open Pit Mining of Promising Kuzbass Coal Deposits with Block System

2020 ◽  
Vol 174 ◽  
pp. 01020
Author(s):  
Alexei Selyukov ◽  
Andrey Gerasimov ◽  
Valery Grishin
Keyword(s):  
Geometric Analysis ◽  
Open Pit ◽  
Open Pit Mining ◽  
Overburden Rock ◽  
Mining Method ◽  
Resource Saving ◽  
Development Costs ◽  
Coal Deposits ◽  
Dump Trucks ◽  
Mining Procedure

Currently, in developing the most inclined and steep coal deposits in the Central and Northern Kuzbass (Western Siberia, Russia), the deeping longitudinal open pit mining method is used with overburden rock moved to external dumps using transport technology. One of the ways to reduce the rate of land withdrawal while reducing development costs by shortening the distance of overburden movement is to use block lateral mining method with overburden storage in the worked out space. The paper emphasizes that well-known technological solutions consider quarry fields untouched by mining, or in the process of exploitation, so the block mining procedure is using fragmentally along with moving overburden by dump trucks. Internal dumping, as an element of land preservation, has not been generally considered to date. This is a deterrent to the implementation of resource-saving mining technologies, both in design and mining practice.

Sign in / Sign up

Export Citation Format

Share Document