scholarly journals THE USE OF SLOPE HOISTING PLANTS TO CREATE THE CONDITIONS FOR CIRCULAR TRAFFIC OF DUMP TRUCKS

2021 ◽  
Author(s):  
Valeriy Slobodyanyuk ◽  
◽  
Roman Slobodyanyuk ◽  
Keyword(s):  
Operational Performance ◽  
Open Pit ◽  
Technical Solution ◽  
Open Pit Mines ◽  
Rational Field ◽  
Transport Cycle ◽  
Dump Trucks ◽  
Determination Of Parameters ◽  
Technical Solutions

The purpose of this article is to develop and substantiate rational designs of slope hoisting systems for dump trucks in the open pit mines. In order to reduce the time losses associated with idle mileage in the transport cycle, it is proposed to use the slope hoisting plants only for hauling down the empty trucks. The basic arrangements of slope hoisting systems have been analyzed. A rational field of using them has been determined. The lack of experience in operation of slope hoisting systems with multi-rope friction winders, the possibility of reducing a friction ratio due to freezing and wetting the rope leave no chance to recognize this technical solution to be reliable. The article presents the results of the design study and determination of parameters of a hoister with a reeving system of suspension of one platform to haul down the 130-ton trucks. The developed hoisting plant consists of the main parts as follows: two 1-65.6/0.8 single-drum hoisters; a platform for transporting the truck; a headframe for placing the deflection sheaves; two deflection sheaves; two inclined rail tracks to move the platform. The article proposes the new technical solutions for hoisting plants with two platforms, which are alternately used for hauling down the empty trucks. The developed technology promotes improvement of the operational performance of dump trucks in the open pit mines.

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.

scholarly journals Crack Formation in Metal Structures of Heavy Dump Trucks during Operation at Kuzbass Open Pit Mines

2020 ◽  
Vol 174 ◽  
pp. 03020
Author(s):  
Andrey Pokatilov ◽  
Anastasia Shirokolobova ◽  
Roman Dobrynin ◽  
Andrey Vinidiktov
Keyword(s):  
Crack Formation ◽  
Hydraulic Cylinder ◽  
Open Pit ◽  
Strength Analysis ◽  
Structural Elements ◽  
Open Pit Mines ◽  
Metal Structures ◽  
Dump Trucks ◽  
Housing Component ◽  
Cycles To Failure

The results of crack formation monitoring in metal structures of BelAZ heavy dump trucks during their operation at Kuzbass open-casts are given in the article. Possible causes and areas of the crack-like defects formation during operation of heave dump trucks at depths greater than 300 m are considered. The assembly units and elements of heave dump trucks and the areas of the highest total stresses are determined by solid modeling, strength analysis and monitoring of the condition of metal structures under production conditions. The law of crack length development in the areas of the transaxle-housing component and the fastening of the hydraulic cylinder depending on the number of loading cycles is established. The stresses dependence arising in the structural elements of heavy dump trucks during operation under various loads, on the number of loading cycles to failure, is presented.

scholarly journals DEVELOPMENT OF DESIGN METHODS FOR DRILLING AND BLASTING OPERATIONS IN OPEN MINE WORKINGS USING GGIS MICROMINE

2019 ◽  
Vol 1 (1) ◽  
pp. 249-258
Author(s):  
Andrei Basargin ◽  
Valery Salnikov ◽  
Viktor Pisarev
Keyword(s):  
Rock Mass ◽  
High Intensity ◽  
Open Pit ◽  
Design Decisions ◽  
Well Placement ◽  
Open Pit Mines ◽  
Condi Tions ◽  
Additional Costs ◽  
Mine Workings

One of the effective ways of collecting information about the properties of the exploding ar-ray is the use of information obtained in the process of drilling wells. This approach is attractive be-cause it does not violate the existing technology of conducting work in a quarry and does not re-quire additional costs for conducting geological studies related to the determination of the physical and strength characteristics of the component rocks of the block. GGIS Micromine will allow automating the design of drilling and blasting operations while ensuring the well placement, taking into account geometry of the block, properties of rocks, and ra-tional distribution of well charges for the most effective crushing of the rock mass. Under the condi-tions of high intensity mining at the open pit mines of the Micromine GGIS, the design decisions are quick and multifaceted when performing drilling and blasting operations.

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