Aleksey A. Khoreshok

Kuzbass State Technical University · Mining Institute

A significant part of operations that are engaged in surface mining of coal are currently using hydraulic excavators, i.e. backhoes and less often face shovels, which reduces losses and improves productivity. However, a certain number of strip mines, especially those where mining activities are coming to a close, are still using mining rope shovels...

The article proposes the division of the stress state of the rock into local and total levels and introduces the concept of background stress. The influence of background stresses on the energy intensity of the process of rock destruction is proved.

The basis for the creation of underground tunneling devices (UTD) of the "Geokhod" class was laid by the authors on the principle of representing the sinking of underground workings as a process of movement of a solid body (UTD) in a solid medium. One of the main structural elements of the technological structure of the development (formation) of u...

The purpose of the article is to substantiate the type of boundary conditions for modeling the processes of interaction of an external propulsor of a geokhod with the rock of an edge array. The specifics of the interaction of the external propulsor with the geo-environment are presented, and schemes of interaction with mobile and strong media are p...

The relevance and features of the development of an algorithm for assessing solutions for carrying out repair and restoration work of buckets of hydraulic excavators on the basis of modern computer-aided design systems, taking into account the safety of repair work, are considered.

The authors indicate the features of the existing support-propulsion systems of tunneling machines, which cause an artificial increase in metal consumption, limit the scope of application and restrain the development of the scientific and technical level of mining machines. A new class of tunneling machines – the “geokhod” - is presented. The metho...

The study of the technology of excavation and loading operations at more than 15 open pit mines of Kuzbass with the use of trucks shows the general similarity of the technological process in terms of providing transport operations of haul trucks: loading is often carried out at the level of excavator standing, less often – below the level of excava...

The paper substantiates the feasibility of using an equivalent distributed load to simulate the impact of a multi-cutter head on the bottom rock. An example is used to prove the adequacy of the simulation results with the replacement of multiple point loads with an equivalent distributed load.

The analysis of the influence of design features of adapter units on the operational reliability of hydraulic excavator buckets was carried out. The results of modeling the stress-strain state of adapter units of various types using a finite element analysis software package have been obtained. Variants of solving the technical problem have been pr...

Automobile transport currently dominates the transportation of overburden and coal at open pit mines. Its share has been steadily growing since the 1970s. This is due to objective reasons, first of all, a rather limited area of application of railway transport: a significant transport distance, a large cargo traffic and a small depth of the quarry....

Quarry automobile transport is most important in the transportation of overburden and coal in open-cast mining operations. In this article, based on the existing analysis of the use of classic haul trucks, the change in their output is determined by some influencing factors: the type of loading of the rock mass and the bucket capacity of the excava...

owerful shovel-truck systems (STSs) are widely used to perform overburden operations in open-pit mines. One of the main STS problems is the low level of its operation quality. The desire to increase the unit capacity of mining trucks and shovels, which is characteristic of the current stage of open-pit STS development, is not accompanied, however,...

Introduction. The most important modern trend is the development of a «green» economy, especially in terms of efficient management of production and consumption waste. The infrastructural component of such a process is the development and adoption of a regional environmental standard that defines the model for the operation of enterprises that use...

With the complicated geology of vein deposits, their irregular and extremely skewed grade distribution, and the confined nature of gold, there is a propensity to overestimate or underestimate the ore grade. As a result, numerous estimation approaches for mineral resources have been developed. It was investigated in this study by using five machine...

Coalbed gas-water slug flow is an important factor limiting coalbed methane production,but there have been relatively few studies on the patterns of two-phase slug flow in microscale channels. In this study,an independently developed microfluid injection-microscopic observation-microscale modeling system was used to conduct gas-water slug flow expe...

In order to explore the instability and fracture characteristics of red sandstone samples with different moisture condition subjected to combined dynamic and static stress states，the true triaxial unloading dynamic disturbance tests were conducted on red sandstone cubic samples under natural and saturated conditions by adopting the QKX-YB200 true t...

At present, Kuzbass coal strip mines pay great attention to improving quality performance of mining equipment operation, including reliability and durability of components and units. One of the ways of the performance improvement is decreasing number of unforeseen failures. To achieve this purpose a mine dump truck part diagnostics should be introd...

Purpose: to present a systematic analysis of the parameters of sustainable development of the coal-mining region (on the example of the Kemerovo region-Kuzbass) in the light of the growing environmental problems and the strengthening of external shocks. Methods: the methods of comparative analysis, grouping, and analogy were used that were implemen...

The article gives an example of constructing a generalized mathematical model of the interaction processes occurring in geokhod mining. An example of the solution of a particular problem is given, the determination of the values of the forces arising from the interaction of the blade of an external mover with geoenvironment.

When studying the influence of excavator bucket capacity on haul truck loading time, it is necessary to assess the technical and economic performance of the complex. If the cost of the machine shift of the complex will not cover the increase in productivity, then it is inexpedient to use this complex. This issue requires further, more detailed stud...

In the previous work [DOI: 10.26730/2618-7434-2020-4-42-69], we studied the influence of the type of loading of rock mass and the bucket capacity of the used excavator on the performance of an autonomous heavy platform (unmanned mining dump truck). It was found that the productivity of autonomous heavy platforms (ATP) with different types of loadin...

Assessment of the shovel-truck system (STS) operation quality is based on the well-known method of non-expert assessment of the quality of mining machines. The methodology is based on the fundamental principles of qualimetry and allows making the assessment of functionally homogeneous machines of different sizes, types and designs based on the func...

A methodology for assessing the environmental and economic risks of mining enterprises is proposed. The risk characteristics are determined. Proactive measures are proposed in accordance with the development strategy of Kuzbass.

The article deals with a number of important aspects of the aggregate-modular type auger-boring equipment creation, as an integral part of the range of tunneling complexes for mining operations and laying horizontal and slightly deviated holes for various purposes. The importance of improving the support and guide systems, characterized by a variet...

At present, the designing of a power supply system for mine sections is performed in accordance with obsolete regulatory documents made in the early 90s of the 20th century. This slows down the implementation of the ‘digital mining operation’ concept and prevents the full potential for energy savings from being realized. At the same time, developme...

At all stages of creating experimental models and prototypes of a new class of underground machines “Geokhod”, developers faced problems. At the design stage the problem was the lack of methods for determining the parameters of the main elements and systems of underground machines that interact with the geo-environment during their movement. At the...

The article presents the features that characterize the complexity and novelty of the main functional systems of underground machines of the “Geokhod” class as an object of design and production. The authors discuss the problems that developers encountered at all stages of creating test models and prototypes of a new class of underground machines “...

When choosing equipment for working out a coal-bearing zone of a quarry field, one of the most important factors is the use of excavator equipment available at the enterprise. From previously published works, the main advantages and disadvantages of the most common types of excavators (rope shovel and backhoe) are known. In this article, the author...

The article explains the importance of auger technology in mining and underground building. The contribution of the Siberian region to the development of methods for sinking of the horizontal and slightly deviated holes is noted. The modern problems facing the developers of auger complexes are formulated. The prerequisites, methods and results of s...

The article presents some reasons for the lagging of domestic mining engineering from foreign competitors, substantiates the need to form a new promising technological paradigm in the field of formation and development of underground space. A new systematic approach to the development of geotechnics and geotechnologies is proposed, which allows for...

The article presents some reasons for the lagging of domestic mining engineering from foreign competitors, substantiates the need to form a new promising technological paradigm in the field of formation and development of underground space. A new systematic approach to the development of geotechnics and geotechnologies is proposed, which allows for...

In recent years, countries with developed mining industry have actually passed from mechanical shoveling to more productive and advanced hydraulic excavation equipment which improves overall efficiency of open pit mining. An alternative to morally obsolete shovels in open pit mines under operation and construction is hydraulic excavators with worki...

The article deals with the choice of cutterheads for Geokhod in the early development stages. Early development stages are characterized by the lack of quantitative characteristics, such as cutting forces, weight, feed forces, etc. In this case, the choice is made on the accordance of the cutterheads with the requirements for them. Under such condi...

The article considers the question of determining the possible dimensions of the outer grooves of different diameters Geokhods. Taking into account rock properties and destination of outer elements of Geokhod set the height of the outer grooves. The thickness of the outer element is determined by the conditions of their required strength. The set v...

An important task in the technological process of a mining enterprise is preparatory mine working performance, as effective operation of an entire mining complex depends on rate and quality of drilling. Therefore, the main factor affecting the performance of the process of underground mining is the correspondence of design and operating parameters...

The dynamics analysis of coal mining and mine workings in Russia and Kuzbass was made with an assessment of operational productivity and load on fully-mechanized long-walls (FMLW). The article presents statistical data on the average number of FMLW and average monthly productivity of a miner. Disadvantages in the cutters work of working bodies of s...

Oversized tires play a significant role in the mining process for ensuring continuous and safe operation of open cast mining equipment. The article presents the influence of large tires operating temperatures tolong life operation. The results of studies of the tire heating nature during the operation arealso presented. The regression models of stu...

The article describes the interaction model of the external propulsor propeller blade of the geokhod with boundary rock massif. The model makes it possible to investigate the influence of the supporting surface inclination angle of the external geokhod propulsor on the deflected mode of boundary rock massif. The results of modeling and their analys...

Among the reliable tunneling complexes, without which it is impossible to create conditions for such a high-performance process, as mining of mine workings are geokhods. Since the geometric parameters of the external engine and the screw channel vary, the process of interaction of the geokhod systems with the geo- environment and with each other re...

The processes occurring during the geodetic excavation of underground excavations are characterized by the interaction of the elements of the geokhod with each other and with the geo-environment. The interaction process can be investigated in mathematical modeling, solving the problems of justifying the parameters of the drives and interacting forc...

The motion patterns of the cutting body of a roadheader with two kinematically connected reversible radial bits equipped with a disk tool on trihedron prisms are presented. The regularity of the disks motion under the action of forces applied to them is considered with allowance for the moments of inertia. The scheme of forming the depth of intrusi...

Paper studies the problem of non-failure operation of dump trucks hydraulic system that is exploited in the climatic conditions of Kuzbass region. The main characteristic of the Kuzbass climate is hardly continental, so, it has sharp fluctuations in ambient temperature for seasons, for a month or even a day. To analyze the negative factors affectin...

The study presents theoretical and methodological fundamentals of minehaul trucks optimal design. It provides methods based on the systematic approach to integrated assessment of truck technical level and methods for optimization of truck parameters depending on performance standards. The results of these methods application are given.

By the end of the 1950s, the German coal mining industry produced 150 million tons of hard coal per year in 170 collieries with 600,000 employees. At that time, 70% of the primary energy demand of the Federal Republic of Germany was covered by domestic coal. Since the advance of oil, later of natural gas, in the world energy market and with the gro...

The development of open pit mining in the large coal basins of Russia and other countries increases their negative impact on the environment. Along with the damage of land and air pollution by dust and combustion gases of blasting, coal pits have a significant negative impact on water resources. Polluted quarry water worsens the ecological situatio...