Proceedings of the 8th Russian-Chinese Symposium “Coal in the 21st Century: Mining, Processing, Safety"

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75 articles

Research on impact characteristics of inclined coal-rock composite body

Tan Yunliang, Zhang Yubao
In this paper, the coal-rock composite models with different inclined angles were established using particle flow code, and the impact instability characteristics after unloading were analyzed. In addition, the evolution process of impact energy was studied. The research results show that the strain...

Simulation and Field Measurement Study on Roof Strata Behavior of Fully Mechanized Caving Face

Liu Weitao, Song Wencheng, Wang Jianning
In order to reveal the related law between strata behavior and rock burst of fully mechanized caving face, this paper discussed the relationship between the distribution of abutment pressure and energy in front of the coal wall of fully mechanized caving mining face from the point of view of energy....

Determination of Seismic Safe Distances During Mining Blasts with Consideration of a Dominant Vibration Frequency

Aleksey Novinkov, Aleksandr Tashkinov, Sergey Protasov
A method for determining seismic safe distances for blasting operations in mines, taking into account the value of dominant frequencies of the earth surface vibrations is proposed. The method is based on a regression analysis of the experimental data; the method is characterized by a familiar and simple...

Modeling of Geomechanical Processes Case of Uneven Settling of Foundations Constructions

Mikhail Sokolov, Sergey Prostov
The results of forecasting the development of uneven settlement of buildings according to computer simulation of soil foundations with various geological structure using the software package «Alterra». The regularities of uneven vertical displacements and changes in the stress-strain state of the soil...

Evaluation of the Open Pit Vehicles Loading Influence on the Reliability of Motor – Wheel Reducers

Dmitriy Stenin, Natalia Stenina, Alexander Bakanov
The purpose of the work is to increase effi-ciency in the use of dump trucks in open pit mining by improving operational reliability, reducing bounce rates, reducing the length of the vehicle repairing and, as a result, the cost of the final product. The article describes how to improve the reli-ability...

Study Of Sulfur Oxide Reduction During Combustion Of Coal-Water Slurry

Vasiliy Murko, Viktor Karpenok, Yuliy Senchurova, Oleg Tailakov, Veniamin Khyamyalyainen
It is shown that the developed forecast model, based on statistical analysis of the results of the lubricant oil and parameters of mechanical vibrations, allows with 95% confidence probability to predict a moment of the cutting gear breakdown and schedule a timely maintenance.

Catalysts for Nitrogen Oxides Removal from Flue Gases

Nadezhda Shikina, Oleg Tailakov, Zinfer Ismagilov
Main catalytic systems for nitrogen oxides removal from flue gases of thermal power plants by the method of selective catalytic reduction (SCR) with ammonia are reviewed. Mechanisms of the process and catalysts preparation methods are examined; analysis of commercial catalytic systems is performed. Novel...

Methodological Bases of Advanced Geo-ecological Problems Resolving in Neo-industrial Clusters

Maxim Tyulenev, Yury Lesin, Svetlana Vik, Sergey Zhironkin
The importance of geo-ecological studies is confirmed by an insufficient readiness of methodological approaches and conceptual bases of research of geo-ecological factors of innovative development of industrial clusters at the market transformation stage of the Russian economy, the analysis of regularities,...

Prodicing Mesitylene by Dehydrotreatment of C9-aromatics Distilled from Coal Pyrolysis Products

Ivan Petrov, Boris Tryasunov
The paper describes the results of studies on improving nickelia-vanadia-based catalyst for ethyltoluenes dehydrogenation and the features of the process for mesitylene production on its base. This process (dehydrotreatment of C9-aromatics) includes catalytic removal of ethyltoluene impurities from C9...

Environmental Safety Management of a Coal Mining Enterprise

Natalya Golofastova, Vladimir Mikhailov, Tatiana Galanina
The purpose of the study is an analysis of the environmental safety performance at the local level (a coal mining enterprise) and proposals for improvement of the management decision support mechanism aimed at the environmental safety improving. The results of the study of theoretical and applied aspects...

Transformation of the Ecological-economic System of the Coal Mining Region

Vladimir Mikhailov, Natalya Golofastova, Ilya Seredyuk
The evolution and the origin of known systemic ecological-economic interactions, which is especially important in the modern conditions of "technocratic" mode of production characteristic of the coal industry of Kuzbass, are examined in the article. The purpose of the research is to establish the transformation...

Research on Secondary Support Time of Soft Rock Roadway

Wu Duohua, Qiao Weiguo, Song Weijie, Vladimir Pershin
In order to determine accurately secondary support time, the adjustment process of surrounding rock stress and strength in the course of supporting is analyzed based on the support principle of soft rock roadway. Based on the rheological model of soft rock roadway and the corresponding relationship between...

A New Method for Studying the Roadway Stability

Qin Zhongcheng, Wang Shengchao, Yu Xin, Cao Bin
The effect of 5 factors, including roadway width, height, depth, lateral pressure coefficient and comprehensive stress of surrounding rock on the roadway stability by using the method of orthogonal numerical simulation experiment. The experiment results show that all these factors have an effect on the...

Adaptive Technology of Using Backhoes for Full Coal Extraction

Maxim Tyulenev, Alexey Khoreshok, Ekaterina Garina, Sergey Danilov, Sergey Zhironkin
Hydraulic backhoes are widely used in Kuzbass (Western Siberia, Russia) because the level of coal loss during their operation is much lower compared with traditional quarry excavators - shovels. However, one of the mining enterprises' designing problems is insufficient consideration of technological...

Influence of Service Conditions of Quarry Dump Trucks on the Thermal State Large-size Tires

Aleksanadr Kulpin, Dmitriy Stenin, Evgeniy Kultayev, Evdokya Kulpina, Valeriy Borovtsov
Operability of tires depends substantially on their thermal state. High operational temperature of tires worsens mechanical properties of tire materials and reduces their durability. The country average level of large-size and over large-size tires service life considerably decreases because of the tires...

Social Technologies for Management: Opportunities for Coal-mining Enterprises

Olga Zonova, Evgeniya Nekhoda, Ekaterina Slesarenko
The ways of improving the social management technologies, including those for the coal-mining enterprises, in particular the development of the corporate social responsibility, especially in the labor relations system, are proposed in the article. Ignoring the challenges of the contemporary reality,...

Clustering and Emergent Features of the Regional Economics of the Kemerovo Region

Sergey Bereznev, Maria Kumaneeva, Maksim Makin
The subject matter of this research is the processes of clustering in the regional economics. Currently, clustering is the most efficient form of conducting the innovative activity. For industrial regions, such as the Kemerovo region, the benefits of clustering comprise the creation of an efficient production...

Justification of Efficiency of Heavy Dump Trucks Effectiveness in Open pit Mines According to Operating Life Criterion of the Back Axle

Ivan Panachev, Georgiy Shirokolobov, Ilya Kuznetsov, Anastasia Shirokolobova
Open pit mine dump trucks with different carrying capacity transport more than 80% of overburden and coal from open pit mines of Kuzbass. The universal indicators of vehicles operating conditions are: energy intensity which determines energy consumption for minerals transportation and durability which...

Electrophysical Monitoring of the Processes of Electroosmotic Treatment of Soil from Oil Pollution on Laboratory Installations

Evgeniy Shabanov, Sergey Prostov
This article describes methods and results of laboratory simulation of processes in the clay soils contaminated by oily substances in the samples, on the one-dimensional and three-dimensional physical models. It describes the laboratory setup, the procedure for conducting experiments and processing their...

Enhancement of Efficiency of the Magnetic Suspension of Belt Conveyor

Aleksandr Zacharov, Pavel Chepikov
Transportation of large pieces of rock hauled on the belt conveyor causes fatigue wearness of the belt rollers. It has been proposed to upgrade the system of magnetic suspension using alteration of the direction of the magnetization vector of the permanent and levitating magnets in conveyor where there...

The Diagnostics of Motor-Wheel Gears of Quarry Dump Trucks Based on Bearing Wear Monitoring

Andrey Kudrevatykh
The article proposes a method of diagnostics of the actual technical condition of the motor-wheel gear of pit dump trucks. It allows monitoring of the wear of the bearing assemblies, and also to control the parameters of units upon achieving the maximum permissible meanings. Application of this method...

Regarding One Estimation Of The Technical Condition Of The Selective Headers

Vladymir Kovalev, Alexey Khoreshok, Boris Gerike, Anatoliy Meshkov
The paper presents an issue of estimation of the technical condition of the selective headers applying mathematical model of alteration of the actual condition of an object of diagnostics. The paper shows that a complex method is more relevant to the selective headers; the method is based on emission-and-spectrum...

The Development of Gas Energy Potential of Coal Deposits as the Necessary Step Towards the Russian Coal Industry Modernization

Sergey Lazarenko, Georgiy Dubov, Anastasia Shirokolobova
The paper describes the current state of works on the gas component development of the energy potential of coal deposits in Russia. The development of the following technologies is being considered: underground coal gasification; industrial methane extraction from coal deposits; methane extraction of...

Research in the Propping Agent for the Hydraulic Fracturing Cracks for the Methane Extraction from the Massive Coal Seams

Mikhail Baev, Veniamin Khyamyalyaynen
The success of coalbed methane field development is largely determined by the effectiveness of using special gas production stimulation methods. The need of implementing of such methods is driven by features of location and movement of methane in the coal body. The process of hydraulic fracturing as...

Operational Reliability of Corrosion Protection of Structures in Industrialized Region

Yelizaveta Cherkasova, Natalia Zolotuhina, Irina Goryunova, Tatyana Bulanova, Valentina Chenskaya
The importance of corrosion protection in industrialized regions, providing industrial security of enterprises is considered. The technical analysis of metal and concrete structures of industrial enterprises operating in contact with the industrial environment of Kuzbass region shows that the corrosion...