COAL QUALITY CONTROL IN THE CONTEXT OF
describe the results of coal product quality planning with using the QFD methodology, present a model of coal quality control through the coal product life cycle Quality of ROM coal depends not only in-situ quality of coal but also the mining method applied, i.e., dilution of top coal during caving is of major importance. Geostatistical coal quality control in longwall mining
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Safety Technology Risks and Countermeasures in the
In the past 10 years, the coal industry has made a number of key breakthroughs in the innovation and R & D of intelligent mining technology, and mining Coal Quality Control in Mining Complex-Structure Deposits Authors: E. A. Khoyutanov V. L. Gavrilov Abstract The expediency of allowance for the links in the Coal Quality Control in Mining Complex-Structure Deposits
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Multi-dimensional safety risk assessment on coal mines
In order to study the safety risk situation of coal mines under difficult conditions, this paper screens 98 factor indexes including multiple subjects such as Metrics Abstract The contradiction between the exploitation of coal resources and the protection of the ecological environment in western China is becoming Evaluation of eco-environmental quality for the coal-mining
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MINERAL MINING TECHNOLOGY Coal Quality Control in
The quality control system at the Urtui open pit lignite mine includes: production planning using quality charts; operational radiation and hygienic control of The history of the Indian coal-mining industry is traced back to both the preindependence and postindependence period in order to show how the industry has progressed to the present day. Different aspects of mining are considered: selective mining, special mining methods, highwall mining, coal preparation through deshaling, and quality control.Management of Coking Coal Resources ScienceDirect
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The impacts of mining on soil pollution with metal(loid)s in
Due to frequent small-scale illegal mining in Nalaikh 7, such coal without quality control may be often utilised in ger areas, dispersing more contaminated ash and increasing pollution.Coal mining subsidence (CMS) can severely damage soil quality. The relationships among the variables influencing soil quality are complex and variable in time and space. This study characterized the changes of, and interrelationships among, soil quality variables in the 0–60-cm soil layer on a CMS slope applied complex network Evolution of soil quality on a subsidence slope in a coal mining
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(PDF) Coal Quality Control with Control Charts ResearchGate
The control charts have mostly indicated that the variations in the properties of coal are significantly high. The considerable amount of off-design coal relative to coal contract specificationsA certified standard of iron-ore was used for assessing precision of analytical method used in a studied laboratory. Certified characteristics of the standard sample are as follows: 60.73 % Fe ( μ) certified mean of the standard; 0.09 % Fe ( σ C) certified within-laboratory standard deviation of the standard.Quality Control and Assurance (QAQC) SpringerLink
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Investigating the environmental impacts of coal mining
China is the largest producer and consumer of coal in the world. The extraction of coal is increasing intensively to meet the needs of the ever-increasing population and industries. However, coal mining has resulted in environmental changes, including deforestation, air, water, soil, and landform deterioration. This study Technologies should be researched and developed for fine heavy-medium separation of coal, high-efficiency dry coal preparation, coal product quality monitoring and intelligent control of the coal preparation process, modular washing with a capacity of 10 million tons per year, and the comprehensive utilization of coal slime in mining areas.The view of technological innovation in coal industry under
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Experimental Study on Prevention and Control of Ground Fissures in Coal
The purpose of this study was to explore the effective prevention and control method of ground fissures in plain coal mining subsidence. Firstly, the model experiment was carried out, and then two typical working faces, working face A (WFA) and working face B (WFB), in the Huaibei plain mining area were selected for the case study The results showed that the change in the water and soil environment caused by coal mining subsidence was the main factor affecting the quality of the ecological environment in the subsidence area; the evaluation results in the control area and uniform subsidence area were of grade III, which was at the “general” level, and the evaluationComprehensive Evaluation of Ecological Environmental Quality
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A New Method of Regional Mining Subsidence Control for
Coordinated and sustainable development of production-living-ecological space (PLES) is directly related to the global energy security and quality of life in coal areas. However, the current surface subsidence control methods have some problems, such as low resource recovery rate, high cost, insufficient materials, which are difficult to meet the As the core of artificial intelligence, machine learning has strong application advantages in multi-criteria intelligent evaluation and decision-making. The level of sustainable development is of great significance to the safety evaluation of coal mining enterprises. BP neural network is a classical algorithm model in machine learning. In this Coal Mine Safety Evaluation Based on Machine Learning: A
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Multi-dimensional safety risk assessment on coal mines
The existing 7 state-owned coal mines (belonging to the same group company) have an average production capacity of 387,000 tons/year (only 1 has a mechanized coal mining face, no mechanizedThe quality of blocking, used for transmitting load from blocks to steel arches, affects the performance of steel sets. Zhang J-x, Huang P, Zhang Q, Li M, Chen Z-w (2017) Stability and control of room mining coal pillars—taking room mining coal pillars of solid backfill recovery as an example. J Cent South Univ 24(5):1121–1132.Coal mining trends, approaches, and safety hazards: a brief
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Influence of geological factors on coal permeability in the Sihe coal
Permeability of coal reservoirs influence the extraction of coal gas from coal seams. Twelve coal samples were collected at an anticline and a syncline of the No. 3 coal seam in the Sihe coal mine. Porosity, permeability, pore size, vitrinite reflectance, and liquid nitrogen adsorption of the samples were evaluated. Structural curvatures at the DOI: 10.1016/j.cageo.2021.104862 Corpus ID: 237425372; Quality control of microseismic P-phase arrival picks in coal mine based on machine learning @article{Zhu2021QualityCO, title={Quality control of microseismic P-phase arrival picks in coal mine based on machine learning}, author={Mengbo Zhu and Jianyuan Cheng and Zhengxia Zhang}, Quality control of microseismic P-phase arrival picks in coal
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Monitoring of Land Cover and Vegetation Changes in Juhugeng Coal Mining
Coal is the most prevalent energy source in China and plays an important role in ensuring energy security. The continuous monitoring of coal mining activities is helpful to clarify the incremental space of coal production and establish a rational framework for future coal production capacity. In this study, a multi-source remote sensing approach To control the problem of coal wall spalling in large mining height working faces subject to mining, considering the Duanwang Mine 150505 fully mechanized working face, the mechanism of coal wall spalling in working faces was investigated by theoretical analysis, numerical simulation and field experiment.Mining Safety and Sustainability MDPI
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Fundamentals of modern ground control management in
Australia’s coal mining safety record outperforms that of the U.S., China and other major coal mining countries, with the fatal risks associated with strata failure typically well managed [2]. Large ground control failures resulting in unplanned delays to production and lost revenues do still occur relatively frequently but are often onlyThe impact of coal mining subsidence on surface ecology involves the influence of several ecological elements such as water, soil, and vegetation, which is systematic and complex. Given the unclear understanding of the synergistic change patterns of the water–soil–vegetation ecological elements in the influence of coal mining in the west, this Effects of Underground Coal Mining on Soil Spatial Water
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Analysis on the Characteristics of Water Pollution Caused by
Coal is the primary source of energy in China’s energy structure system. With the large-scale mining of mineral resources, a large amount of mine water will be produced in the process of development, construction, and production, which will pollute and damage the ecological environment of mine water. At present, China vigorously
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