Topic Editors

School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Prof. Dr. Xinmin Wang
School of Resources and Safety Engineering, Central South University, Changsha 410083, China

New Advances in Mining Technology

Abstract submission deadline
20 July 2024
Manuscript submission deadline
20 September 2024
Viewed by
4908

Topic Information

Dear Colleagues,

The mining industry plays a vital role in the global economy. Today, more than 92% of the world's primary energy, 80% of industrial raw materials, and 70% of agricultural production means are derived from mineral resources. This Topic aims to highlight the current state of knowledge on the new advancements in mining technology, including case studies of specific mining projects and the development of new technologies and practices. This Topic will cover a range of topics related to mining technology including, but not limited to, new mining equipment, mining materials, and safety technologies, as well as social and economic impacts. By highlighting the development of new mining technologies and practices, this Topic hopes to contribute to a more sustainable and responsible mining industry.

Potential topics include, but are not limited to, the following:

  • Automated and intelligent mining equipment;
  • Mining technology of complex and difficult mining body;
  • New low-cost mineral materials;
  • New technology of mining safety management;
  • Mining waste management and remediation;
  • Social and economic impacts of mining industry;
  • Sustainable mining practices and environmental regulations;
  • Case studies of successful modern green mines.

Dr. Shuai Li
Prof. Dr. Xinmin Wang
Topic Editors

Keywords

  • intelligent mining equipment
  • new mining technology
  • new mining materials, mining safety technology
  • mining waste management
  • sustainable mining practices
  • modern green mines

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Applied Sciences
applsci
2.7 4.5 2011 16.9 Days CHF 2400 Submit
Energies
energies
3.2 5.5 2008 16.1 Days CHF 2600 Submit
Materials
materials
3.4 5.2 2008 13.9 Days CHF 2600 Submit
Minerals
minerals
2.5 3.9 2011 18.7 Days CHF 2400 Submit
Processes
processes
3.5 4.7 2013 13.7 Days CHF 2400 Submit
Resources
resources
3.3 7.7 2012 23.8 Days CHF 1600 Submit

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Published Papers (7 papers)

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19 pages, 8627 KiB  
Article
Permeability Effect and Nonlinear Coupling Characteristics of Rock–Soil Interaction with Water
by Ning Liang and Ziyun Wang
Processes 2024, 12(4), 828; https://doi.org/10.3390/pr12040828 - 19 Apr 2024
Viewed by 397
Abstract
The seepage effect of rock and soil in the process of encountering water follows a nonlinear coupling law between water and rock. According to the permeability of rock and soil during softening with water, changes in particles in rock and soil are related [...] Read more.
The seepage effect of rock and soil in the process of encountering water follows a nonlinear coupling law between water and rock. According to the permeability of rock and soil during softening with water, changes in particles in rock and soil are related to permeability mechanisms. Based on the assumption of connection between particles in rock and soil, changes in particles before and after water infiltration, the mechanism of water–rock interaction, and the damage to rock and soil are analyzed herein. Combined with fractal theory and percolation theory, the random failure characteristics and nonlinear behavior of water in rock and soil are studied. At the same time, with the help of Fluent 17.0 software, the seepage process of rock samples in water is numerically simulated and analyzed. Taking the permeability coefficient of rock samples, the mass flow rate of water, and the internal pore water pressure of rock samples as tracking objects, it is found that there are obvious nonlinear characteristics in the process of water–rock interaction. The seepage–stress coupling between water and rock forms negative resistance to water seepage. The water infiltration is a slow and then accelerated process and tends to be stable. Research has shown that the coupling effect of seepage between water and rock increases the damage inside the rock and soil, and its permeability fluctuates randomly at different time steps. This feature is a common manifestation of fractal properties and percolation within rock and soil particles. At the same time, there is a non-equilibrium variation law of pore water pressure inside the rock and soil. This leads to a continuous strengthening of the seepage effect, reaching a stable state. The results of this study are crucial. It not only reveals the mechanism of interaction between water and rock but also correlates the degree of internal damage in rock and soil based on the seepage characteristics between water and rock. The conclusions can provide some reference value for relevant construction methods in the analysis of the formation of water flow characteristics, the prevention of rock slope seepage disasters, and the control of water inrush in tunnel excavation. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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12 pages, 3091 KiB  
Article
Design of Unmanned Road Widths in Open-Pit Mines Based on Offset Reaction Times
by Liu Han and Peng Liu
Appl. Sci. 2024, 14(7), 2995; https://doi.org/10.3390/app14072995 - 2 Apr 2024
Viewed by 514
Abstract
In an effort to enhance the efficiency and safety of open-pit mines, this study explores the optimization of end slope road parameters and slope structures, specifically focusing on unmanned driving lanes. A significant aspect of the study is the development of a truck [...] Read more.
In an effort to enhance the efficiency and safety of open-pit mines, this study explores the optimization of end slope road parameters and slope structures, specifically focusing on unmanned driving lanes. A significant aspect of the study is the development of a truck trajectory offset model, which considers the different reaction times between automated sensors and human drivers in adapting to environmental changes. To test these concepts, the study uses numerical simulations to confirm the stability of the proposed end slope designs. Using Victory West Mine No. 1 as a case study, the research determines the optimized width for unmanned driving lanes and the maximum angle for the safe steepening of end slopes. The findings indicate that the optimized unmanned lane width for NTE240 mining dump trucks is 1743 mm, allowing for a 2-degree increase in the slope angle at the south end slope. This optimization leads to a steep mining stripping volume of 3.2735 million m3 and a coal output of 2.49628 million tons, maintaining a stripping ratio of 1.31 m3/t. These results demonstrate that unmanned driving road width optimization not only ensures slope safety but also significantly boosts the economic benefits of steep mining in open-pit mines. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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25 pages, 9964 KiB  
Article
Feasibility Study of Material Deformation and Similarity of Spatial Characteristics of Standard Coal Rocks
by Gang Liu, Dongwei Wang, Yonglong Zan, Shengxuan Wang and Qiqi Zhang
Processes 2024, 12(3), 454; https://doi.org/10.3390/pr12030454 - 23 Feb 2024
Viewed by 582
Abstract
The comparison between similar materials and original coal rock is the basis for similar simulation experiments in coal mines. The differences in mechanical properties, acoustic characteristics, and damage laws between similar materials and the original coal rock are of great significance for similar [...] Read more.
The comparison between similar materials and original coal rock is the basis for similar simulation experiments in coal mines. The differences in mechanical properties, acoustic characteristics, and damage laws between similar materials and the original coal rock are of great significance for similar simulation research, to reveal objective laws. First, materials similar to coal rock with similar theoretical ratios were taken as the object of research, and the sand–cement ratio, the carbon paste ratio, and the water content were determined by multivariate linear regression to accurately match the ratios. Second, by using acoustic emission and digital scattering technology to explore the acoustic law, deformation characteristics, and spatial feature similarities of the materials similar to coal rock, the acoustic emission evolution law of the original rock was found to be the same as that of the similar materials. Digital scattering was able to describe the localization of strain in the similar materials, and the correlation between the overall deformation and the local deformation was explored. This indicates that materials similar to coal rock can effectively simulate the deformation of actual coal rocks. Lastly, these materials were found to allow effectively simulating the deformation characteristics and spatial properties of actual coal rock, which provides an important experimental means and method for similar research in the field of coal rock engineering. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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20 pages, 14650 KiB  
Article
Fractal Evolution Characteristics of Isolation Layers in a Submarine Gold Mine: A Case Study
by Yin Chen, Zijun Li, Weixing Lin, Yan He, Guoqiang Wang, Renze Ou and Qi Liu
Minerals 2024, 14(2), 205; https://doi.org/10.3390/min14020205 - 17 Feb 2024
Viewed by 580
Abstract
The establishment of an isolation layer in submarine mining has been a persistent challenge. In the context of this research, we conducted a similarity simulation test to preliminarily assess the interaction between the thickness and extent of the isolation layer. Subsequently, we introduce [...] Read more.
The establishment of an isolation layer in submarine mining has been a persistent challenge. In the context of this research, we conducted a similarity simulation test to preliminarily assess the interaction between the thickness and extent of the isolation layer. Subsequently, we introduce an innovative approach that integrates fractal theory and the Bonded Block Model (BBM) to simulate undersea isolation layer mining. The validation of this method relies on on-site borehole scanning and displacement monitoring, which depict the intricate fractal evolution of fractures and predict the optimal thickness of the isolation layer. Our findings affirm the robustness and validity of this method. Evaluation of the fractal dimensions of fractures reveals that a critical threshold of 1.7 is essential to prevent structural failure of the isolation layer, while a limit of 1.5 is necessary to avoid significant water ingress. Remarkably, the correlation dimension of the settlement time series closely aligns with the fractal dimension of the fractures, underscoring the feasibility of ensuring the safety of isolation layer mining through real-time settlement monitoring. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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16 pages, 5365 KiB  
Article
Dimensionless Analysis of the Spatial–Temporal Coupling Characteristics of the Surrounding Rock Temperature Field in High Geothermal Roadway Realized by Gauss–Newton Iteration Method
by Jiale Zhou, Yuan Zhang, Peng Shi and Yang Liu
Appl. Sci. 2024, 14(4), 1608; https://doi.org/10.3390/app14041608 - 17 Feb 2024
Viewed by 409
Abstract
Understanding the time–space coupling characteristics of the surrounding rock temperature field in high geothermal roadways is essential for controlling heat damage in mines. However, current research primarily focuses on individually analyzing the temperature changes in the surrounding rock of roadways, either over time [...] Read more.
Understanding the time–space coupling characteristics of the surrounding rock temperature field in high geothermal roadways is essential for controlling heat damage in mines. However, current research primarily focuses on individually analyzing the temperature changes in the surrounding rock of roadways, either over time or space. Therefore, the Gauss–Newton iteration method is employed to model the coupling relationship between temperature, time, and space. The results demonstrate that the dual coupling function describing the temperature field of the surrounding rock in both time and space provides a more comprehensive characterization of the temperature variations. Over time, as ventilation duration increases, the fitting degree of the characteristic curve steadily rises, and the characteristic curve descends overall. In the spatial dimension, the fitting degree of the characteristic curve gradually decreases with the rise of the dimensionless radius, and the characteristic curve ascends overall. Additionally, as thermal conductivity increases, the fitting degree of the characteristic curve steadily rises. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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0 pages, 4776 KiB  
Article
Simulation Study on Dynamic Characteristics of the Chain Drive System for Mining Scraper Conveyor Driven by the Permanent Magnet Synchronous Motor
by Xi Zhang, Mingming Ren, Hongju Wang and Lei Jin
Processes 2024, 12(1), 165; https://doi.org/10.3390/pr12010165 - 10 Jan 2024
Viewed by 916
Abstract
The chain drive system represents a critical subsystem within the scraper conveyor. This paper proposes a joint simulation model for the drive system of the scraper conveyor, driven by the permanent magnet synchronous motor, in order to conduct a comprehensive analysis of the [...] Read more.
The chain drive system represents a critical subsystem within the scraper conveyor. This paper proposes a joint simulation model for the drive system of the scraper conveyor, driven by the permanent magnet synchronous motor, in order to conduct a comprehensive analysis of the dynamic characteristics of the chain drive system during the operational process. Firstly, the dynamic simulation model for the mining scraper conveyor’s chain drive system was established in ADAMS, taking into account its structural characteristics. Then, the mathematical model of the permanent magnet synchronous motor was established using the coordinate transformation theory, and the speed controller based on vector control was designed by using the theory related to sliding mode control. The coupling relationship between the chain drive system of the scraper conveyor and the permanent magnet synchronous motor drive system was investigated. Finally, a joint simulation model of the mechanical system and motor control system was created using ADAMS (View 2019) and MATLAB/Simulink (2020a). The dynamic characteristics of the chain drive system were analyzed, and the three typical working conditions of no load, half load, and rated load were considered. The results show that the contact force between the flat ring and the sprocket undergoes an initial increase, followed by a decrease, and finally another increase. As the load increases from no load to full load, there is a marked increase in the contact force between the loaded side chainrings. Due to the polygon effect, both the speed curve of the permanent magnet drive motor and the contact force curve between the ring chains exhibit periodic fluctuations. The research in this paper provides an idea for the coupling analysis of the scraper conveyor electromechanical system. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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14 pages, 1962 KiB  
Article
Energy Accumulation Law of Different Forms of Coal–Rock Combinations
by Zibo Li, Guohua Zhang, Yubo Li, Wenjun Zhou, Tao Qin, Li Zeng and Gang Liu
Appl. Sci. 2023, 13(20), 11393; https://doi.org/10.3390/app132011393 - 17 Oct 2023
Viewed by 629
Abstract
Coal–rock disasters are becoming more and more severe as the intensity of coal mining increases. Due to its destructive power and resulting extensive area damage, rock burst is among the most critical threats to coal mine safety. It results from the combined action [...] Read more.
Coal–rock disasters are becoming more and more severe as the intensity of coal mining increases. Due to its destructive power and resulting extensive area damage, rock burst is among the most critical threats to coal mine safety. It results from the combined action of the coal and the rock when affected by the mining process. To this end, we used a combination of coal and rock to conduct our studies. Combining a uniaxial compression experiment with theoretical analysis, this work investigated how different lithologies and coal–rock height ratios affect the mechanical properties of this combination and the law governing energy accumulation. We determined the following: When the coal–rock height ratios are dissimilar, the peak strength and modulus of elasticity of the combination show a negative correlation with the coal thickness share, and the pre-peak energy accumulation and impact energy index of the combination is positively correlated with the coal thickness percentage. In combination with the same coal–rock height ratio, the peak strength, elastic modulus, pre-peak energy accumulation, and impact energy index all increase with increased rock strength and elastic modulus. The presence of a hard rock layer affects the accumulation of pre-peak energy. Based on the experimental analysis, a theoretical model was established, and the surrounding rock stress negatively correlates with the percentage of coal thickness; the energy stored in the surrounding rock is directly proportional to the coal in the zone. Therefore, we inferred that the stress distribution of the surrounding rock as coal thickness changes is abnormal; substantial energy accumulation can swiftly initiate dynamic disasters, such as rock bursts. This study has important reference significance for preventing and controlling rock bursts in areas where coal thickness changes. Full article
(This article belongs to the Topic New Advances in Mining Technology)
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