Utilizing Convolutional Autoencoders For Anomaly Detection And Drill Bit Damage Assessment In Rotary Percussion Drilling,
2025
Graduate School of International Resource Sciences, Akita University, 1-1 Tegata Gakuenmachi, Akita 010-8502, Japan
Utilizing Convolutional Autoencoders For Anomaly Detection And Drill Bit Damage Assessment In Rotary Percussion Drilling, Lesego Senjoba, Hajime Ikeda, Hisatoshi Toriya, Tsuyoshi Adachi, Youhei Kawamura
Journal of Sustainable Mining
Monitoring drill bit wear during drilling improves operational efficiency. Wear in drill bits is influenced by factors related to drilling parameters and rock properties and can be categorized into types based on the cause of failure. Several studies have used machine learning to detect drill bit wear, mainly using classification models. However, these models require an extensive amount of data that includes different possible drill bit failures. This presents a challenge as acquiring data is difficult due to the scarcity of anomalies. This study introduces a novel approach utilizing convolutional autoencoders (CAE) for both anomaly detection and drill bit damage …
Prediction And Control Of Ground Vibrations Due To Blasting Activities In Aggregate Mines,
2025
Department of Mining Engineering, IIT (ISM) Dhanbad, Dhanbad 826004, India
Prediction And Control Of Ground Vibrations Due To Blasting Activities In Aggregate Mines, Iddi Ramadhani Bulushi, Geleta Warkisa Deressa, Bhanwar Singh Choudhary
Journal of Sustainable Mining
Predicting and controlling ground vibrations from blasting is crucial for protecting structures and minimizing environmental impacts. This study investigates how explosive quantity and scaled distances affect peak particle velocity and establishes empirical equations to estimate this velocity at different distances from the blast area. The study found that the maximum charge per delay at a peak particle velocity of 10 mm/s was reduced to 13.46% as the delay timing was increased from 0 to 25 ms and 9.99% from 0 to 50 ms delay timing. The reduction of maximum charge with increasing delay timing leads to the reduction of ground …
Viscoelastic Protective Armor Liners And Protective Armor,
2025
Missouri University of Science and Technology
Viscoelastic Protective Armor Liners And Protective Armor, Fatih Dogan, Cody Thomas, Catherine Johnson
Materials Science and Engineering Faculty Research & Creative Works
No abstract provided.
Grnn-Fa Hybrid Model For Predicting The Useful Life Of Dump Truck Tyres,
2025
University of Mines and Technology, Department of Mining Engineering
Grnn-Fa Hybrid Model For Predicting The Useful Life Of Dump Truck Tyres, Festus Kunkyin-Saadaari, Alfred Kesseh, Victor Kwaku Agadzie
Journal of Sustainable Mining
The useful life of dump truck tyres is crucial for optimising economic efficiency and safety in mining operations. This study employs advanced hybrid models, including a generalised regression neural network (GRNN) combined with an artificial bee colony (ABC), ant colony optimisation (ACO), and firefly algorithm (FA), to predict tyre life at Perseus Mining Ghana Limited to enhance prediction accuracy. Sensitivity analysis using simple linear regression (SLR) identified tread depth as the most influential factor, with a correlation coefficient of 0.9638. Among the models, GRNN-FA demonstrated superior performance, achieving the highest correlation coefficient (r = 0.9586) and lowest mean squared error …
Magmatic Volatiles Control The Sub-Plinian Basaltic Eruptions At Ambae Volcano, Vanuatu,
2025
Centre IRD de la Nouvelle-Calédonie
Magmatic Volatiles Control The Sub-Plinian Basaltic Eruptions At Ambae Volcano, Vanuatu, Philipson Bani, Alessandro Aiuppa, Diego Coppola, Simon Carn, Dominique Cluzel, Estelle Rose-Koga, Et Al.
Michigan Tech Publications
The 2017–2018 eruption of Ambae volcano provided a rare opportunity to investigate gas emissions during a sub-Plinian basaltic eruption. Here we document the gas emissions during this eruption using satellite observation, alongside gas measurements and geochemical analyses. Our results indicate that the volcano released 3.3 teragrams of sulfur dioxide, 7.7 of carbon dioxide, 134 of water vapour, 0.2 of hydrogen sulfide, and 0,001 of dihydrogen, ranking Ambae among the world’s top volcanic gas emitters. Despite these substantial emissions, the relatively modest volume of 0.47 cubic kilometer of magma that fueled the eruption indicates a volatile-rich magma source. This enrichment is …
Research On Wireless Monitoring System For Internal Temperature Field Of Coal Gangue Mountain,
2025
Missouri University of Science and Technology
Research On Wireless Monitoring System For Internal Temperature Field Of Coal Gangue Mountain, Xiaofei Liu, Chunhao Liang, Jifa Qian, Xiaolin Li, Xuemei Li, Baoli Li, Guang Xu, Bin Zhou
Mining Engineering Faculty Research & Creative Works
In the long-term accumulation process, coal gangue can lead to severe consequences such as spontaneous combustion and explosions due to external factors. Additionally, the coal gangue that ignites spontaneously significantly pollutes the land and groundwater, causing serious risks to the health and safety of individuals living and working in the vicinity. Therefore, to mitigate the risk of spontaneous combustion resulting from the long-term accumulation of coal gangue, a monitoring system based on LoRa wireless communication technology is proposed to collect and monitor the internal temperature of coal gangue mountains in real time. In the laboratory, active temperature rise monitoring was …
Blast Tube Design: How Shape And Size Influence The Resultant Shock Wave,
2025
Missouri University of Science and Technology
Blast Tube Design: How Shape And Size Influence The Resultant Shock Wave, R. L. Bauer, C. E. Johnson
Mining Engineering Faculty Research & Creative Works
Shock tubes and tunnels are often used in research settings as a way of producing high pressure shock waves in a smaller footprint or without the use of explosives. However, there is no standard geometric design across laboratories. Peak pressure is a significant parameter for characterizing a shock wave. However, different tube configurations could also affect parameters such as impulse and duration, yet no research has investigated how the scale of the tube affects the overall waveform shape. To understand the implications of shock tube design, tubes with a constant length to diameter ratio were evaluated to determine how tube …
Study On Ratio Of Cutting Height To Caving Height For Efficient Top-Coal Recovery In Extra Thick And Gently Inclined Coal Seam – A Case Study Of Seam 7 Ha Lam Coal Mine, Vietnam,
2025
Faculty of Mining, Hanoi University of Mining and Geology, Vietnam,
Study On Ratio Of Cutting Height To Caving Height For Efficient Top-Coal Recovery In Extra Thick And Gently Inclined Coal Seam – A Case Study Of Seam 7 Ha Lam Coal Mine, Vietnam, Duc Hung Pham, Tien Dung Le, Phi Hung Nguyen, Van Quan Pham
Journal of Sustainable Mining
The mechanized longwall top-coal caving technology (LTCC) has been used in Quang Ninh underground coal mines owned by Vietnam National Coal – Mineral Industries Holding Corporation Limited (Vinacomin). The application of the LTCC technology has achieved significant achievements, contributing to the production of coal for national economy development. The use of LTCC has shown that the top-coal recovery efficiency is directly affected by the sequence of top coal drawing, ratio of cutting height to caving height, and caving span. These parameters, especially for extracting thick and gently inclined coal seam conditions as in the Quang Ninh coal field, have not …
Electrochemical Insights Into The Direct Dissolution Of Impure Sphalerites And Their Partial Oxidation In An Acidic Environment,
2025
Missouri University of Science and Technology
Electrochemical Insights Into The Direct Dissolution Of Impure Sphalerites And Their Partial Oxidation In An Acidic Environment, Gholamreza Khodadadmahmoudi, Saeid Karimi, Hadi Abdollahi, Milad Karimi, Ali Rezaei, Lana Alagha
Mining Engineering Faculty Research & Creative Works
This study examined the electro dissolution mechanism of five impure sphalerite samples, which differ significantly in purity levels, along with their partially oxidized counterparts in a 0.5 M H2SO4. Partially oxidized samples were prepared through an incomplete leaching of sphalerite using H2SO4 with Fe2(SO4)3.H2O as an oxidizing agent. The original sphalerite samples and the partially oxidized samples were referred to as SP and POS samples, respectively. Analyses using XRD, SEM, Raman spectroscopy, and electrochemical techniques suggested presence of elemental sulfur and a metal-deficient layer on …
A Bayesian Network For Business Uncertainties In Coal Mining Industry,
2025
Interdisciplinary School of Management and Technology, Institut Teknologi Sepuluh Nopember, Indonesia
A Bayesian Network For Business Uncertainties In Coal Mining Industry, Firman Risqul Fidry, Iwan Vanany, Jerry Dwi Trijoyo Purnomo
Journal of Sustainable Mining
In recent years, business uncertainty in the coal mining industry has increased along with increasing global energy demand and carbon emission reduction policies. Not much research has been done on business uncertainty in the coal mining industry based on modelling. This study aimed to develop a model for business uncertainty in the coal mining industry using a Bayesian network approach. The Indonesian coal mining industry was utilized as a case study to develop the proposed model. Two dimensions and nine factors were identified and structured based on a literature review and rigorous interviews with three interviewees from three companies. Each …
Eco-Efficiency And Life Cycle Assessment Of The Long Reach Directionally Drilled And Cross-Measure Boreholes Methane Drainage Technologies Employed In Bituminous Coal Mine On The Basis Of The Pilot Scale Experimental Data,
2025
Central Mining Institute – National Research Institute, Department of Mining Aerology, Poland,
Eco-Efficiency And Life Cycle Assessment Of The Long Reach Directionally Drilled And Cross-Measure Boreholes Methane Drainage Technologies Employed In Bituminous Coal Mine On The Basis Of The Pilot Scale Experimental Data, Bartłomiej Jura, Piotr Krawczyk, Anna Śliwińska, Jacek Skiba, Marcin Karbownik, Natalia Howaniec
Journal of Sustainable Mining
This paper presents the results of eco-efficiency and life cycle analysis conducted for two methane drainage technologies: cross-measure (CM) and long reach directionally drilled (LRDD) boreholes. In the analyses, data from coal mine methane drainage of two coal panels, I-C and II-C, located at the Staszic-Wujek coal mine in Poland, were used. The results of the life cycle and eco-efficiency assessments showed that employment of long reach directional drilling boreholes method has a lower environmental impact and is more eco-efficient, causing the lower environmental impact and lower construction and operating costs per cubic meter of methane extracted. The results of …
Acknowledgement Of Reviewers,
2025
Central Mining Institute
Coal Mining-Induced Composite Damage To Geological Bodies And Geological Guarantee Against Damage Reduction,
2025
Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi’an University of Science and Technology, Xi’an 710054, China; Geological Research Institute for Coal Green Mining, Xi’an University of Science and Technology, Xi’an 710054, China; College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China
Coal Mining-Induced Composite Damage To Geological Bodies And Geological Guarantee Against Damage Reduction, Wang Shuangming, Sun Qiang, Hu Xin, Geng Jishi, Hou Enke, Wang Shengquan, Zhou Shutao, Shi Qingmin, Yuan Shihao, Chen Kai, Song Shijie
Coal Geology & Exploration
Objective and Background Coals have long served as a predominant energy source in China. With an increase in mining scale and intensity in recent years, the correlations between rocks, soils, hydrosphere, and ecological environment in coal mining areas have been strengthened. Given this, there is an urgent need to, from the perspective of Earth system science, understand the coupling relationships and chain characteristics among factors including the movement and deformations of surrounding rocks, rock bursts, coal and gas outbursts, water inrushes, ground subsidence, water and soil erosion, and damage to ecological environments, aiming to achieve safe, green coal mining. Methods …
Fracture-Seepage Characteristic Zones Of The Overburden Of Extra-Thick Coal Seams: Evolutionary Patterns And Their Engineering Applications,
2025
College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Key Laboratory of Western Mine Exploitation and Hazard Prevention, Ministry of Education, Xi’an University of Science and Technology, Xi’an 710054, China
Fracture-Seepage Characteristic Zones Of The Overburden Of Extra-Thick Coal Seams: Evolutionary Patterns And Their Engineering Applications, Kong Xiangguo, Zhao Tianshuo, Lin Haifei, Zhao Pengxiang, Wang Xu, Cai Yuchu, Ji Pengfei, He Di, Li Ke, Xu Chuanyu
Coal Geology & Exploration
Objective and Methods Given that the overburden’s structure significantly influences pressure relief gas extraction, this study aims to explore the gas migration patterns of the overburden of thick coal seams during coal seam mining. To this end, this study analyzed the evolutionary patterns of the fracture morphology and seepage capacity of the overburden using physical similarity simulation experiments. Accordingly, this study investigated the mechanisms behind the evolution of fracture-seepage characteristic zones of the overburden of extra-thick coal seams and proposed a method for identifying fracture-seepage characteristic zones of the overburden. Using this method, this study conducted gas extraction along the …
Experimental Study Of The Piezoelectricity Of Middle Pleistocene Loess In The Weibei Region, China,
2025
School of Intelligent Science and Engineering, Xi’an Peihua University, Xi’an 710125, China; School of Civil Engineering, Chang’an University, Xi’an 710061, China
Experimental Study Of The Piezoelectricity Of Middle Pleistocene Loess In The Weibei Region, China, Jing Yanlin, Liu Jie, Liu Qingying, Duan Xiaoxiao, Xie Na, Yang Dengke
Coal Geology & Exploration
Objective Quartz, the piezoelectric material discovered the earliest, has found widespread applications in industry, military fields, and daily life due to its piezoelectricity. The widely distributed loess worldwide is composed primarily of quartz, accounting for 37.0% to 69.9%. However, there is a lack of studies on the piezoelectricity of loess both domestically and internationally. Methods This study investigated the ${\mathrm{Q}}_2^{{\mathrm{eol}}} $ loess from the Weibei Loess Tableland in Shaanxi Province as an example to explore the piezoelectricity of loess. The piezoelectric coefficient of the loess was measured, and its piezoelectric voltage under the action of static loading and vibration was …
Deformations And Seepage-Induced Erosion Of Fractured Rocks In Fault Under Confined Settings,
2025
Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China; College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China
Deformations And Seepage-Induced Erosion Of Fractured Rocks In Fault Under Confined Settings, Sun Wenbin, Tian Dianjin, Ma Cheng, Xue Yanchao, Yang Can, Zhu Kaipeng
Coal Geology & Exploration
Objective Most of the mining areas in China have entered the deep mining stage. In this case, the risks of mine water inrushes increase significantly due to the complex deep hydrogeological conditions, a significant increase in the number of hidden disaster-causing factors, and the existence of faults. Methods Using a deformation-seepage experiment system for fractured rocks, this study investigated the characteristics of compressive deformations and seepage-induced erosion of fractured rocks in faults. By analyzing the impacts of particle-size distribution combinations, saturation state, and seepage pressure, on the deformation-permeability characteristics of fractured rocks under confined axial compression, this study investigated the …
An Intelligent Lithology Identification Method For Sandstone And Mudstone Strata And Its Applications: A Case Study Of The Jurassic Strata In The Lunnan Area, Xinjiang, China,
2025
Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China; College of Geophysics and Petroleum Resources, Yangtze University, Wuhan 430100, China
An Intelligent Lithology Identification Method For Sandstone And Mudstone Strata And Its Applications: A Case Study Of The Jurassic Strata In The Lunnan Area, Xinjiang, China, Cai Ming, Zhou Qingwen, Yang Cong, Chen Feng, Wu Dong, Lin Wang, Zhang Chengguang, Zhang Yuanjun, Miao Yuxin
Coal Geology & Exploration
Objective Lithology identification lays the foundation for fine-scale reservoir evaluation. However, traditional identification methods generally utilize the interactive relationships between only 2‒3 logging parameters, suffering from low utilization rates of logging information and low identification accuracy for strata with small differences in logging responses. This seriously restricts the effects of old well reexamination. The efficient, intelligent CatBoost classification algorithm can fully mine the correlations between multi-source logging information and lithology. Methods This study investigated the Jurassic sandstone and mudstone reservoirs in the Lunnan area, Xinjiang, China. Using five logging parameters determined through sensitivity analysis, i.e., natural gamma-ray value, spontaneous potential, …
A Dehazing And Enhancement Algorithm For Heterogeneous Images Of Underground Mining Environments In Coal Mines,
2025
College of Mechanical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Key Laboratory of Mine Electromechanical Equipment Intelligent Monitoring, Xi’an 710054, China
A Dehazing And Enhancement Algorithm For Heterogeneous Images Of Underground Mining Environments In Coal Mines, Zhang Xuhui, Xie Yanbin, Yang Wenjuan, Zhang Chao, Wan Jicheng, Dong Zheng, Wang Yanqun, Jiang Jie, Li Long
Coal Geology & Exploration
Objective In coal mines, the uneven distribution of dust haze and complex illumination conditions caused by underground coal mining and dust removal lead to blurred video images, as well as the loss of information and details. Hence, this study proposed a dehazing and enhancement algorithm for heterogeneous images of underground mining environments. Methods Initially, hazy images were segmented into zones with different brightness values, for which the average ambient light intensity of global dark channels was calculated. The calculation results were integrated through weighting with the ambient light of local bright channels, which was obtained using adaptive gamma correction and …
An Analytical Method For The Desorption Superposition Effect In Commingled Production Of Coalbed Methane And Its Application: A Case Study Of The Xiaotun Mine Field In Western Guizhou Province, China,
2025
College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China; Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi’an 710054, China; Geological Research Institute for Coal Green Mining, Xi’an University of Science and Technology, Xi’an 710054, China
An Analytical Method For The Desorption Superposition Effect In Commingled Production Of Coalbed Methane And Its Application: A Case Study Of The Xiaotun Mine Field In Western Guizhou Province, China, Guo Chen, Ji Yan, Zhao Chenyi, Lu Lingling, Yu Xinhang, Gao Junzhe, Li Houqiang, Zhang Xuyang, Wang Xiang, He Hongbin, Zhang Runhan
Coal Geology & Exploration
Objective The commingled production of coalbed methane (CBM) serves as a significant means to increase single-well production. However, production practices reveal that the commingled production of CBM exhibits complex and varied effects and controlling factors, facing technical challenges of identifying gas-producing contributions, predicting gas-producing potential, and optimizing pay interval combinations. The superposition of desorption for gas production among different coal seams determines whether high CBM production can be achieved using commingled production. Methods This study proposed an analytical method for the desorption superposition effect in the commingled production of CBM, involving determining desorption sequences, analyzing the superposition of desorption intervals …
Optical-Electrical-Acoustic Wave Multiparameter Response Characteristics Of Typical Rocks In Coal-Bearing Strata Throughout The Loading Process,
2025
State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Anhui University of Science & Technology, Huainan 232001, China; School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China
Optical-Electrical-Acoustic Wave Multiparameter Response Characteristics Of Typical Rocks In Coal-Bearing Strata Throughout The Loading Process, Zhang Pingsong, Liu Chang
Coal Geology & Exploration
Objective The deformations and rupture of rocks under loading will cause potential changes in parameters. Dynamic parameter capture assists in characterizing the generation, propagation, and closure processes of fractures, serving as a significant method for assessing rock quality. Methods Using a multiparameter test system, this study synchronously acquired strain measured using distributed optic fibers, electrode current, and compressional wave (P-wave) velocities of rock specimens under uniaxial loading. Accordingly, this study determined strength vs. parameter characteristic relationship graphs and parametric tomography results, finely describing the multiparameter spatiotemporal evolutionary characteristics of three typical rocks (i.e., sandstone, limestone, and mudstone) throughout the loading …
