Electroactive Pvdf/Ti3c2tx Mxene Functionalized Nanofiber Mats With High Surface Potential For High-Efficiency Indoor & Outdoor Submicron Pm(0.3-2)Μm Filtration,
2026
Missouri University of Science and Technology
Electroactive Pvdf/Ti3c2tx Mxene Functionalized Nanofiber Mats With High Surface Potential For High-Efficiency Indoor & Outdoor Submicron Pm(0.3-2)Μm Filtration, Ashish Kakoria, Mirza Muhammad Zaid, Aamir Iqbal, Mahsa Moradi, Lina Zheng, Guang Xu
Mining Engineering Faculty Research & Creative Works
Fine PM0.3-2.0 rapidly penetrates the respiratory system and causes health problems. Commercial filters remove 0.3 μm particles at ∼95 % efficiency but impose high pressure drops that make breathing difficult. We fabricate a novel electrospun PVDF-Ti3C2Tx nanofiber mat for PM0.3–2.0 filtration. Where a high electric field stretched PVDF and PVDF-Ti3C2Tx solutions into ultrafine fibers that were collected as porous nanofibrous mats. PVDF was chosen for its electroactive behavior and high dielectric constant, enabling efficient electrostatic filtration. The incorporation of Ti3C2Tx MXene enhances surface charge density and interfacial polarization, …
An Adaptive Immersive Training Framework For Miner Self-Escape Readiness In Underground Mining Emergencies,
2026
Missouri University of Science and Technology
An Adaptive Immersive Training Framework For Miner Self-Escape Readiness In Underground Mining Emergencies, Muhammad Azeem Raza, Samuel Frimpong, Saima Ghazal
Mining Engineering Faculty Research & Creative Works
Underground mining environments are complex and hazardous operations where emergencies continue to happen. Underground mine emergencies require rapid, high-stakes decision-making under conditions of uncertainty, stress, and limited visibility. Conventional mine emergency training largely relies on instruction-based approaches which provide insufficient exposure to the cognitive and behavioral demands of real underground emergency situations. There has been an identified need to train miners for knowledge, skills, abilities, and other characteristics (KSAOs). This study proposes an Adaptive Immersive Training Framework (AITF), a cognitively grounded architecture that integrates cognitive task analysis (CTA), KSAOs, and situational awareness assessment for miner self-escape training and readiness. The …
Remote Sensing Of Dynamic Ground Motion Via A Moiré-Based Apparatus,
2026
Michigan Technological University
Remote Sensing Of Dynamic Ground Motion Via A Moiré-Based Apparatus, Adrian Ali Moazzam, Nontawat Srisapan, Gregory Waite, Durdu Guney, Roohollah Askari
Michigan Tech Publications
Highlights: What are the main findings? A Moiré-based optical apparatus enables long-range, non-contact ground displacement measurement in hazardous environments. Controlled indoor and outdoor experiments demonstrate reliable detection of dynamic and seismic-like ground motions with sub-millimeter resolution. What are the implications of the main findings? System performance is evaluated under atmospheric turbulence and wind, revealing key limits and mitigation strategies for field deployment. The proposed approach provides a low-cost, scalable complement to traditional seismic and geodetic monitoring techniques. Ground-based remote sensing of seismic and geophysical displacements remains a major challenge due to environmental hazards, signal attenuation, and practical deployment limitations of …
Development Potential Of The Ucg-Eg Industry In Guizhou Province, China,
2026
Guizhou Provincial Key Laboratory of Coal Fluidized Mining/Bonanza Precision Mining and Environmental Protection Guizhou Provincial Academician Expert Workstation, Guizhou Geological and Mineral Resources Development Institute, Guiyang 550081, China; Guizhou Youchi Energy Technology Co., Ltd., Guiyang 550014, China
Development Potential Of The Ucg-Eg Industry In Guizhou Province, China, Wang Lingxia, Zhou Ze, Yi Tongsheng, Qin Yong, Yang Lei, Kong Weimin
Coal Geology & Exploration
Objective and Methods This study aims to promote the sustainable development of the underground coal gasification (UCG) industry and to extend the industrial chain of syngas development and utilization. To this end, this study analyzed the UCG-electricity generation (UCG-EG) potential of Guizhou Province based on the evaluation results of resources allowing UCG and the current status of energy and electric power structures of this province. A 3D analytical principle model for UCG-EG industry scenarios in Guizhou was constructed through scenario modelling. Using this model, the prospects of the UCG industry under low, medium, high, and ultra-high scenarios were quantitatively depicted. …
Factors Influencing Productivity And Production System Optimization For Deep Coalbed Methane In The Daning-Jixian Block, Ordos Basin,
2026
College of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China; State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing), Beijing 102249, China
Factors Influencing Productivity And Production System Optimization For Deep Coalbed Methane In The Daning-Jixian Block, Ordos Basin, Zhao Haifeng, Jia Zhaojie, Chen Mengqi, Yang Ziyi, Wang Bin, Lin Hongliang, Yang Yanfeng
Coal Geology & Exploration
Objective Deep coalbed methane (CBM) reservoirs are characterized by ultra-low porosity, ultra-low permeability, and super saturation, rendering it impractical to copy the productivity models of shallow coalbed methane and shale gas. Furthermore, the production performance of deep CBM varies significantly across different well sections. However, the impacts of different factors on the productivity of deep CBM remain poorly understood. This study conducted a numerical simulation analysis of the productivity of deep CBM in the Daning-Jixian block along the eastern margin of the Ordos Basin based on the geological characteristics of the block, aiming to explore the impacts of various key …
Influence Mechanisms Of Cleats On Hydraulic Fracture Propagation In Deep Coalbed Methane Reservoirs,
2026
College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
Influence Mechanisms Of Cleats On Hydraulic Fracture Propagation In Deep Coalbed Methane Reservoirs, Wang Haiyang, Lu Chen, Su Xu, Wang Yufei, Zhou Desheng
Coal Geology & Exploration
Objective Creating large-scale fracture networks through hydraulic fracturing serves as an important approach to the commercial development of deep coalbed methane (CBM) reservoirs. However, these reservoirs contain extensively developed cleats. The significantly different cementation strengths of cleat fillings lead to complex interactions between cemented cleats and major hydraulic fractures during fracture propagation. Therefore, clarifying the mechanisms underlying the influence of cemented cleats on hydraulic fracture propagation is critical to improving the simulation effects of deep CBM reservoirs. Methods Using particle flow code (PFC) discrete element method, combined with quasi-triaxial mechanical test results of the No.8 coal seam within the Yichuan …
Seepage Dynamics And Damage Characteristics Of Shaft Lining Concrete Under Hydraulic Coupling,
2026
State Key Laboratory for Safe Mining of Deep Coal Resources and Environment Protection, Anhui University of Science and Technology, Huainan 232001, China; School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China; National Engineering Laborary for Deep Shaft Construction Technology in Coal Mine, Anhui University of Science and Technology, Huainan 232001, China
Seepage Dynamics And Damage Characteristics Of Shaft Lining Concrete Under Hydraulic Coupling, Xue Weipei, Zhou Yaya, Cheng Hua, Yao Zhishu, Rong Chuanxin, Wang Zhongjian, Wu Hao
Coal Geology & Exploration
Objective Concrete serves as a lining material for support structures used in vertical shafts in coal mines, and its seepage performance and mechanical characteristics play a crucial role in ensuring structural safety. Furthermore, shaft lining concrete is placed under the groundwater level, subjected to a stress environment significantly different from that of surface concrete.Methods To investigate the impacts of groundwater seepage on the performance of shaft lining concrete under triaxial stress conditions, hydraulic coupling tests were conducted using a servo pressure testing machine equipped with a seepage apparatus, yielding data on permeability, elastic volumetric strain, crack volumetric strain, and …
Evolutionary Mechanisms And Control Strategies For Surrounding Rock Stability Of Inclined Shafts Under Groundwater Seepage,
2026
Inner Mongolia Research Institute, China University of Mining and Technology (Beijing), Ordos 017010, China; School of Energy and Mining Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Evolutionary Mechanisms And Control Strategies For Surrounding Rock Stability Of Inclined Shafts Under Groundwater Seepage, Zhang Cun, Zhao Xiangyu, Chen Yanhong, Ren Zhaopeng, Wu Runze
Coal Geology & Exploration
Background The western coal mining area has emerged as China’s primary coal production base. In this area, multiple ten-million-ton-scale coal mines are constructed using inclined shafts. Since inclined shafts run through multiple aquifers, many of them are subjected to shaft wall rupture and water inrushes to varying degrees.Methods This study aims to determine the impacts of groundwater seepage on the surrounding rock stability of inclined shafts. Using field survey, theoretical analysis, and numerical simulation, this study investigated the shaft wall stability of the main inclined shaft in water-rich sections in the Xiaojihan Coal Mine.Results and Conclusions Theoretical analysis …
Surface-Borehole Resistivity Tomography For Seepage Detection In Earth-Rock Dams,
2026
School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China; Zhejiang Institute of Hydraulics & Estuary (Zhejiang Institute of Marine Planning and Design), Hangzhou 310020, China; Zhejiang Guangchuan Engineering Consulting Co., Ltd., Hangzhou 310020, China
Surface-Borehole Resistivity Tomography For Seepage Detection In Earth-Rock Dams, Tan Lei, Hu Xiongwu, Zhang Pingsong, Jiang Xiaoyi, Dong Ya, Liu Fuda, Li Chunyang, Xu Hu
Coal Geology & Exploration
Objective Resistivity methods allow for effective detection of seepage in reservoir dams. However, when used to detect the hidden hazards of dams, the surface resistivity method fails to accurately identify vulnerable areas across an entire dam due to blind spots near both dam abutments and insufficient resolutions for deep parts. Methods This study proposed a seepage detection technique for earth-rock dams based on surface-borehole resistivity tomography, followed by the analysis of the distribution of surface-borehole resistivity under the lateral and vertical variations in a seepage zone through numerical simulations. This technique was applied to the Shibi reservoir dam. Using the …
Characteristics And Mechanisms Of Guar Gum Degradation By Indigenous Bacteria In Coal Seams,
2026
School of Life Sciences and Engineering, Henan University of Urban Construction, Pingdingshan 467000, China; School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
Characteristics And Mechanisms Of Guar Gum Degradation By Indigenous Bacteria In Coal Seams, Li Bing, Guo Hongyu, Zhou Xiao, Wang Haichao, Jian Kuo, Chen Zhaoying, Zhang Bin
Coal Geology & Exploration
Background Hydraulic fracturing serves as a stimulation technique extensively used in the commercial development of coalbed methane (CBM), in which guar gum is commonly used as a fracturing fluid thickener. However, under the low-temperature conditions of coal reservoirs, conventional chemical gel-breaking methods often suffer from incomplete gel breaking and high residue content, resulting in formation damage and a decrease in the production efficiency of CBM wells. Methods Using indigenous bacteria in coal seams as functional strains, this study conducted microbial gel-breaking experiments. It systematically investigated the characteristics of guar gum biodegradation by these bacteria and determined the dominant microbial taxa …
A Method For Diffracted Wave Separation And Imaging Based On The Gwa-Vmd,
2026
National Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology (Beijing), Beijing 100083, China; Key Laboratory of Mineralization and Exploration of the Upper Yellow River, Ministry of Natural Resources, Lanzhou 730046, China
A Method For Diffracted Wave Separation And Imaging Based On The Gwa-Vmd, Lin Peng, Liu Yulin, Peng Suping, Cui Xiaoqin, Guo Changbo, Yang Jie
Coal Geology & Exploration
Background Small-scale discontinuous geobodies such as faults, collapse columns, and pinch-out points are widely present in underground spaces. They are closely associated with the safe production and development of underground resources such as coals, oil, and gas. As the wave field responses of small-scale discontinuous geobodies, diffracted waves can overcome the shortcomings of traditional reflected wave imaging, being capable of accurately identifying and localizing small-scale geobodies. Objective and Method This study aims to achieve diffracted wave imaging of discontinuous geobodies. Based on the differences in kinematic and dynamic characteristics between reflected and diffracted waves, this study leveraged the precise self-adaptive …
Table Of Contents,
2026
China Coal Technology and Engineering Group (CCTEG)
Mechanism And Prevention Of Rockburst In Deep Asymmetric Goaf Areas Coal Seam Main Roadway,
2026
Coal Branch of ZTHC Energy Limited Liability Company, Ordos 017300, China
Mechanism And Prevention Of Rockburst In Deep Asymmetric Goaf Areas Coal Seam Main Roadway, Lu Xihui, Zhao Weiwei, Hao Yinghao, Cao Anye, Su Shijie, Lyu Guowei, Bai Gang
Coal Geology & Exploration
Objective With an increase in the utilization of main roadways in coal seams, rockburst have occurred increasingly more frequently in these main roadways. Investigating the mechanisms behind these rockburst under specific conditions, as well as differentiated prevention and control measures, holds great significance for the safe extraction of deep coal resources.Methods This study investigated the main roadways at risk of strong rockburst within a coal mine in Inner Mongolia. By integrating a range of methods, including field measurement, theoretical analysis, and FLAC3D-based numerical simulation, this study examined the evolutionary patterns of both the surrounding rock stress and the overburden …
Transformer-Driven Intelligent Prediction For The Time-Series Features Of Mine Pressure In Fully Mechanized Mining Face,
2026
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China; Collaborative Innovation Center for Coal Safety Production and Clean and Efficient Utilization, Jiaozuo 454003, China; Engineering Technology Research Center of Mine Water Disaster Control and Water Resources Utilization, Henan Polytechnic University, Jiaozuo 454003, China; Zhengzhou Institute for Advanced Research of Henan Polytechnic University, Zhengzhou 451464, China
Transformer-Driven Intelligent Prediction For The Time-Series Features Of Mine Pressure In Fully Mechanized Mining Face, Du Feng, Chen Bo, Wang Wenqiang, Pu Hai, Du Xueming, Li Guodong, Qiao Rui, Li Xinlei, Xu Jie, Cao Yu
Coal Geology & Exploration
Objective Mine pressure prediction represents an important means for early warning and management of disasters in coal seam roofs, serving as the prerequisite and foundation for safe production in intelligent mines. However, the complex and variable conditions of fully mechanized mining face lead to significant variations in the distribution of support pressure data acquired using electro-hydraulic control systems, complicating mine pressure prediction. Methods This study developed a Transformer-based mine pressure prediction model. Specifically, missing mine pressure data were filled using linear interpolation, and the data structure of mine pressure was adjusted using a sliding window algorithm. Based on the time-series …
Sedimentary Evidence For The Connection Between The Southern Margin Of The Ordos Basin And The Paleotethys Ocean During The Permian To Early Triassic,
2026
State Key Laboratory of Continental Evolution and Early Life, Department of Geology, Northwest University, Xi'an 710069, China
Sedimentary Evidence For The Connection Between The Southern Margin Of The Ordos Basin And The Paleotethys Ocean During The Permian To Early Triassic, Li Zonglin, Shi Yongsheng, Li Wenhou, Chen Long, Sun Jiaopeng
Coal Geology & Exploration
Objective Understanding the Permian-Early Triassic sedimentary environments along the southern margin of the Ordos Basin (also referred to as the SMOB) and their tectono-sedimentary responses to the Paleotethys Ocean plays a key role in determining the paleogeographic evolution and energy resource potential of the southern margin of the North China Craton. Methods This study investigated the Qinling Orogenic Belt (QOB) and the SMOB. Through systematic sedimentological examination based on drilling data and outcrop sections, along with a systematic review of existing paleontological findings, this study re-determined the Permian-Early Triassic tectono-paleogeographic frameworks along the SMOB. Furthermore, this study explored the paleogeography …
Mechanisms Behind Permeability Enhancement Of Coal Reservoirs Induced By Electro-Chemical Composite Energy Pulse Fracturing,
2026
School of Civil Engineering, Sun Yat-sen University, Zhuhai 519000, China; State Key Laboratory for Tunnel Engineering, Sun Yat-sen University, Guangzhou 510275, China; Henan International Joint Laboratory of Unconventional Energy Geology and Development, Jiaozuo 454003, China
Mechanisms Behind Permeability Enhancement Of Coal Reservoirs Induced By Electro-Chemical Composite Energy Pulse Fracturing, Meng Bingbing, Cao Yunxing, Duan Hongfei, Zhang Xinsheng, Zhao Lijuan, Shi Bin, Yu Guofeng
Coal Geology & Exploration
Background Electro-chemical composite energy pulse fracturing (ECCE-PF) technology (i.e., the electrical explosion of metal wires igniting energetic materials) can effectively change the pore structure of coal reservoirs and enhance coal seam permeability. Elucidating the mechanisms behind the influence of this technology on both the scales of modified coal pores/fractures and methane desorption pattern can provide a theoretical basis for the wide application of this technology to coal seam permeability enhancement. Methods This study investigated coal samples from the Zhangcun Coal Mine in the Lu’an coal mining area, Shanxi Province. Using a self-developed ECCE-PF experimental platform, an experimental study was conducted …
Synergistic Breaking Of Composite Key Strata And Energy Evolution Of The Overburden Under Mining Disturbances,
2026
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; College of Water Resources and Hydro-electric Engineering, Xi’an University of Technology, Xi’an 710048, China; State Key Laboratory of Disaster Prevention and Ecology Protection in Open-pit Coal Mines, Xi’an 710077, China; Shaanxi Union Research Center of University and Enterprise for Mine Ecological Environment Protection and Restoration in the Middle of Yellow River Basin, Xi’an 710077, China
Synergistic Breaking Of Composite Key Strata And Energy Evolution Of The Overburden Under Mining Disturbances, Wu Boqiang, Wang Xiaodong, Zhu Shibin, Xu Ganggang, Zhang Yuehong
Coal Geology & Exploration
Objective This study aims to explore the synergistic breaking responses and energy evolution mechanisms of composite key strata under mining disturbances. These efforts will provide robust theoretical support for the prevention and control of disaster-causing accidents in the surrounding rocks of coal seams and hold great significance for ensuring safe mining operations underground. Methods The breaking and instability characteristics of composite key strata under mining disturbances were analyzed by integrating physical simulation using similar materials, numerical calculation, and theoretical analysis. Accordingly, the accumulation and release patterns of strain energy and gravitational potential energy in the overburden were investigated. Finally, the …
Advances In Research On Enrichment Of Major Metallic Elements Within Coals In Coal-Accumulating Basins Across Xinjiang, China,
2026
General Prospecting Institute of China National Administration of Coal Geology, Beijing 100038, China
Advances In Research On Enrichment Of Major Metallic Elements Within Coals In Coal-Accumulating Basins Across Xinjiang, China, Ning Shuzheng, Wang Xiaoxia, Huang Shaoqing, Yan Xiaoyun, Xu Xiaotao, Zhang Jianqiang, Zhang Li, Hou Yuehua
Coal Geology & Exploration
Background Xinjiang serves as an important coal production base in northwestern China. This region holds approximately 40% of China’s predicted coal reserves, with its coal resources primarily distributed in coal-accumulating basins such as Junggar, Yili, Tuha, and Santanghu.Methods Focusing on strategic metals (e.g., lithium, rare earth elements, zirconium, hafnium, niobium, and tantalum), hazardous metals (e.g., arsenic, mercury, and sodium), radioactive metals (e.g., uranium and thorium), and other heavy metals (e.g., iron and manganese), this study explored the enrichment mechanisms and metallogenic potential of these metallic elements in coals across representative coal-accumulating basins in Xinjiang.Advances The metallic element enrichment …
Research Progress And Prospects Of High-Salinity Mine Water Storage In Deep Strata,
2026
School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China; CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; State Key Laboratory of Disaster Prevention and Ecology Protection in Open-pit Coal Mines, Xi’an 710077, China
Research Progress And Prospects Of High-Salinity Mine Water Storage In Deep Strata, Xue Jiankun, Wang Shuangming, Zhang Pingsong, Wang Xiaodong, Zhou Zhenfang, Wang Tiantian, Zhang Quan, Xu Shi'ang, Wang Zhizhou
Coal Geology & Exploration
Background High-salinity mine water (HSMW) is widely distributed in mining areas in western China, while its discharge and treatment pose severe challenges to both the ecosystem and resource utilization. In recent years, HSMW storage in deep strata has gained widespread attention as an environmentally friendly and resource-saving approach for mine water treatment.Advances Focusing on the general characteristics of HSMW, this study systematically reviewed the key scientific issues and technical bottlenecks associated with HSMW storage in deep strata, highlighting its principles, technical classification, and engineering application. It comprehensively elucidated the applicability boundaries of this technology, involving the core links such …
Mechanisms Behind Water Inrush Disasters Induced By Tbm Tunneling Passing Through Deeply Buried Fault Fracture Zones,
2026
Chinese Institute of Coal Science, Beijing 100013, China; CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; National Key Laboratory of Coal Mine Disaster Prevention and Control, Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China
Mechanisms Behind Water Inrush Disasters Induced By Tbm Tunneling Passing Through Deeply Buried Fault Fracture Zones, Li Zhi, Dong Shuning, Shi Zhiyuan, Tong Renjian
Coal Geology & Exploration
Objectives While passing through a deeply buried water-rich fault fracture zone, a tunnel boring machine (TBM) frequently faces an extremely high risk of water inrushes, seriously restricting the engineering safety and efficiency. Methods This study aims to reveal the evolution patterns of water inrush disasters in the case where the TBM roadway tunneling passes through faults zones and propose technologies for advance prevention and control to mitigate the water inrush risk. Against the engineering background of the tunneling of a main roadway in a coal mine within a North China-type coalfield, this study established a 3D numerical model using the …
