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Development History And Prospects Of Geological Guarantee In The Coal Industry: A Review, Liu Feng, Liu Wenming, Dong Shuning, Wang Hao, Cheng Jianyuan, Liu Zaibin, Fan Tao, Ma Liang, An Lin, Chen Baohui, Yan Zicheng, Jiang Bici May 2026

Development History And Prospects Of Geological Guarantee In The Coal Industry: A Review, Liu Feng, Liu Wenming, Dong Shuning, Wang Hao, Cheng Jianyuan, Liu Zaibin, Fan Tao, Ma Liang, An Lin, Chen Baohui, Yan Zicheng, Jiang Bici

Coal Geology & Exploration

Background In China, the coal industry serves as a ballast stone and stabilizer for rapid socio-economic development and national energy security. Despite huge reserves, China’s coal resources are characterized by uneven spatial distribution, diverse coal seams, complex geological structures, and significantly different mining conditions. During coal mining, unclear geological conditions frequently lead to the abandonment of tunneling roadways, poor mining continuity, frequent equipment relocation, and the abrupt onset of concealed geologic hazards. These challenges ultimately result in difficult advancement of mining face, frequent casualties, and considerable economic losses. Geological guarantee represents a crucial foundation and key technology throughout the shaft …


Advances In Geological Guarantee Technologies For Safe, Efficient, And Intelligent Coal Mining In China, Sun Siqing, Miao Yaowu, Jia Lilong May 2026

Advances In Geological Guarantee Technologies For Safe, Efficient, And Intelligent Coal Mining In China, Sun Siqing, Miao Yaowu, Jia Lilong

Coal Geology & Exploration

Background Coal mining geology provides the foundation for efficient coal mining, as well as hazard prevention and control. Based on the revision to China’s normative documents entitled Regulations on Geological Work in Coal Mines and Detailed Rules for Geological Work in Coal Mines, the exploration of technologies for coal mining geology, and considerable experience in coal mine production practices, this study systematically reviews the advances in geological guarantee technologies for safe, efficient, and intelligent coal mining in China over the past four decades.Advances Six aspects of advances have been primarily achieved in geological guarantee technologies in China: (1) The …


Mechanisms Underlying Coal Instability During Coal And Gas Outbursts Induced By Deep Mining, Zhang Chaolin, Li Yunfu, Li Zhonghui, Wang Enyuan, Yang Shiji, Chen Jiawei, Wang Meng May 2026

Mechanisms Underlying Coal Instability During Coal And Gas Outbursts Induced By Deep Mining, Zhang Chaolin, Li Yunfu, Li Zhonghui, Wang Enyuan, Yang Shiji, Chen Jiawei, Wang Meng

Coal Geology & Exploration

Objective The gradual depletion of shallow coal resources drives a shift to the mining of deep coal seams. However, the complex deep mining environment significantly increases the potential risks and severity of coal and gas outbursts. Therefore, there exists an urgent need to investigate the mechanisms underlying the mechanical instability of coals under deep mining, aiming to provide guidance for the safe mining of deep coal mines.Methods By integrating physical experiments, numerical simulations, and theoretical analysis, this study investigated coal and gas outbursts under burial depths of 500 m, 1000 m, and 1600 m and established a multi-field coupling …


Analysis Of Typical Cases And Development Trends Of Coalbed Methane (Coal Mine Gas) Drainage Techniques In Coal Mining Areas, Hao Shijun, Jiang Wenping, Zhang Jing, Du Xinfeng, Mo Haitao, Duan Huijun May 2026

Analysis Of Typical Cases And Development Trends Of Coalbed Methane (Coal Mine Gas) Drainage Techniques In Coal Mining Areas, Hao Shijun, Jiang Wenping, Zhang Jing, Du Xinfeng, Mo Haitao, Duan Huijun

Coal Geology & Exploration

Background In the coal mining areas of China, coalbed methane (coal mine gas) occurs under complex conditions, rendering it difficult to achieve its efficient resource exploitation and effective hazard control using a single technique.Advances As indicated by the current state of the research, development, and engineering application of coalbed methane (coal mine gas) drainage techniques in China in recent years, the drainage methods can be classified into three categories according to their spatial arrangements: surface drainage, underground drainage, and surface-underground combined drainage. Furthermore, the surface and underground drainage methods can be subdivided into four types based on their temporal …


Key Techniques For Volume Fracturing Of Deep Coalbed Methane Reservoirs And Their Applications: A Case Study Of The Daning-Jixian Block, Li Shuguang, Xiong Xianyue, Zhen Huaibin, Bai Kunsen, Ji Yuan, Yuan Pu, Li Zhongbai, Zhu Weiping May 2026

Key Techniques For Volume Fracturing Of Deep Coalbed Methane Reservoirs And Their Applications: A Case Study Of The Daning-Jixian Block, Li Shuguang, Xiong Xianyue, Zhen Huaibin, Bai Kunsen, Ji Yuan, Yuan Pu, Li Zhongbai, Zhu Weiping

Coal Geology & Exploration

Background Deep coalbed methane (CBM) reservoirs generally exhibit ultra-low porosity and permeability, high stress, predominance of nanopores, and complex fracture propagation. These characteristics complicate reservoir stimulation, thereby restricting the enhancement in single-well productivity and commercial exploitation. Since 2019, technologies for deep CBM recovery have evolved from volumetric acid fracturing, which highlights the enhancement of matrix permeability, into large-scale volume fracturing focusing on the elevation of both the fracture network scale and proppant efficiency. In 2023, ultra-large-scale volume fracturing aimed at maximizing estimated ultimate recovery (EUR) was further developed. However, the implementation of this novel technique poses challenges such as a …


Damage Evolution Of Coal Reservoirs Under Cyclic Disturbances And Optimization Suggestions For Deep Reservoir Stimulation, Chen Shida, Pu Yifan, Zhao Longmei, Li Xiang, Huang Li, Tang Dazhen, Zhang Yafei, Li Song, Tao Shu May 2026

Damage Evolution Of Coal Reservoirs Under Cyclic Disturbances And Optimization Suggestions For Deep Reservoir Stimulation, Chen Shida, Pu Yifan, Zhao Longmei, Li Xiang, Huang Li, Tang Dazhen, Zhang Yafei, Li Song, Tao Shu

Coal Geology & Exploration

Objectives and Methods During volume fracturing or multi-round hydraulic fracturing of deep coal reservoirs, pressure fluctuations induced by the propagation of fracture tips and fluid accumulation within fractures cause cyclic perturbations to surrounding rocks. To clarify both the mechanical responses of coals and the mechanisms behind fracture evolution within coal reservoirs under such cyclic perturbations, this study conducted triaxial cyclic loading-unloading tests on high-rank coals under varying confining pressures, stress amplitudes, and loading modes. In combination with field engineering data, this study proposed strategies for optimizing deep coal reservoir stimulation. Results and Conclusions The stress-strain curves of coals under cyclic …


Pathways And Modes For Prevention And Control Of Acid Mine Drainage-Induced Pollution In China, Liu Guo, Chen Qian, Gan Xinzhu, Tang Jie, Zhu Mingtan, Fan Jiajun, Ren Shuang May 2026

Pathways And Modes For Prevention And Control Of Acid Mine Drainage-Induced Pollution In China, Liu Guo, Chen Qian, Gan Xinzhu, Tang Jie, Zhu Mingtan, Fan Jiajun, Ren Shuang

Coal Geology & Exploration

Background Mining activities in polymetallic sulfide mines significantly disrupt regional hydrogeochemical equilibrium, leading to the formation of acid mine drainage (AMD). Consequently, severe pollution of aquatic environments occurs, posing a threat to regional water resource security. To lay the foundation for the prevention and control of AMD-induced pollution, it is necessary to investigate the formation and evolution mechanisms of AMD and establish a low-cost, sustainable risk management and control mode. Methods Based on field sampling and literature research, this study made statistics of the hydrochemical characteristics of AMD from different polymetallic sulfide mining areas across China and elucidated the processes …


Advances In Research On The Quality, Influential Factors, And Contamination Prevention And Control Technologies Of Mine Water In Representative Coal Mining Areas Of China, Xu Guangquan, Zhang Haitao, Liang Miao, Chen Xiaoqing, Li Zixuan, Li Xu, He Jianghui May 2026

Advances In Research On The Quality, Influential Factors, And Contamination Prevention And Control Technologies Of Mine Water In Representative Coal Mining Areas Of China, Xu Guangquan, Zhang Haitao, Liang Miao, Chen Xiaoqing, Li Zixuan, Li Xu, He Jianghui

Coal Geology & Exploration

Background Mine water represents a major type of water body produced during coal mining. Investigating its quality, influential factors, and contamination prevention and control technologies is of great significance for environmental protection and the sustainable utilization of water resources in coal mining areas.Methods Based on field surveys and literature review, this study systematically analyzed the quality and formation mechanisms of mine water in representative coal mining areas of China. Furthermore, it explored the advances and primary challenges in current research on technologies for the prevention and control of mine water contamination and proposed major directions for future research. Advances …


Geophysical Responses And Their Statistical Relationships With Lithium And Kaolinite Contents For Lithium-Rich Coals In The Yangquan Mining Area, Chen Tongjun, Xu Haicheng, Li Wan May 2026

Geophysical Responses And Their Statistical Relationships With Lithium And Kaolinite Contents For Lithium-Rich Coals In The Yangquan Mining Area, Chen Tongjun, Xu Haicheng, Li Wan

Coal Geology & Exploration

Objective China, representing the world's largest consumer of lithium resources, suffers from a limited endowment of conventional lithium resources, rendering it inevitable for China to seek to develop and utilize abundant coal-hosted lithium resources. Through a comparative analysis of coal samples from the lithium-rich No. 8 and the ordinary No. 15 coal seams in the Taiyuan Formation, Yangquan mining area, Shanxi Province, this study explored the statistical relationships between the lithium and kaolinite contents and geophysical responses. Accordingly, the feasibility of the indirect detection of coal-hosted lithium resources using geophysical methods was assessed. Methods First, by testing the lithium content …


Development Path And Prospects Of Technologies For Detecting Hidden Hazards In Coalfield Fire Zones, Deng Jun, Wang Jinrui, Ren Shuaijing, Song Zeyang, Wang Caiping, Li Yaqing, Lu Junhui, Qu Gaoyang May 2026

Development Path And Prospects Of Technologies For Detecting Hidden Hazards In Coalfield Fire Zones, Deng Jun, Wang Jinrui, Ren Shuaijing, Song Zeyang, Wang Caiping, Li Yaqing, Lu Junhui, Qu Gaoyang

Coal Geology & Exploration

Background Hidden hazards in coalfield fire zones are characterized by limited detectability, rapid evolution, and multi-hazard coupling, posing major challenges to the safe coal mining and related ecological restoration. Methods This study aims to achieve the fine-scale identification and risk control of hidden hazards in coalfield fire zones. Based on a systematic review of the genetic mechanisms and spatial distribution patterns of coalfield fire zones, this study summarizes the characteristics of three primary fire zone types: outcrop/surface fire zones, shallowly buried fire zones, and deeply buried underground burnt-out areas and fire zones within old coal pits. Multi-dimensional hazards caused by …


Middle School Teachers’ Perceptions On Instructional Technology Used For Career Readiness With Autism Spectrum Disorder Students, Olga Fiodorovna Tulei May 2026

Middle School Teachers’ Perceptions On Instructional Technology Used For Career Readiness With Autism Spectrum Disorder Students, Olga Fiodorovna Tulei

Walden Dissertations and Doctoral Studies

No abstract provided.


Reconstruction And Repatriation Of Looted Cultural Heritage Property Ownership Mechanism, Yichi Zhang May 2026

Reconstruction And Repatriation Of Looted Cultural Heritage Property Ownership Mechanism, Yichi Zhang

Pepperdine Policy Review

The displacement of cultural artifacts through conflict, colonization, and illicit trafficking has created profound gaps in humanity's shared heritage. This paper examines the systemic barriers to cultural property restitution and proposes a structured dispute resolution framework as the primary remedy. Drawing on the social, nonmarket, and economic values of cultural heritage, the study establishes why repatriation extends beyond legal formality into questions of identity, sovereignty, and collective memory. A review of existing international instruments, including the 1954 Hague Convention, the 1970 UNESCO Convention, and the ICPRCP, reveals persistent enforcement gaps and jurisdictional inconsistencies that impede meaningful restitution. Comparative case studies …


Electrical Grid Architectures For Smart Cities From Digitalized Power Systems To Ai-Enabled Urban Energy Ecosystems, Ehab Bayoumi May 2026

Electrical Grid Architectures For Smart Cities From Digitalized Power Systems To Ai-Enabled Urban Energy Ecosystems, Ehab Bayoumi

Mechanical Engineering

Smart cities increasingly depend on electrical grid infrastructures capable of operating under high levels of digitalization, decentralization, and intelligence while maintaining reliability, security, and governance at the city scale. However, conventional power systems, historically designed for centralized generation and passive operation, are poorly aligned with the operational complexity, multi-actor coordination, and cross-sector integration characteristic of urban energy systems. This review develops an architecture-first perspective on smart-city electrical grids, tracing their evolution from digitalized power networks to decentralized and AI-enabled urban energy ecosystems. Rather than focusing on individual technologies, the study evaluates grid architectures using a multi-layer framework that integrates physical …


Homeless Systems Of Care And Outcomes In The Augusta–Richmond County, Georgia Geographical Area, Zenia Negron May 2026

Homeless Systems Of Care And Outcomes In The Augusta–Richmond County, Georgia Geographical Area, Zenia Negron

Walden Dissertations and Doctoral Studies

No abstract provided.


Fuzzy Neutrosophic Turiyam Sets Diagrammatic And Operational Analysis With Real World Applications, Poongothai Eswaran, Balaganesan Palanivelu, Florentin Smarandache May 2026

Fuzzy Neutrosophic Turiyam Sets Diagrammatic And Operational Analysis With Real World Applications, Poongothai Eswaran, Balaganesan Palanivelu, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.


A Priority-Optimized Aggregation Framework For Multi-Expert Multi-Criteria Neutrosophic Assignment Problems, Priyanka U, Dr. V. Kamal Nasir May 2026

A Priority-Optimized Aggregation Framework For Multi-Expert Multi-Criteria Neutrosophic Assignment Problems, Priyanka U, Dr. V. Kamal Nasir

Neutrosophic Sets and Systems

No abstract provided.


A Unified Framework Of Fuzzy Neutrosophic Supra Set , Turiyam Set For Advanced Medical Diagnosis, Poongothai Eswaran, Balaganesan Palanivelu, Florentin Smarandache May 2026

A Unified Framework Of Fuzzy Neutrosophic Supra Set , Turiyam Set For Advanced Medical Diagnosis, Poongothai Eswaran, Balaganesan Palanivelu, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.


Iterative Neutrosophic Refinement For Reliable Tumor Segmentation In Brain Mri Images, Sofia Jennifer J, Kalaivani C, Saraswathi S May 2026

Iterative Neutrosophic Refinement For Reliable Tumor Segmentation In Brain Mri Images, Sofia Jennifer J, Kalaivani C, Saraswathi S

Neutrosophic Sets and Systems

No abstract provided.


Bibliometric Study Of Neutrosophy As An Emerging Discipline, Miguel Cruz Ramírez, Osvaldo Jesús Rojas Velázquez, Elio H. Cables May 2026

Bibliometric Study Of Neutrosophy As An Emerging Discipline, Miguel Cruz Ramírez, Osvaldo Jesús Rojas Velázquez, Elio H. Cables

Neutrosophic Sets and Systems

No abstract provided.


Probabilistic And Neutrosophic Coefficient Conditions In Geometric Function Theory With Applications To Sound Denoising Associated With Mersenne Polynomials, Ibrahim Tunji Awolere, Abimbola Adeniyi Ayeni, Abiodun Tinuoye Oladipo May 2026

Probabilistic And Neutrosophic Coefficient Conditions In Geometric Function Theory With Applications To Sound Denoising Associated With Mersenne Polynomials, Ibrahim Tunji Awolere, Abimbola Adeniyi Ayeni, Abiodun Tinuoye Oladipo

Neutrosophic Sets and Systems

No abstract provided.


Fuzzy Reliability Analysis Of A Robotic System Using Single-Valued Neutrosophic Sets Based On Score, Accuracy And Certainty Functions, Deepak Kumar May 2026

Fuzzy Reliability Analysis Of A Robotic System Using Single-Valued Neutrosophic Sets Based On Score, Accuracy And Certainty Functions, Deepak Kumar

Neutrosophic Sets and Systems

No abstract provided.


Solution Of Fully Fuzzy Neutrosophic Lyapunov Matrix Equation, Myra Suphelea Asmizal, Wan Suhana Wan Daud, Khairu Azlan Abd Aziz, Siti Rohana Goh Abdullah May 2026

Solution Of Fully Fuzzy Neutrosophic Lyapunov Matrix Equation, Myra Suphelea Asmizal, Wan Suhana Wan Daud, Khairu Azlan Abd Aziz, Siti Rohana Goh Abdullah

Neutrosophic Sets and Systems

No abstract provided.


A Neutrosophic Interpretation Of The Island Rule: From The Tethys Ocean To Urban Gigantism In Freshwater Crabs, Florentin Smarandache May 2026

A Neutrosophic Interpretation Of The Island Rule: From The Tethys Ocean To Urban Gigantism In Freshwater Crabs, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.


Decision-Making Under Deep Uncertainty: A Generalized Neutrosophic Fuzzy Assignment Model With Multi-Criteria Multi-Expert Evaluation, Priyanka U, Dr. V. Kamal Nasir May 2026

Decision-Making Under Deep Uncertainty: A Generalized Neutrosophic Fuzzy Assignment Model With Multi-Criteria Multi-Expert Evaluation, Priyanka U, Dr. V. Kamal Nasir

Neutrosophic Sets and Systems

No abstract provided.


Best Proximity Point Results In Neutrosophic Fuzzy Metric Space For Ciric Type Α-Ψ Proximal Contractive Mappings, Samriddhi Ghosh, Ramakant Bhardwaj, Purvee Bhardwaj, Sneha Khandait, Satyendra Narayan May 2026

Best Proximity Point Results In Neutrosophic Fuzzy Metric Space For Ciric Type Α-Ψ Proximal Contractive Mappings, Samriddhi Ghosh, Ramakant Bhardwaj, Purvee Bhardwaj, Sneha Khandait, Satyendra Narayan

Neutrosophic Sets and Systems

No abstract provided.


New Classes Of Δ − Β∗-Continuous Mappings In M-Polar Neutrosophic Topological Spaces, Shadia M. Noori, Asmaa G. Raoof, S.R. Yaseen, Qays Hatem Imran, Giorgio Nordo, Lorenzo Aff´E May 2026

New Classes Of Δ − Β∗-Continuous Mappings In M-Polar Neutrosophic Topological Spaces, Shadia M. Noori, Asmaa G. Raoof, S.R. Yaseen, Qays Hatem Imran, Giorgio Nordo, Lorenzo Aff´E

Neutrosophic Sets and Systems

No abstract provided.


P-Spaces, Weak P-Spaces And Almost P-Spaces On Fuzzy Neutrosophic Topological Spaces, Poongothai Eswaran, Balaganesan Palanivelu May 2026

P-Spaces, Weak P-Spaces And Almost P-Spaces On Fuzzy Neutrosophic Topological Spaces, Poongothai Eswaran, Balaganesan Palanivelu

Neutrosophic Sets and Systems

No abstract provided.


Δβ-Open Sets In Pythagorean Neutrosophic Nano Topological Spaces And Their Application Via Machine Learning, Mohanarao Navuluri, Shantha Lakshmi K May 2026

Δβ-Open Sets In Pythagorean Neutrosophic Nano Topological Spaces And Their Application Via Machine Learning, Mohanarao Navuluri, Shantha Lakshmi K

Neutrosophic Sets and Systems

No abstract provided.


Novel Similarity Technique Of Neutrosophic Sets And Application In Higher Education Context, Duong.T.T Duong, Huynh.T Uyen, Duong.T. Dam, Nguyen Dinh Huy May 2026

Novel Similarity Technique Of Neutrosophic Sets And Application In Higher Education Context, Duong.T.T Duong, Huynh.T Uyen, Duong.T. Dam, Nguyen Dinh Huy

Neutrosophic Sets and Systems

No abstract provided.


Application Of New Neutrosophic Open Set Via Neutrosophic Topological Spaces, S.R. Yaseen, Qays Hatem Imran, Giorgio Nordo May 2026

Application Of New Neutrosophic Open Set Via Neutrosophic Topological Spaces, S.R. Yaseen, Qays Hatem Imran, Giorgio Nordo

Neutrosophic Sets and Systems

No abstract provided.