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Recent Trends in Multi-Field Coupling Theory and Technology for Deep Coal Mining and Rock Mechanics

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Civil Engineering".

Deadline for manuscript submissions: 20 May 2026 | Viewed by 1255

Special Issue Editors

Dr. Hongwei Zhang

E-Mail Website
Guest Editor
School of Energy and Mining Engineering, China University of Mining and Technology, Beijing 100083, China
Interests: coal mining; geothermal energy development; rock mechanics; high-temperature and high-pressure rock mechanics; multi-field coupling theory in mining; rock strata and mining disaster control
Prof. Dr. Qian Yin

E-Mail Website
Guest Editor
School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China
Interests: deep underground engineering; rock mechanics; multi-field coupling theory in mining

Special Issue Information

Dear Colleagues,

Deep mining has become an inevitable trend for humanity in order to acquire underground mineral resources. Deep mining faces complex multi-field coupling environments and geological conditions, making traditional rock mechanics theories inadequate to meet the demands of deep mining. In recent years, emerging theories and technologies, such as deep coal and geothermal co-mining, fluidized mining, and underground gasification, have driven the continuous development of theories and technologies for safe and efficient mining. In this Special Issue, we will focus on the multi-field coupling theory of deep coal mining or rock mechanics, particularly on new theories, technologies, and innovative mining methods. Recommended topics include, but are not limited to, the following:

 

  • Mechanical properties of deep coal/rock masses and multi-field coupling processes;
  • Experimental and numerical simulation techniques for multi-field coupling in deep rock masses;
  • Theories and technological innovations in deep mineral resource extraction;
  • Coordinated extraction of deep coal and geothermal resources;
  • Fluidized mining of solid mineral resources;
  • Theories and techniques for underground gasification of deep coal;
  • Disaster prevention and control in deep mining.

Dr. Hongwei Zhang
Prof. Dr. Qian Yin
Guest Editors

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • deep coal mining
  • rock mechanics
  • multiphysics
  • new theory and technology
  • disaster control
  • mining method

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Published Papers (2 papers)

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Research

28 pages, 16710 KB  
Article
Optimization of Vane Number for Coal Loading in Shearer Drums (1400 mm and 2240 mm) via Discrete Element Modeling
by Weipeng Xu, Qiulai Huang, Wenhe Zhang, Shengru Zhang, Ziyao Ma, Kuidong Gao and Ning Jiang
Appl. Sci. 2025, 15(21), 11522; https://doi.org/10.3390/app152111522 - 28 Oct 2025
Viewed by 208
Abstract
The loading rate of coal is significantly influenced by the number of vanes on shearer drums. However, in actual production, 1400 mm diameter drums feature two-vane and three-vane designs, while 2240 mm diameter ones have three-vane and four-vane designs, with the vane number [...] Read more.
The loading rate of coal is significantly influenced by the number of vanes on shearer drums. However, in actual production, 1400 mm diameter drums feature two-vane and three-vane designs, while 2240 mm diameter ones have three-vane and four-vane designs, with the vane number corresponding to the optimal coal-loading rate remaining unclear. To reveal the correlation between vane number and coal-loading rate for such drums, parameters were calibrated through multiple physical tests in this study. Supported by field data, simulation analyses were conducted via the discrete element method to investigate the effect of the vane number on the drum coal-loading rate under different moisture contents and traction speeds. The results indicated that particle adhesion initially increases and then decreases with the moisture content, with the peak characteristics influenced by the particle size. Particle movement during drum coal mining is jointly governed by multiple factors. For 1400 mm drums, two or three vanes should be selected depending on moisture fluctuations and coal transportation requirements, whereas for 2240 mm drums, three or four vanes are recommended based on the balance between coal-cutting volume, conveying capacity, and traction speed. Full article
(This article belongs to the Special Issue Recent Trends in Multi-Field Coupling Theory and Technology for Deep Coal Mining and Rock Mechanics)
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32 pages, 9776 KB  
Article
Application of Comprehensive Geophysical Methods in the Exploration of Fire Area No. 1 in the Miaoergou Coal Field, Xinjiang
by Xinzhong Zhan, Haiyan Yang, Bowen Zhang, Jinlong Liu, Yingying Zhang and Fuhao Li
Appl. Sci. 2025, 15(20), 11164; https://doi.org/10.3390/app152011164 - 17 Oct 2025
Viewed by 395
Abstract
Coal spontaneous combustion in arid regions poses severe threats to both ecological security and resource sustainability. Focusing on the detection challenges in Fire Zone No. 1 of the Miaoergou Coalfield, Xinjiang, this study proposes an Integrated Geophysical Collaborative Detection Framework that combines high-precision [...] Read more.
Coal spontaneous combustion in arid regions poses severe threats to both ecological security and resource sustainability. Focusing on the detection challenges in Fire Zone No. 1 of the Miaoergou Coalfield, Xinjiang, this study proposes an Integrated Geophysical Collaborative Detection Framework that combines high-precision magnetic surveys, spontaneous potential (SP) measurements, and transient electromagnetic (TEM) methods. This innovative framework effectively overcomes the limitations of traditional single-method detection approaches, enabling the precise delineation of fire zone boundaries and the accurate characterization of spatial dynamics of coal fires. The key findings of the study are as follows: (1) High-magnetic anomalies (with a maximum ΔT of 1886.3 nT) exhibit a strong correlation with magnetite-enriched burnt rocks and dense fracture networks (density > 15 fractures/m), with a correlation coefficient (R2) of 0.89; (2) Negative SP anomalies (with a minimum SP of −38.17 mV) can effectively reflect redox interfaces and water-saturated zones (moisture content > 18%), forming a “positive–negative–positive” annular spatial structure where the boundary gradient exceeds 3 mV/m; (3) TEM measurements identify high-resistivity anomalies (resistivity ρ = 260–320 Ω·m), which correspond to non-waterlogged goaf collapse areas. Spatial integration analysis of the three sets of geophysical data shows an anomaly overlap rate of over 85%, and this result is further validated by borehole data with an error margin of less than 10%. This study demonstrates that multi-parameter geophysical coupling can effectively characterize the thermo-hydro-chemical processes associated with coal fires, thereby providing critical technical support for the accurate identification of fire boundaries and the implementation of disaster mitigation measures in arid regions. Full article
(This article belongs to the Special Issue Recent Trends in Multi-Field Coupling Theory and Technology for Deep Coal Mining and Rock Mechanics)
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