China University of Mining and Technology

Dual-scale undulation characterisation and modelling of sedimentary bauxite deposits

Abstract Sedimentary bauxite deposits exhibit both regional-scale orebody undulations and irregular local ore–rock interfaces, which cannot be adequately represented using models constructed solely from borehole data. Taking the Aojiawan II bauxite mine in Lüliang, Shanxi Provinc...

Reconstruction of post-mining porosity-permeability field in abandoned coal mine goaf and its implication for CO2 sequestration

The post-mining pore–fracture structure significantly influences fluid migration and storage within the goaf, yet it remains inadequately represented in most existing models. This study proposes and field-validates a mechanics-based method for reconstructing the three-dimensional...

Polydopamine‐Mediated Interfacial Engineering of Perylene Diimide Organic Semiconductors for Photocatalytic Hydrogen Evolution

ABSTRACT Efficient and durable hydrogen evolution with PDI‐based organic supramolecular photocatalysts remains limited by insufficient surface‐active sites, structural instability and inefficient charge utilization. Here, we design a bioinspired polydopamine (PDA)‐mediated interf...

Hot Flue Gas-Enhanced Coalbed Methane Recovery: Comparative Discrete Fracture Network and Equivalent Continuum Modeling

Abstract Hot flue gas injection provides a potential approach for enhancing methane displacement from low-permeability coal, but methane transport is strongly controlled by the heterogeneous pore-fracture structure of coal. How different representations of fractures affect the pr...

A Bibliometric Review of Chinese Research on Coal Spontaneous Combustion Inhibitors in Years 1990–2025

To better understand the research status and development trends of coal spontaneous combustion inhibitors in China, this study uses CiteSpace to conduct a bibliometric analysis of relevant literature from the CNKI database (1990–2025). The analysis covers publication trends, inst...

Effects of water intrusion on fracture characteristics of hard coal

Abstract Aquifer water can cause serious geological hazards by catastrophically rushing into underground space. The water seepage can increase the moisture content and pore pressure of coal/rock, which can change mechanical behaviour of coal/rock subject to tectonic and abutment...

Comparative Thermo–Hydro–Mechanical Analysis of Hydraulic and Supercritical CO2 Fracturing for Enhanced Reservoir Permeability: A Mini-Review

Abstract Hydraulic fracturing (HF) and supercritical carbon dioxide (SC-CO2) fracturing are essential technologies for enhancing reservoir permeability in unconventional energy production. Determining the optimal fracturing strategy for specific reservoir conditions is a technica...

Ultraviolet-enhanced oxidative activation of pre-oxidized coal during storage: radical evolution and mechanistic insights into low-temperature oxidation

Coal exposed to air and solar radiation during open storage and transportation undergoes progressive low-temperature oxidation; however, the molecular mechanism by which ultraviolet (UV) irradiation activates the radical network of pre-oxidized coal remains unclear. In this study...

Edge-Affinity-Directed Selective Pore-Mouth Sealing in Coal-Derived Hard Carbon for Stable and High-Capacity Sodium Storage

Abstract Sodium-ion batteries are attractive for large-scale energy storage, but the limited capacity of hard-carbon anodes constrains practical energy density. Increasing porosity can boost capacity, but typically enlarges the electrolyte-accessible surface, lowers the initial C...

Experimental Investigation on the Evolution Mechanism of Resistivity in Limestone Under Triaxial Loading-Induced Damage

Electrical resistivity is a sensitive indicator of rock damage, yet the quantitative link between pore-structure change and resistivity response under varied hydro-thermo-mechanical conditions remains poorly constrained. In this study, triaxial compression tests were conducted on...

A goal-driven framework for carbon neutrality technology development

Abstract To achieve the mid-21st century carbon neutrality goal, accelerated carbon neutrality technology (CNT) innovation and deployment are needed, while most existing technologies and low-carbon systems fall short. Thus, a comprehensive CNT development roadmap is crucial for p...

Reliability-Aware Dual-Stream Self-Training for Semi-Supervised Semantic Segmentation of High-Resolution Remote Sensing Imagery

Semantic segmentation of high-resolution remote sensing imagery remains constrained by the high cost of pixel-level annotation. Semi-supervised learning can reduce this dependence by exploiting unlabeled images, but improving pseudo-label reliability often comes at the cost of re...

Deterioration mechanisms under combined low-amplitude thermal-fatigue and sulphate attack of concrete lining materials for underground thermal energy storage

Underground thermal energy storage (UTES) is an emerging decarbonisation technology for storing heat. However, the complex working environment with fluctuating temperature and potentially varying water chemistry may pose challenges to the lining materials, threatening the stabili...

Impact of Blockage Ratio on Smoke Control in High Heat Release Rate Tunnel Fires

Abstract Tunnel fires involving vehicle carriers transporting new-energy vehicles, heavy goods vehicles (HGVs), and tanker trucks are characterized by high heat release rate (HRR) and large blockage ratio (φ), posing significant challenges to tunnel smoke control. Previous studie...

Modeling and simulation of vulnerability cascading failures in engineering project organizations based on complex networks

Purpose Frequent construction safety accidents are often attributed to external risks, whereas the internal organizational vulnerability (OV) in engineering projects and their cascading failures are overlooked, causing a critical managerial blind spot. This study aims to systemat...

Experimental study on smoke propagation characteristics in dead-end tunnel networks during construction stage based on a small-scale model

Abstract This study investigates smoke propagation in Dead-end tunnel networks during the construction phase using a 1:30 small-scale physical model based on the Tianshan Victory Tunnel. The model consists of two main tunnels, a central service tunnel, and two cross passages, wit...

Stirring-assisted CO2 mineralization of a ternary solid-waste backfill material: Effects of temperature and CO2 pressure on carbon sequestration capacity and performance

The synergistic integration of coal mine backfill mining and CO 2 mineralization storage provides a new technical pathway for the resource utilization of bulk industrial solid wastes, stability control of mined-out voids, and long-term CO 2 fixation. In this study, a ternary soli...

Influence of ammonia blending on soot formation and nanostructure in laminar n-decane diffusion flames

Ammonia blending with hydrocarbon fuels has drawn increasing attention as a strategy for reducing soot emissions and mitigate combustion related particulate pollution. In this study, the influence of ammonia addition on soot formation and structural evolution was investigated in...

Gas content, geochemistry and accumulation of coalbed methane in Suzhou mining area of the Huaibei coalfield, China

Abstract Coalbed methane (CBM) resources in the Huaibei coalfield, particularly within the Suzhou mining area, have garnered significant attention due to their substantial energy potential. This study investigated the gas content, geochemical characteristics, and accumulation mec...

Thermal Lag Characteristics During the Cooling Process of Coal Spontaneous Combustion Under Different Nitrogen Concentrations

Coal spontaneous combustion poses a major hidden danger to coal‑mine safety production, and the inhibition effect of nitrogen injection is closely related to the temperature response of coal during the cooling stage. In this study, Xiaolongtan (XLT) lignite was selected as the ex...