Shanxi Coal Transportation and Sales Group (China)

Study on the fracture characteristics controlled by filling ratio in cut-and-fill mining

To mitigate surface subsidence and stope instability induced by an insufficient filling ratio in cut‑and‑fill mining, this study investigates overlying strata fracture characteristics and instability mechanisms by means of similar material simulation, PFC numerical modeling, and...

Mechanical Variability and Acoustic Emission Heterogeneity of Bedded Coal Under Uniaxial Compression

Bedding orientation affects coal strength and the interpretation of acoustic-emission (AE) signals, but detected activity and retrospective sequence descriptors have different monitoring meanings. Twelve coal specimens were tested under uniaxial compression, with three at each be...

Characteristics and Control of Severe Strata Behavior in Top-Coal Caving Gate Roads of Extra-Thick Coal Seams Beneath Goafs

In close-distance coal seam mining, the long-term static high-stress field induced by remnant pillars in the overlying goaf superimposes with the dynamic load disturbance from fully mechanized top-coal caving (TCC) in the underlying extra-thick seam. This superposition leads to s...

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...

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...

Effect of Preparation Method on the Structure of NiCe Catalysts and CO 2 Methanation Performance

CO 2 methanation not only reduces CO 2 emissions but also enables the efficient utilization of carbon resources. The development of highly efficient and stable catalysts is crucial for the application of this reaction. CeO 2 supported Ni catalyst (NiCe) showed high potential for...

Research on accident risk prediction and grade classification of horizontal curve sections of expressways based on SHAP-SVR model

Conventional prediction models used in expressway risk-assessment systems often provide insufficient support for identifying and classifying crash-prone road segments. This study develops an interpretable framework integrating SHAP with support vector regression (SHAP–SVR) to pre...

Seasonal variations of soil water vapor distribution transport and phase transition in the loess unsaturated zone from fixed volume monitoring

Abstract Water vapor is a crucial yet often overlooked water resource in the soil’s unsaturated zone of arid and semi-arid regions. Understanding water vapor behavior in the soil’s unsaturated zone is crucial for research on soil and energy balance, vegetation water stress, and w...

Analysis of mid-infrared spectral characteristics and recognition models of coal with different particle sizes

As a core energy source, the accurate identification of coal particle size is a critical part in the quality control of raw coal mining, separation and processing, storage and transportation, and quality upgrading. The differences in physical and chemical properties of coal with...