Shanxi Jincheng Anthracite Mining 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...

Fine Assessment of Water Abundance and Water Inflow Potential in Coal-Bearing Strata Based on Water Storage Space Microelements

Abstract Mine water inflow is one of the primary hazards threatening the safety of coal-mining production. Groundwater in coal-bearing strata serves as the direct water-filling source for coal mining, and its water abundance significantly impacts the intensity of the mine water i...

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...

Rotational stability and visual outcomes of toric implantable collamer lenses in eyes with horizontal and non-horizontal implanting orientation: an observational study

PURPOSE: To evaluate the short-term rotational stability and visual outcomes of the toric intraocular collamer lens (TICL) with horizontal and non-horizontal implantation orientation based on the Callisto eye system. METHODS: This observational study analyzed 77 eyes from 51 pati...

Diagnostic challenges in primary aldosteronism evaluation and finerenone use

Primary aldosteronism (PA) is a common but frequently ignored cause of hypertension, particularly in patients with normal serum potassium and aldosterone levels. We report the case of a 70-year-old Han Chinese man with a 20-year history of hypertension who presented with normokal...

Prediction method for the formation drillability based on improved Bi-LSTM

Rock drillability serves as a comprehensive parameter reflecting the difficulty of rock fragmentation during drilling. To address the challenges, this study introduces a Bi-LSTM and Stacked Autoencoder (SAE) hybrid model for predicting the drillability of deep undrilled formation...

Gel Foam Loaded with Oxygen-Consuming Bacterial Communities for the Coupled Inhibition of Lignite Spontaneous Combustion

Abstract To improve the durability of microbial inhibition of coal spontaneous combustion, oxygen-consuming bacterial communities from mining environments were immobilized in gel foam to construct a bioactive carrier for lignite protection. Two previously screened aerobic communi...

Numerical Investigation of Competitive Methane Transport in Multiborehole Coal Seam Drainage and Its Implications for Borehole Layout Design

Abstract Methane drainage efficiency in coal seams is significantly affected by borehole arrangement, as overlapping pressure sinks in multiborehole systems can redistribute gas migration pathways and reduce the effective performance of individual boreholes. To quantify this inte...

Preparation and Characterization of Composite Phase Change Materials Based on Enhanced Thermal Conductivity of Silicon Carbide–Carbon Nanotubes

A novel composite phase change material (CPCM) was developed by combining carbonized melamine foam (CMF) with chemically bonded silicon carbide–carbon nanotubes (SiC–CNTs) hybrid network. CMF is prepared through the carbonization process, and a graphitized layer is formed on the...