China University of Mining and Technology

Comprehensive analysis method of key risk factors in the subway operation accident by complex network and accident data

With the continuous expansion of subway systems in China, the operational systems of subway have become increasingly complex, leading to a rise in risk factors. In the event of an accident, these risks can significantly impact the safety and health of individuals, and pose a dire...

Observation-constrained clear-sky direct radiative forcing of black carbon containing aerosols reveals distinct radiative regimes across urban Asia

Black carbon (BC) aerosols exert a strong yet uncertain influence on the atmospheric energy balance, yet their radiative forcing estimates remain poorly constrained. Current top-down and bottom-up approaches remain limited in resolving how microphysical evolution and column prope...

Numerical simulation and sensitivity analysis of EGS thermal extraction based on THM-coupled model

The deep geothermal energy produced from Enhanced Geothermal System (EGS) has a great development prospect because of enormous potential and environmental friendliness. Deep geothermal energy development is a thermo-hydro-mechanical (THM) coupled process. Reservoir thermophysical...

A joint filtering method for in-seam seismic signals based on envelope fluctuation awareness and local IMF selection and reconstruction

Severe noise in underground coal mine seismic signals degrades first-break picking accuracy and subsequent data interpretation. To address this, a joint filtering method for in-seam seismic signals based on envelope fluctuation awareness and local Intrinsic Mode Function (IMF) se...

Physics-Informed Neural Networks for One-Dimensional Groundwater Contaminant Transport: A Synthetic Numerical Study of Prediction and Parameter Inversion

This study developed a physics-informed neural network (PINN) surrogate model for a one-dimensional synthetic groundwater contaminant-transport problem with adsorption, using Crank–Nicolson numerical solutions as the reference data. The effects of observation density and noise on...

Optimizing the rheology, microstructure and carbon sequestering performance of alkali activated material incorporating acetic acid modified fly ash

Abstract The integration of CO2 sequestration with alkali activated fly ash (FA) backfill slurry presents a promising strategy for simultaneous resource utilization of industrial waste and carbon capture. However, the efficiency of this process is often constrained by the inheren...

Geomechanical Characteristics of Cretaceous Ultra-Deep Sandstone Reservoirs in the Southern Keshen Area, Kuqa Depression: Implications for Exploration and Development

Significant progress has been made in exploring ultra-deep tight sandstone gas in the Tarim Basin, but sweet spot prediction remains challenging in the Keshen block of the Kuqa Depression. Based on integrated geological, experimental, and seismic data, this study characterizes th...

Low Cycle Fatigue Reliability of Dissimilar Weldments Made by ZG18CrNiMoA Cast Steel and Q355D Structural Steel

ABSTRACT Cast steel combines high strength and ductility, enabling flexible designs for heavily loaded structural components, yet the low‐cycle fatigue (LCF) performance of its welded component remains insufficiently understood. This study experimentally examines Q355D structural...

A multi-angle and polarization-based retrieval algorithm for aerosol layer height of smoke and dust

The vertical distribution of aerosols in the atmosphere governs their interactions with solar radiation and cloud processes, and is therefore a key factor influencing their climatic and environmental effects. Existing passive remote sensing methods for retrieving aerosol layer he...

A quantitative framework for evaluating overburden disturbance and surface subsidence induced by coal seam mining

Abstract Coal seam mining inevitably causes varying degrees of disturbance to the overlying strata and surface environment, necessitating the establishment of a scientific and systematic quantitative assessment framework for overburden disturbance. This study introduces a compreh...

Uniqueness of Adapted Solutions to Scalar BSDEs with Peano-Type Generators

Abstract. A backward stochastic differential equation (BSDE) with a Peano-type generator is known to have infinitely many solutions when the terminal value is vanishing, and it is shown to have possibly multiple solutions even when the terminal value is not vanishing but nonnegat...

Integrated field test and modeling study of CO2 geological storage with enhanced water recovery in Eastern Junggar Basin of Xinjiang

Xinjiang, a primary energy export hub in China, faces substantial carbon emission pressure and severe water scarcity, making CO 2 geological storage combined with enhanced water recovery (CO 2 -EWR) a win–win strategy to foster regional development and bolster national energy sec...

In Situ Gas Content Prediction of Deep Coal Seams Based on Logging in the Central Linxing–Shenfu Block

Abstract Deep coalbed methane, a key strategic resource for unconventional natural gas supply, is abundant in the Ordos Basin, China. However, limited systematic research on the state of gas occurrence and critical depth, combined with sparse gas content and in situ stress measur...

Endogenous instability: modeling behavioral, structural, and environmental drivers in the coal-power supply chain

The stability of the coal-power supply chain is vital to energy security but often undermined by overlooked behavioral and structural forces. This paper develops a discrete-time agent-based simulation model incorporating three sector-specific features: the structural feature (cap...

Multiscale damage evolution and chemo-mechanical constitutive modeling of acid-corroded sandstone

This study investigated time-dependent chemo-mechanical deterioration of fine-grained sandstone exposed to dilute sulfuric acid representing the proton-sulfate component of acid mine drainage. Specimens were corroded for 0–20 days and examined by X-ray diffraction, scanning elect...

Revegetation of semi-arid mine dumps: Arbuscular mycorrhizal fungi alleviate water competition in mixed planting systems

Water scarcity is the primary limiting factor for achieving sustainable revegetation and ecological restoration in arid and semi-arid mining areas. The application of arbuscular mycorrhizal fungi (AMF) and mixed planting has proven effective in promoting vegetation establishment...

Nonlinear instability and time-domain response of thin-walled UHPC towers under floating dynamic boundaries

The upscaling of floating offshore wind turbines (FOWTs) to 15-MW capacities requires ultra-flexible, thin-walled ultra-high performance concrete (UHPC) towers, posing critical challenges to nonlinear stability. Conventional decoupled design approaches fail to capture the coupled...

Influence of tunnel slope on hydrogen transport–dispersion characteristics and subsequent explosion consequences

To examine how tunnel slope affects hydrogen dispersion and explosion consequences after a leak, this study uses the CFD tool GASFLOW-MPI to simulate hydrogen leakage and dispersion in road tunnels with slopes of 0%, 9%, 18%, and 27%, and explosions in the 0% and 27% cases. Cloud...

Systematic Parameter‐Space Mapping Strategy for a Deep‐Subwavelength‐Thick Low‐Frequency Electromagnetic Metasurface Absorber

ABSTRACT Overcoming the intrinsic thickness–frequency trade‐off while simultaneously ensuring ultra‐thinness, wide‐angle absorption, and mechanical conformability remains a fundamental challenge in designing electromagnetic (EM) absorbers for next‐generation integrated systems. H...

Study on internal flow field and flotation performance of a vortex-driven flotation cell for fine minerals

The efficient recovery of fine minerals remains a major challenge in mineral processing. Flotation is one of the primary methods for fine particle separation, and from the perspective of flotation dynamics, turbulence intensification is essential. In this study, a novel vortex-dr...