Baisheng Nie

• PhD
• Professor (Full) at Chongqing University

Purpose Hazard management in coal mines is a critical pathway to ensuring the safe production of coal enterprises. Existing research primarily focuses on adjusting incentive mechanisms and enhancing punitive measures to encourage employees to engage in hazard identification, while comparative studies on the factors driving these behaviors and their...

Coal mine hazards are a significant contributor to accidents, highlighting the need for effective hazard control in safety management and accident prevention. This study presents a novel methodology combining Latent Dirichlet Allocation (LDA) and DEMATEL-ISM to identify key factors contributing to coal mine hazards, complemented by a case study ana...

To investigate the impact of stress variations on coal permeability during mining, this study combines theoretical analysis with experimental research to reveal the permeability variation patterns under three mining-induced stress conditions. The results indicate that coal permeability exhibits a three-stage variation characteristic under different...

Gas outburst is a common underground geological hazard that poses a serious threat to coal mine safety production. To elucidate the influence of methane release behavior and energy evolution on gas outburst in coal, the microscopic pore parameters and macroscopic methane release law of six coal rank samples were studied by full-scale pore test, Sca...

The quality and efficiency of coalbed methane (CBM) drainage are critical for the safe production of coal mining enterprises in China. Air leakage should be prevented during CBM drainage because it can reduce drainage concentration and induce produce accidents such as coal seam spontaneous combustion. However, existing theoretical models for CBM dr...

To enhance the safety of coal mining operations and improve the efficiency of gas extraction, hydraulic flushing technology has been widely used in low permeability coal seams. This study aims to investigate the mechanism of hydraulic flushing by conducting experiments focusing on four aspects: sample strength, punching pressure, punching position...

To assess the accuracy of commonly used 3D reconstruction techniques for coal samples and provide a foundation for examining the coal’s internal microstructure, as well as its mechanical and seepage properties, this study focuses on samples from the Yuwu and Yuecheng Mines. X-ray CT scanning was employed to acquire CT slices of the coal samples, wh...

Coalbed methane (CBM) recovery is attracting global attention due to its huge reserve and low carbon burning benefits for the environment. Fully understanding the complex structure of coal and its transport properties is crucial for CBM development. This study describes the implementation of mercury intrusion and μ-CT techniques for quantitative an...

Research on the effects of acidic and alkaline solutions and stress on coal’s pore structure has traditionally focused on larger scales, leaving a gap in understanding nanoscale impacts. This study utilized a self-developed small-angle X-ray scattering (SAXS) miniature loading system and in situ synchrotron SAXS to investigate nanopore evolution un...

This study investigates the suppression effects of heptafluoropropane (CF 3 CHFCF 3)-CO 2 mixtures on the pre-mixed hydrogen-air explosion. The experiments are conducted in a stainless-steel duct system with the concentrations of CF 3 CHFCF 3 and CO 2 ranging from 1% to 4% and 10%-15% respectively. The hydrogen-air equivalent ratio, Φ is varied fro...

Hydrogen as a renewable clean energy raises industrial safety and environmental issues. Studying the mechanism of hydrogen explosion in confined space is significant for guiding the risk assessment and efficient use of hydrogen energy. This paper used a 20 L explosion chamber to explore the effect of initial concentration changes on the hydrogen ex...

Hydrogen energy is widely recognized as a promising alternative to fossil fuels, while hydrogen explosions can present a considerable industrial hazard due to their low ignition energy and wide explosion limit. This study investigates the inhibition mechanisms of hydrogen-air explosion by heptafluoropropane (CF3CHFCF3, 0 - 6%) and CO2 (0 - 20%) mix...

High voltage electric pulse (HVEP) was used to perform concrete cracking experiments to demonstrate the feasibility of this technique for cracking hard objects. The results of the study show that HVEP fracturing technology has great potential for application. This article uses a high-speed camera to record the crack expansion process, and analyze t...

The global shift toward cleaner energy sources, driven by carbon neutrality goals and climate change urgency, faces a paradoxical rise in coal consumption despite efforts to expand alternative energies. Economic disparities drive reliance on coal, particularly in underdeveloped regions where affordability and accessibility dictate energy choices. T...

Water commonly occurs in coal reservoirs, and it can block the gas flow channels. This has a significant influence on methane transportation within coal. To reveal the gas emission law of water-containing coal across the rank range, three typical coal samples with different coal ranks covering lignite to anthracite were selected in this work. The i...

The coal’s mechanical properties have a significant influence on mining safety and the mine environment. Preparing a standard sample and conducting repeat mechanical testing are challenging because the coal is primarily soft, fragmented, and rich in developed fractures. This study used nanoindentation technology, combined with X-ray diffraction, sm...

The mechanical behavior of the coal body acted upon by varying pressure is very important for the stability analysis of the actual mining face. Based on the designed stress loading path, uniaxial compression tests are performed on coal samples of different coal steps in the presence of various loading rates. The main goal of this investigation is t...

To identify effective wetting additives for extinguishing wood fires, this study employed both simulation and experimental approaches to investigate the wetting and adsorption mechanisms of various additives on wood surfaces. Using molecular mechanics, a simulation model was developed to examine the adsorption of cellulose-additive systems in a wat...

An experimental apparatus was custom-designed to scrutinize the evolution of temperature and methane pressure during the freezing process in both soft and hard coal samples. Additionally, a thermal–hydrological–mechanical coupling theoretical model was developed, and temperature and methane pressure evolutions were simulated using COMSOL software....

The use of metal−organic frameworks (MOFs) has emerged as a promising solution for sequestering toxic hydrogen sulfide. To find the best conditions for improving the hydrogen sulfide adsorption performance, we conducted grand canonical Monte Carlo simulations based on high-throughput screening of 20 selected materials. Furthermore, we used lithium-...

Hydrophobic surfaces and polymer additives are both desirable for effectively reducing drag when carrying fluids, and the synergy of these two has naturally attracted a great deal of attention. The interaction between a polyurethane surface with different raw material compositions and drag-reducing polymers such as poly-acrylamide (PAM), polyethyle...

Hydrogen sulfide (H2S) is a highly toxic, and flammable acid gas that is widely present in confined spaces. However, conventional adsorption materials are inefficient and have poor reuse properties. Metal‐organic frameworks (MOFs) show potential viability as novel materials in gas adsorption. Herein, mainstream MOFs were investigated based on molec...

In order to study the pore alteration and permeability of coal affected by acid liquor, samples were collected from the Yuwu coal mine in the Qinshui basin, Shanxi Province, and taken as the study object. Hydrochloric acid (HCl) with a 10% volume concentration was used to treat these coal samples. The pore structure characteristics and gas permeabi...

The experimental study on the variation law of coal fracture and stress was carried out in the laboratory and engineering fields, respectively. A multiparameter monitoring system including electromagnetic radiation and a high‐speed camera was built, and three stress paths, uniaxial compression, cyclic loading, and graded loading, were used to monit...

Well-developed pores and cracks in coal reservoirs are the main venues for gas storage and migration. To investigate the multi-scale pore fractal characteristics, six coal samples of different rankings were studied using high-pressure mercury injection (HPMI), low-pressure nitrogen adsorption (LPGA-N2), and scanning electron microscopy (SEM) test m...

Sequestration of CO2 in the geological formations has great potential to reduce greenhouse gas emissions, and the induced mechanical stability of coal reservoirs is deeply concerned with the long-term safety of CO2 geological storage. After injection, it is likely that CO2 is stored in the form of supercritical state in coal reservoirs. To date, ou...

Fatigue is a complex physiological phenomenon that reflects worsening physical function and can lead to poor work performance, safety and health conditions. The research targets to obtain the degree of eye fatigue of college students in fixed sitting posture. An eye movement detection method was proposed in this paper. Using the wireless transmissi...

Ultrasonic physical stimulation is a promising approach of coalbed methane enhancement recovery. This study is devoted to quantitatively characterizing the damage of multi-scale pores and fractures in coal induced by power ultrasonic stimulation using the gas sorption and CT image-based 3D reconstruction. The gas sorption tests show that the ultras...

Investigating the variation pattern of indicator gases produced during the spontaneous combustion and oxidation of coal is of crucial value in achieving early warning of coal mine fires and ensuring coal mine safety. In this work, we first carried out a programmed heating experiment on coal and mainly analysed the trend of oxidation products, alkan...

Water is widely distributed in coal under the in-situ reservoir conditions, which has a great impact on gas adsorption and migration within coal. In this work, methane sorption behavior on tectonic coal under the influence of moisture was quantitatively evaluated using the combination of high-pressure volumetric method, X-ray photoelectron spectrom...

The microstructure of coal, such as matrix morphology, pore structure and carbon structure, is of great significance to the resource enrichment in coal and the study of graphitization. In this work, atomic force microscopy (AFM) and high-resolution transmission electron microscopy (HRTEM) were employed to characterize microstructure of cores from t...

Ceramic foams are potential materials for explosion suppression due to their complex three-dimensional porous structure and strong wave absorption capabilities. The ability of ceramic foams to suppress methane/air explosion was investigated in a large-scale horizontal pipe. The factors of pore size and thickness of the ceramic foam were taken into...

The gas flow pattern of the coal seam is closely related to the pore structure of the coal. In order to better understand the pore distribution in different coal samples, the pore distribution and fractal dimension characteristics of five coal samples with different degrees of metamorphism were investigated and analyzed by using the low-temperature...

Coal spontaneous combustion (CSC) is a major disaster threatening coal mine safety; therefore, the investigation of coal spontaneous combustion and oxidation characteristics has been a hot topic in the long term. In this paper, the experimental temperature programmed system is used to carry out the simulation experiment of coal spontaneous combusti...

Understanding the oxidation characteristics of coal spontaneous combustion and the variation of characteristic parameters is of great importance to further clarify the intrinsic mechanism of coal spontaneous combustion and to ensure safe production in coal mines. In this paper, the oxidation process of coal samples was tested at four oxygen concent...

Banana peel powder (BPP) was used to prepare poly(lactic acid) (PLA) bio-based composites and the flame retardancy was enhanced by introducing silica-gel microencapsulated ammonium polyphosphate (MCAPP). The results showed that the limiting oxygen index (LOI) of PLA containing 15 wt % BPP was 22.1% and just passed the UL-94 V-2 rate. Moreover, with...

Exposure to mining-induced particulate matter (PM) including coal dust and diesel particulate matter (DPM) causes severe respiratory diseases such as coal workers’ pneumoconiosis (CWP) and lung cancer. Limited spatiotemporal resolution of current PM monitors causes miners to be exposed to unknown PM concentrations, with increased overexposure risk....

The quantitative evaluation of pore-fractures which links to methane storage space and transportation channels is of great significance for underground gas extraction and coalbed methane development. This study is aimed at revealing the surface roughness and structure irregularity of typical bituminous coal samples using the combination of SEM, box...

Injection of CO2 into coal seams is a critical path to achieve the goals of enhanced coalbed methane recovery and carbon sequestration. Under the in-situ reservoir conditions, CO2 is likely to be stored in the form of supercritical state. Up to date, little understanding is reported regarding the influence of supercritical CO2 (SC-CO2) saturation t...

CO2 injection into coal seams can not only enhance the recovery of coalbed methane, but also achieve the goal of CO2 geological sequestration, reducing greenhouse gas emissions. CO2 is likely to be stored in the form of supercritical state, when the burial depth of coal seams exceeds 800 m. However, the existing knowledge is still lacking regarding...

The problem of low efficiency of coal mine methane utilization is caused by the concentration of methane of less than 10%, or a concentration that varies dramatically directly emitted into the atmosphere. This work deals with the concept of a co-production system that blends lean methane and biogas to produce electric energy. It is recommended to a...

Mining-induced seismic events greatly threaten safety of underground workers and studying major seismic events would help mitigate hazards in deep mines. Characterizing the aftershock sequence of major events can contribute to developing a reentry protocol after major events occur at mines. This study uses two major events and their aftershock sequ...

Gas desorption property of coal is closely related to pore distribution, and the accurate characterization of pore structures is of great significance for gas flow in coal seams. In this work, nine typical coking coal samples were collected in Xishan coalfield, North China. Both qualitative and quantitative analysis were made on these samples regar...

Fully utilizing the energy generated by the explosion of pulverized coal will contribute to realize the clean and efficient exploitation of coal resources. The pulverized coal explosion characteristics will be a far-reaching and important task to explore. In this paper, ten kinds of low-quality coals such as high sulfur, high ash, and low metamorph...