Ping Chang
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View article: Laboratory Measurement and Analysis of Permeability of Sandstone Reservoir Microstructure Based on Fractal Geometry Theory for Porous Media
Laboratory Measurement and Analysis of Permeability of Sandstone Reservoir Microstructure Based on Fractal Geometry Theory for Porous Media Open
The pore complexity and heterogeneity in porous media display obvious fractal characteristics, which can be characterized by the fractal dimension for the pore tortuosity (DT) and the fractal dimension for the pore size (Df). Corresponding…
View article: Experimental study on the effect of biopolymer suppressant application rate on dust suppression efficiency for mine tailings
Experimental study on the effect of biopolymer suppressant application rate on dust suppression efficiency for mine tailings Open
Dust emission is a serious environmental issue in mine tailing management. The most commonly used method for dust control is water spraying. However, the efficiency of pure water is relatively low due to the high evaporation rate, especial…
View article: Investigation of microstructural damage evolution in high-rank coal under supercritical CO2 pulsating action
Investigation of microstructural damage evolution in high-rank coal under supercritical CO2 pulsating action Open
To characterize the microcomponents and pore structure of high-rank coals under supercritical CO2 (SC-CO2) pulsation, the effects of SC-CO2 pulsation on the mineral composition, organic functional groups, pore structure and pore fractal ch…
View article: A new simulated annealing algorithm for simultaneous open-pit and waste dump scheduling in mining complexes
A new simulated annealing algorithm for simultaneous open-pit and waste dump scheduling in mining complexes Open
Production scheduling models for open-pit mining complexes determine the optimal sequence for extracting mining blocks while adhering to technical and operational constraints. Although various mathematical models are available in the liter…
View article: Fractal Characterization of a Multi-Scale Pore Structure in Ultra-Deep Coal Seams
Fractal Characterization of a Multi-Scale Pore Structure in Ultra-Deep Coal Seams Open
The pore–fracture structure of ultra-deep coal is critical for evaluating resource potential and guiding the exploration and development of deep coalbed methane (CBM). In this study, a coal sample was obtained from the Gaogu-4 well at a de…
View article: Corporate Manslaughter in the UK: Lessons for Australia
Corporate Manslaughter in the UK: Lessons for Australia Open
Prior to, and since the passage of the Corporate Manslaughter and Corporate Homicide Act 2008 (CMCHA) in the United Kingdom (UK), prosecutions for serious workplace health and safety offences have been mostly underwhelming. Australia has n…
View article: Research on an Ultrafine Water Mist Partition Multistage Dust Suppression System in Underground Excavation Tunnel
Research on an Ultrafine Water Mist Partition Multistage Dust Suppression System in Underground Excavation Tunnel Open
A large amount of coal dust is produced in coal mine excavation, which has a serious impact on the working environment and health of underground workers. To address this problem, the spatial and temporal evolution process of coal dust in t…
View article: The Post-Harmonisation Health and Safety Challenges of Construction Industry Managers
The Post-Harmonisation Health and Safety Challenges of Construction Industry Managers Open
To minimise the occurrence of injuries, illnesses and deaths due to work-related causes, it is important to have effective workplace health safety legislation that is known and used. The introduction of more stringent workplace health and …
View article: Research on the evolution of microstructurale damage of high-rank coal under supercritical CO2 pulsating action
Research on the evolution of microstructurale damage of high-rank coal under supercritical CO2 pulsating action Open
To characterize the microcomponents and pore structure of high-rank coals under supercritical CO 2 pulsation, the effects of supercritical CO 2 pulsation on the mineral composition, organic functional groups, pore structure and pore fracta…
View article: Fractal Strategy for Improving Characterization of N2 Adsorption–Desorption in Mesopores
Fractal Strategy for Improving Characterization of N2 Adsorption–Desorption in Mesopores Open
The current studies primarily analyze the heterogeneity and complexity of mesopore structures based on low-temperature nitrogen (N2) adsorption curves and the Frenkel–Halsey–Hill (FHH) fractal model. However, these studies ignore the fact …
View article: Fractal Characterization on Three-Dimensional Tortuosity of Fault Tectonic
Fractal Characterization on Three-Dimensional Tortuosity of Fault Tectonic Open
Faults, as a kind of fracture tectonics, play a role in reservoir closure or provide oil and gas transportation channels. The accurate understanding of the distribution characteristics of faults is significant for oil and gas exploration. …
View article: A Fractal Adsorption Model on Methane in Coal with Temperature Effect Dependence
A Fractal Adsorption Model on Methane in Coal with Temperature Effect Dependence Open
The traditional Langmuir equation displays drawback in accurately characterizing the methane adsorption behavior in coal, due to it assuming the uniform surface of coal pores. Additionally, the decay law of gas adsorption capacity with an …
View article: Targeted Stimulation of Micropores by CS2 Extraction on Molecular of Coal
Targeted Stimulation of Micropores by CS2 Extraction on Molecular of Coal Open
The targeted stimulation of micropores based on the transformation of coal’s molecular structure is proposed due to the chemical properties and difficult-to-transform properties of micropores. Carbon disulfide (CS2) extraction is used as a…
View article: Fractal Evolution Characteristics on the Three-Dimensional Fractures in Coal Induced by CO2 Phase Transition Fracturing
Fractal Evolution Characteristics on the Three-Dimensional Fractures in Coal Induced by CO2 Phase Transition Fracturing Open
To analyze the transformed effect of three-dimensional (3D) fracture in coal by CO2 phase transition fracturing (CO2-PTF), the CO2-PTF experiment under a fracturing pressure of 185 MPa was carried out. Computed Tomography (CT) scanning and…
View article: A novel model for sustainable production scheduling of an open-pit mining complex considering waste encapsulation
A novel model for sustainable production scheduling of an open-pit mining complex considering waste encapsulation Open
This work presents a novel mixed integer programming model for simultaneous optimisation of ore production and waste dumping schedule for an open-pit mining complex. The model maximises net present value and generates an optimal flow of ma…
View article: Research on the axial compression performance of coral concrete-filled aluminum alloy tube columns
Research on the axial compression performance of coral concrete-filled aluminum alloy tube columns Open
The compression of coral concrete-filled aluminum alloy tube columns is a novel type of laterally restrained concrete element, with axial compressive load being the primary load type sustained by the laterally restrained concrete elements …
View article: Research and development of vortex suction dedusting device based on multi-factor horizontal response surface method
Research and development of vortex suction dedusting device based on multi-factor horizontal response surface method Open
The excavation of coal mines generates substantial dust, posing environmental and health risks for underground coal mine workers. To address the dust issue, a novel Vortex Air Flow Negative Pressure Entrainment Dedusting Device was develop…
View article: The influence of surfactants' ionicity on the performance of coal dust suppression
The influence of surfactants' ionicity on the performance of coal dust suppression Open
Coal dust is a significant health hazard for coal workers, as prolonged inhalation can lead to severe diseases such as Coal Workers' Pneumoconiosis. Water spray with surfactants is commonly used as a pre-control strategy to control coal du…
View article: Experimental study of surfactants’ performance for suppressing coal dust with respirable size
Experimental study of surfactants’ performance for suppressing coal dust with respirable size Open
Long-term exposure to coal dust can lead to severe health problems in coal workers, including Coal Workers' Pneumoconiosis, making effective control of coal dust in underground mines essential. Water spraying is a widely used method for co…
View article: Optimum Auxiliary Fan Location to Control Air Recirculation
Optimum Auxiliary Fan Location to Control Air Recirculation Open
This paper presents the optimum auxiliary fan(s) location to control air recirculation in dead-end workings where diesel-powered vehicles operate. Investigations were conducted with various secondary fan locations from the dead-end crosscu…
View article: Research on the gas migration trend and mechanism of the transition flow regime in coal based on MRT-LBM simulation
Research on the gas migration trend and mechanism of the transition flow regime in coal based on MRT-LBM simulation Open
In order to reveal the process and mechanism of gas flow in a low-permeability coal seam, a new multiple-relaxation-time lattice Boltzmann method (MRT-LBM) model of gas migration in coal micro/nanopores based on Langmuir monolayer adsorpti…
View article: Reactive Voltage Control Strategy for PMSG-Based Wind Farm Considering Reactive Power Adequacy and Terminal Voltage Balance
Reactive Voltage Control Strategy for PMSG-Based Wind Farm Considering Reactive Power Adequacy and Terminal Voltage Balance Open
To improve the ability of the power system to accommodate high penetration wind power, wind turbines (WTs) need to realize the mode transformation from grid-following to grid-forming, thus actively participating in the voltage regulation o…