Qiangling Yao
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View article: Structural Design Method for Narrow Coal Pillars in Gateway Protection: Framework and Field Case Study
Structural Design Method for Narrow Coal Pillars in Gateway Protection: Framework and Field Case Study Open
Coal pillars are important safety structures for maintaining the stability of underground coal mine roadways. To address both coal resource loss from wide pillars and the need for safer, more sustainable underground building structures, th…
View article: Influence of Tiered Cyclic Shear Stress on Shear Friction and Instability Behavior of Marble Specimens with the Fractures
Influence of Tiered Cyclic Shear Stress on Shear Friction and Instability Behavior of Marble Specimens with the Fractures Open
Fractured rock masses are susceptible to stress-induced disturbances, which can lead to severe geological disasters. In recent years, the shear deformation and failure characteristics of fractured rock under cyclic shear loading have becom…
View article: Evolution of Overlying Strata Bed Separation and Water Inrush Hazard Assessment in Fully Mechanized Longwall Top-Coal Caving of an Ultra-Thick Coal Seam
Evolution of Overlying Strata Bed Separation and Water Inrush Hazard Assessment in Fully Mechanized Longwall Top-Coal Caving of an Ultra-Thick Coal Seam Open
Bed-separation water hazards are a common and very harmful mining disaster in the mining areas of western China in recent years, which seriously threatens the safe mining of rich and thick coal seam resources in the West. The Yonglong mini…
View article: Failure Law of Sandstone and Identification of Premonitory Deterioration Information Based on Digital Image Correlation–Acoustic Emission Multi-Source Information Fusion
Failure Law of Sandstone and Identification of Premonitory Deterioration Information Based on Digital Image Correlation–Acoustic Emission Multi-Source Information Fusion Open
Efficiently extracting effective information from the massive experimental data from physical mechanics and accurately identifying the premonitory failure information from coal rock are key and difficult points of intelligent research on r…
View article: Characteristics of Creep and Permeability Changes in Coal Samples from Underground Water Storage Structures Under High Stresses
Characteristics of Creep and Permeability Changes in Coal Samples from Underground Water Storage Structures Under High Stresses Open
Underground reservoirs are a key technology for storing mine-impacted water resources, and the long-term stability of their coal pillar dams in high-stress environments is critical. The long-term safety of coal pillar dams in such reservoi…
View article: Numerical investigation of coal pillar damage mechanisms for various width-to-height ratios
Numerical investigation of coal pillar damage mechanisms for various width-to-height ratios Open
Pillar stability has garnered significant attention owing to the effects of pillars on coal resource recovery rate, coal pillar stability, and coal bump risk. This study examined the roadway stability control principles of conventional and…
View article: Biogenic Methane Production Using Exogenous Multiple Microorganisms from Different Coal Ranks in China
Biogenic Methane Production Using Exogenous Multiple Microorganisms from Different Coal Ranks in China Open
View article: Experimental Study on Acoustic Emission Characteristics of Fracture Propagation During Rock-Like Specimen Fracturing with Different Fluid Media
Experimental Study on Acoustic Emission Characteristics of Fracture Propagation During Rock-Like Specimen Fracturing with Different Fluid Media Open
View article: Acoustic emission responses and damage estimation of coal with carbon fiber-reinforced polymer confinement under uniaxial compression
Acoustic emission responses and damage estimation of coal with carbon fiber-reinforced polymer confinement under uniaxial compression Open
Fiber-reinforced polymer (FRP) wrapping is a potential technique for coal pillar reinforcement. In this study, an acoustic emission (AE) technique was employed to monitor coal specimens with carbon FRP (CFRP) jackets during uniaxial compre…
View article: A Prediction Approach Based on Clustering Reconstruction for Abnormal Mining Pressure of Longwall Face under Residual Coal Pillars
A Prediction Approach Based on Clustering Reconstruction for Abnormal Mining Pressure of Longwall Face under Residual Coal Pillars Open
In multi-coal seam mining, when the lower coal seam mining face passes over the goaf, residual coal pillars, and other geological anomaly areas of the overlying coal seam, abnormal mine pressure appears, and the hydraulic support monitorin…
View article: Enhancing Biomethan Generation of Lignite with Blue-Green Algae as an Additive
Enhancing Biomethan Generation of Lignite with Blue-Green Algae as an Additive Open
View article: Weak Feature Extraction Method for Bearing Faults Under Low-Speed Heavy-Duty Conditions
Weak Feature Extraction Method for Bearing Faults Under Low-Speed Heavy-Duty Conditions Open
Large electromechanical equipment typically operates under low-speed, heavy-duty conditions, significantly increasing the likelihood of bearing failures. The reduced speed diminishes the frequency of fault impacts per unit time, rendering …
View article: Research on Pore Structure Evolution and Mechanical Damage Characteristics of Coal Rock Under Dry-Wet Cycling for Underground Reservoirs
Research on Pore Structure Evolution and Mechanical Damage Characteristics of Coal Rock Under Dry-Wet Cycling for Underground Reservoirs Open
View article: Interaction between Groundwater and Rock Fractures under Stress and Seepage Based on Extractive Water Resource Utilisation
Interaction between Groundwater and Rock Fractures under Stress and Seepage Based on Extractive Water Resource Utilisation Open
In the fragile mining areas of western China, the contradiction between coal mining and water resource protection coexists prominently. Facing this issue, it is necessary to understand the dynamic relationship between mining-induced shear …
View article: Study of a damage constitutive model for water-bearing coal measures sedimentary rock with nonlinear deformation during compaction stage
Study of a damage constitutive model for water-bearing coal measures sedimentary rock with nonlinear deformation during compaction stage Open
The problem of repeated immersion-induced fatigue damage in engineering coal measures sedimentary rock, including coal-rock pillars, reservoir bank slopes, and water-rich tunnels at the boundary of coal mine underground reservoirs, has pro…
View article: Size Effects of Rough Fracture Seepage in Rocks of Different Scales
Size Effects of Rough Fracture Seepage in Rocks of Different Scales Open
Percolation experiments were conducted on coal samples with various fracture lengths and inclination angles under different stress conditions using a gravity-loaded rock percolation test device. The goals of these experiments are (1) to im…
View article: Advances in Coal and Water Co-Mining
Advances in Coal and Water Co-Mining Open
According to data from the BP Statistical Review of World Energy 2020 [...]
View article: Experimental Study on the Purification Mechanism of Mine Water by Coal Gangue
Experimental Study on the Purification Mechanism of Mine Water by Coal Gangue Open
Coal mining has caused groundwater pollution and loss. Using a mined area as a water storage space for storing and purifying mine water is a low-cost environmentally friendly mining method. In this study, static and dynamic adsorption expe…
View article: Strength Damage and Acoustic Emission Characteristics of Water-Bearing Coal Pillar Dam Samples from Shangwan Mine, China
Strength Damage and Acoustic Emission Characteristics of Water-Bearing Coal Pillar Dam Samples from Shangwan Mine, China Open
Long-term erosion and repeated scouring of water significantly affect the technical properties of coals, which are the essential elements that must be considered in evaluating an underground reservoir coal column dam’s standing sustainabil…
View article: Strength Degradation and Fracture Propagation of Repeatedly Immersed Artificial Dam Samples under Uniaxial Cyclic Loading–Unloading
Strength Degradation and Fracture Propagation of Repeatedly Immersed Artificial Dam Samples under Uniaxial Cyclic Loading–Unloading Open
The use of underground reservoirs is a critical technique for achieving sustainable coal and water resources in many ecologically fragile mines in western China. Concrete samples subject to repeated water immersion and cyclic loading-unloa…
View article: Mechanism and Application of Hydraulic Fracturing in the High-Level Thick and Hard Gangue Layer to Improve Top Coal Caving in Fully Mechanized Caving Mining of an Ultra-Thick Coal Seam
Mechanism and Application of Hydraulic Fracturing in the High-Level Thick and Hard Gangue Layer to Improve Top Coal Caving in Fully Mechanized Caving Mining of an Ultra-Thick Coal Seam Open
The thick and hard gangue layer has long been one of the key obstacles affecting the coal recovery rate in the fully mechanized top-coal caving mining of ultra-thick coal seams, and it is also one key factor restricting the development of …
View article: Instability Mechanism and Control Method of Surrounding Rock of Water-Rich Roadway Roof
Instability Mechanism and Control Method of Surrounding Rock of Water-Rich Roadway Roof Open
Surrounding rock properties and occurrence stability of a coal seam roof are prerequisites for ensuring the safe and efficient operation of mines. In this study, the mechanisms and control of weakened water-rich roadway roof slabs were inv…
View article: Experimental Study on the Evolution Law of Coal Mine Underground Reservoir Water Storage Space under the Disturbance and Water—Rock Interaction Effect
Experimental Study on the Evolution Law of Coal Mine Underground Reservoir Water Storage Space under the Disturbance and Water—Rock Interaction Effect Open
The void of the cracked rock mass of the goaf is the main water storage space of underground reservoirs, which is in a time-space dynamic evolution process. Before the formation of the underground reservoir, the water storage space was pri…
View article: Study on Energy Density Distribution and Mass Fractal of Deep Saturated Coal Samples under Uniaxial Stepwise High Stressed Loading and Unloading Path
Study on Energy Density Distribution and Mass Fractal of Deep Saturated Coal Samples under Uniaxial Stepwise High Stressed Loading and Unloading Path Open
The geostress in deep coal roadway is high and affected by mining frequently; under the influence of water-rock interaction, the bearing capacity of coal continues to deteriorate. Based on the characteristics of short water absorption proc…
View article: Mechanical Properties Damage, Fracture Evolution, and Constitutive Model of Siltstone under the Effect of Moisture Content
Mechanical Properties Damage, Fracture Evolution, and Constitutive Model of Siltstone under the Effect of Moisture Content Open
In order to study the weakening mechanism of mechanical properties and the evolution of fracture of water-bearing rocks, cylindrical standard siltstone samples with four moisture contents (0, 2.85, 3.87, and 4.25%) were prepared, and the m…
View article: Study on Damage Characteristics of Water-Bearing Coal Samples under Cyclic Loading–Unloading
Study on Damage Characteristics of Water-Bearing Coal Samples under Cyclic Loading–Unloading Open
For underground water reservoirs in coal mines, the complex water-rich environment and changing overburden stress can damage coal pillar dams. In this paper, the coal samples from coal seam 22 of Shangwan coal mine were taken as research o…
View article: Large Deformation Characteristics of Surrounding Rock and Support Technology of Shallow-Buried Soft Rock Roadway: A Case Study
Large Deformation Characteristics of Surrounding Rock and Support Technology of Shallow-Buried Soft Rock Roadway: A Case Study Open
The coal resources in the coal-rich area of western China are mostly located in the late diagenetic Cretaceous and Jurassic strata. In this paper, a study on the support of soft rock roadways was carried out in the background of the soft r…
View article: Experimental Study of Coal Sample Damage in Acidic Water Environments
Experimental Study of Coal Sample Damage in Acidic Water Environments Open
View article: Experimental Study on Damage and Failure of Coal-Pillar Dams in Coal Mine Underground Reservoir under Dynamic Load
Experimental Study on Damage and Failure of Coal-Pillar Dams in Coal Mine Underground Reservoir under Dynamic Load Open
The stability of coal-pillar dams in underground hydraulic engineering works is affected not only by long-term water erosion but also by dynamic loading induced, for example, by roof breaking or fault slipping. In this paper, the water abs…
View article: Evolution of Production and Transport Characteristics of Steeply-Dipping Ultra-Thick Coalbed Methane Reservoirs
Evolution of Production and Transport Characteristics of Steeply-Dipping Ultra-Thick Coalbed Methane Reservoirs Open
The large spatial variability of in-situ stress and initial reservoir pressure in steeply-dipping ultra-thick coalbed methane (UTCBM) reservoirs exert strong control on the initial distribution of stress-sensitive permeability. This result…