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Organic petrographic and mineralogical composition of the No. 6 coal seam of the Soutpansberg Coalfield, South Africa: Insights into paleovegetation and depositional environment
This study investigates the paleodepositional conditions of the No. 6 Seam of the Madzaringwe Formation in Makhado and Voorburg south area of the...
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Mechanical properties and energy evolutions of burst-prone coal samples with holes and fillings
During the mining process of impact-prone coal seams, drilling pressure relief can reduce the impact propensity of the coal seam, but it also reduces...
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Research advances in enhanced coal seam gas extraction by controllable shock wave fracturing
With the continuous increase of mining in depth, the gas extraction faces the challenges of low permeability, great ground stress, high temperature...
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Influences of clean fracturing fluid viscosity and horizontal in-situ stress difference on hydraulic fracture propagation and morphology in coal seam
The viscosity of fracturing fluid and in-situ stress difference are the two important factors that affect the hydraulic fracturing pressure and...
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Synergistic CO2 mineralization using coal fly ash and red mud as a composite system
CO 2 mineralization plays a critical role in the storage and utilization of CO 2 . Coal fly ash (CFA) and red mud (RM) are widely utilized as CO 2 ...
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Mechanical properties and acoustic emission characteristics of soft rock with different water contents under dynamic disturbance
Uniaxial compression tests and cyclic loading acoustic emission tests were conducted on 20%, 40%, 60%, 80%, dry and saturated muddy sandstone by...
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Chemical loo** reforming of the micromolecular component from biomass pyrolysis via Fe2O3@SBA-16
To solve the problems of low gasification efficiency and high tar content caused by solid–solid contact between biomass and oxygen carrier in...
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Effect of long reaction distance on gas composition from organic-rich shale pyrolysis under high-temperature steam environment
When high-temperature steam is used as a medium to pyrolyze organic-rich shale, water steam not only acts as heat transfer but also participates in...
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Effects of dust controls on respirable coal mine dust composition and particle sizes: case studies on auxiliary scrubbers and canopy air curtain
Control of dust in underground coal mines is critical for mitigating both safety and health hazards. For decades, the National Institute of...
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A critical review on direct catalytic hydrogasification of coal into CH4: catalysis process configurations, evaluations, and prospects
Coal catalytic hydrogasification (CCHG) is a straightforward approach for producing CH 4 , which shows advantages over the mature coal-to-CH 4 ...
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Understanding poromechanical response of a biogenic coalbed methane reservoir
Biogenic coalbed methane (BCBM) reservoirs aim to produce methane from in situ coal deposits following microbial conversion of coal. Success of BCBM...
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Advancing respirable coal mine dust source apportionment: a preliminary laboratory exploration of optical microscopy as a novel monitoring tool
Exposure to respirable coal mine dust (RCMD) can cause chronic and debilitating lung diseases. Real-time monitoring capabilities are sought which can...
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Development and technology status of energy storage in depleted gas reservoirs
Utilizing energy storage in depleted oil and gas reservoirs can improve productivity while reducing power costs and is one of the best ways to...
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Theoretical analysis of hydrogen solubility in direct coal liquefaction solvents
The cyclic hydrogenation technology in a direct coal liquefaction process relies on the dissolved hydrogen of the solvent or oil participating in the...
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Residual subsidence time series model in mountain area caused by underground mining based on GNSS online monitoring
The residual subsidence caused by underground mining in mountain area has a long subsidence duration time and great potential harm, which seriously...
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Uncertainties of landslide susceptibility prediction: influences of different study area scales and map** unit scales
AbstractThis study aims to investigate the effects of different map** unit scales and study area scales on the uncertainty rules of landslide...
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Theoretical analysis and engineering application of controllable shock wave technology for enhancing coalbed methane in soft and low-permeability coal seams
Coalbed methane (CBM) is a significant factor in triggering coal and gas outburst disaster, while also serving as a clean fuel. With the increasing...
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A mini review on the separation of Al, Fe and Ti elements from coal fly ash leachate
The electricity demand is increasing rapidly with the development of society and technology. Coal-fired thermal power plants have become one of the...
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Process engineering of demineralisation of moderate to high ash Indian coals through NaOH-HCl leaching and HF leaching
Chemical leaching of coals would be required to produce cleaner coals for some special applications where physical beneficiation may not be effective...
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Hydrodynamic resistance of pore–throat structures and its effect on shale oil apparent permeability
Oil transport is greatly affected by heterogeneous pore–throat structures present in shale. It is therefore very important to accurately characterize...
