Results 61 to 70 of about 538,157 (249)
Meikuang Anquan, 2020 Various particle sizes and its explosive residues were tested using 20 L spherical explosive device, and the effect of particle size on the explosive conditions and explosive products of coal dust and solid residues was analyzed under different coal ...
LIU Zhentang, ZHOU Xifang, LI Xiaoliang, HONG Sen, LIN Song, QIAN Jifa
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Dynamic cracking properties and generating conditions of coal under rapid gas release
Deep Underground Science and Engineering, EarlyView.Gas release tests revealed that crack initiation and propagation are jointly controlled by initial crack length, residual strength, and gas release velocity. A new outburst risk coefficient was thus developed from a fracture mechanics perspective, offering a novel predictive approach.
Bing Zhang +6 more
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AtmosphereShearer drum cutting of coal seams generates over half of the coal dust in coal mines, while relevant studies focus more on micron-sized dust and much less on nano- to sub-micron-sized coal dust.
Hui Liu +9 more
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Assessing the effectiveness of inertization of brown coal dust with limestone rock dust [PDF]
Podzemni Radovi, 2017 An assessment of the effectiveness of inertization of coal dust with inert dust is an important step in prevention of coal dust explosions. According to the tests on their explosive properties, coal dusts from all the mines in Bosnia and Herzegovina ...
Marković Jelena +2 more
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Deep Underground Science and Engineering, EarlyView.This review synthesizes advances in predicting miners' vital signs by integrating environmental monitoring (dust, temperature, and gas) with physiological data. It highlights multi‐source data fusion techniques and early‐warning models for enhanced occupational safety in underground coal mines.
Junji Zhu +4 more
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Study on airflow-coal dust dispersion pattern and control technology in fully mechanized mining face
Gong-kuang zidonghuaThe shearer in a fully mechanized mining face generates significant turbulent airflow during coal cutting, resulting in changes in airflow velocity in the mining area and causing the lateral dispersion of coal dust particles toward pavements.
GAO Cheng +3 more
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Deep Underground Science and Engineering, EarlyView.This study proposes an eco‐friendly coal permeability enhancement technique by utilizing mine waste gangue as an abrasive in high‐pressure water jets. Integrating erosion experiments with smoothed particle hydrodynamics‐finite element method coupled simulations, the research study elucidates the flow field dynamics and a nonlinear solid–liquid ...
Qingxiang Wang +4 more
wiley +1 more source
Geophysical Monograph Series, Page 263-304., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jessica H. Whiteside +3 more
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EcoEnergy, EarlyView.This review summarizes a descriptor‐guided framework for linking theoretical calculations, in situ/operando characterization, synthesis regulation, and application screening in functional materials. Emphasis is placed on dynamic structure–property relationships that enable low‐cost material design with enhanced activity, stability, and environmental ...
Yanyu Jin +9 more
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Coal dust residual hydrocarbons as a factor of fire and explosion risks increasing in coal mines
Известия высших учебных заведений: Геология и разведка, 2016 The residual hydrocarbons of coal dust and coals of Osinnikovskaya mine (Kuzbass) which are allocated from the dust and coal, as well as their fractions by the size, are investigated at thermal influence (under the temperatures of 150-250 °С).
V. S. Lebedev, O. V. Skopintseva
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