Results 41 to 50 of about 1,100 (178)
Floor failure depth of upper coal seam during close coal seams mining and its novel detection method
Energy Exploration & Exploitation, 2018 The primary problem needed to be solved in mining close coal seams is to understand quantitatively the floor failure depth of the upper coal seam. In this study, according to the mining and geological conditions of close coal seams (#10 and #11 coal ...
Wei Zhang +5 more
doaj +1 more source
Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement
Geophysical Monograph Series, Page 27-82., 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.
Jennifer Kasbohm +2 more
wiley +2 more sources
Determining reasonable position of roadway for close coal seam
矿业科学学报, 2022 To study the layout of the short-distance thick underlying coal seam stopping roadway in Yanzishan Mine, a mechanical model of the remaining coal pillars in 4216 and 4218 of No.
He Fulian +5 more
doaj +1 more source
Shock and Vibration, 2022 To solve the problem of strong ground pressure behaviour under a residual coal pillar in the overlying goaf of a close-distance coal seam, this paper proposes the technology of weakening and relieving the residual coal pillar in the overlying goaf by a ...
Shang Yang +5 more
doaj +1 more source
Energies, 2022 Aiming at the problem that it is difficult to achieve accurate laying of model and precise excavation of roadways in special surrounding rock structure roadway according to conventional physical similarity simulation, which reduces the reliability of ...
Pengze Liu +9 more
doaj +1 more source
An Improved Composite Fly Ash Gel to Extinguish Underground Coal Fire in Close Distance Coal Seams: A Case Study [PDF]
Advances in Materials Science and Engineering, 2020 Fire extinguishing with the superior performance of fly ash composite colloid material is a cost‐effective colloid fire prevention technology. In this paper, a new powder additive (suspending agent (XK‐XJ) and gelling agent) was developed for the existing fire extinguishing technology of fly ash compound colloid.
Jun Guo +4 more
openaire +2 more sources
Biological Reviews, EarlyView.ABSTRACT Recent methodological development in phylogenetic inference has focused predominantly on molecular data. However, renewed interest in other data types, particularly morphological data, has followed from the increased recognition of the power of total evidence and tip‐dating approaches, including fossil data, for inference of time‐scaled trees ...
Melanie J. Hopkins +9 more
wiley +1 more source
Meikuang Anquan, 2022 The coal seam group in the outburst mine has the characteristics of mutual influence in the mining process, the goaf is connected, there are many air leakage places, and the fire prevention work is difficult. In order to accurately predict the coal spontaneous combustion process of the coal seam group near outburst mines, taking Guizhou Fa’er Coal Mine
DONG Xiaoming +4 more
openaire +1 more source
Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective
Carbon Energy, EarlyView.ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar +3 more
wiley +1 more source
Meikuang Anquan, 2023 In order to prevent and control the emission of toxic and harmful gases in the goaf of close coal seams, it is of great significance to study its distribution and migration behavior.
ZHANG Pengming +6 more
doaj +1 more source