Results 51 to 60 of about 765,751 (280)
Metal‐free Hydrogen Generation from Seawater and Silicon Waste: A Circular Approach
Angewandte Chemie, EarlyView.Hydrogen was rapidly generated directly from untreated seawater and polymeric Si waste without any transition metal catalyst. The in situ generated polymeric cross‐linked Si resin was completely depolymerized under mild conditions into chloro‐silane monomers.
Mustapha Hamdaoui +6 more
wiley +2 more sources
Ultrasonic and CT scanning analysis of coal-rock mass under the primary bedding structure
Meitan kexue jishuIn order to study the influence of the primary bedding structure on wave velocity and mechanical properties of coal-rock mass, multilayer and multi-directional ultrasonic and CT scanning tests were carried out in laboratory.
Guorong LEI +6 more
doaj +1 more source
Study and practice on modification mechanism of engineering defects on impact coal and rock mass
Meikuang Anquan, 2022 Rock burst is one of the more serious dynamic disasters in coal mines. With the continuous increase of mining depth, rock burst disasters are becoming more and more serious. In view of the characteristics of major rock burst disasters, combined with the
KOU Tiansi, PAN Liyou, CHEN Liqiang
doaj +1 more source
Coal burst spatio-temporal prediction method based on bidirectional long short-term memory network
International Journal of Coal Science & TechnologyThe increasingly severe state of coal burst disaster has emerged as a critical factor constraining coal mine safety production, and it has become a challenging task to enhance the accuracy of coal burst disaster prediction.
Xu Yang +6 more
semanticscholar +1 more source
A review of investigations on ground support requirements in coal burst-prone mines
International Journal of Coal Science & Technology, 2022 Ground support is widely implemented to mitigate dynamic rock failures in underground mines. This paper investigated the ground support requirements in burst-prone mines to mitigate the catastrophic dynamic rock failures of rock and/or coal bursts. First,
Chunchen Wei +4 more
semanticscholar +1 more source
Meitan kexue jishuTo address the prevention and control of rock burst disasters in deep coal mines, this study focuses on the spatiotemporal evolution mechanism of mining-induced stress, introducing the novel concept of “stress flow” to characterize dynamic stress ...
Chi LIU +7 more
doaj +1 more source
Coal Burst Prevention Technology and Engineering Practice in Ordos Deep Mining Area of China
Sustainability, 2022 With the coal mines in western China entering the field of deep mining, the problem of coal burst is becoming more and more serious. According to the characteristics of deep mining, it is an urgent problem that requires the development of an efficient ...
Weihui Pan +7 more
semanticscholar +1 more source
Quantitative assessment of energy changes in underground coal excavations using numerical approach
Geohazard Mechanics, 2023 Coal burst is caused by a dynamic and unstable release of energy within the overstressed rock mass/coal during the mining process. Although the occurrence of coal burst is a result of the complex impacts of many factors, a major component of coal burst ...
Chunchen Wei +4 more
doaj +1 more source
, 2021 In order to prevent the rock burst caused by horizontal sublevel mining of a steeply inclined extra-thick coal seam, the mechanism of rock burst induced by the superposition of dynamic and static loads and the corresponding prevention measures were ...
WANG Zhengyi, DOU Linming, HE Jiang, CAO Jinrong
core +1 more source
Meitan kexue jishuMechanical behaviors of deformation, rupture, and ejection failure of coal with impact inclination under uniaxial compression were investigated. Uniaxial compression tests were conducted on coal with impact inclination at different loading rates.
Guorong LEI +10 more
doaj +1 more source