Results 21 to 30 of about 272,354 (239)
Preparation and Sealing Performance of a New Coal Dust Polymer Composite Sealing Material
Advances in Materials Science and Engineering, 2018 In this study, a new coal-dust polymer composite material (CP) was fabricated to improve the borehole gas drainage effect and address the limitations of traditional sealing materials.
Bo Li +3 more
doaj +1 more source
A case study of gas drainage to low permeability coal seam
International Journal of Mining Science and Technology, 2017 Gas drainage at low gas permeability coal seam is a main barrier affecting safety and efficient production in coal mines. Therefore, the research and application of drainage technology at low permeability coal seam is a key factor for gas control of coal
Li Zhang, Hui Zhang, Hao Guo
doaj +1 more source
Flow and Jamming of Granular Suspensions in Foams [PDF]
, 2014 The drainage of particulate foams is studied under conditions where the particles are not trapped individually by constrictions of the interstitial pore space.
Haffner, B., Khidas, Y., Pitois, O.
core +5 more sources
Gas control technology of directional high-level long borehole at upper corner
Gong-kuang zidonghua, 2020 For problems that normal roof high-level borehole hardly drilled to design position because borehole direction and dip-angle cannot be controlled, and had short effective extraction hole segment, many drainage blind areas, discontinuous drainage and so ...
BAI Gang, YANG Zhong, DUAN Huiju
doaj +1 more source
The thinning of lamellae in surfactant-free foams with non-Newtonian liquid phase [PDF]
, 2008 Thinning rates of liquid lamellae in surfactant-free non-Newtonian gas–liquid foams, appropriate for ceramic or polymer melts and also in metals near the melting point, are derived in two dimensions by matched asymptotic analysis valid at small capillary
Brush, L.B., Roper, S.M.
core +1 more source
An Intelligent Mobile Gas Drainage Pumping Station
Meikuang Anquan, 2020 In this paper, an intelligent mobile gas pumping station is designed. By designing and installing the intelligent monitoring substation and water-softening device on the mobile gas drainage pumping station, the monitoring of various parameters in the ...
MENG Fanrui, ZHAO Yong, JING Yanbo, ZHAO Guoyong, SHAO Jirong, REN Zhichao
doaj +1 more source
Study on Gas Control in Goaf of High Gas Coal Seam: A Case Study of Tingnan Coal Mine, China
Geofluids, 2022 When stratified mining is used in extrathick coal seam, the gas emission in goaf of the first mining face is large, and it is easy to cause gas overrun in the upper corner during the rapid advance of the working face, which seriously affects the safe and
Jiamei Chai
doaj +1 more source
Release of CO2 and CH4 from lakes and drainage ditches in temperate wetlands [PDF]
, 2010 Shallow fresh water bodies in peat areas are important contributors to greenhouse gas fluxes to the atmosphere. In this study we determined the magnitude of CH4 and CO2 fluxes from 12 water bodies in Dutch wetlands during the summer season and studied ...
Berendse, F. +4 more
core +3 more sources
Application of gas drainage technology with separated sources in steep thick seam
Gong-kuang zidonghua, 2014 In order to solve problems of gas overrunning in No.735 Coal Mining Face of Dahuangshan Mine, a gas drainage technology with separated sources was put forward based on analysis of main sources of gas emission of the coal mining face, that is, gas in goaf
CHEN Xinrun, HOU Tiejun, ZHAO Yunfeng
doaj +1 more source
Research and application of intelligent decision-making platform for gas excavation from standard
Meikuang Anquan, 2022 In order to solve the defects of low intelligence in gas drainage and control, imperfect gas prevention and control information, and ignoring data analysis and situation prediction in gas drainage model, a set of intelligent decision-making platform for
10.13347/j.cnki.mkaq.2022.03.017 +6 more
doaj +1 more source