Results 61 to 70 of about 102,327 (168)

Quantitative evaluation of the sealing effect of penetrating gas drilling and in situ repairing technology for smooth holes

open access: yesEnergy Science & Engineering
In this study, a new method is proposed to quantitatively determine the extraction of boreholes under the effect of time. The main purpose of this method is to divide the gas drilling holes in the monitoring time into two stages: the early stage of ...
Zuxiang Hu   +4 more
doaj   +1 more source

Molecular dynamics study on wettability difference between lignite dust and silica dust

open access: yesMeikuang Anquan
In this paper, the differences in the wetting mechanisms of lignite dust and silica dust were investigated using molecular dynamics simulations and quantum chemical methods.
Peng YANG   +7 more
doaj   +1 more source

Evaluation of multi-scale pore and fracture stress sensitivity in coal based on low field NMR technique

open access: yesMeikuang Anquan
Coal seam water injection is a widely used fully mechanized mining method for dust suppression. The pore structure and stress state change when water pressure acts on the coal during water injection, but the pore structure is the primary factor affecting
Liren LIU, Xiaotao ZHANG, Zhixin WANG
doaj   +1 more source

ECONOMICS OF DUST CONTROL [PDF]

open access: yesAnnals of the New York Academy of Sciences, 1965
openaire   +2 more sources

Design and simulation of pneumatic drilling orifice sealing spray dust removal device

open access: yesMeikuang Anquan
To address the health hazards, environmental pollution and explosion risks caused by high-concentration dust diffusion during the initial hole opening of coal mine pneumatic drilling, and to solve the problems of insufficient adaptability and limited ...
Wen HAO   +4 more
doaj   +1 more source

Development of real-time monitoring system for underground coal mine dust based on Unity 3D

open access: yesMeikuang Anquan
Aiming at the problems of the traditional coal mine safety monitoring system, such as the single dimension of disaster perception, lagging dynamic response, and especially the lack of real-time monitoring and control functions for dust concentration ...
Guichang HONG   +6 more
doaj   +1 more source

Hydroxyapatite-Supported Low-Content Pt Catalysts for Efficient Removal of Formaldehyde at Room Temperature

open access: yesACS Omega, 2019
Zhihua Xu   +5 more
doaj   +1 more source

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