Results 1 to 10 of about 473,231 (148)

Motion Characteristics of Collapse Body during the Process of Expanding a Rescue Channel

open access: yesApplied Sciences, 2022
For the rapid construction of a rescue channel in the process of underground emergency rescue, a method for the expanded rescue channel in the collapse body is proposed and verified by a model test and a numerical simulation experiment.
Yanlong Fu   +5 more
doaj   +1 more source

High-pressure gas hydrates [PDF]

open access: yesPhys. Chem. Chem. Phys., 2008
It has long been known that crystalline hydrates are formed by many simple gases that do not interact strongly with water, and in most cases the gas molecules or atoms occupy 'cages' formed by a framework of water molecules. The majority of these gas hydrates adopt one of two cubic cage structures and are called clathrate hydrates.
Loveday, J. S., Nelmes, R. J.
openaire   +5 more sources

Distribution Law of Mining Stress of the Gob-Side Entry Retaining in Deep Mining Thin Coal Seam

open access: yesAdvances in Civil Engineering, 2021
In order to explore the mining pressure development rule of gob-side entry retaining during deep thin coal seam mining, FLAC3D numerical simulation is applied to analyze the stress distribution rule of gob-side entry retaining, observing the left third ...
Tao Qin   +5 more
doaj   +1 more source

Research on the Impact of Different Force Directions on the Mechanical Properties and Damage Evolution Law of Sandstone with Different Hole Diameters

open access: yesAdvances in Civil Engineering, 2021
In this research, a uniaxial acoustic emission experiment was conducted on rock samples with different positions and diameters of the hole, and an analysis was made on the impact of different hole positions and diameters on the mechanical properties ...
Fukun Xiao, Renhe Li, Le Xing
doaj   +1 more source

Numerical simulation of factors influencing the efficiency of a horizontal gas filter

open access: yesYou-qi chuyun, 2021
The performance of the filter elements configured at the gas station and the user entrance changes dynamically with the service conditions. If the filter element is not cleaned and replaced in time, the gas passing efficiency will be affected seriously ...
Peng XU   +4 more
doaj   +1 more source

Progress of research on leakage diffusion of gas pipelines

open access: yesYou-qi chuyun, 2022
Gas pipelines in China have gradually entered the stage of frequent accidents, and gas leakage will increase the safety risk of pipeline operation, even resulting in personnel casualties.
Peng XU   +4 more
doaj   +1 more source

Research on Energy Conversion and Damage Features of Unloading Instability of Sandstone under High Stress

open access: yesAdvances in Civil Engineering, 2021
In order to explore the failure characteristics of sandstone under unloading conditions in deep zone with high stress, constant axial pressure and unloading confining pressure tests were conducted on a yellow sandstone sample under different initial ...
Zhiyuan Hou   +3 more
doaj   +1 more source

Seismic resistance capacity on pipe braced supporting frame of spherical tank

open access: yesNihon Kikai Gakkai ronbunshu, 2015
A significant fire and explosion accident on spherical tanks for Liquefied Petroleum Gas (LPG) storage at Chiba prefecture in Japan were induced by the strong ground motion of the 2011 Great East Japan Earthquake and its aftershock.
Takashi OHNO   +2 more
doaj   +1 more source

Development of the first Raman scattering thermometry during the first stage ignition in a rapid compression machine and determination of detection limits for NO-LIF

open access: yesApplications in Energy and Combustion Science, 2023
The interaction of recirculated NOX with two-stage fuels in the early combustion process is not fully understood, especially at lower temperatures. Recently developed kinetic combustion models try to reproduce these interactions.
Raphael Dewor   +5 more
doaj   +1 more source

Experimental Study on Percolation Rate Characteristics of Gas-Filled Coal Bodies Based on True Triaxial Condition

open access: yesShock and Vibration, 2021
To research the percolation rate of gas-filled coal based on true triaxial condition, this paper uses the three-phase coupling true triaxial servo test device to carry out the seepage test of coal, and the percolation rate of coal under different ...
Xiao Fukun   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy