Results 31 to 40 of about 9,082,756 (299)

Research on the Outburst–Rockburst Coupling Disaster Law Based on True Triaxial Unloading Tests

open access: yesApplied Sciences
The coal and gas outburst and rockburst coupling disaster is becoming increasingly serious due to deep mining. To clarify the mechanism inducing the outburst–rockburst coupling disaster, a true triaxial single-sided unloading mechanical test was ...
Lei Shan, Fukun Xiao, Gang Liu, Kai Xie
doaj   +2 more sources

Constraining the Chemical Signatures and the Outburst Mechanism of the Class 0 Protostar HOPS 383 [PDF]

open access: yesAstrophysical Journal, 2020
We present observations toward HOPS 383, the first known outbursting Class 0 protostar located within the Orion molecular cloud using the Atacama Large Millimeter/submillimeter Array (ALMA), Very Large Array (VLA), and Submillimeter Array (SMA).
Rajeeb Sharma   +7 more
semanticscholar   +1 more source

Research progress of coal and gas outburst mechanism based on geological structure

open access: yesMeikuang Anquan, 2022
Aiming at the problem of coal and gas outburst in the process of coal mining in China, this paper first summarizes the research progress of coal and gas outburst mechanism, and points out that the research on outburst mechanism of tectonic belt is of ...
ZHAO Junli, WANG Wenyuan, YANG Wei
doaj   +1 more source

Effects of confinement and vaccination on an epidemic outburst: A statistical mechanics approach [PDF]

open access: yesPhysical Review E, 2021
This work describes a simple agent model for the spread of an epidemic outburst, with special emphasis on mobility and geographical considerations, which we characterize via statistical mechanics and numerical simulations. As the mobility is decreased, a percolation phase transition is found separating a free-propagation phase in which the outburst ...
Óscar Toledano   +4 more
openaire   +4 more sources

Numerical Study on the Mechanism of Coal and Gas Outburst in the Coal Seam Thickening Area during Mining

open access: yesEnergies, 2023
Most coal and gas outbursts occur in the coal thickness variation zone. However, it is difficult to illustrate the mechanism of outbursts in coal thickening areas by physical simulation experiments. In this study, a coupled multi-field model, established
Zhengshuai Liu   +3 more
semanticscholar   +1 more source

Mechanism of the delayed coal–gas outburst caused by creep instability of the ‘‘barrier layer and tectonic coal’’ combination

open access: yesGeomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023
The delayed coal–gas outburst is caused by creep instability of the barrier layer followed by sudden exposure of the tectonic coal. Most of the delayed coal–gas outburst incidents were affected by dynamic disturbance.
Lehua Xu, Haina Jiang, Hao Zhang
semanticscholar   +1 more source

Experimental investigations of stress‐gas pressure evolution rules of coal and gas outburst: A case study in Dingji coal mine, China

open access: yesEnergy Science & Engineering, 2020
Coal and gas outburst is a potentially fatal risk during the mining of gassy coal seams, which seriously threatens the safe mining of collieries. To understand the outburst mechanism and evolution rules, a new apparatus (LSTT) was developed to conduct ...
Bo Zhao   +5 more
doaj   +1 more source

Gas pressure evolution characteristics of deep true triaxial coal and gas outburst based on acoustic emission monitoring

open access: yesScientific Reports, 2022
Coal and gas outburst is one of the geological disasters that seriously threaten the safety of coal mines production. In recent years, with the increase of mining depth, outbursts become frequent.
Xin Zhang   +3 more
doaj   +1 more source

Relationship between plastic zone of roadway and coal and gas outburst hole

open access: yesMeikuang Anquan, 2022
The outburst hole is of great significance to study the mechanism of coal and gas outburst. Through numerical simulation, the plastic zone of coal body at the excavation head of outburst roadway is obtained and compared with the actual outburst holes ...
HAN Sen, WANG Weijun, PENG Gang
doaj   +1 more source

Energy principle of simulation experiments on coal and gas outburst

open access: yesMeitan xuebao, 2023
Coal and gas outburst is an extremely destructive gas dynamic disaster in mines. Since such dynamic disasters are usually difficult to observe directly, physical similarity simulation of coal and gas outburst has become an important method for collecting
Yuanping CHENG, Yang LEI, Sijie YANG
doaj   +1 more source

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