Results 81 to 90 of about 12,324 (191)

Alarm methods of coal and gas outburst

Gong-kuang zidonghua, 2014
Colliery gas accidents in recent 10 years were analyzed, and numbers of accidents and deaths accounted for 62.3% and 66.5% respectively. The placement methods of coal and gas outburst alarm sensors of methane, wind speed, wind direction were put forward.
openaire   +1 more source

Current Status of Research on the Coal and Gas Outburst Control Technology of Hydration and Anhydrous. [PDF]

ACS Omega, 2023
Zhang J, Wang L, Chen X.
europepmc   +1 more source

A novel combined intelligent algorithm prediction model for the risk of the coal and gas outburst. [PDF]

Sci Rep, 2023
Wang Z, Xu J, Ma J, Cai Z.
europepmc   +1 more source

ABOUT THE PRE-OUTBURST STATE OF THE COAL AND SANDSTONE AND THE POSSIBLE MECHANISM OF COAL AND GAS OUTBURST PROCESS

Мінеральні ресурси України, 2018
The paper aims to examine the suitability of A. S. Balankin brittle fracture criterion in predicting the of large-scale coal and gas outbursts in underground coal mines under compression load. Formation of dissipative structures as cracks and clusters of local microcracking occurs under the influence of the rock pressure.
Yu. I. Voitenko, А. V. Kovtun
openaire   +2 more sources

Influence law and control mechanism of coal seam permeability on coal and gas outburst

Meitan xuebao
Coal and gas outburst is a destructive gas dynamic disaster in coal mines, which seriously threatens the safety of coal mine production. Coal permeability is an important parameter that comprehensively reflects the characteristics of coal seams. The coal
Chaolin ZHANG, Mingliang LIU, Enyuan WANG, Peizhong WANG, Qiaozhen JIANG, Wei ZENG   +5 more
doaj   +1 more source

Prevention and Control of Coal and Gas Outburst by Directional Hydraulic Fracturing through Seams and Its Application. [PDF]

ACS Omega, 2023
Li X, Zhou W, Hao S, Wu T, Zhang J.
europepmc   +1 more source

Review of coal and gas outburst in Australian underground coal mines

International Journal of Mining Science and Technology, 2019
Outburst of coal and gas represents a significant risk to the health and safety of mine personnel working in development and longwall production face areas. There have been over 878 outburst events recorded in twenty-two Australian underground coal mines.
openaire   +3 more sources

Changes in pore pressure and temperature during coal and gas outburst stimulated by mining-induced stress

Meitan xuebao
The phenomenon of coal and gas outburst, triggered by factors including mining-induced stress, manifests as coal seam rupture and rapid gas expulsion. Elucidating the changes in stress, pore pressure, and temperature during this process holds paramount ...
Jianguo ZHANG, Man WANG, Dongming ZHANG, Beichen YU, Yujie WANG   +4 more
doaj   +1 more source

Macroscopic fracture mechanism of coal body and evolution characteristics analysis of impact force in deep coal and gas outburst. [PDF]

Sci Rep, 2023
Ren L, Tang J, Pan Y, Zhang X, Yu H.
europepmc   +1 more source

Multi-physical field parameter response in the whole process of coal and gas outburst under deep high stress

Meikuang Anquan
Based on the thermo-fluid-solid coupling law of coal and gas outburst in deep mining, a numerical model of coal and gas outburst is established, and the response of multi-physical parameters in the whole process of coal and gas outburst under high stress
Qiang ZHANG, Jun NIAN, Bo ZHAO, Wei ZHANG   +3 more
doaj   +1 more source