Results 31 to 40 of about 3,109 (220)

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

Effect of Water Invasion on Outburst Predictive Index of Low Rank Coals in Dalong Mine. [PDF]

open access: yesPLoS ONE, 2015
To improve the coal permeability and outburst prevention, coal seam water injection and a series of outburst prevention measures were tested in outburst coal mines.
Jingyu Jiang   +4 more
doaj   +1 more source

Development and application of simulation experimental system for impact dynamic effect and disaster-causing characteristics of coal and gas outburst

open access: yesMeitan xuebao, 2023
As the disaster-causing characteristics of coal and gas outburst and the mechanism of induced mine airflow disaster are not clear, the facilities such as air door and self-rescue system are often arranged on site according to miner’s experience, thus it ...
Xuelin YANG   +6 more
doaj   +1 more source

Law of gas-solid particle ejection during coal and gas outburst and the classification method of outburst mine risks

open access: yesMeikuang Anquan
In order to reveal the evolution law of coal and gas outburst gas-solid particle flow, an analysis method combining field statistical data with numerical simulation data was proposed based on the discrete element numerical simulation method.
Yanlei GUO   +5 more
doaj   +1 more source

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

open access: yesМінеральні 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

A Study on the Energy Condition and Quantitative Analysis of the Occurrence of a Coal and Gas Outburst

open access: yesShock and Vibration, 2019
With mining depths increasing, coal and gas outburst disasters are becoming more and more serious and complicated, which directly restricts the production efficiency of coal mines.
Linchao Dai   +6 more
doaj   +1 more source

Study of the multi-index coupling forecasting model of coal and gas outburst and its application

open access: yes工程科学学报, 2018
Coal and gas outburst seriously threatens the safety of underground coal mining. With the increase in coal mining depth, the geological conditions of coal mines become complicated, which adversely affects the safety of coal mining production.
ZHANG You-yi   +2 more
doaj   +1 more source

Recent advances on mechanism and prevention technology of coal and gas outburst disasters in China

open access: yesMeitan kexue jishu
Coal and gas outburst is a kind of mine dynamic disaster that occurs in underground coal mines, often causing mass casualties and seriously restricting the safe and efficient production of coal mines.
Chaojun FAN   +7 more
doaj   +1 more source

Research status and development trend of mechanism and simulation test of coal and gas outburst

open access: yesGong-kuang zidonghua, 2018
Theoretical research status of mechanism of coal and gas outburst was summarized. Typical examples of similar materials of gas-bearing coal and simulation experiment device of coal and gas outburst were analyzed.
LIU Yejiao   +5 more
doaj   +1 more source

Study on the impact force evolution law of coal and gas outburst under high ground stress

open access: yesMeitan kexue jishu, 2023
With the increase of mining depth and intensity, the dynamic disaster of coal and gas outburst was frequent. The disaster-causing mechanism of impact force has become the main direction of current research.
Jupeng TANG   +4 more
doaj   +1 more source

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