Results 191 to 200 of about 7,021 (250)

Optimize the early warning time of coal and gas outburst by multi-source information fusion method during the tunneling process

, 2021
Accurate and advanced early warning of coal and gas outburst is an important means to ensure the process safety of coal mining. It is a difficult problem to realize the reliable early warning of coal and gas outburst because the cause of the complex ...
Bing Li, Enyuan Wang, Zheng-Jie Shang, Xiaofei Liu, Zhong-Hui Li, Bao-Lin Li, Hao Wang, Y. Niu, Yue Song   +8 more
semanticscholar   +1 more source

Accidents analysis and prevention of coal and gas outburst: Understanding human errors in accidents

, 2020
Coal is an important energy resource internationally. However, accidents have severely restricted the clean and safe production of coal resources. Among such accidents, coal and gas outburst accidents are a kind of coalmine disaster with high destructive
G. Fu, Xue-Cai Xie, Qingsong Jia, Wenqing Tong, Ying Ge   +4 more
semanticscholar   +1 more source

Prediction of coal and gas outburst: A method based on the BP neural network optimized by GASA

, 2020
With the development of computer science, many machine learning algorithms such as the back propagation (BP) neural network algorithm have been applied to the prediction of coal and gas outburst.
Yaqin Wu, Rong Gao, Jinzheng Yang
semanticscholar   +1 more source

Simulation of coal and gas outbursts in outburst-prone zones of coal seam

The problem of mining safety in outburst-prone coal seams has not yet been ful-ly studied and resolved, so research related to outbursts continues to be relevant for many coal-mining countries. The purpose of this work is to study the coupled pro-cesses of elastoplastic deformation of a coal seam, methane filtration and desorption, which occur in the ...
Viktoriia Krukovska, Oleksandr Krukovskyi   +1 more
openaire   +1 more source

Study on the intensity of coal and gas outburst

2004
The indexes of forecasting coal and gas outburst intensity are presented according to the spherical shell losing stability theory about outburst mechanism.In laboratory,outburst simulated tests have been carried out for many times.And the linear equation which can be used to forecast outburst intensity has been established by means of pluralistic ...
Chenglin Jiang, Jun Tang, Songli Chen
openaire   +1 more source

Methane release and energy evolution in coal and its implication for gas outburst

The Physics of Fluids
Gas outburst is a common underground geological hazard that poses a serious threat to coal mine safety production. To elucidate the influence of methane release behavior and energy evolution on gas outburst in coal, the microscopic pore parameters and ...
Xiang-Chun Li, Xiao-Peng Si, Xiao-Wei Li, Shuhao Zhang, Tao Yang, Linjie Hu, Bai-Sheng Nie, Zhong-Bei Li   +7 more
semanticscholar   +1 more source

A model for the initiation of coal-gas outbursts

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1985
In an attempt to model the initiation of a coal-gas outburst, the author discusses the mechanics of a porous rock medium in which the capillaries are filled with a gaseous substance. This gas can undergo capillary condensation, and thus the medium exists in a 3-phase state of solid, liquid and gas.
openaire   +1 more source

Study on Data Quality Evaluation of Coal and Gas Outburst

2010 International Conference on E-Business and E-Government, 2010
Data quality evaluation is an important part of the process of data mining. This article has build the information quality evaluation index system and evaluation model, determines the quantitative index for each quality dimension, and also demonstrates the formulas to calculate them.
Dong Lihong, Hou Yunbing
openaire   +2 more sources

Acoustic emission and electromagnetic radiation precursor signal identification and early warning of coal and gas outburst based on diffusion-semi-supervised classification method

The Physics of Fluids
Gas outbursts in coal seams represent a severe and formidable hazard, posing a significant threat to the safety of coal mining operations. The advanced early warning is a crucial preventive measure against outbursts.
Binglong Liu, Zhonghui Li, Zesheng Zang, En-Yuan Wang, Chao-Lin Zhang, Shan Yin   +5 more
semanticscholar   +1 more source

Coal damage mechanism in the developing process of coal and gas outburst

Journal of Coal Science and Engineering (China), 2009
Based on the damage analysis of elliptical aperture, the mechanism of coal damage in the developing process of coal and gas outburst was researched. The results show that the damage to coal by gas is mainly caused by the concentrated tensile stress appearing near the endpoint of the pores.
Hong-wei Jin, Qian-ting Hu, Yun-pei Liang   +2 more
openaire   +1 more source