Results 181 to 190 of about 7,021 (250)

Prediction of the Coal and Gas Outburst by Neural Network

2009 Second International Symposium on Computational Intelligence and Design, 2009
Back-propagation neural network model was developed to predict the coal and gas outburst. After trained, the artificial neural network model was used to predict the coal and gas outburst of several samples. Moreover, ANN model was also used to analyse the quantitative effects of influencing factors on the coal and gas outburst.
Wei You, Kun Wang, Huixiao Li, Yang Jia, Xiaoqin Wu, Yaning Du   +5 more
openaire   +2 more sources

Research on Early Warning of Coal and Gas Outburst Based on HPO-BiLSTM

IEEE Transactions on Instrumentation and Measurement, 2023
Aiming at the problem that coal and gas outburst is difficult to early warning, an early warning index system for coal and gas outburst was analyzed and established in this article.
Peng Ji, Shi-Liang Shi, Xingyu Shi
semanticscholar   +1 more source

Expansion energy of coal gas for the initiation of coal and gas outbursts

Fuel, 2019
Abstract The study of coal and gas outburst mechanisms is necessary for the safety and efficiency in mining. Gas expansion energy is a major factor in outburst initiation. However, the amount of coal gas participating in outburst initiation is hard to estimate. In this study, considering the effect of coal damage and the environmental pressure change
Fenghua An, Yu Yuan, Xiangjun Chen, Zhiqiang Li, Liyang Li   +4 more
openaire   +1 more source

Gas emission under coal and gas outbursts

Journal of Mining Science, 2011
The paper considers the conditions of methane hydrate existence in coal seams. The authors estimate volumes of gas emission in a fractured coal layer upon a drop in gas pressure. The authors also give the assessment of outburst hazard of coal seam edge zone.
S. A. Shepeleva, V. V. Dyrdin
openaire   +1 more source

The Power Source for Coal and Gas Outburst

Journal of Mining Science, 2019
The experiments were carried out connected with nitrogen adsorption on coal samples. The aim was to find out the power source for coal and gas outburst. The experimental data were fitted by the function of f(x)=axb. The total volume of micropores and the degree of micropore volume filled by nitrogen were calculated by the Dubinin-Radushkevich equation.
Lin Hong, Dameng Gao, Jiren Wang, Dan Zheng   +3 more
openaire   +2 more sources

A mechanism of outbursts of coal and gas

Mining Science and Technology, 1984
Abstract Rock and gas pressures combine to cause outbursts of coal and gas. The actions and interactions of geological factors, mining factors and intermediary events during the phenomenon are described.
openaire   +1 more source

Discussion on the Outburst Identification of Coal and Gas

Applied Mechanics and Materials, 2013
Problems existing in identification index, identification scope, identification process and other aspects were analyzed and discussed by combining the present situation of identification work of coal and gas outburst in China in this study, and targeted rationalization proposals were proposed.
Shao Quan Li, Yi Fu Liu, Feng Wang, Guo Hong Nie, Qing Song Li   +4 more
openaire   +1 more source

Coal and gas outburst risk level prediction model based on Bayesian theory and its application

Measurement science and technology
Coal and gas outburst poses a significant threat to mine safety, requiring effective risk level prediction methods. To enhance the accuracy and intelligence of outburst risk prediction, a prediction indices system of outburst risk integrating both prior ...
Yu-Jie Peng, Da-Zhao Song, Ming-Gong Guo, Li-Ming Qiu, Gang Yang, Lin Liu, Jun-Jun Quan, Qiang Liu   +7 more
semanticscholar   +1 more source

Stress Distribution Characteristics Near Small Coal Faults and Prediction of Coal and Gas Outburst Risk

Greenhouse Gases: Science and Technology
This study aims to accurately predict the risk of coal and gas outbursts in coal seams located near small faults. Models of small‐scale normal faults in the Changping mine field were constructed using the FLAC3D software, with fault dip angles of 65° and
Lin Wang, Jiabin Liu, Xiangjun Chen, Hanxiao Guo, Shuailong Feng   +4 more
semanticscholar   +1 more source

The role of coal strength in coal and gas outbursts

Physics of Fluids
Coal strength is one of essential factor influencing the occurrence of coal and gas outbursts (CGOs). In order to explore the laws of CGOs, simulation tests with different coal strengths were carried out under a self-developed CGO device. The results show that as the coal strength increases, the relative outburst strength decreases.
Han Meng, Yuzhong Yang, Wei Hou, Fenghua An, Haijun Guo, Xinwang Li, Fei Wang, Longlong Pang, Rui Zhang, Li Chen, Lichao Cheng   +10 more
openaire   +1 more source