Results 71 to 80 of about 85,568 (231)

Prediction of Coal Spontaneous Combustion Hazard Grades Based on Fuzzy Clustered Case-Based Reasoning

Fire
Accurate prediction of the coal spontaneous combustion hazard grades is of great significance to ensure the safe production of coal mines. However, traditional coal temperature prediction models have low accuracy and do not predict the coal spontaneous ...
Qiuyan Pei, Zhichao Jia, Jia Liu, Yi Wang, Junhui Wang, Yanqi Zhang   +5 more
semanticscholar   +1 more source

Study on the Influence Mechanism of the Key Active Structure of Coal Molecules on Spontaneous Combustion Characteristics Based on Extraction Technology

Fire
The molecular structure of coal is complex, and the existing research methods are limited, so it is difficult to clarify its influence mechanism on the spontaneous-combustion characteristics of coal.
Jun Guo, Yunfei Wu, Yin Liu, Guobin Cai, Dailin Li, Yan Jin   +5 more
doaj   +1 more source

Study on Spontaneous Combustion Law and Prevention Technology of Abandoned Coal in Goaf of Coal Mine

Geofluids, 2023
The spontaneous combustion of coal in goaf areas is a significant natural disaster encountered during coal mining operations. To investigate the oxygen consumption characteristics of different coal types, we conducted TG experiments and closed oxygen ...
Lin Lin, Zongxiang Li, Mingqian Zhang, Chuntong Miao, Nan Jia, Yan Liu   +5 more
doaj   +1 more source

Přehled výzkumu a využití indikačních plynů samovznícení uhlí v Číně [PDF]

, 2014
The beginnings of research and use of results in the area of indicator gas application for early detection of spontaneous combustion of coal in China comes from the sixties of the last century.
Adamus, Alois, Feng, Xiyang
core  

Ignition of Deflagration and Detonation Ahead of the Flame due to Radiative Preheating of Suspended Micro Particles [PDF]

, 2015
We study a flame propagating in the gaseous combustible mixture with suspended inert particles. The gas is assumed to be transparent for the radiation emitted by the combustion products, while particles absorb and re-emit the radiation. Thermal radiation
Ivanov, M. F., Kiverin, A. D., Liberman, M. A.   +2 more
core  

Study on spontaneous combustion characteristics of water-soaked coal

Meikuang Anquan
In order to investigate the influence degree of water-soaked coal with different moisture contents on coal spontaneous combustion, coal samples with different moisture contents are prepared, programmed temperature experiment was used to test the thermal ...
Zhu CHEN, Mingwei XU, Haobin LI, Liang BAI, Yongliang YANG, Shangxue YANG, Yage LI   +6 more
doaj   +1 more source

Modeling of gas circulation in the goaf of retreat faces/ [PDF]

, 1997
International audienceFrench coal mines are deep, gassy and prone to spontaneous combustion. The main technique used for mining at Houilleres du Bassin de Lorraine (HBL) consists in retreat faces, mainly as a consequence of strata pressure at a current ...
Carrau, André, Pokryszka, Zbigniew, Saraux, Eric, Tauziède, Christian   +3 more
core   +1 more source

Rock-magnetic properties of TRM carrying baked and molten rocks straddling burnt coal seams [PDF]

, 2001
The subsurface spontaneous combustion of coal seams in Xinjiang (NW China) during Pleistocene to recent times produced large areas of thermally altered sedimentary rocks with large magnetic moments.
Boer, C.B. de, Dekkers, M.J., Hoof, Ton A.M. van   +2 more
core   +1 more source

Classification warning for spontaneous combustion of residual coal in goaf under air leakage conditions - A case study

Results in Engineering
To enhance the accuracy of index gases in predicting coal spontaneous combustion severity in goaf under air leakage conditions, this study conducted thermogravimetric and temperature-programmed experiments to investigate the characteristics of coal mass ...
Run Liu, Bo Li, Xinwei Guo, Jianwei Li, Xintian Li   +4 more
doaj   +1 more source

Spontaneous combustion liability of coal and coal-shale: a review of prediction methods

International Journal of Coal Science & Technology, 2019
This study presents a review of the various methods to predict the spontaneous combustion liability of coal and coal-shale. The relative propensity of coal to undergo self-heating can be established by different methods.
M. Onifade, B. Genc
doaj   +1 more source