Study on the influence of coal fire on the temporal and spatial distribution of CO and CH gas emissions.

In order to study the impact of gas released from coal fire combustion on the spatial-temporal distribution of CO and CH and other greenhouse gas emissions, the impact of regional coal fire on CO and CH emission flux was comprehensively evaluated using Landsat 8 and GOSAT satellite data in Xinjiang. In addition, typical fire areas are selected, a single-channel algorithm is used to invert the surface temperature of the coal field, the spatial distribution of the coal fire area is extracted by setting the threshold, and the influence law of CO and CH emissions in the typical fire area is accurately analyzed. The results show that during 2017-2018, CO and CH emissions in Xinjiang were generally dispersed and locally concentrated, while CO-O and CH-O were at low levels in most regions, fluctuating in the ranges of 0.

A visual knowledge map analysis of mine fire research based on CiteSpace.

Mine fire has always been a serious disaster in coal industry; many academic achievements have poured out in the past two decades for solving this problem. In this study, visual analysis was conducted to grasp the hotspots and development trend of mine fire research. Papers that published in 1999-2020 were retrieved as the data basis from Web of Science, and CiteSpace was used to carry out knowledge map analysis.

Macromolecule simulation studies on mechanical properties and CH/CO adsorption characteristics in bituminous coal matrix based on uniaxial tension-compression effect.

With the increasing complication of production and geology conditions, and the increase of mining intensity and depth in coal mine, the coal structure presents varying degrees of deformation. In order to study the influence of uniaxial tension-compression effect on mechanical properties of coal matrix and CH/CO adsorption characteristics, a macromolecular model reflecting the realistic bituminous coal structure was established. Results demonstrate that the influence of tension strain on the microporous structural parameters is greater than that of compression strain, and the tension strain weakens the mechanical properties but enhances the adsorbates adsorption amount.

Status of research on hydrogen sulphide gas in Chinese mines.

In the process of coal mining, the abnormal gushing of hydrogen sulphide in mines poses a major threat to the health of coal miners and the safe production of mines, as these types of accidents have occurred in many coal-producing countries. China is the largest coal producer and consumer in the world and is one of the countries that are substantially affected by hydrogen sulphide in mines. Based on the existing studies, many investigators in China have conducted research on the actual situation in China and obtained some results.

Firefighting of subsurface coal fires with comprehensive techniques for detection and control: a case study of the Fukang coal fire in the Xinjiang region of China.

Coal fires are global disasters, and China suffers the most serious coal fire disasters in the world. This paper introduces detailed detection and extinguishing methods for the wide range and complex coal fires at the No. 1 well in the Fukang mining area.