Study on Multipoint and Zoning Coordinated Prevention of Gas and Coal Spontaneous Combustion in Highly Gassy and Spontaneous Combustion-Prone Coal Seam

Zhang, Chunhua; Jiao, Dengming; Zhang, Min; Huang, Ge

doi:10.1021/acsomega.2c01271

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…with 16 and 12 publications, respectively. These two scholars have paid more attention to the disaster-causing mechanism of coal spontaneous combustion and prediction and prevention and control technology, such as exploring the disaster-causing mechanism of gas and spontaneous combustion composite in high gas-prone coal seams [33], the graded warning method of coal natural fire and studying the preferred index for early prediction of spontaneous combustion in high gas coal seams [34][35][36]. All of the above scholars have been cited more than 13 times/article, indicating that the research results of these scholars have significant influence in the field of coal spontaneous combustion warning and prevention and control.…”

Section: Analysis Of Institutional Cooperationmentioning

confidence: 99%

Analysis of the Current Status and Hot Technologies of Coal Spontaneous Combustion Warning

Wang,

Ji,

Wang

et al. 2023

Processes

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Coal spontaneous combustion disasters are one of the most serious types of mine disasters in China at present, posing a huge threat to underground personal safety and coal production operations. In order to prevent and control coal spontaneous combustion hazards and construct an efficient early warning system, this paper presents a review of coal spontaneous combustion early warning based on the Web of Science database search of 583 papers related to coal spontaneous combustion early warning collected from 2002 to 2021, using VOSviewer visualization software. The number of publications and partnerships at the author, institution and country levels are obtained, and the research hotspots in the field of coal spontaneous combustion warning are obtained based on keyword co-occurrence and clustering. The results show that the research results of scholars with a high publication volume have significant influence in the field of coal spontaneous combustion warning and prevention and control, and a more mature camp has been formed among the research authors; a more stable core group of institutions has been formed in the field of coal spontaneous combustion warning; most of the national publications are concentrated in mineral resource-mining countries; the analysis of hot keywords shows that “sign gas warning” and “warning models and technologies” are the key contents of this field. The analysis of hot keywords shows that “sign gas early warning” and “early warning model and technology” are the key contents of this field. The research content of this paper is helpful for researchers to find the latest information on the current research and trends in the field of spontaneous combustion prevention and coal seam monitoring.

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Section: Analysis Of Institutional Cooperationmentioning

confidence: 99%

Analysis of the Current Status and Hot Technologies of Coal Spontaneous Combustion Warning

Wang,

Ji,

Wang

et al. 2023

Processes

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“…In order to manage the gas in soft and hard composite coal seams, Li 15 researched that the construction of high-pressure water jet hydraulic flushing technology in the floor drainage roadway can improve the effect of gas extraction. Zhang 16 studied the synergistic management technology of gas and coal spontaneous combustion in stratified mining of thick coal seams. Ren 17 studied the effect of gas extraction from 300 mm large-diameter boreholes.…”

Section: Introductionmentioning

confidence: 99%

Study on the Application of Comprehensive Gas Control Technology for Source-Separated Three-Dimensional Gas Extraction in Large Mining Faces

Liu,

Wang,

Wang

et al. 2024

ACS Omega

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In order to address the challenges of high gas outburst in both the adjacent layers and the coal seam itself faced by large mining faces, a study on the three-dimensional extraction of gas from different sources at a large mining face was conducted.Based on the research on the instability and failure characteristics of the overlying strata during mining and the gas outburst characteristics at the large mining face, a source-separated threedimensional gas extraction system was established. A comprehensive gas management model for the large mining face, involving the extraction of gas from different sources, has been proposed. This model is suitable for gas management at large mining faces where there is a high gas emission in the adjacent layers and a complex structure of the coal seam. Through numerical simulations using FLAC 3D , the height of the "three zones" of the overlying strata and the range of the floor fracture zone at the large mining face were obtained, providing guidance for the layout of high-level drainage roadway, low-level drainage roadway, and floor drainage roadways. Following the coordinated layout of high-level drainage roadway, inclined high-level drainage roadway, and low-level drainage roadway, the reasonable optimization of gas extraction techniques in the coal seam, and the reasonable arrangement of floor rock predrainage roadways, the methane capture efficiency of the large 15115 mining face reached 87.5%. The methane concentrations at the upper corner and in the return airflow being below 0.8%. The methane concentration extracted from the coal seam boreholes is 2.9 times higher than that from the ordinary mining face after adopting "ordinary boreholes + large-diameter boreholes". This gas management model effectively addresses the gas-related challenges of the large mining face and improves the gas extraction rate, achieving harmonious mining and extraction of coal and methane.

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“…3,4 Coal sample observation and logging curve interpretation are the common methods to clarify the vertical coal structure characteristics and their combinations, as well as the spatial variation in different areas. 5,6 The observation of coal samples includes the coal type, coal structure, and maceral. The deep lateral resistivity logging (LLD), gamma ray logging (GR), density logging (DEN), and acoustic logging (AC) logging curves are widely used in the exploration of coal fields, and the coal structure can be identified according to the amplitude, amplitude variation, shape, and peak of these curves.…”

Section: Introductionmentioning

confidence: 99%

Coal Structure Characteristics of the 2# Coal Seam in the Jiaozuo Mining Area and Its Geological Dependence

Duan,

Ma,

Wang

et al. 2023

ACS Omega

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To clarify the coal structure, spatial distribution, and controlling factors of the 2# coal seam in Jiaozuo mining, the drilling coal samples were collected to observe the coal type and coal structure. The coal macerals were identified by a MPVSP microscope photometer, and the spatial characteristics of the coal structure were obtained through interpreting deep lateral resistivity logging, natural gamma ray logging, density logging, and acoustic logging curves. The influence of coal properties, burial depth, geological stress, and faults on the coal structure were discussed correspondingly. The results exhibit that granulitic−mylonite coal was most developed in the 2# coal seam, followed by primary coal and cataclastic coal; the coal type was dominated by semibright coal, followed by clarain and semidull coal. Granulitic−mylonite, cataclastic, and primary coals were the main components of clarain, semibright coal, and semidull coal, respectively. Higher vitrinite and organic matter contents were conducive to the development of granulitic−mylonite. The coal structure combinations were spatially varied, and the granulitic− mylonite combinations were the most common. Granulitic−mylonite coal was developed in the east and south parts of the study area, and the coal structure was fragmented with a greater burial depth and larger thickness. The geological stress is the fundamental cause of coal structure damage as well as the cutting of faults.

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Study on Multipoint and Zoning Coordinated Prevention of Gas and Coal Spontaneous Combustion in Highly Gassy and Spontaneous Combustion-Prone Coal Seam

Cited by 6 publications

References 22 publications

Analysis of the Current Status and Hot Technologies of Coal Spontaneous Combustion Warning

Analysis of the Current Status and Hot Technologies of Coal Spontaneous Combustion Warning

Study on the Application of Comprehensive Gas Control Technology for Source-Separated Three-Dimensional Gas Extraction in Large Mining Faces

Coal Structure Characteristics of the 2# Coal Seam in the Jiaozuo Mining Area and Its Geological Dependence

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