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Sustainable Development and Utilization of Coal Measures Resources
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Sustainable Development and Utilization of Coal Measures Resources

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Resources and Sustainable Utilization".

Deadline for manuscript submissions: closed (15 October 2023) | Viewed by 7874

Special Issue Editors

Dr. Baoqing Li

E-Mail Website
Guest Editor
School of Earth Resources, China University of Geosciences, Wuhan 430051, China
Interests: coal geochemistry; coal mineralogical; critical metal deposits in coal measures; comprehensive utilization of coal measure resources; oil-rich coal
Prof. Dr. Jijun Tian

E-Mail Website
Guest Editor
School of Geological and Mining Engineering, Xinjiang University, Urumuqi 830047, China
Interests: coal methane; coal gasification and liquefaction; coal geology; coal geochemistry; coal mineralogy; depositional environment; sequence stratigraphy
Dr. Jing Li

E-Mail Website
Guest Editor
Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Wuhan 430074, China
Interests: coal geology; critical elements in coal and coal combustion products (CCPs); coal geochemistry; coal mineralogy; environmental geochemistry of CCPs; sustainable and high value added utilization of CCPs
Special Issues, Collections and Topics in MDPI journals
Dr. Beilei Sun

E-Mail Website
Guest Editor
Department of Geosciences and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Interests: Sm–Nd dating; Sr isotopes; coal mineralogy; coal geology; coal geochemistry

Special Issue Information

Dear Colleagues,

The sustainable development and efficient utilization of the resources of coal measures is of great significance to achieving carbon neutrality in the coming decades worldwide. Coal measure resources primarily include coal-hosted critical metals (such as rare earth elements, lithium, zirconium, gallium, germanium, etc.), coal measure gases, bauxite, claystone, special coal species (oil-rich coal, liquefaction coal, gasification coal, and coking coal), oil sand, among others, in coal-bearing strata as well as coal combustion products (CCPs), which are very important resources to promote the economic and social development. For instance, coal measure-hosted critical metal ore deposits can be regarded as potential sources of critical elements and have been a hot topic in the field of coal geology. Coal resources with high tar yield are classified as oil-rich coal, from which petroleum can be extracted. It is vital to understand the distribution and formation of coal measure resources, which will help in making informed decisions about their comprehensive utilization. Thus, this Special Issue aims to discuss the distribution, formation, and utilization of coal measure resources. We cordially invite prospective authors to contribute either original research articles or review articles dealing with broad range of topics including, but not limited to, the following areas:

(1) Distribution and formation of special coal species (oil-rich coal, liquefaction coal, gasification coal, and coking coal);

(2) Mineralogical characteristics of metalliferous coals;

(3) Coal-hosted critical metals: distribution, modes of occurrence, and enrichment mechanisms;

(4) Recovery of critical metals from coal-bearing strata and coal combustion products (CCPs);

(5) Bauxite, claystone, and other resources in coal-bearing strata;

(6) Characterization of coal measure gases;

(7) Clean utilization of special coal species (liquefaction coal, gasification coal, coking coal).

Dr. Baoqing Li
Prof. Dr. Jijun Tian
Dr. Jing Li
Dr. Beilei Sun
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • coal
  • oil-rich coal
  • coal-hosted critical metals
  • coal combustion products
  • modes of occurrence
  • coal-bearing strata

Published Papers (6 papers)

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Research

16 pages, 6274 KiB  
Article
Influence of Depth on CO2/CH4 Sorption Ratio in Deep Coal Seams
by Barbara Dutka
Sustainability 2024, 16(1), 43; https://doi.org/10.3390/su16010043 - 20 Dec 2023
Viewed by 514
Abstract
The present work aims to analyse the influence of present-day burial depths of coal seams on the sorption properties towards CH4 and CO2, respectively. For medium-rank coals located in the southwestern area of the Upper Silesian Coal Basin (USCB), the [...] Read more.
The present work aims to analyse the influence of present-day burial depths of coal seams on the sorption properties towards CH4 and CO2, respectively. For medium-rank coals located in the southwestern area of the Upper Silesian Coal Basin (USCB), the gravimetric sorption measurements were carried out with pure gases at a temperature of 30 °C. The variability of CO2/CH4 exchange sorption and diffusivity ratios was determined. It was revealed that in coal seams located at a depth above 700 m, for which the sorption exchange ratio was the greatest, the process of CO2 injection for permanent storage was more beneficial. In the coal seams lying deeper than 700 m with a lower CO2/CH4 sorption ratio, the CH4 displacement induced by the injection of CO2 (CO2-ECBM recovery) became more favourable. Full article
(This article belongs to the Special Issue Sustainable Development and Utilization of Coal Measures Resources)
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21 pages, 18055 KiB  
Article
Mechanism and Application of Roof Cutting by Directional Energy-Cumulative Blasting along Gob-Side Entry
by Eryu Wang, Zhen Shi, Wenyuan Xi, Jiwei Feng and Pengfei Wu
Sustainability 2022, 14(20), 13381; https://doi.org/10.3390/su142013381 - 17 Oct 2022
Cited by 3 | Viewed by 959
Abstract
In this paper, roof-cutting technology of directional energy-cumulative presplitting blasting is taken as the research object. Through the numerical simulation software Ansys/Ls-dyna3D, the process of energy-cumulative blasting and non-cumulative blasting is simulated and analyzed by using the ALE algorithm. Moreover, the evolution processes [...] Read more.
In this paper, roof-cutting technology of directional energy-cumulative presplitting blasting is taken as the research object. Through the numerical simulation software Ansys/Ls-dyna3D, the process of energy-cumulative blasting and non-cumulative blasting is simulated and analyzed by using the ALE algorithm. Moreover, the evolution processes of tensile strain energy, detonation stress wave of explosives, stress state of rock mass, and rock crack damage cumulative are compared in two conditions. In the energy cumulative state, the detonation wave acts centrally on the hole wall in the energy cumulative direction to form an initial crack, and then under the action of the jet of energy cumulative, the crack continues to propagate until it runs through. In the non-energy cumulative state, the crack propagates uniformly around the hole wall, forming irregular short cracks. The simulation is verified by the field test, and the law of crack propagation is the same with the simulation. Therefore, directional energy-concentrated presplitting blasting has good practicability in a roof presplitting operation. Full article
(This article belongs to the Special Issue Sustainable Development and Utilization of Coal Measures Resources)
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21 pages, 3650 KiB  
Article
Investigation into the Effect of Multi-Component Coal Blends on Properties of Metallurgical Coke via Petrographic Analysis under Industrial Conditions
by Lina Kieush, Andrii Koveria, Johannes Schenk, Kanay Rysbekov, Vasyl Lozynskyi, Heng Zheng and Azamat Matayev
Sustainability 2022, 14(16), 9947; https://doi.org/10.3390/su14169947 - 11 Aug 2022
Cited by 11 | Viewed by 1938
Abstract
The coalification rank of the coal blend components and their caking properties initially impact the coke’s quality. In part, the quality of coke depends on the technological parameters of the coke production technology, such as the method of blend preparation, the coking condition, [...] Read more.
The coalification rank of the coal blend components and their caking properties initially impact the coke’s quality. In part, the quality of coke depends on the technological parameters of the coke production technology, such as the method of blend preparation, the coking condition, the design features of the coke ovens, and the technique used for post-oven treatment. Therefore, to improve the coke quality, the main attention is paid to the quality of the coal blend. The petrographic analysis is the simplest and most reliable way to control coal quality indicators under industrial conditions. In this paper, the effect of nine industrial blends on coke quality using petrographic analysis has been studied. Additionally, this paper addresses the efficient use of coals and the preparation of coal mixtures under industrial conditions, which contributes to the sustainability of cokemaking. For the preparation of blends, 17 coals were used, for which, in addition to petrographic and proximate analyzes, the maximum thickness of the plastic layer was determined. Industrially produced cokes were analyzed for coke reactivity index (CRI), coke strength after reaction with CO2 (CSR), and Micum indices (M25 and M10). It has been established that the petrographic properties of coal blends are reliable parameters for assessing the quality of coke under conditions of an unstable raw material base, multi-component blends, and changes in coking regimes. Moreover, the research results have shown that to ensure the rational use of coals in the preparation of coal blends to achieve the required coke quality and consequently the sustainability of cokemaking, it is necessary to consider not only the mean reflectance of vitrinite but the proximate and caking properties of coals. Full article
(This article belongs to the Special Issue Sustainable Development and Utilization of Coal Measures Resources)
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14 pages, 25773 KiB  
Article
Research on the Key Technology of Gob-Side Entry Retaining by Roof Cutting for Thick and Hard Sandstone Roofs
by Chaowen Hu, Eryu Wang, Qian Li, Yilong Wang, Yongyuan Li and Xingfeng Sha
Sustainability 2022, 14(16), 9941; https://doi.org/10.3390/su14169941 - 11 Aug 2022
Cited by 5 | Viewed by 1131
Abstract
In order to ensure the application of gob-side entry retaining by roof cutting for thick and hard sandstone roofs, the key technology of pre-split blasting was studied. The LS-DYNA was used to analyze the blasting effect of the energy-gathering pipe. Using the methods [...] Read more.
In order to ensure the application of gob-side entry retaining by roof cutting for thick and hard sandstone roofs, the key technology of pre-split blasting was studied. The LS-DYNA was used to analyze the blasting effect of the energy-gathering pipe. Using the methods of theoretical analysis and numerical simulation, it was determined that the optimal cutting height was 16 m and the optimal cutting angle was 15°. The effect of pressure relief by roof cutting was verified by FLAC3D. It is proposed to use deep-hole loosening blasting to solve the problem of the sandstone with a thick hard roof being difficult to collapse. A group of loose blasting holes was designed to be arranged every 20 m in the gob-side roadway. The depth of the #1 blasthole was 47 m, and the angle to the horizontal direction was 20°; the depth of the #2 blasthole was 65 m, and the angle to the horizontal direction was 15°. A field test was carried out in the 7135 ventilation roadway of Qidong Coal Mine China. The on-site peeping results showed that the blasting with the energy-gathering pipe had a good effect of directional slitting. After deep-hole loosening blasting, the thick hard sandstone roof collapsed and filled the gob in time. The monitoring curves of the hydraulic support showed that the hydraulic support resistance of the working face in the side with roof cutting was much smaller than that of the side without roof cutting, and the effect of pressure relief by roof cutting was good. Full article
(This article belongs to the Special Issue Sustainable Development and Utilization of Coal Measures Resources)
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15 pages, 37091 KiB  
Article
Research on Joint Protection Layers and Gas Prevention Technology in Outburst Coal Seams
by Feng Zhang and Jinshan Zhang
Sustainability 2022, 14(14), 8859; https://doi.org/10.3390/su14148859 - 20 Jul 2022
Cited by 3 | Viewed by 1135
Abstract
Outburst closed distance coal seam distances are extremely difficult to mine, and are commonly involved in safety accidents in the process of mining. Based on the engineering background of the Wulan Coal Mine at the western margin of the Ordos Basin, this paper [...] Read more.
Outburst closed distance coal seam distances are extremely difficult to mine, and are commonly involved in safety accidents in the process of mining. Based on the engineering background of the Wulan Coal Mine at the western margin of the Ordos Basin, this paper presents a theoretical analysis, engineering analogies, and numerical simulations to determine the optimal mining sequence for the Wulan Coal Mine #7, #8, #2, and #3 coal seams. Floor penetration drilling was used to eliminate outbursts in the #7 and #8 coal seams, and gas control in the #2 and #3 coal seams was achieved using ground drilling to pump and release the pressured gas. We established a comprehensive management technology system for gas emissions from the short-distance joint protection layer in the outburst coal seams of Wulan Coal Mine, where pressure relief and drainage were carried out by drilling through the floor and surface drilling pressure relief extraction. Through field tests, the pre-drainage rate of the #2 coal seam in the Wulan Coal Mine was 66.8%, and the pre-drainage rate of the #3 coal seam was 68.1%. This shows that protective layer mining of the #7 and #8 coal seams combined with surface drilling to extract pressure-relief gas can protect the #2 and #3 coal seams. Full article
(This article belongs to the Special Issue Sustainable Development and Utilization of Coal Measures Resources)
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10 pages, 4192 KiB  
Article
New Insight into the Depositional Age of No. 6 Coal in Heidaigou Mine, Late Paleozoic Jungar Coalfield, Inner Mongolia, China
by Chao Liu, Xiangdong Chang, Beilei Sun and Fangui Zeng
Sustainability 2022, 14(10), 6297; https://doi.org/10.3390/su14106297 - 21 May 2022
Cited by 4 | Viewed by 1428
Abstract
Coal deposits can provide novel stratigraphic markers for reconstructing the evolution history of a sedimentary basin and correlating sedimentary successions. Age dating was conducted on zircons harvested from the No. 6 coal seam within the Heidaigou Mine, Inner Mongolia. Two-kilogram samples were taken, [...] Read more.
Coal deposits can provide novel stratigraphic markers for reconstructing the evolution history of a sedimentary basin and correlating sedimentary successions. Age dating was conducted on zircons harvested from the No. 6 coal seam within the Heidaigou Mine, Inner Mongolia. Two-kilogram samples were taken, and the recovered zircons were analyzed for U–Pb isotopic and rare earth elements (REE). The REE results of the zircon grains showed that all the zircon grains were enriched in heavy rare earth elements (HREE) but depleted in light rare earth elements (LREE). In addition, zircons from the No. 6 coal seam had strongly positive Ce (Ce/Ce* = 2.4–224.6) and strongly negative Eu anomalies (Eu/Eu* = 0.1–0.6). Combined with the clear oscillatory zones in the cathodoluminescence images, all the zircon grains of the No. 6 coal were characteristic of zircons with magmatic origins. The 206Pb/238U ages of 34 zircon grains produced a narrow age population of 303–286 Ma, with a weighted average age of 293.0 ± 1.5 Ma (mean-squared weighted deviation = 1.5). Therefore, we infer that the No. 6 coal in the Heidaigou Mine was deposited during the Early Permian, and the Carboniferous–Permian boundary should be located stratigraphically lower than the No. 6 coal. The zircon U–Pb geochronology is a useful tool to determine the depositional ages of non-marine-influenced coal. Full article
(This article belongs to the Special Issue Sustainable Development and Utilization of Coal Measures Resources)
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