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Sustainability in the Mechanism and Prevention of Coal–Rock Dynamic Disaster and Rock Engineering

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

Deadline for manuscript submissions: 10 November 2024 | Viewed by 3087

Special Issue Editors

Dr. Yubing Liu

E-Mail Website
Guest Editor
School of Safety Engineering, China University of Mining and Technology, Beijing 100083, China
Interests: rock mechanics; ECBM; safety engineering
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dongming Zhang

E-Mail Website
Guest Editor
1. School of Resources and Safety Engineering, Chongqing University, Chongqing 400030, China
2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400030, China
Interests: coal and gas co-extraction in deep underground coal mines; prevention of coal-rock dynamic disaster; low-permeability coal seam exploitation; carbon dioxide fracturing
Dr. Shan Yin

E-Mail Website
Guest Editor
School of Safety Engineering, China University of Mining & Technology, Xuzhou 221116, China
Interests: geophysical response and monitoring of magnetic field; electromagnetic radiation; infrared radiation; acoustic emission of coal and rock dynamic disasters; research and development of experiment; theory and instrument for monitoring the electromagnetic effects of coal and rock failure

Special Issue Information

Dear Colleagues,

There are numerous deep-underground projects worldwide, such as deep-underground coal mining, deep-buried tunnel construction, and deep-underground laboratories. The stress, fracture network, and fluid–solid coupling around the deep underground coal and rock structure become more complex with the increasing depth. Ensuring the safety, stability, and sustainability of deep underground engineering is becoming a new challenge to both researchers and engineers. There has been a major demand to prevent and control coal–rock dynamic disasters in deep underground engineering.

During the development of deep underground engineering, the safety, stability and sustainability of coal and rock mass is the main concern. The aim of this Special Issue is to attract more attentions and discussion on the sustainability of the mechanisms and prevention of coal–rock dynamic disaster and rock engineering.

This research topic aims to provide researchers with an opportunity to conduct a broader scientific and technological discussion on sustainability in mechanism and prevention of coal–rock dynamic disaster and rock engineering.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • coal and rock dynamic disaster;
  • sustainable coal and rock disaster prevention and control;
  • coal and rock instability mechanism;
  • coal and rock fluid-solid interaction;
  • coal and rock fluid flow characteristics;
  • sustainable experimental coal and rock testing;
  • disaster evolution process and mechanism;
  • risk identification and evaluation;
  • sustainable monitoring and early warning.

Original research and review articles are both welcome.

We look forward to receiving your contributions.

Dr. Yubing Liu
Prof. Dr. Dongming Zhang
Dr. Shan Yin
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 and rock dynamic disaster
  • coal and rock disaster prevention and control
  • coal and rock instability mechanism
  • coal and rock fluid–solid interaction
  • coal and rock fluid flow characteristics
  • experimental coal and rock testing
  • disaster evolution process and mechanism
  • risk identification and evaluation
  • monitoring and early warning

Published Papers (4 papers)

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Research

16 pages, 1639 KiB  
Article
Promoting Sustainable Coal Gas Development: Microscopic Seepage Mechanism of Natural Fractured Coal Based on 3D-CT Reconstruction
by Chunwang Zhang, Zhixin Jin, Guorui Feng, Lei Zhang, Rui Gao and Chun Li
Sustainability 2024, 16(11), 4434; https://0-doi-org.brum.beds.ac.uk/10.3390/su16114434 - 23 May 2024
Viewed by 320
Abstract
Green mining is an effective way to achieve sustainable development in the coal industry. Preventing coal and gas outburst dynamic disasters are essential for ensuring sustainable and safe mining. The numerous microscopic pores within the coal serve as the primary storage space for [...] Read more.
Green mining is an effective way to achieve sustainable development in the coal industry. Preventing coal and gas outburst dynamic disasters are essential for ensuring sustainable and safe mining. The numerous microscopic pores within the coal serve as the primary storage space for gas, making it critical to explore the structural distribution and seepage characteristics to reveal the disaster mechanism. Under mining stress, gas within the micropores of the coal migrates outward through cracks, with these cracks exerting a significant control effect on gas migration. Therefore, this study focuses on utilizing natural fractured coal bodies as research objects, employing a micro-CT imaging system to conduct scanning tests and digital core technology to reconstruct sample pore and fracture structures in three dimensions, and characterizing the pores, cracks, skeleton structure, and connectivity. A representative elementary volume (REV) containing macro cracks was selected to establish an equivalent model of the pore network, and a seepage simulation analysis was performed using the visualization software. Revealing the seepage characteristics of fractured coal mass from a microscopic perspective. The research results can provide guidance for gas drainage and dynamic disaster early warning in deep coal mines, thus facilitating the sustainable development of coal mining enterprises. Full article
(This article belongs to the Special Issue Sustainability in the Mechanism and Prevention of Coal–Rock Dynamic Disaster and Rock Engineering)
24 pages, 12969 KiB  
Article
Study on the Partial Paste Backfill Mining Method in a Fully Mechanized Top-Coal Caving Face: Case Study from a Coal Mine, China
by Zhaowen Du, Deyou Chen, Xuelong Li, Yong Jian, Weizhao Zhang, Dingding Zhang and Yongfeng Tian
Sustainability 2024, 16(11), 4393; https://0-doi-org.brum.beds.ac.uk/10.3390/su16114393 - 22 May 2024
Viewed by 330
Abstract
Paste backfill mining is an significant part of green coal mining, which can improve resource utilization and extend the service life of mines. It is important for solving the “three under, one above” mining problem and avoiding industrial wastes such as coal gangue [...] Read more.
Paste backfill mining is an significant part of green coal mining, which can improve resource utilization and extend the service life of mines. It is important for solving the “three under, one above” mining problem and avoiding industrial wastes such as coal gangue and fly ash that occupy farmland and pollute the environment. To address the difficult filling problem of a fully mechanized top-coal caving face (FMT-CCF), a new method of partial paste backfill mining is herein proposed. First, the partial paste backfill mining method and implementation steps of the FMT-CCF are introduced in detail. Then, the mechanistic model of the roof beam in partial paste backfill mining is established. Then, the filling structural factors on the filling effect of the 42105 FMT-CCF are determined. Dependent on the assay of the migration law of overlying stratum after filling, numerical simulation analysis is used to research the feature effect of the main filling structural factors on the filling effect. Finally, the paste filling rate, filling width, and filling strength suitable for the 42105 FMT-CCF are obtained. When the filling rate reaches 100%, a significant alteration takes place, resulting in the efficient decrease of the overlying rock stress arch shell’s height. As the width of the filling body expands from 10 m at each end to 20 m, the stress arch of the overlying rock experiences maximum reduction, specifically decreasing by approximately 14 m. When the strength of the filling body is greater than 0.4 GPa, the filling effect is better. This study has important guidance and reference significance for the partial paste backfill of FMT-CCF in thick seam mining. Full article
(This article belongs to the Special Issue Sustainability in the Mechanism and Prevention of Coal–Rock Dynamic Disaster and Rock Engineering)
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15 pages, 6271 KiB  
Article
Promoting Sustainable Coal Mining: Investigating Multifractal Characteristics of Induced Charge Signals in Coal Damage and Failure Process
by Jinguo Lyu, Shixu Li, Yishan Pan and Zhi Tang
Sustainability 2024, 16(8), 3127; https://0-doi-org.brum.beds.ac.uk/10.3390/su16083127 - 9 Apr 2024
Viewed by 595
Abstract
Monitoring and preventing coal–rock dynamic disasters are essential for ensuring sustainable and safe mining. Induced charge monitoring, as a geophysical method, enables sustainable monitoring of coal–rock deformation and failure. The induced charge signal contains crucial information regarding damage evolution, making it imperative and [...] Read more.
Monitoring and preventing coal–rock dynamic disasters are essential for ensuring sustainable and safe mining. Induced charge monitoring, as a geophysical method, enables sustainable monitoring of coal–rock deformation and failure. The induced charge signal contains crucial information regarding damage evolution, making it imperative and important to explore its temporal characteristics for effective monitoring and early warnings of dynamic disasters in deep mining. This paper conducted induced charge monitoring tests at different loading rates, investigating the multifractal characteristics of induced charge signals during the early and late stages of loading. It proposed the maximum generalized dimension D(q)max, multifractal spectrum width Δα, and height difference Δf as multifractal parameters for induced charge signals. Additionally, quantitative characterization of coal damage was performed, studying the variation patterns of signal multifractal characteristic parameters with coal damage evolution. This study revealed the induced charge signal of the coal body multifractal characteristics in the whole loading process. In the late loading stage, the double logarithmic curve demonstrated some nonlinearity compared to the previous period, indicating the higher non-uniformity of the induced charge time series. D(q)max and Δα in the late loading stage were higher than those in the early stage and increased with loading rates. As coal damage progressed, there were significant jumps of D(q)max in both the early and late stages of damage, with larger jumps indicating richer fracture events in the coal. The width Δα showed an overall trend of increase–decrease–increase with coal damage evolution, while the height difference Δf fluctuated around zero in the early stage of damage development but increased significantly during severe damage and destruction. By studying the multifractal characteristics of induced charge signals, this study provides insights for the early identification of coal–rock dynamic disasters. Full article
(This article belongs to the Special Issue Sustainability in the Mechanism and Prevention of Coal–Rock Dynamic Disaster and Rock Engineering)
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25 pages, 11241 KiB  
Article
Study on the Influence of Mining Stress on the Sustainable Utilization of Floor Roadway in Qinan Coal Mine
by Yiqi Chen, Huaidong Liu, Changyou Liu and Shibao Liu
Sustainability 2024, 16(7), 2905; https://0-doi-org.brum.beds.ac.uk/10.3390/su16072905 - 30 Mar 2024
Viewed by 552
Abstract
Aiming at the problem of large deformations and difficult maintenance of cross-mining floor roadways, taking the track transportation roadway of the cross-mining east wing floor in Qinan Coal Mine as the engineering background, the stress field distribution of mining stress in floor strata [...] Read more.
Aiming at the problem of large deformations and difficult maintenance of cross-mining floor roadways, taking the track transportation roadway of the cross-mining east wing floor in Qinan Coal Mine as the engineering background, the stress field distribution of mining stress in floor strata and surrounding rock of floor roadway during the cross-mining process of the working face is studied by combining theoretical analysis with numerical simulation. The results show that the influence of mining stress on the vertical stress of floor strata is reflected in the stress-increasing area in front of the coal wall and the stress-decreasing area in the rear of the coal wall. With the increase in the depth of the floor strata, the peak value of the vertical stress gradually decreases, and the distance from the peak value of the vertical stress to the coal wall and the influence range of the vertical stress gradually increases. When the width of the coal pillar is greater than the influence range of advance abutment pressure of the working face, the development speed of the plastic zone is slow. When the roadway is located in the influence range of advance abutment pressure, the plastic zone of the roadway’s surrounding rock develops rapidly. When the working face crosses the floor roadway more than 10 m, the depth of the plastic zone of the surrounding rock of the roadway is no longer increased; the siltstone above the roadway is the key layer of fracturing, and the deformation of the roadway has been effectively improved after hydraulic fracturing. Through the analysis of numerical simulation results, the fracturing scheme has a significant effect on the stability control of the surrounding rock of the cross-mining floor roadway. This study has certain guiding significance for the maintenance and sustainable utilization of floor roadways in the cross-mining process, which is conducive to ensuring the sustainable mining of underground coal and the safety of personnel and equipment and is of great significance to the sustainable development of the coal mining industry. Full article
(This article belongs to the Special Issue Sustainability in the Mechanism and Prevention of Coal–Rock Dynamic Disaster and Rock Engineering)
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