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Processes
Special Issues
Monitoring, Process Control, Simulation, and Optimization in Coal Mining
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Monitoring, Process Control, Simulation, and Optimization in Coal Mining

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Process Control and Monitoring".

Deadline for manuscript submissions: 21 August 2024 | Viewed by 527

Special Issue Editors

Dr. Yangyang Guo

E-Mail Website
Guest Editor Assistant
State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Interests: mine safety; gas flow theory in coal; dynamic disasters in coal mines
Dr. Bo Li

E-Mail Website
Guest Editor
State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China
Interests: coal mine disaster prevention and control; occupational health
Special Issues, Collections and Topics in MDPI journals
Dr. Wei Zhao

E-Mail Website
Guest Editor
School of Emergency Management and Safety Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China
Interests: coal mining safety; gas diffusion; ECBM; emergency management and science
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Coal plays an important role in the world economy and industrial development. Shallow coal resources have been gradually exhausted, and coal mining has entered the stage of deep mining. In this environment, the geological conditions are more complex, with high temperatures, high ground stress, high gas pressure and low permeability, which pose a threat to the safety of workers mining coal. Problems such as coal and gas outburst, rock burst pressure and gas dust explosion are more likely to occur in the deep mining stage. It is thus of great significance to study the underlying mechanisms of coal mine disasters and how to prevent them for the safe and efficient mining of coal resources.

This Special Issue solicits original research articles and review papers reflecting the advances in research concerning process safety in coal mining. Topics of interest include, but are not limited to:

  • Mechanisms and preventions of dynamic disasters;
  • Prevention of coal mine gas and fire coupling disasters;
  • Gas extraction technology of low permeability coal seams;
  • Coal mine gas explosions;
  • Coal bed gas adsorption and desorption and diffusion.

Dr. Bo Li
Dr. Wei Zhao
Guest Editors

Dr. Yangyang Guo
Guest Editor Assistant

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. Processes is an international peer-reviewed open access monthly 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

  • mechanisms and preventions
  • coal seams
  • gas extraction technology
  • coal bed gas adsorption
  • coal mine gas explosions
  • process control

Published Papers (1 paper)

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Research

17 pages, 6075 KiB  
Article
Study on the Damage Mechanism of Coal under Hydraulic Load
by Hongyan Li, Yaolong Li, Weihua Wang, Yang Li, Zhongxue Sun, Shi He and Yongpeng Fan
Processes 2024, 12(5), 925; https://doi.org/10.3390/pr12050925 - 1 May 2024
Viewed by 285
Abstract
Hydraulic fracturing is extensively utilized for the prevention and control of gas outbursts and rockbursts in the deep sections of coal mines. The determination of fracturing construction parameters based on the coal seam conditions and stress environments merits further investigation. This paper constructs [...] Read more.
Hydraulic fracturing is extensively utilized for the prevention and control of gas outbursts and rockbursts in the deep sections of coal mines. The determination of fracturing construction parameters based on the coal seam conditions and stress environments merits further investigation. This paper constructs a damage analysis model for coal under hydraulic loads, factoring in the influence of the intermediate principal stress, grounded in the unified strength theory analysis approach. It deduces the theoretical analytical equation for the damage distribution of a coal medium subjected to small-flow-rate hydraulic fracturing in underground coal mines. Laboratory experiments yielded the mechanical parameters of coal in the study area and facilitated the fitting of the intermediate principal stress coefficient. Leveraging these datasets, the study probes into the interaction between hydraulic loads and damage radius under assorted influence ranges, porosity, far-field crustal stresses, and brittle damage coefficients. The findings underscore that hydraulic load escalates exponentially with the damage radius. Within the variable range of geological conditions in the test area, the effects of varying influence range, porosity level, far-field stress, and brittle damage coefficient on the outcomes intensify one by one; a larger hydraulic load diminishes the impact of far-field stress variations on the damage radius, inversely to the influence range, porosity, and brittle damage. The damage radius derived through the gas pressure reduction method in field applications corroborates the theoretical calculations, affirming the precision of the theoretical model. These findings render pivotal guidance for the design and efficacy assessment of small-scale hydraulic fracturing in underground coal mines. Full article
(This article belongs to the Special Issue Monitoring, Process Control, Simulation, and Optimization in Coal Mining)
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