RESEARCH ON STRESS EVOLUTION LAW AND FAILURE CHARACTERISTICS OF TOP COAL IN FULLY MECHANIZED CAVING OF EXTRA-THICK COAL SEAMS

被引：1
|
作者：
LI, Hong-Bin [1 ,2 ]
LI, Dong-Yin [1 ]
Wang, Hao [1 ]
LI, Zhen-Feng [1 ]
Wang, Shen [1 ]
Chen, Chun-Ling [1 ]
机构：
[1] Henan Polytech Univ, Sch Energy Sci & Engn, Jiaozuo, Peoples R China
[2] Henan Polytech Univ, Coll Chem & Chem Engn, Jiaozuo, Peoples R China
来源：
THERMAL SCIENCE | 2023年 / 27卷 / 1B期
基金：
国家重点研发计划;
关键词：
extra-thick coal seams; top coal caving; stress evolution; failure structure of top coal;
D O I：
10.2298/TSCI2301687L
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this study, based on the engineering background of the No. 8222 working face of the Tashan coal mine in Shanxi Province, China, true triaxial experiments were carried out on Geotechnical Consulting and Testing Systems rock mechanics testing machine using cubic coal samples, and the numerical simulation was conducted through the FLAC3D software. Moreover, the stress evolution law of different layers of extra-thick coal seams and the failure mechanism of top coal in the fully mechanized caving were investigated, and the failure structure model of top coal was established. The results show that there are differences in the prin-cipal stress values at different layers of the top coal.
引用
收藏
页码：687 / 695
页数：9
相关论文
共 50 条
  • [1] Overlying strata movement law and rockburst prevention & control for fully mechanized top coal caving face in extra-thick coal seams
    Rong, Hai
    He, Longyue
    Wang, Yadi
    Wei, Xiangzhi
    Wei, Shilong
    Yang, Suihan
    Li, Jincheng
    Chen, Linlin
    SCIENTIFIC REPORTS, 2025, 15 (01):
  • [2] Floor failure law of extra-thick coal seam in fully mechanized caving mining
    Guo G.
    Meitiandizhi Yu Kantan/Coal Geology and Exploration, 2022, 50 (08): : 107 - 115
  • [3] Research on the Redistribution Law of Lateral Mining Stress and the Bearing Characteristics of Section Coal Pillar in Extra-Thick Fully Mechanized Top-Coal Caving Mining
    Bu, Qingwei
    Tu, Min
    Fu, Baojie
    SHOCK AND VIBRATION, 2021, 2021
  • [4] Gas Distribution Law for the Fully Mechanized Top-Coal Caving Face in a Gassy Extra-Thick Coal Seam
    Wang, Wenlin
    Wang, Fangtian
    Zhao, Bin
    Li, Gang
    ADVANCES IN CIVIL ENGINEERING, 2018, 2018
  • [5] Numerical Simulation Study on Fully-Mechanized Top Coal Caving in Extra-Thick Coal Seam
    Lei, Wu-lin
    Li, Xingliang
    Chen, Yanfeng
    Duan, Weihua
    Chen, Jianhua
    6TH INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND CIVIL ENGINEERING, 2020, 455
  • [6] Flow of top coal and roof rock and loss of top coal in fully mechanized top coal caving mining of extra thick coal seams
    Ningbo Zhang
    Changyou Liu
    Peiju Yang
    Arabian Journal of Geosciences, 2016, 9
  • [7] Flow of top coal and roof rock and loss of top coal in fully mechanized top coal caving mining of extra thick coal seams
    Zhang, Ningbo
    Liu, Changyou
    Yang, Peiju
    ARABIAN JOURNAL OF GEOSCIENCES, 2016, 9 (06)
  • [8] Application of microseismic monitoring technology on fully mechanized top-coal caving face of extra-thick coal seam
    Huang, Q. G.
    Zhao, J.
    ROCK MECHANICS: ACHIEVEMENTS AND AMBITIONS, 2012, : 17 - 20
  • [9] Research on top coal caving technique in steep and extra-thick coal seam
    Zhang, Juguo
    Zhao, Zhiqiang
    Gao, Yang
    SECOND INTERNATIONAL CONFERENCE ON MINING ENGINEERING AND METALLURGICAL TECHNOLOGY (MEMT 2011), 2011, 2 : 145 - 149
  • [10] The Key Stratum Structure Morphology of Longwall Mechanized Top Coal Caving Mining in Extra-Thick Coal Seams: A Typical Case Study
    He, Fulian
    Li, Xiaobin
    He, Wenrui
    Zhao, Yongqiang
    Xu, Zhuhe
    Li, Quansheng
    ADVANCES IN CIVIL ENGINEERING, 2020, 2020
12345