Study on a High-Efficiency Mining Technology System for Gas Outburst in Coal Seams-Example of an H Coal Mine

被引:3
作者
Pang, Chuming [1 ]
Shi, Yongkui [1 ]
Wang, Xin [2 ]
Li, Benzheng [1 ]
Luan, Hengjie [1 ]
机构
[1] Shandong Univ Sci & Technol, Coll Energy & Min Engn, Qingdao 266590, Peoples R China
[2] Shandong Univ, Coll Civil Engn & Hydraul Engn, Jinan 250100, Peoples R China
关键词
gas outburst; coal seam; green mining; gob-side entry retaining; layer-by-layer gas extraction; PROTECTIVE SEAM; EXTRACTION; DISASTERS; PRESSURE; SCHEME;
D O I
10.3390/min12070795
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
Coal will continue to play an important role in China's economic development and social development in the coming decades. However, due to the complex distribution conditions of coal resources, the mining of coal resources is subject to various restrictions. Coal and gas outburst is an important issue in coal mining, and the threat to the mining of coal resources caused by high gas outburst activity has been receiving more attention. In order to solve the problems related to safe and efficient mining under coal seams with gas outburst, such as mining difficulties, large amounts of work, resource waste, no guaranteed gas treatment time, and low economic efficiency, it is necessary to innovate mining technology and methods for managing gas outburst in coal seams to improve the efficiency of coal mines and to solve the above problems. This study proposes a green mining technical method system known as the "L-H method", which is applicable to the safe and efficient mining of coal seams with gas outburst based on combined theoretical analysis and numerical simulation. The following research results are achieved: (1) The "L-H method" is proposed, and a mining area model of coal seams with gas outburst is established. The specific details of the method and the implementation process are introduced. (2) Examples of H coal mine applications are presented, and the effects of the implementation of the "L-H method" are analyzed and summarized through mine pressure observations from roadways, and it is concluded that the implementation of top-cutting and pressure-relief technology has a good control effect on the roadway-surrounding rock and that gas extraction reaches the national standard of less than 8 m(3)/t for protrusion prevention; this ensures safety and also achieves efficient mining. This study will provide a good reference for the implementation of green mining methods to similar coal and gas outburst mines.
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页数:17
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共 30 条
  • [1] [Anonymous], 1992, J. China Coal Soc
  • [2] Technical scheme and application of pressure-relief gas extraction in multi-coal seam mining region
    Chang Xiaocun
    Tian Hui
    [J]. INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2018, 28 (03) : 483 - 489
  • [3] Coal and gas outburst dynamic system
    Fan Chaojun
    Li Sheng
    Luo Mingkun
    Du Wenzhang
    Yang Zhenhua
    [J]. INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY, 2017, 27 (01) : 49 - 55
  • [4] Identifying sources of coal spontaneous heating in mine workings using aerogas control automatic systems
    Gamiy, Yuriy
    Kostenko, Viktor
    Zavialova, Olena
    Kostenko, Tetiana
    Zhurbynskyi, Dmytro
    [J]. MINING OF MINERAL DEPOSITS, 2020, 14 (01): : 120 - 127
  • [5] Long-hole destress blasting for rockburst control during deep underground coal mining
    Konicek, Petr
    Soucek, Kamil
    Stas, Lubomir
    Singh, Rajendra
    [J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, 2013, 61 : 141 - 153
  • [6] Elaborating a scheme for mine methane capturing while developing coal gas seams
    Koroviaka, Yevhenii
    Pinka, Jan
    Tymchenko, Svitlana
    Rastsvietaiev, Valerii
    Astakhov, Vitalii
    Dmytruk, Olena
    [J]. MINING OF MINERAL DEPOSITS, 2020, 14 (03): : 21 - 27
  • [7] Mining thin sub-layer as self-protective coal seam to reduce the danger of coal and gas outburst
    Li, Dingqi
    [J]. NATURAL HAZARDS, 2014, 71 (01) : 41 - 52
  • [8] A new technique for preventing and controlling coal and gas outburst hazard with pulse hydraulic fracturing: a case study in Yuwu coal mine, China
    Li, Quangui
    Lin, Baiquan
    Zhai, Cheng
    [J]. NATURAL HAZARDS, 2015, 75 (03) : 2931 - 2946
  • [9] Li Y. Q., 2020, SAF COAL MIN, V51, P77
  • [10] Li Y-F., 2012, J MINING SAFETY ENG, V29, P357, DOI DOI 10.13225/J.CNKI.JCCS.2012.06.015