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Mechanism of coal-gas dynamic disasters caused by the superposition of static and dynamic loads and its control technology

Journal Article


Abstract


  • Due to the coal mine safety production being seriously affected by the coal-gas dynamic disasters, the superposition mechanism of static and dynamic loads was proposed, which includes three types of dynamic disasters: high static load, high dynamic load and low critical load. The expressions of static loads, dynamic loads and gas pressures were established. Besides, the theory and technology of monitoring and prevention of coal-gas dynamic disasters were summarized. As for rockburst, the main monitoring methods includes: regional and classified monitoring, microseismic monitoring, electromagnetic radiation, elastic wave CT, shock wave CT and so on. While the common monitoring measures of outburst are drilling hole gas emission rate, R index and electromagnetic radiation and so on. Furthermore, the major means of prevention are as follows: the intensity weakening theory and method, strong-soft-strong structure for controlling roadway surrounding rock, supporting system resisting to dynamic and static loads and regional outburst prevention technology. Moreover, the future research directions of coal-gas dynamic disasters are: 1) the superposition mechanism of static and dynamic loads can be further quantitatively represented. 2) the monitoring and warning index system of coal-gas dynamic disasters should be established. 3) the prevention methods of rockburst and outburst can be organically combined.

UOW Authors


  •   Dou, Linming (external author)
  •   He, Xueqiu (external author)
  •   Ren, Ting
  •   He, Jiang (external author)
  •   Wang, Zhengyi (external author)

Publication Date


  • 2018

Citation


  • Dou, L., He, X., Ren, T., He, J. & Wang, Z. (2018). Mechanism of coal-gas dynamic disasters caused by the superposition of static and dynamic loads and its control technology. Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 47 (1), 48-59.

Scopus Eid


  • 2-s2.0-85043704373

Number Of Pages


  • 11

Start Page


  • 48

End Page


  • 59

Volume


  • 47

Issue


  • 1

Place Of Publication


  • China

Abstract


  • Due to the coal mine safety production being seriously affected by the coal-gas dynamic disasters, the superposition mechanism of static and dynamic loads was proposed, which includes three types of dynamic disasters: high static load, high dynamic load and low critical load. The expressions of static loads, dynamic loads and gas pressures were established. Besides, the theory and technology of monitoring and prevention of coal-gas dynamic disasters were summarized. As for rockburst, the main monitoring methods includes: regional and classified monitoring, microseismic monitoring, electromagnetic radiation, elastic wave CT, shock wave CT and so on. While the common monitoring measures of outburst are drilling hole gas emission rate, R index and electromagnetic radiation and so on. Furthermore, the major means of prevention are as follows: the intensity weakening theory and method, strong-soft-strong structure for controlling roadway surrounding rock, supporting system resisting to dynamic and static loads and regional outburst prevention technology. Moreover, the future research directions of coal-gas dynamic disasters are: 1) the superposition mechanism of static and dynamic loads can be further quantitatively represented. 2) the monitoring and warning index system of coal-gas dynamic disasters should be established. 3) the prevention methods of rockburst and outburst can be organically combined.

UOW Authors


  •   Dou, Linming (external author)
  •   He, Xueqiu (external author)
  •   Ren, Ting
  •   He, Jiang (external author)
  •   Wang, Zhengyi (external author)

Publication Date


  • 2018

Citation


  • Dou, L., He, X., Ren, T., He, J. & Wang, Z. (2018). Mechanism of coal-gas dynamic disasters caused by the superposition of static and dynamic loads and its control technology. Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology, 47 (1), 48-59.

Scopus Eid


  • 2-s2.0-85043704373

Number Of Pages


  • 11

Start Page


  • 48

End Page


  • 59

Volume


  • 47

Issue


  • 1

Place Of Publication


  • China