Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (11): 1628-1633.DOI: 10.12068/j.issn.1005-3026.2017.11.022

• Resources & Civil Engineering • Previous Articles     Next Articles

Numerical Simulation of the Flow Solid Coupling Effect in the Seam Roadway Pre-exhaust Gas Zone

ZHANG Wei1, XU Kai-li1, LEI Yun2,3   

  1. 1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819,China; 2. School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China; 3. Shenyang Research Institute, China Coal Technology & Engineering Group Co., Shenyang 110016, China.
  • Received:2016-05-18 Revised:2016-05-18 Online:2017-11-15 Published:2017-11-13
  • Contact: ZHANG Wei
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Abstract: The gas emission law during excavation in coal mining is the fundamentals of prevention and control of gas disasters. For the gas emission law in the study, there is no accurate method to determine the problem of pre-exhaust gas zone width of seam roadway. Based on the theory of gas flow and coal and rock deformation, the gas flow equation of gas-containing coal and rock and the coal and rock roadway deformation equation were established, the flow solid coupling mathematical model of the seam roadway pre-exhaust gas zone was established as well. The Qinshui mining area excavated roadway was taken as an example of numerical simulation to obtain the characteristics of temporal and spatial evolution of gas-containing coal and rock roadway damage. Based on the tracing principle, the method of measuring the pre-exhaust gas zone width of the seam roadway was proposed, and the measured results were consistent with that of the numerical calculation. The research results help to solve the problem of prediction accuracy of gas emission in coal working face.

Key words: seam roadway, gas prediction, pre-exhaust gas, flow solid coupling, tracer gas

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