Home > Papers

 
 
Numerical simulation of coal seam joints and stiffness effects on coal bumps
Jiang Yaodong *,Zhao Yixin #,Zhu Jie
China university of mining & technology
*Correspondence author
#Submitted by
Subject:
Funding: 教育部博士点基金(No.20030290001)
Opened online:23 March 2006
Accepted by: none
Citation: Jiang Yaodong,Zhao Yixin,Zhu Jie .Numerical simulation of coal seam joints and stiffness effects on coal bumps[OL]. [23 March 2006] http://en.paper.edu.cn/en_releasepaper/content/5876
 
 
The numerical approach to translatory coal bumps analysis is used to examine the effects of joint and coal seam stiffness on the outburst velocity, deformation magnitude of the opening wall and plastic zone length in the coal seam. A series of tests are performed by varying the joint dip angles, spacing normal to joint tracks, joint block size and coal seam stiffness ratio to the surrounding rock. Results of joint and coal seam stiffness effects analysis indicate that joint dip angle, interval spacing, block size and coal seam stiffness ratio have profound influences on coal bumps. The increasing of interval spacing and joint block size can generate larger roadway deformation, lower roadway deformation velocity and longer plastic region in the coal seam. Higher stiffness ratio can also result in larger deformation, higher deformation velocity of opening wall. Coal bumps conditions deteriorate as the dip angle rotated to 90 degree or the elastic zones disappear in the whole active zone of coal seam for different spacing distributions.
Keywords:Coal bumps, numerical simulation ,joint, translatory
 
 
 

For this paper

  • PDF (0B)
  • ● Revision 0   
  • ● Print this paper
  • ● Recommend this paper to a friend
  • ● Add to my favorite list

    Saved Papers

    Please enter a name for this paper to be shown in your personalized Saved Papers list

Tags

Add yours

Related Papers

Statistics

PDF Downloaded 688
Bookmarked 0
Recommend 5
Comments Array
Submit your papers