Optimal location of terminal line in sublevel caving face with suspend-shift support in thinner thick-seam

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• 作者：Xiang-qian Wang (1)
  Xiang-rui Meng (1)
  Zhao-ning Gao (1)
  Zeng-hui Liu (1)
  
• 关键词：thinner thick ; seam ; suspend ; shift support ; sublevel caving face ; terminal line
• 刊名：Journal of Coal Science and Engineering (China)
• 出版年：2008
• 出版时间：December 2008
• 年：2008
• 卷：14
• 期：4
• 页码：600-603
• 全文大小：438KB
• 参考文献：1. , , , [J]. 2007, 35(4): 12-5. Zha Wenhua, Xie Guangxiang, Hua Xinzhu, et al. Strike surrounding rock pressure distribution law and terminal mining line location setting for fully mechanized top coal caving mining face[J]. Coal Science and Technology, 2007, 35(4): 12-5.
  2. Steve Zou D H, Yu Chuxin, Xian Xuefu. Dynamic nature of coal permeability ahead of a longwall face[J]. International Journal of Rock Mechanics and Mining Sciences, 1999, 36: 693-99. CrossRef
  3. Unver B, Yasitli N E. Modelling of strata movement with a special reference to caving mechanism in thick seam coal mining[J]. International Journal of Coal Geology, 2006, 66: 227-52. CrossRef
  4. , , . [J]. , 2007, 38(4): 36-8. Meng Xiangrui, Gao Zhaoning, Wang Xiangqian. Ground pressure monitoring of top caving coal mining with movable support in relatively thin thick-seam[J]. Safety in Coal Mining, 2007, 38(4): 36-8.
  
• 作者单位：Xiang-qian Wang (1)
  Xiang-rui Meng (1)
  Zhao-ning Gao (1)
  Zeng-hui Liu (1)
  
  1. School of Energy and Safety, Anhui University of Science and Technology, Huainan, 232001, China
  
• ISSN：1866-6566

文摘

According to the geological and mining technical conditions of No.18128 sublevel caving face with suspend-shift support, the first working face of the working area, the distribution laws of abutment pressure were studied by jointly employing FlAC3D numerical simulations and field tests. With the full consideration of these laws and the service timelimit of the mining district, the optimal location of the terminal mining line, should be 60 m away from the W4-B8 track dip, which was 20 m shorter than the 80 m distance determined according to traditional experiences. The retained coal safety pillar for the protecting of dips, already proved by the industrial practice, can not only improve the rate of coal recovery and satisfy the subsequent service requirement for the following working faces, but also decrease the maintaining expenditure and thus increase profits.