Multiple factor sensitivity analysis of strata pressure behaviour in shallow coal seam mining

被引：0
|
作者：
Li J. [1 ]
Liu C. [1 ]
Zhao J. [2 ]
机构：
[1] School of Mines, Key Laboratory of Deep Coal Resource Mining, China University of Mining & Technology, Xuzhou, 221116, Jiangsu
[2] Inner Mongolia Zhungeer Qi Yun-fei Mining Co Ltd, Zhungeer Qi, 010400, Inner Mongolia
来源：
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2016年 / 33卷 / 05期
关键词：
Influence factors; Loading key strata; Sensitivity analysis; Shallow coal seam; Strata pressure behavior degree;
D O I：
10.13545/j.cnki.jmse.2016.05.014
中图分类号：
学科分类号：
摘要：
Considering various factors affecting strata pressure behavior degree of shallow coal seam, theoretical analysis, numerical simulation and field measurement were adopted to analyze the influence of such factors as seam depth and thickness and location of loading key strata on the strata pressure behavior. There results have shown that the thickness of loading key strata has the greatest impact on strata pressure behavior than the seam depth; the distance from the loading key strata to coal seams has the least impact. The intensity of pressure behavior is determined by the location of loading key strata. When the ratio of distance from the loading key strata to coal seams to the depth of the coal seam, the mining face had strong strata pressure behavior, when η>0.35 the degree was less strong. Bearing characteristics of loading key strata and mining face behavior characteristics were analyzed combined with specific geological conditions of shallow coal seam. © 2016, Editorial Board of Journal of Mining & Safety Engineering. All right reserved.
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页码：853 / 859
页数：6
相关论文
共 14 条
  • [1] Xu J., Zhu W., Wang X., Et al., Classification of key strata structure of overlying strata in shallow coal seam, Journal of China Coal Society, 34, 7, pp. 865-870, (2009)
  • [2] Huang Q., Ground pressure behavior and definition of shallow seams, Chinese Journal of Rock Mechanics and Engineering, 21, 8, pp. 1174-1177, (2002)
  • [3] Huang Q., Hu H., Liu Y., Et al., Determination of proper support resistance in working face of shallowly buried coal seam, Journal of Mining & Safety Engineering, 26, 3, pp. 304-307, (2009)
  • [4] Hou Z., Study on key stratum in shallow seam, Journal of China Coal Society, 24, 4, pp. 359-363, (1999)
  • [5] Hou Z., Wu W., Xiao M., Research on relation of "support and surrounding-rock" in shallow seam covered with thick soil stratum and thin basic rock, Journal of Hunan University of Science & Technology (Natural Science Edition), 22, 1, pp. 9-12, (2007)
  • [6] Li F., Zhang Y., Xu L., Influence of ratio of basement and loadings on mining face rock pressure in thin basement rock thick surface soil, Journal of China Coal Society, 38, 10, pp. 1749-1755, (2013)
  • [7] Hou Z., Study on application of combinatorial key stratum theory and parameters determining, Journal of China Coal Society, 26, 6, pp. 611-615, (2001)
  • [8] Xu J., Ju J., Structural morphology of key stratum and its influence on strata behaviors in fully-mechanized face with super-large mining height, Chinese Journal of Rock Mechanics and Engineering, 30, 8, pp. 1547-1556, (2011)
  • [9] Li F., Liang B., Roof activity and its controlling in shallow buried seam, Ground Pressure and Strata Control, 22, 4, (2005)
  • [10] Wang Y., Integral method of multiple factor sensitivity analysis, Journal of Yunnan Polytechnic University, 15, 2, pp. 75-78, (1999)
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