Experiment research on overburden mining-induced fracture evolution and its fractal characteristics in ascending mining

详细信息    查看全文

• 作者：Cheng Wang (1)
  Nianchao Zhang (2) (3)
  Yafeng Han (1)
  Zuqiang Xiong (1)
  Deyu Qian (4)
  
  1. School of Energy Science and Engineering ; Henan Polytechnic University ; Jiaozuo ; Henan ; 454000 ; China
  2. School of Mines ; Key Laboratory of Deep Coal Resource Mining ; Ministry of Education ; China University of Mining and Technology ; Xuzhou ; Jiangsu ; 221116 ; China
  3. School of Earth Sciences ; University of Queensland ; St Lucia ; Queensland ; 4072 ; Australia
  4. Department of Earth Resources Engineering ; Faculty of Engineering ; Kyushu University ; Fukuoka ; 819-0395 ; Japan
  
• 关键词：Ascending mining ; Overburden strata ; Mining ; induced fracture evolution ; Fractal dimension
• 刊名：Arabian Journal of Geosciences
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：8
• 期：1
• 页码：13-21
• 全文大小：3,988 KB
• 参考文献：1. Chen YG, Qing MG (1994) Strata control around coal face in China. China University of Mining and Technology Press, Xuzhou
  2. Cheng YP, Yu QX (2007) Development of regional gas control technology for Chinese coalmines. J Min Saf Eng 3:253鈥?57
  3. Gu DZ (1995) Similar material and similar model. China University of Mining and Technology Press, Xuzhou
  4. Hu GZ, Wang HT, Li XH, Fan XG, Yuan ZG (2009) Numerical simulation of protection range in exploiting the upper protective layer with a bow pseudo-incline technique. Min Sci Technol 1:58鈥?4 CrossRef
  5. Li HC (1988) Similar simulation test for ground pressure. China University of Mining and Technology Press, Xuzhou
  6. Li DZ, Xia XC, Han JG (2005) Deep mine mining technology. China University of Mining and Technology Press, Xuzhou
  7. Liu TQ (1995) Influence of mining activities on mine rock mass and control engineering. J China Coal Soc 1:1鈥?
  8. Liu CW, Guo YF, Yao JM (2003) The development and problems of mining similar鈥攎eaning of developing three dimensional mining physical simulation experiment. China Min Mag 8:6鈥?
  9. Liu QS, Zhang H, Lin T (2004) Study on stability of deep rock roadway in coal mines. J Rock Mech Eng 21:3732鈥?737
  10. Liu HB, Cheng YP, Song JC et al (2009) Pressure relief, gas drainage and deformation effects on an overlying coal seam induced by drilling an extra-thin protective coal seam. Min Sci Technol 6:724鈥?29
  11. Ma ZG, Tu M, Ma JG et al (2008) Rock mass deformation characteristics for coal mining at remote lower protective. J Min Saf Eng 3:253鈥?57
  12. Mandelbrot BB (1982) The fractal geometry of nature. Freeman, San Francisco
  13. Qian MG, Shi PW (2003) Ground pressure and strata control. China University of Mining and Technology Press, Xuzhou
  14. Sarkheil H, Hassani H, Alinia F (2011) Fractures distribution modeling using fractal and multi-fractal鈥搉eural network analysis in Tabnak hydrocarbon field, Fars, Iran. Arab J Geosci 6:945鈥?56 CrossRef
  15. Tu SH, Ma WD, Wan ZJ et al (2010) Experimental method and measurement technique for ground control. China University of Mining and Technology Press, Xuzhou
  16. Wang C (2011) Study on control principle and key technologies for roof roadway stability of different zones in ascending mining condition. Doctoral Dissertation, China University of Mining and Technology
  17. Wang ZG, Zhou H-W, Xie HP (2009) Research on fractal characterization of mined crack network evolution in overburden rock stratum under deep mining. Rock Soil Mech 8:2403鈥?407
  18. Wang C, Zhang N, LI GC, Zhang NC (2011) De-stressed mining of multi-seams: surrounding rock control for mining influenced roadway in the overlying protected seam. Int J Min Sci Technol 2:159鈥?64
  19. Xie HP (1996) Fractal rock mechanics introduction. Science, Beijing
  20. Xie WB, Chen XX, Zheng BS (2005) Numerical simulation research and analysis of mining engineering problem. China University of Mining and Technology Press, Xuzhou
  21. Ye JP, Shi BVS, Zhang CC (1999) Coal reservoir permeability and its controlled factors in China. J China Coal Soc 2:118鈥?22
  22. Yu GM, Xie HP, Zhou HW et al (1998) Distribution law of cracks in structured rock mass and its experimental investigation. J Exp Mech 2:145鈥?54
  23. Yuan L (2009) Technique of coal mining and gas extraction without coal pillar in multi-seam with low permeability. J Coal Sci Eng 2:120鈥?28 CrossRef
  24. Zhang N, Zhang NC, Han CL et al (2013) Borehole stress monitoring analysis on advanced abutment pressure induced by Longwall Mining. Arab J Geosci. doi:10.1007/s12517-013-0831-7
  
• 刊物类别：Earth and Environmental Science
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-7538

文摘

The simulated material model was used to simulate the formation and distribution of overburden fractures induced by ascending mining. The fracture evolution law was revealed. The fractal geometry theory and MATLAB software were applied to analyze fractal characteristics of fracture network of overburden stratum. The results showed that the overburden failure evolution is trapezoidal, accompanied with collapse in layer group and the developing height of fractures discontinuously jumps; as the mining width increased, the fractal dimension of fracture network showed an overall ascending trend, presenting three stages, namely, fast dimension rising stage, slow dimension rising stage, and stable stage. In the caving zone, fracture zone, and bending zone, the development, propagation, and closure of fractures were asynchronous and inner similar. These achievements are important to roof roadway stability control and layout of gas drainage system and contribute to the simultaneous extraction theory of coal and gas by pressure relief.