Simulation Analysis of Surface Deformation by Strip Replacement Mining in the Short-Distance Thin Coal Seam

Abstract:

The strip replacement mining in short-distance thin coal seam is one of the effective methods controlling displacement deformation of overlying strata and surface subsidence in coal mining under buildings and railroads and water bodies. The method has a great theoretical significance and application value by increasing recovery rate of coal resources and cutting down the effect of coal mining on environment and surface of mining area. The numerical simulation method is adopted to study the surface deformation characteristics by the strip replacement mining in short-distance thin coal seam. Such conclusions are drawn as follows: the strip project of forty meters mining with forty meters reserving is quite suitably selected while half of mining rate; ten meters in replacement width of coal pillar is relatively optimum; the feasibility of the strip replacement mining technology is verified by the simulation. Therefore, the strip replacement mining technology has provided one kind of new thought to coal mining under buildings and railroads and water bodies.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 193-197
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.193
• Online since: May 2011
• Authors: Pei Sen Zhang, Wei Yan, Wen Quan Zhang
• Keywords: Numerical Simulation, Replacement Mining, Short-Distance Thin Coal Seam, Strip Coal Pillar, Surface Deformation

References

[1] Rui Chengqun. Comprehensive Governance of Surface Subsidence by Coal Mining [J]. China New Technologies and Products, 2010, 12:121-122.

[2] Guo Wenbin, Deng Gezhong, Zhou Youfeng. Study and Application of Nonlinear Theory of Strip Mining[M]. China, Xuzhou: China University of Mining And Technology Press, 31-33, 2005.

[3] Yuan Liming Wang Jinzhuang. Analysis for Strata Movement in Strip-and-pillar Mining [J]. Chinese Journal of Rock Mechanics and Engineering, 1990, 9(2):147-153.

[4] Hu Bingnan, Yuan Liang. Analysis of the main influence factors of subsidence due to strip mining and the optimization design [J]. Coal Mining Technology, 2000, 4:24-27.

[5] State Administration of Coal Mine. Settings of coal pillar and mining discipline of coal under building and water body and railway and primary roadway[M]. Beijing: China Coal Industry Publishing House, 2000.

[6] Guo Guangli; Wang Yuehan; Ma Zhanguo. A New Method for Ground Subsidence Control in Coal Mining [J]. Journal of China University of Mining & Technology, 2004, 33(2):150-153.

[7] WANG Xuchun, HUANG Fuchang, ZHANG Huaixin, ZHANG Liangui. Discussion and improvement for A.H. Wilsons coal pillar design [J]. Journal of China Coal Society, 2002, 27(6):604-608.

[8] Xie Heping; Duan Fabing; Zhou Hongwei; Zhao Guoxu. Recent Developments of Theory And Analysis Methods of Strip Pillar Stability [J]. China Mining Magazine, 1998, 7(5):37-41.

[9] Hu Bingnan. Principles of strip mining Design in Coal Seams[J]. Coalmine Design, 2000, 4:3-6.