Research on Mining Technological Parameters of 7^# Thin Coal Seam in Liuquan Mine

Abstract:

Aimed at the specific geological conditions of 7# thin coal seam in Liuquan Mine, this paper used the methods of numerical calculation and theoretical analysis to determine the reasonable technological parameters of high-grade conventional mining face. The numerical simulation software of UDEC (Universal Distinct Element Code) was used to contrast and analyse the characteristics of surrounding rock stress distribution and overlying rock horizontal displacement under the condition of different length of coalface, then it was indicated that the surrounding rock deformation was less when length of coalface was 110 m which was advantageous for roof control; according to the conditions of roof and floor, the roof support strength was being calculated systematically to determine the row space of props being 700×1200 mm; the main equipments of coalface was assorted, and reasonable work manner in coalface and gob processing measure was put forward, which provided guidance for efficient mining in thin coal seam.

• Periodical: Advanced Materials Research (Volume 629)
• Pages: 937-942
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.629.937
• Online since: December 2012
• Authors: Dong Sheng Zhang, Xu Feng Wang, Yang Zhang, Jin Liang Wang
• Keywords: Length of Coalface, Mining Technology, Numerical Simulation, Roof Control, Thin Coal Seam

References

[1] LV YL. Developments of mechanized mining equipment for thin coal seam in domestic. Jiangxi Energy, 2008; 2: 7-9.

[2] WEN QH. The present situation and future development of thin coal seam mining. Coal Engineering, 2009; 3: 60-1.

[3] SHEN GH. Theory and Practice of Mine Special Mining. Beijing: China Coal Industry Publishing House, (1998).

[4] DU JP, MENG XR. Coal Ming Study. Xuzhou: China University of Mining and Technology Press, (2009).

[5] ZHU YC. Mining of Difficult to Mine and Complex Coal Seam. Beijing: The World Book Publishing House, (1998).

[6] DAI SC. High Yield and High Efficiency Synthesized Mechanical Mining Technology and Equipment. Beijing: China Coal Industry Publishing House, (1997).

[7] GAO J. A study on the law of mine pressure behaviors at a fully mechanized longwall coal face in a soft thin coal seam with soft roof and floor. China Coal, 2010; 4: 51-5.

DOI: 10.4028/www.scientific.net/amr.962-965.1123

[8] DUAN HM, HU XM, WU SZ. Optimized research on coal mining method of thin and medium steep inclined seam. Coal Science and Technology, 2008; 2: 16-8.