Research on Rapid Excavation Technology of Roadway in Coal Seam with the Risk of Coal and Gas Outburst

Abstract:

According to the questions of long eliminating coal and gas outburst period, large projects and slow driving came from the regional measurement of drilling hole ,the paper select 2371 (1) rail transport roadway as experiment for using along seam long drilling as a regional measurement to eliminate coal and gas outburst. Since the regional measurement of along seam long drilling had been carried out, the remaining gas content decreased more than 60％, max Smax was 5.4kg/m, max qmax was 2.01/min.Both Smax and qmax were not beyond the standard. Gas concentrations were not overrun. Gas emission decreased in the roadway afterward. The regional measurement eliminated the risk of coal and gas outburst in effect. Heading face promoted 423m forward safely. The max January footage could reach 120m.Achieve driving of heading face safely and fast.

• Periodical: Advanced Materials Research (Volumes 524-527)
• Pages: 325-329
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.524-527.325
• Online since: May 2012
• Authors: Shou Tao Hu, Bai Sheng Nie, Ming Ju Liu, Yan Wei Liu, Xiang Chun Li, Jian Hua Guo
• Keywords: Heading Face, Long Drilling along Seam, Pressure Relief and Permeability Enhancement

References

[1] Xueqiu He, Baisheng Nie, Wenxue Chen，et al., Research progress on electromagnetic radiation in gas-containing coal and rock fracture and its applications[A]. Beijing : The First International Symposium on Mine Safety Science and Engineering. 2011, Volum(A), 1311-1324.

DOI: 10.1016/j.ssci.2011.08.044

[2] Wang enyi. Study on the mechanism of coal and gas outbursts [J]. Journal of Jiaozuo Institute of Technology: Natural Science. 2004，23(6)：419-422

[3] Lin boquan, Zhang jianguo. Theory and technology of mine gas drainage[M]. Beijing: China University of Mining and Technology press, (1996)

[4] Huang huizhong. The application and effect investigation of drainage while driving of roadway in outburst coal seam[J]. Mining Safety & Environmental Protection, 2005，32(3):81-83

[5] Lin boquan, Zhou shining. The mechanism of Stress Relaxation Zone in coal roadway on coal and gas outburst[J]. Journal of Shanxi Mining Institute, 1993, 11(4):350-357

[6] Yu shanbing, Zheng zhemin, Tan mingqing. Damage of porous media containing pressurized gas by unloading and the maximum damage principle for critical outburst[J]. acta mechanica sinica. 1997，29(6):641-646

[7] Jiang chenglin. Shell instability mechanism and controlling techniques of coal and gas outburst[M]. Xuzhou: China University of Mining and Technology press, (1998)

[8] Xu tao, Tang chunan, Zhang yongan. Theoretical, Experimental and Numerical Studies on Deformation and Failure of Brittle Rock in Uniaxial Compression[J]. JOURNAL OF NORTHEASTERN UNIVERSITY, 2003, 24(1): 87-90