Application Research on Concrete Filled Steel Tube Supports Supporting Technology in Stress Concentration Roadway

Abstract:

Part of the east wing belt roadway in -450 level east, NO.1 mining area, Dashu village coal mine, Jizhong Energy Fengfeng Group was under the 172102 working face’s stop mining coal pillar. The phenomenon of the stress concentration was obvious, the pressure of the roadway was large and the surrounding rock damaged severely. Concrete filled steel tube supports were used in stress concentration region. The supports type was φ194×8mm, and distance between supports was 800mm. They were of rapid construction speed, better supporting effect. The numerical simulation results also showed that the concrete filled steel tube supports can reduce deformation of the roadway surrounding rock in stress concentration region effectively.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 773-778
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.773
• Online since: November 2012
• Authors: Guo Lei Liu*, Jun Wang, Hai Bin Wang, Xiao Sheng He, Xue Bin Li
• Keywords: Concrete Filled Steel Tube Supports, Roadway Surrounding Rock, Stress Concentration Region

References

[1] Caiping Lu, Linming Dou, Anye Cao, et al. Research on micro seismic activity rules in deep high-stress concentration district, Chinese Journal of Geotechnical Engineering[J], 2008(11): 2302-2308.(In Chinese)

[2] Caiping Lu, Haishun Liu, Biao Liu, et al. Practice of rock burst dynamic prevention in deep high stress concentration district, Journal of China coal society[J]. 2010(12): 1984-1989. (In Chinese)

[3] RunQiu Huang, YunSheng Wang, ShiTian Wang, et al. High geo-stress distribution and high geo-stress concentration area models for eastern margin of Qinghai-Tibet plateau [J]. Science China Technological Sciences, 2011: 154-166.

DOI: 10.1007/s11431-011-4652-1

[4] Zhangyun Cheng, Weide Wang. Application of U-steel Support to the area of workings repaired stress concentration[J]. Hydraulic Coal Mining and Pipeline Transportation, 2007(2): 33-34. (In Chinese)

[5] Si Wang, Dianlu Wang, Lei Shen, et al. Isolated island pillar stress area roadway in Dashucun mine optimization layout modification and support [J]. Journal of North China Institute of Science and Technology, 2011(4): 10-13. (In Chinese)

[6] Shaohuai Cai. Modern steel tube confined concrete structures (revised edition)[M]. Beijing: China Communications Press, 2007. (In Chinese)

[7] Linhai Han, Youfu Yang. Modern steel tube confined concrete structures and technology[M]. Beijing: China Architecture and Building Press, 2007. (In Chinese)

[8] Shantong Zhong. Steel tube confined concrete structures[M]. Beijing: Tsinghua University Press, 2004. (In Chinese)

[9] Yanfa Gao, Bo Wang. Jun Wang, et al. Test on structural property and application of concrete-filled steel tube support of deep mine and soft rock roadway[J]. Chinese Journal of Geotechnical Engineering, 2010 (1): 2604-2608. (In Chinese)

[10] Desheng Zang. Study on concrete- filled steel tube supports[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(3): 342-344. (In Chinese)